Indico 100l Service Manual - 740914 6m3j1l

I Canada Inc.

SERVICE AND INSTALLATION MANUAL

PRE-INSTALLATION

1¾

INSTALLATION

2¾

INTERFACING, PROGRAMMING, AND CALIBRATION

3¾

ACCEPTANCE TESTING

4¾

TROUBLESHOOTING

5¾

REGULAR MAINTENANCE

6¾

THEORY OF OPERATION

7¾

SPARES

8¾

SCHEMATICS

9¾

The original version of this manual (Jun 03,1999) has been drafted in the English language by: Communications & Power Industries communications & medical products division.

X-Ray Generator Service Manual

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Pre-installation

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CHAPTER 1 PRE-INSTALLATION CONTENTS:

Section 1.1.0 INTRODUCTION .......................................................................................................................................... 1-2 1.1.1 Generator Description ...............................................................................................................................1-2 1.1.2 Features .................................................................................................................................................... 1-2 1.1.3 Radiographic Performance........................................................................................................................ 1-2 1.1.4 Environmental Specifications .................................................................................................................... 1-3 1.1.5 Applicable Standards ................................................................................................................................ 1-3 1.1.6 Electromagnetic Compatibility (EMC) ....................................................................................................... 1-7 1.2.0 SAFETY ........................................................................................................................................................ 1-7 1.2.1 Safety and Warning Symbols .................................................................................................................... 1-7 1.2.2 Safety Notices and Warnings .................................................................................................................... 1-8 1.2.3 Safety Warning Labels .............................................................................................................................. 1-9 1.3.0 PREPARING FOR INSTALLATION............................................................................................................ 1-14 1.3.1 Generator Heat Output............................................................................................................................ 1-14 1.3.2 Generator Power Requirements ............................................................................................................. 1-14 1.3.3 Generator Ground Requirements............................................................................................................ 1-17 1.3.4 Locating and Mounting the Generator..................................................................................................... 1-17 1.3.5 Seismic Centers for the Generator.......................................................................................................... 1-20 1.3.6 Pre-Installation Checklist......................................................................................................................... 1-20 1.3.7 Tools and test Equipment Required........................................................................................................ 1-21 1.4.0 COMPATIBILITY LISTING.......................................................................................................................... 1-21 1.5.0 GENERATOR LAYOUT AND MAJOR COMPONENTS ............................................................................ 1-22 1.6.0 CUSTOMER ............................................................................................................................. 1-23


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INTRODUCTION This chapter summarizes the main features of the 30 kW, 37.5 kW, and 50 kW, 100 kHz X-ray generator (performance, regulatory and compatibility). Safety information is provided, along with environmental, room and installation requirements. This chapter concludes with a pre-installation checklist and a diagram showing the major component layout. The information in this chapter is provided in order for the installer to be able to plan the site layout prior to installation of the generator.

1.1.1

Generator Description Depending on model, the X-ray generator is intended for use in radiographic only stationary X-ray systems used for medical, chiropractic, or veterinary diagnostic purposes. The X-ray generator consists of a main power cabinet, and a control console. The main power cabinet contains the HT tank and control circuits, the filament drivers, the low speed starter, and interface connections to the room equipment. The control console allows the operator to select the technique factors, image receptors, etc., and to initiate an X-ray exposure. The console also contains the AEC interface connections.

1.1.2

Features The following are the main features of and the options available for the generator:

1.1.3

•

Integral low speed starter, compatible with X-ray tubes with type “R” stator.

•

24 VAC 150 watts power source for collimator lamp.

•

24 VDC 75 watts power source for system locks.

•

Optional AEC. Interfaces with 2 A.I.D. ion chambers.

Radiographic Performance kVp range: kVp steps: kVp accuracy: Ripple (kV): Risetime (10-90%): Time range: mAs range

mAs accuracy: mA range

Coefficient of linearity: Coefficient of reproducibility:

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40 to 150 kVp output capability (125 kVp maximum for some models). variable in 1 kVp steps. ± 5 %. 5 % p-p over the full operating range. <1.5 ms. 0.004 - 6 seconds. 1.0 to 420 mAs (large focus), 0.1 to 100 mAs (small focus) for 30 and 37.5 kW generators 1.0 to 600 mAs (large focus), 0.1 to 100 mAs (small focus) for 50 kW generators. ± (10 % + 0.2) mAs. 25 to 300 mA (30 kW generators), 25 to 375 mA (37.5 kW generators), 25 to 500 mA (50 kW generators). 0.05 (station to station) mAs. kV, mAs ≤ 0.04.

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Environmental Specifications OPERATING Ambient temperature range Relative humidity Atmospheric pressure range

10 to 40 °C (50 to 104 °F). 20 to 80%, non condensing. 500 to 1060 hPa (375 to 795 mm Hg).

TRANSPORT AND STORAGE Ambient temperature range Relative humidity Atmospheric pressure range

-25 to 70 °C (-13 to 158 °F). 5 to 95%, non condensing. 500 to 1060 hPa (375 to 795 mm Hg).

Applicable Standards This series of X-ray generators complies with some or all of the following regulatory and design standards as indicated in the table below. VZW2551 / 2552 SERIES 30 kW 37.5 kW

REGULATORY STANDARD 1) UL187. 2) FDA Center for Devices & Radiological Health (CDRH) - 21 CFR subchapter J (USA). 3) Radiation Emitting Devices Act - C34 (Canada).

30 kW

37.5 kW

50 kW

√

√

√

√

√

√

√

√ √

√

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4) Medical Devices Regulations (Canada).

√

√

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5) EC Directive 93/42/EEC concerning Medical Devices (European Community). 6) EN 60601-1/IEC 60601-1, EN 60601-2-7/IEC 60601-2-7, CSA 601.1, UL2601.1. 7) EN 60601-1-2:2001/IEC 60601-1-2:2001.

√

√

√

√

√

√

√

√

√

√

√

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8) EN 60601-1-4/IEC 60601-1-4, EN ISO 14971. A)

VZW2554 SERIES

√

√

SAFETY •

UL187.

•

FDA Center for Devices & Radiological Health (CDRH) - 21 CFR title 21 subchapter J (USA).

•

Radiation Emitting Devices Act - C34 (Canada).

•

Medical Device Regulations (Canada).

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EC Directive 93/42/EEC concerning Medical Devices (European Community).

•

EN 60601-1/IEC 60601-1, EN60601-2-7/IEC 60601-2-7, CSA 601.1, UL2601.1 -Type of protection against electric shock: Class I equipment. -Degree of protection against electric shock: Not classified. -Degree of protection against harmful ingress of water: Ordinary equipment. -Mode of operation: Continuous operation with intermittent loading (standby - exposure). -Equipment not suitable for use in presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide.

•

EN 60601-1-4/IEC 60601-1-4, EN ISO 14971.

NOTE: All referenced standards are considered to be at the latest revision.


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1.1.5

Applicable Standards (Cont)

B)

EMC (EN 60601-1-2:2001/IEC 60601-1-2:2001)

Guidance and manufacturer’s declaration – electromagnetic emissions The VZW2554 series of X-ray generators is intended for use in the electromagnetic environment specified below. The customer or the of the VZW2554 series should assure that it is used in such an environment.

Emissions test

Compliance

Electromagnetic environment - guidance

RF emissions CISPR 11

Group 1

RF emissions CISPR 11

Class A (The VZW2554 series of X-ray generators in combination with shielded location) Not Applicable

The VZW2554 series of X-ray generators use RF energy only for their internal functions. Therefore, the RF emissions are very low and are not likely to cause any interference in nearby electronic equipment. The VZW2554 series of X-ray generators must be used only in a shielded location with a minimum RF shielding effectiveness and, for each cable that exits the shielded location, a minimum RF filter attenuation of 40dB from 30 MHz to 230 MHz and 47dB from 230 MHz to 1 GHz. (The minimum at 30 MHz is 40dB and the minimum at 230 MHz is 47dB).

Harmonic The VZW2554 series is suitable for use in all establishments other emissions than domestic and those directly connected to the public lowIEC 61000-3-2 voltage power supply network that supplies buildings used for Voltage Not Applicable domestic purposes. fluctuations/ flicker emissions IEC 61000-3-3 NOTE It is essential that the actual shielding effectiveness and filter attenuation of the shielded location be verified to assure that they meet the minimum specifications.

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Guidance and manufacturer’s declaration – electromagnetic immunity The VZW2554 series of X-ray generators is intended for use in the electromagnetic environment specified below. The customer or the of the VZW2554 series should assure that it is used in such an environment.

Immunity test

IEC 60601 test level

Compliance level

Electromagnetic environment – guidance

Electrostatic discharge (ESD) IEC 61000-4-2 Electrical fast transient/burst IEC 61000-4-4

± 6 kV ± 8 kV air

± 6 kV ± 8 kV air

Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%.

± 2 kV for power supply lines ± 1 kV for input/output lines ± 1 kV differential mode ± 2 kV common mode < 5 % UT (> 95 % dip in UT) for 0.5 cycle

± 2 kV for power supply lines ± 1 kV for input/output lines ± 1 kV differential mode ± 2 kV common mode < 5 % UT (> 95 % dip in UT) for 0.5 cycle

Mains power quality should be that of a typical commercial or hospital environment.

40 % UT (60 % dip in UT) for 5 cycles

40 % UT (60 % dip in UT) for 5 cycles

70 % UT (30 % dip in UT)

70 % UT (30 % dip in UT)

< 5 % UT (> 95 % dip in UT) for 5 s 3 A/m

< 5 % UT (> 95 % dip in UT) for 5 s 3 A/m

Surge IEC 61000-4-5

Voltage dips, short interruption, and voltage variations on power supply input lines IEC 60601-4-11

Mains power quality should be that of a typical commercial or hospital environment.

Mains power quality should be that of a typical commercial or hospital environment. If the of the VZW2554 series X-ray generator requires continued operation during power mains interruptions, it is recommended that the X-ray generator be powered from an uninterruptible power supply or battery.

Power frequency Power frequency magnetic fields should be at (50/60 Hz) levels characteristic of a typical location in a typical commercial or hospital environment IEC 61000-4-8 NOTE: UT is the A.C. mains voltage prior to application of the test level.


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Guidance and manufacturer’s declaration – electromagnetic immunity The VZW2554 series of X-ray generators is intended for use in the electromagnetic environment specified below. The customer or the of the VZW2554 series should assure that it is used in such an environment.

Immunity test

IEC 60601 test level

Compliance level

Electromagnetic environment - guidance

Conducted RF IEC 61000-4-6

3 Vrms 150 kHz to 80MHz

3 Vrms 150 kHz to 80MHz

Radiated RF IEC 61000-4-3

3 V/m 80MHz to 2.5 GHz

3 V/m 80MHz to 2.5 GHz

The VZW2554 series of X-ray generators must be used only in a shielded location with a minimum RF shielding effectiveness and, for each cable that enters the shielded location, a minimum RF filter attenuation of 40dB from 30 MHz to 230 MHz and 47dB from 230 MHz to 1 GHz. (The minimum at 30 MHz is 40dB and the minimum at 230 MHz is 47dB.) Field strengths outside the shielded location from fixed RF transmitters, as determined by an electromagnetic site survey, should be less than 3 V/m.a Interference may occur in the vicinity of equipment marked with the following symbol:

NOTE 1 These guidelines may not apply all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people. NOTE 2 It is essential that the actual shielding effectiveness and filter attenuation of the shielded location be verified to assure that they meet the minimum specification. a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the VZW2554 series of X-ray generators is used exceeds the applicable RF compliance level above, the X-ray generator should be observed to normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the X-ray generator.

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Electromagnetic Compatibility (EMC) In accordance with the intended use, some models of this series of X-ray generators comply with the European Council Directive concerning Medical Devices as per the table in this section. The CE marking affixed to this product signifies this. One of the harmonized standards of this Directive defines the permitted levels of electromagnetic emission from this equipment and its required immunity from the electromagnetic emissions of other devices. It is not possible, however, to exclude with absolute certainty the possibility that other high frequency electronic equipment, which is fully compliant to the EMC regulations, will not adversely affect the operation of this generator. If the other equipment has a comparatively high level of transmission power and is in close proximity to the generator, these EMC concerns (the risk of interference) may be more pronounced. It is therefore recommended that the operation of equipment of this type such as mobile telephones, cordless microphones and other similar mobile radio equipment be restricted from the vicinity of this X-ray generator.

1.2.0

SAFETY

1.2.1

Safety and Warning Symbols The following advisory symbols are used on the safety warning labels, and/or on circuit boards, and/or on the operator console. High voltage symbol used to indicate the presence of high voltage.

Warning symbol used to indicate a potential hazard to operators, service personnel or to the equipment. It indicates a requirement to refer to the accompanying documentation for details. Radiation exposure symbol used on operator console. Lights to indicate that an exposure is in progress. This is accompanied by an audible tone from the console. WARNING

THIS X-RAY UNIT MAY BE DANGEROUS TO PATIENT AND OPERATOR UNLESS SAFE EXPOSURE FACTORS AND OPERATING INSTRUCTIONS ARE OBSERVED.


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Radiation warning label on operator console. Never allow unqualified personnel to operate the Xray generator.

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Safety Notices and Warnings WARNING:

THIS X-RAY UNIT MAY BE DANGEROUS TO PATIENT AND OPERATOR UNLESS SAFE EXPOSURE FACTORS AND OPERATING INSTRUCTIONS ARE OBSERVED.

WARNING:

PROPER USE AND SAFE OPERATING PRACTICES WITH RESPECT TO X-RAY GENERATORS ARE THE RESPONSIBILITY OF S OF SUCH GENERATORS. I CANADA INC. PROVIDES INFORMATION ON ITS PRODUCTS AND ASSOCIATED HAZARDS, BUT ASSUMES NO RESPONSIBILITIES FOR AFTERSALE OPERATING AND SAFETY PRACTICES. THE MANUFACTURER ACCEPTS NO RESPONSIBILITY FOR ANY GENERATOR NOT MAINTAINED OR SERVICED ACCORDING TO THIS SERVICE AND INSTALLATION MANUAL, OR FOR ANY GENERATOR THAT HAS BEEN MODIFIED IN ANY WAY. THE MANUFACTURER ALSO ASSUMES NO RESPONSIBILITY FOR X-RAY RADIATION OVEREXPOSURE OF PATIENTS OR PERSONNEL RESULTING FROM POOR OPERATING TECHNIQUES OR PROCEDURES.

X-ray radiation exposure may be damaging to health, with some effects being cumulative and extending over periods of many months or even years. Operators and service personnel should avoid any exposure to the primary beam and take protective measures to safeguard against scatter radiation. Scatter radiation is caused by any object in the path of the primary beam and may be of equal or less intensity than the primary beam that exposes the film. No practical design can incorporate complete protection for operators or service personnel who do not take adequate safety precautions. Only authorized and properly trained service and operating personnel should be allowed to work with this X-ray generator equipment. The appropriate personnel must be made aware of the inherent dangers associated with the servicing of high voltage equipment and the danger of excessive exposure to X-ray radiation during system operation.

Do not connect unapproved equipment to the rear of the console. J1 and J12 on the U board are used for interconnect cables to the generator main cabinet. J1 and J2 on the optional AEC board are the AEC inputs from the AEC chamber(s). J5 and J6 are CAEC inputs ONLY. INCORRECT CONNECTIONS OR USE OF UNAPPROVED EQUIPMENT MAY RESULT IN INJURY OR EQUIPMENT DAMAGE.

CAUTION:

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DO NOT EXCEED THE TUBE MAXIMUM OPERATING LIMITS. INTENDED LIFE AND RELIABILITY WILL NOT BE OBTAINED UNLESS GENERATORS ARE OPERATED WITHIN PUBLISHED SPECIFICATIONS.

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Safety Notices and Warnings (Cont) WARNING:

HAZARDOUS VOLTAGES EXIST INSIDE THE GENERATOR `WHENEVER THE MAIN POWER DISCONNECT IS SWITCHED ON. THESE AREAS INCLUDE THE MAIN FUSEHOLDER AND ASSOCIATED CIRCUITS ON THE POWER INPUT BOARD. THE CONSOLE ON/OFF SWITCH DOES NOT DISCONNECT THE MAIN POWER FROM THE ABOVE AREAS INSIDE THE GENERATOR. THE DC BUSS CAPACITORS, LOCATED IN THE MAIN CABINET PRESENT A SAFETY HAZARD FOR AT LEAST 5 MINUTES AFTER THE POWER HAS BEEN REMOVED FROM THE UNIT. CHECK THAT THESE CAPACITORS ARE DISCHARGED BEFORE SERVICING THE GENERATOR.

1.2.3

Safety Warning Labels This subsection defines the safety labels used inside and outside the generator cabinet. NOTE:

THESE LABELS AND WARNINGS ARE PROVIDED TO ALERT SERVICE PERSONNEL THAT SERIOUS INJURY WILL RESULT IF THE HAZARD IDENTIFIED IS IGNORED.

WARNING:

SWITCH OFF THE MAIN POWER DISCONNECT AND ALLOW SUFFICIENT TIME FOR ALL CAPACITORS TO DISCHARGE BEFORE REMOVING ANY COVERS.

WARNING:

IF ANY BARRIERS OR COVERS MUST BE REMOVED FOR SERVICE, TAKE ALL REQUIRED PRECAUTIONS WITH RESPECT TO THE HAZARD(S) AND IMMEDIATELY REPLACE THE BARRIERS / COVERS WHEN THE NEED FOR REMOVAL IS COMPLETED.

This information is provided to help you establish safe operating conditions for both you and your X-ray generator. Do not operate this X-ray generator except in accordance with these instructions, and any additional information provided by the X-ray generator manufacturer and / or competent safety authorities.

WHEN CONNECTING ADDITIONAL EQUIPMENT TO THE GENERATOR, IT IS THE RESPONSIBILITY OF THE INSTALLER TO COMPLIANCE TO ALL LOCAL REGULATORY STANDARDS FOR SAFETY, EMC, AND HAZARD ANALYSIS / RISK ASSESSMENT OF THE FINAL SYSTEM CONFIGURATION.


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Safety Warning Labels (Cont) Caution HV Behind Cover Label

This label is attached to a cover over the inverter board(s). The inverter assembly is connected to the main DC bus and will have high voltage applied at all times that the generator is switched on. This assembly will remain energized for 5 minutes after either the generator is switched off via the console, or the main disconnect is switched off. This label is also attached to a cover over the main input fuses on the power input board. This area will have mains voltage applied as long as the main disconnect is switched on.

Weight Label

This label is attached to the main cabinet and to the HT oil tank, and states the approximate weight of the main cabinet and the HT oil tank. This label cautions against attempting to lift those assemblies without proper assistance.

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Safety Warning Labels (Cont) DC Buss Label

This label is attached to the main access on the generator cabinet. The internal capacitors may hold a lethal charge for up to 5 minutes after the console or the main power disconnect is switched off. Do not remove the cover for a minimum of 5 minutes after the power has been switched off. WARNING:

WAIT A MINIMUM OF 5 MINUTES AFTER THE INPUT MAINS POWER HAS BEEN REMOVED BEFORE REMOVING ANY COVERS OR ACCESS S. ONCE THE COVER(S) / (S) ARE REMOVED CHECK THAT THE VOLTAGE ACROSS THE DC BUS CAPACITORS IS LESS THAN 48 VDC BEFORE SERVICING.

Caution HV Exposed Label

This label is attached to the main access on the generator cabinet. High voltage is present within this cabinet at all times that the mains power is switched on.


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Safety Warning Labels (Cont) Caution HV Label

This label is attached to the resonant assembly. The resonant board will have exposed high voltage at all times that the DC bus is charged.

Danger HV Label

This label is attached to the primary terminals on the HT oil tank. These terminals may be energized at all times that the generator is switched on, and for 5 minutes after the console or the main disconnect is switched off.

Customer Interface Board 110 VAC is present on this board at all times that the generator is switched ON.

AEC Board Some versions of AEC board will have high voltage present. This only applies to AEC boards fitted with a high voltage supply for ion chambers, and can be recognized by the presence of the high voltage supply components within the dashed outline on the right side of the board. No high voltage hazard exists on this board if these components are not fitted.

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Safety Warning Labels (Cont) Power Input Board HIGH VOLTAGE HAZARD: High voltage is present on this board whenever the generator is connected to live AC mains. The DC bus capacitors will remain charged for up to 5 minutes after the generator has been switched off. BURN HAZARD: Power input boards for single phase generators are fitted with several high power resistors that operate at temperatures sufficient to cause skin burn. Ensure that these resistors have cooled sufficiently after the power has been switched off before servicing.

Primary of Power Supply Auxiliary Transformer FUSE RATING: Fuse F1 is located on the generator chassis, to the left of the main input fuses on the power input board. Single phase generators: FNM-3 (3A 250V). Three phase generators: FNQ-2 (2A 500V).

Primary of 24 V Interface / Console Transformer FUSE RATING (three phase generators): On three phase generators, F2 is located on the generator chassis, to the left of the main input fuses on the power input board. (For singlephase generators, the fuse for the primary of this transformer is on the power input board). Fuse type and rating (three phase generators): FNQ-1 (1A 500V).

Low Speed Starter Board HIGH VOLTAGE HAZARD: High voltage is present on this board whenever the generator is switched on. BURN HAZARD: This board is fitted with high power resistors that operate at temperatures sufficient to cause skin burn. Ensure that these resistors have cooled sufficiently after the power has been switched off before servicing.

Inverter Board HIGH VOLTAGE HAZARD: The inverter board(s) are connected to the main DC bus and will have high voltage applied at all times that the generator is switched on. This assembly will remain energized for up to 5 minutes after the generator is switched off, or the main disconnect is switched off.


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Safety Warning Labels (Cont) HT Tank HIGH VOLTAGE HAZARD: High voltage may be present at the primary terminals on the tank lid board, at the output high voltage connectors, and at the mA/mAs measuring jacks if the shorting link is opened for mA/mAs measurements. The generator must not be energized if the leads that attach to the primary of the high voltage transformer are disconnected. TORQUE NOTICE: Do not over-tighten the nuts on the feed through terminals for the primary of the HT transformers. Over tightening may damage the HT tank.

1.3.0

PREPARING FOR INSTALLATION

1.3.1

Generator Heat Output The maximum heat output of the main cabinet is 500 watts, with 20 watts maximum heat output for the console. Both the main cabinet and the console are convection cooled. Cooling slots underneath and on the sides of the main cabinet must not be obstructed, and sufficient clearance must be provided to allow adequate air flow for proper cooling. The console should never be covered while it is switched on.

1.3.2

Generator Power Requirements 30 kW Single Phase Line Voltage

230 VAC ± 10%, 1 phase.

Line Frequency

50/60 Hz.

Momentary Current

185 Amps.

Standby Current

5 Amps.

37.5 kW Single Phase Line Voltage

230 VAC +10% -0%, 1 phase.

Line Frequency

50/60 Hz.

Momentary Current

235 Amps.

Standby Current

5 Amps.

30 kW Three Phase Line Voltage

400 VAC ± 10%, 3 phase.

Line Frequency

50/60 Hz.

Momentary Current

60 Amps.

Standby Current

5 Amps.

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Generator Power Requirements (Cont) 37.5 kW Three Phase Line Voltage

400 VAC ± 10%, 3 phase.

Line Frequency

50/60 Hz.

Momentary Current

75 Amps.

Standby Current

5 Amps.

50 kW Three Phase Line Voltage

400 VAC ± 10%, 3 phase.

Line Frequency

50/60 Hz.

Momentary Current

100 Amps.

Standby Current

5 Amps.

The following table defines the power line requirements for the generators. NOTE: THE FOLLOWING TABLE CONTAINS RECOMMENDED VALUES FOR THE WIRE SIZES BETWEEN THE MAINS DISCONNECT AND THE GENERATOR. THE ACTUAL VALUES USED AT AN INSTALLATION ARE DEPENDENT ON THE QUALITY OF THE INPUT LINE (VOLTAGE LEVEL) THE CURRENT REQUIREMENTS AND THE LENGTH OF THE CABLE RUN AND MUST BE CONFIRMED BY THE INSTALLER.

FINAL SELECTION OF GENERATOR INPUT WIRE AND DISCONNECTS AS WELL AS THE CABLING FROM THE DISTRIBUTION TRANSFORMER TO THE MAINS DISCONNECT, MUST MEET THE REQUIREMENTS OF THE LOCAL ELECTRICAL CODES AND IS USUALLY DETERMINED BY HOSPITAL/CONTRACTOR ENGINEERING. ALL THE RATINGS LISTED CONSIDER THE GENERATOR REQUIREMENTS ONLY. THE INSTALLER MUST MAKE THE NECESSARY COMPENSATION FOR ADDITIONAL LOAD REQUIREMENTS

A POOR QUALITY INPUT LINE MAY RESULT IN THE INSTALLER HAVING TO DERATE THE GENERATOR'S MAXIMUM POWER


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Generator Power Requirements (Cont)

Mains Voltage

Minimum Recommended Mains Disconnect to Generator 15 ft/5 m max)

Generator Momentary Line Current

Minimum Recommended Generator Service Rating

Minimum Recommended Distribution Transformer Rating

Minimum Recommended Ground Wire Size

Apparent Mains Resistance

185 A

120 A

45 kVA

#4

0.06 Ω

30 kW 1∅ Generator 230 VAC

#4 2

2

(21 mm )

(21 mm )

37.5 kW 1∅ Generator 230 VAC

#2

235 A

120 A

60 kVA

2

0.048 Ω

#2 2

(33 mm )

(33 mm )


#6

60 A

100 A

40 kVA

2

0.30 Ω

#6 2

(13.3 mm )

(13.3 mm )

37.5 kW 3∅ Generator 400 VAC

#6

75 A

100 A

50 kVA

2

0.24 Ω

#6 2

(13.3 mm )

(13.3 mm )


#6

100 A

100 A

65 kVA

2

2

(13.3 mm )

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0.17 Ω

#6 (13.3 mm )

Recommended Service Disconnect: Refer to the preceding table. All wiring and grounding must comply with local electrical codes. All wiring must be copper. The disconnect switch shall be located within reach of the operator.

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Generator Ground Requirements POWER LINE: • A suitable ground must be connected from the disconnect switch to the main generator ground, located to the left of the main fuse block on the power input board. The ground wire is typically part of the line cord, and the current capacity of the ground conductor must normally be equal to or greater than that of the line conductors. • If a neutral line is provided with the system, under no circumstances is it to be used for ground purposes. The ground conductor must carry fault currents only. X-RAY TUBE HOUSING: • A copper ground cable, #10 AWG (6 mm2) or greater, is to be connected from the X-ray tube’s housing to the H.T. tank ground stud (located at the top of the H.T. tank). STATOR CABLE: • Use of a shielded stator cable is recommended. The shield for the stator cable must be properly grounded at the chassis ground studs as per chapter 2.

1.3.4

Locating and Mounting the Generator The main generator cabinet is self standing and does not need to be ed. However, the installation should meet the following requirements: •

The floor must be flat and level.

•

The generator installation area must be clean and free of dirt or debris.

•

If required, the generator may be anchored to the floor via the hold-down brackets (figure 1-1) or via the holes located in the base of the cabinet (figure 1-2).

•

Sufficient room must be provided to allow access to the rear and side s for installation and service. See figure 1-3 for recommended clearances.

•

A cable conduit should be provided from the control console to the main cabinet to allow routing of the control cable if required. Allow for a 2 inch conduit.

•

The control console is normally freestanding on a desk or shelf. It may be anchored if necessary.


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Locating and Mounting the Generator (Cont) 0.39 (10 mm ) DIA

13.9 (353)

16.1 (409)

3.3 (85)

TOP VIEW FRONT

LEVELLING FEET (4 PLACES)

20.1 (511) DIMENSIONS ARE IN INCHES (MM)

SPACERS SUPPLIED BY CUSTOMER (4 PLACES)

FILE: IN_MTG.CDR

Figure 1-1: Anchoring plates for securing the generator

16.1 (409)

12.3 (312)

0.63 (16 mm ) DIA

TOP VIEW FRONT

1.5 (38)

15.0 (380) DIMENSIONS ARE IN INCHES (MM) FILE: IN_MTG2.CDR

Figure 1-2: Holes in base of cabinet for securing the generator

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Locating and Mounting the Generator (Cont) Figure 1-3 shows recommended clearances around the generator.

Figure 1-3: Generator clearances


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Seismic Centers for the Generator Figure 1-4 shows the seismic center location for the generator main cabinet.

7 (178)

13.7 (348)

6 (152)

FRONT

LEFT SIDE

DIMENSIONS ARE IN

INCHES (MM) INDICO L SEISMIC.CDR

Figure 1-4: Generator seismic centers

1.3.6

Pre-Installation Checklist Before starting the generator installation, review the following checklist. CHECK √

Page 1-20

DESCRIPTION Is there an unloading area to transport the generator from the delivery truck to the inside of the building? If the installation is not on the same floor as the delivery entrance, is there an elevator available? Is there a transport dolly or similar device to move the generator? Do any regulatory bodies need to be notified prior to installation? If movers are required, have arrangements for time and equipment been completed? Are lifting straps or some other suitable device available to lift the generator off the shipping pallet?

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1

Tools and test Equipment Required The following is a checklist of recommended tools and test equipment for installation and calibration of the generator. CHECK √

1.4.0

DESCRIPTION General handtools for installation: Wrenches, nut drivers, assortment of screwdrivers, pliers, etc. If the generator is to be anchored to the floor, suitable hardware and drills, drill bits etc must be available. A supply of connectors for wiring: terminal lugs, caps, splices etc. A calibrated DVM which indicates true RMS voltages. Dual trace memory oscilloscope with a minimum 20 MHz bandwidth; appropriate leads, probes, etc. Device for measuring true kVp. This may be a Dynalyzer equivalent or a noninvasive meter such as the Keithley TRIAD system. A calibrated radiation meter with detectors that will allow for R/min and uR type measurements (or uGy and Gy/min). A suitable mA / mAs meter. A strobe or reed type tachometer to that the anode is rotating up to speed. A sufficient selection of patient absorbers to allow AEC calibration if this option is fitted. A suggested selection is 3/4 inch Al (quantity 2); 1 mm of Cu (quantity 8), Water in containers of 5.0. 10.0, 15.0 cm thickness. Vapor proof compound for the HT terminations.

COMPATIBILITY LISTING This X-ray generator is compatible with the following equipment:

X-RAY TUBES: Refer to the compatibility statement/product description at the end of this chapter, for compatibility. NOTE THE STATOR WARNING BELOW. NOTE: THE LOW SPEED STARTER IS COMPATIBLE WITH “R” TYPE STATORS ONLY.

AEC DEVICES: An AEC option is available to allow interfacing with A.I.D. and Comet ion chambers. Refer to compatibility statement/product description at the end of this chapter, for compatibility.

BUCKY: Liebel-Flarsheim 110V Bucky or equivalent, Summit J500 Bucky or equivalent.


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GENERATOR LAYOUT AND MAJOR COMPONENTS The dimensions and weight of the generator are shown in the table below. ITEM Main cabinet in shipping pack Main cabinet unpacked Control console

LENGTH 32 (815) 18.1 (459) 17 (432)

WIDTH 31 (787) 16.1 (408) 8.75 (225)

HEIGHT 51 (1295) 41 (1041) 3 (77)

WEIGHT 210 (95) 200 (90) 5 (2.25)

The above dimensions are inches (mm), weights are in pounds (Kg).

Figures 1-4 and 1-5 show the major components located inside the main cabinet. REAR

LEFT SIDE

TOP VIEW OF GENERATOR CABINET

RIGHT SIDE

FRONT NOTE: FIGURES 1-5 AND 1-6 SHOW THE VIEWS REFERENCED IN THE FIGURE ABOVE

POWER SUPPLY CONTROL BOARD

INVERTER BOARD (DEPENDING ON MODEL, MAY USE ONE OR TWO INVERTER BOARDS)

CUSTOMER INTERFACE BOARD

DC BUS ASSEMBLY

FILAMENT BOARD

(1 PHASE UNITS ONLY)

AUXILIARY BOARD

HT OIL TANK FILE: SM_SUBID.CDR

Figure 1-5: Major generator subassemblies view 1

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GENERATOR LAYOUT AND MAJOR COMPONENTS (Cont)

RESONANT BOARD POWER INPUT BOARD MAIN INPUT FUSES LOW SPEED STARTER BOARD AUXILIARY POWER FUSE POWER SUPPLY AUXILIARY TRANSFORMER 24V INTERFACE/ CONSOLE POWER TRANSFORMER

ACCESS COVER SHOWN REMOVED

SM_SUB1.CDR

Figure 1-6: Major generator subassemblies view 2

1.6.0

CUSTOMER

Any questions regarding X-ray generator operation should be directed to the Customer Department as shown on the inside cover page of this manual.


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CHAPTER 2 INSTALLATION CONTENTS: 2.1.0 INTRODUCTION ........................................................................................................................................... 2-2 2.2.0 UNPACKING.................................................................................................................................................. 2-2 2.3.0 LIFTING THE GENERATOR ......................................................................................................................... 2-3 2.4.0 EQUIPMENT PLACEMENT........................................................................................................................... 2-4 2.4.1 Main Cabinet .............................................................................................................................................. 2-4 2.4.2 Control Console.......................................................................................................................................... 2-4 2.5.0 WIRING TO THE GENERATOR.................................................................................................................... 2-5 2.5.1 Control Console.......................................................................................................................................... 2-5 2.5.2 Hand Switch (Optional) .............................................................................................................................. 2-6 2.5.3 Stator Connections..................................................................................................................................... 2-7 2.5.4 Thermal Switch........................................................................................................................................... 2-8 2.5.5 Power Line Mains....................................................................................................................................... 2-8 2.5.6 High Tension Cables .................................................................................................................................. 2-9 2.5.7 X-Ray Tube Housing Ground..................................................................................................................... 2-9 2.5.8 Room Equipment...................................................................................................................................... 2-10 2.5.9 Safety Interlocks ....................................................................................................................................... 2-10 2.6.0 PROGRAMMING THE LOW SPEED STARTER ........................................................................................2-10 2.6.1 Low Speed Starter Tube Select Table ..................................................................................................... 2-10 2.6.2 Low Speed Starter Boost Voltage Selection ............................................................................................ 2-11 2.6.3 Low Speed Starter Run Voltage Selection............................................................................................... 2-12 2.6.4 Low Speed Starter Boost Time Selection ................................................................................................ 2-13 2.7.0 INITIAL RUN-UP .......................................................................................................................................... 2-13 2.7.1 Initial Voltage Measurements ................................................................................................................... 2-13 2.7.2 Single Phase Primary Tap Selection........................................................................................................ 2-15 2.7.3 Three Phase Primary Tap Selection ........................................................................................................ 2-16 2.8.0 TUBE MA AUTO CALIBRATION ................................................................................................................. 2-17 2.9.0 FINAL CHECKS ........................................................................................................................................... 2-17 2.10.0 UTILITY SOFTWARE ................................................................................................................................ 2-17


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INTRODUCTION This Chapter contains instructions for unpacking, positioning, and cabling the X-ray generator, allowing for initial power-up and tube auto calibration.

2.2.0

UNPACKING WARNING:

THE GENERATOR MAIN CABINET WEIGHS APPROXIMATELY 210 POUNDS (95 KG) IN ITS SHIPPING CONTAINER. THE HT OIL TANK IS LOCATED IN THE MAIN CABINET. ONE PERSON SHOULD NOT ATTEMPT TO LIFT OR MOVE THIS ASSEMBLY WITHOUT PROPER EQUIPMENT OR ASSISTANCE.

1.

Inspect the pack for evidence of shipping damage. If there is evidence of shipping damage, note this in the event that a damage claim is justified.

2.

Remove the cardboard outer pack. See the cautionary note below before removing the pack.

CAUTION:

OPEN THE CARDBOARD PACK CAREFULLY. SHARP TOOLS MAY DAMAGE THE CONTENTS.

3.

Set aside the cardboard pack(s).

4.

Unscrew the bolts that secure the generator to the shipping pallet. Carefully lift the generator from the pallet. Refer to 2.3.0 for the procedure for lifting the generator.

5.

Inspect for internal and external shipping damage.

6.

Unscrew the leveling feet at the bottom of the generator by a minimum of 1 ½ in. (35 mm). This will provide the required airflow underneath the generator cabinet and allow room to make leveling adjustments when the generator is placed in its final location.

7.

Unpack the control console.

8.

Unpack the manuals and any other paperwork that may be packed with the generator.

9.

Keep the shipping containers. In case of shipping damage, place the unit(s) back in its shipping pack and notify the carrier and the Customer Department as shown on the inside cover page of this manual.

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LIFTING THE GENERATOR One of the following methods is recommended for lifting or moving the generator. Proper equipment or sufficient help is necessary to lift the unit. Refer to figure 2-1 for identification of the s referenced below. •

Lifting straps may be used with a hoist to raise the generator. The straps should be placed under the generator cabinet and along the four sides to properly the cabinet.

•

Remove the main access and the rear wiring access from the generator cabinet Temporarily disconnect the ground wire(s) from the cover(s). The metal cross brace found at the front of the cabinet (below the circuit board mounting ) may be used, in conjunction with the lip at the upper edge of the opening for the rear wiring access , as lifting points. Two people (one on each side) will be required to lift the generator cabinet. Be sure to properly reconnect the ground leads when the covers are reinstalled.

Figure 2-1: Generator lifting points


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2.4.0

EQUIPMENT PLACEMENT

2.4.1

Main Cabinet Place the generator cabinet in a location that will allow the following: • • • •

Easy front and side access for service and sufficient clearance at the rear for room interface cables. Refer to Chapter 1. Air circulation - a minimum height of 1 ½ in. (35 mm) is recommended to allow airflow underneath the generator. Stable footing - the leveling feet at the bottom of the cabinet will be used to prevent movement during normal operation. Close proximity to service disconnect boxes - cables should not be on the floor where they could be stepped on.

After the generator has been placed in it’s final location, adjust the leveling feet such that the generator is level and stable. As noted previously, the leveling feet must be unscrewed by a minimum of 1 ½ in. (35 mm) to allow for proper airflow underneath the generator.

2.4.2

Control Console Position the control console in its intended location and ensure that it is stable. Refer to Chapter 1. •

If the console is located on a shelf, supply index pins or equivalent hardware to the base of the console to prevent slipping.

•

Ensure that the console is mounted at a height and angle to allow easy viewing of the displays.

•

Leave sufficient slack in the cabling to the console to allow for future service and maintenance.

NOTE:

DO NOT LOCATE THE CONTROL CONSOLE WHERE X-RADIATION MAY BE PRESENT DURING INSTALLATION OR OPERATION.

NOTE:

IT IS RECOMMENDED THAT THE CONSOLE CABLES NOT BE DISASSEMBLED FOR SYSTEM INSTALLATION. HOWEVER, IF THIS IS ABSOLUTELY NECESSARY TO ROUTE THE CABLES, PLEASE ENSURE CAREFUL AND CORRECT REASSEMBLY OF THE CONNECTOR SHELL TO AVOID ANY POSSIBILITY OF PINCHING OF THE INTERNAL WIRES BY THE SHELL.

YOU MAY CHOOSE TO TEMPORARILY LOCATE THE CONSOLE NEAR THE GENERATOR FOR INITIAL PROGRAMMING AND CALIBRATION. IF THIS IS SO, PLEASE COMPLETE THE FINAL CONSOLE INSTALLATION PER THIS SECTION WHEN THE GENERATOR INSTALLATION IS COMPLETED.

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WIRING TO THE GENERATOR Unless specified otherwise, it is suggested that all cables be routed into the generator main cabinet through the wiring access on the rear of the cabinet. The cables should be secured to the lip on the access using tie wraps or equivalent fasteners. All cables should be routed away from high voltage areas in the main cabinet, and dressed and secured neatly in place. Cables should be cut to the correct length if possible as excess cabling may contribute to EMI/RFI problems. For those cables that cannot be cut to the correct length (HT cables and console cables for example), try to minimize the area inside any loops of excess cable, as these loops are in effect an antenna. EXCESS LENGTHS OF CABLING MUST NEVER BE BUNDLED UP AND STORED INSIDE THE GENERATOR.

2.5.1

Control Console 1.

Locate and unbundle the 37 conductor console cable. The free end of this cable is routed out of the generator main cabinet through the access on the rear of the cabinet. Connect the free end of this cable to J1 on the rear of the console. Ensure that the screw locks are fully tightened to secure the connector to the console. For reference, the other end of this cable is connected to J1 on the power supply control board.

2.

Locate and unbundle the 25 conductor console cable. The free end of this cable is routed out of the generator main cabinet through the access on the rear of the cabinet. Connect the free end of this cable to J12 on the rear of the console. Ensure that the screw locks are fully tightened to secure the connector to the console. For reference, the other end of this cable is connected to J6 on the customer interface board.

3.

Figure 2-2 shows the designations of the connectors on the rear of the control console. Do not connect unapproved equipment to the rear of the console. J1 and J12 on the U board are used for the interconnect cables to the generator main cabinet. J1 and J2 on the AEC board are for conventional ion chamber AEC inputs, J5 and J6 are CAEC inputs used for special applications only. J1, J2, J5, and J6 are only available if the optional AEC board is fitted. AEC chamber compatibility must be confirmed per chapter 3. INCORRECT CONNECTIONS OR USE OF UNAPPROVED EQUIPMENT MAY RESULT IN INJURY OR EQUIPMENT DAMAGE.

Figure 2-2: Rear of control console


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Hand Switch (Optional) Route the hand switch cable into the console via the cutout at the rear of the console. If using a I supplied hand switch assembly, plug the 3-pin connector on the end of the hand switch cable into J9 on the U board (observe orientation). If using a hand switch assembly without a mating connector for J9, the hand switch connections may be made to the J9 solder pads on the U board in the console. Pin assignments are as follows: U BOARD J9-1 J9-2 J9-3

DEFINITION X-ray Prep Common

The hand switch cable should be dressed and secured as required to prevent strain on the terminations during normal use of the generator.

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2

Stator Connections Refer to figure 2-3 for the X-ray tube stator and thermal switch connections. 1.

Route the X-ray tube stator cable to the stator terminal block. This is shown in figure 2-3. USE OF A SHIELDED STATOR CABLE IS RECOMMENDED. THE SHIELD FOR THE STATOR CABLE MUST BE PROPERLY GROUNDED AT THE CHASSIS GROUND STUD SHOWN IN FIGURE 2-3.

2.

Connect the wires to the stator terminal block as shown. The tube thermal switch will normally be connected to the THERMAL SWITCH connections on the stator terminal block, but may optionally be connected to the room interface board (refer to INPUTS in Chapter 3).

Figure 2-3: Stator connections to generator

STATOR LABEL DESIGNATIONS COMMON MAIN SHIFT THERMAL SWITCH (Term 1) THERMAL SWITCH (Term 2)


TERMINAL DESIGNATIONS FOR SUMMIT TUBES ONLY 09 07 08 T5 T6

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Thermal Switch Refer to 2.5.3 for the X-ray tube thermal switch connections.

2.5.5

Power Line Mains WARNING:

TO AVOID ELECTRICAL SHOCK, ENSURE THAT THE AC MAINS DISCONNECT IS LOCKED IN THE OFF POSITION, AND THAT ALL MAINS CABLES ARE DEENERGIZED BEFORE CONNECTING TO THE GENERATOR.

Refer to Chapter 1 for generator power and generator power line requirements. 1.

the AC mains cable through the access hole located at the lower rear of the main cabinet.

2.

Use an appropriate cable clamp to secure the mains cable at the cabinet entrance.

3.

Temporarily remove the safety cover from the main fuses. Strip sufficient cable jacket to allow the ground wire to reach the main ground connector located at the left side of the main fuse block. Refer to figure 2-4.

4.

Connect the ground wire to the chassis ground connector, and connect the mains power wires to the terminals on the bottom of the main fuse holder (3 wires for 3 phase systems, 2 wires for single phase systems as shown). Be sure to replace the main fuse safety cover after all connections are made and properly tightened.

5.

DO NOT SWITCH ON MAINS POWER AT THIS TIME.

Figure 2-4: Generator mains connection

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2

High Tension Cables The X-ray tube should be mounted in its normal fixture i.e. tube stand or other device. 1

that the HT cable terminations are clean, in good condition, and coated with vapor proof compound.

2.

Remove the dust caps which cover the high voltage terminals on the HT oil tank.

3.

Connect the anode and cathode cables to the HT tank. Use the right angle connectors for the HT transformer end. Ensure that the cables are plugged into the proper connectors on the HT tank. Refer to figure 2-5.

4.

Be sure that the HT cable connectors are tight and there is no play between the connector insulator and the screw down ring.

Figure 2-5: HV connector identification

2.5.7

X-Ray Tube Housing Ground A separate ground wire (10 AWG, 6mm2) must be connected from the X-ray tube housing to one of the ground studs on the HT tank. Refer to figure 2-5 for the location of these ground studs. These ground locations may have other ground wires already connected, ensure that these existing ground wires are not disconnected when making the X-ray tube ground connection. Failure to make this ground connection may result in intermittent operation and/or exposure errors.


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Room Equipment Refer to Chapter 3 for connection of the Buckys, interlocks, collimator lamp and system locks power, and optional AEC chambers. It is suggested that these items not be connected until after the initial run-up of the generator is complete, and the tube auto calibration routine has been performed as described near the end of this Chapter.

2.5.9

Safety Interlocks The room door interlock switch must be wired to the generator as described in INPUTS in Chapter 3 prior to power up. This switch will provide a closed when the door is closed.

2.6.0

PROGRAMMING THE LOW SPEED STARTER PLEASE BE SURE TO READ AND UNDERSTAND THIS SECTION FULLY BEFORE PROCEEDING. Before continuing, note the part number of the low speed starter in the generator. Part number 732752-00 has a 33 µF phase-shift capacitor; part number 732752-01 has a 12.5 µF capacitor, and part number 732752-02 has a 45 µF capacitor. Confirm that the phase shift capacitor is compatible with the desired tube(s), as listed in table 1 in Supplement 746026 which follows chapter 2. The starter boost voltage is set to approximately 240 VAC, (except where specifically noted in table 1 in Supplement 746026), and the starter run voltage is selectable to be 52, 73, or 94 VAC. Boost times are selectable in software to be either 1.2, 1.5, 1.9, or 2.5 seconds. Therefore, the generator may be configured to be compatible with stator types as per table 1 only. If the desired tube type is not listed, please I product for assistance.

WARNING:

2.6.1

240 VAC IS PRESENT ON THE LOW SPEED STARTER BOARD AT ALL TIMES THAT THE GENERATOR IS SWITCHED ON. TAKE APPROPRIATE PRECAUTIONS WHEN SERVICING THIS BOARD

Low Speed Starter Tube Select Table See Supplement 746026 which immediately follows this chapter.

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2

Low Speed Starter Boost Voltage Selection Follow the steps below to and configure the correct low speed starter boost voltage. 1.

Confirm the required BOOST VOLTAGE for the selected tube type per table 1 in supplement 746026, which follows chapter 2. The requirement for the vast majority of tubes in table 1 is 240 V. For tubes that require 120 V boost, this is noted along with the run voltage, boost time, etc for that tube. • Refer to figure 2-6 (power supply auxiliary transformer). Locate this transformer under the power input board; refer to chapter 1 for details. • If there is only one connection on the 120V tap on the power supply auxiliary transformer, the boost voltage is set to 240 VAC. • If there are two connections on the 120V tap, the boost voltage is set to 120 VAC. • Confirm the correct boost voltage at F1 on the low speed starter board with a suitable voltmeter. • Go to 2.6.3 if the boost voltage is properly set for the selected tube type and therefore does NOT need to be changed.

2.

If the boost voltage tap on the power supply auxiliary transformer needs to be changed from 240V to 120V, proceed as follows: • Loosen the clamping screws for the 240V tap and for the 120V tap. • Move the boost voltage lead from the 240V tap to the 120V tap. The boost voltage lead is the lead that connects directly to J1 on the low speed starter board. Do not disturb the other leads on the 120V and / or 240V taps. • Ensure that the wires are positioned between the two metal clamps on the transformer terminal block. • Retighten both of the clamping screws. • Confirm the correct boost voltage at F1 on the low speed starter board with a suitable voltmeter.

3.

If the boost voltage tap on the power supply auxiliary transformer needs to be changed from 120V to 240V, proceed as follows: • Loosen the clamping screws for the 120V tap and for the 240V tap. • Move the boost voltage lead from the 120V tap to the 240V tap. The boost voltage lead is the lead that connects directly to J1 on the low speed starter board. Do not disturb the other leads on the 120V and / or 240V taps • Ensure that the wires are positioned between the two metal clamps on the transformer terminal block. • Retighten both of the clamping screws. • Confirm the correct boost voltage at F1 on the low speed starter board with a suitable voltmeter.


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Low Speed Starter Run Voltage Selection Follow the steps below to and configure the correct low speed starter run-voltage. 1.

Note the required RUN VOLTAGE for the selected tube type per table 1 in Supplement 746026, which follows chapter 2. Then confirm the low speed starter run-voltage in the generator. This is determined by the run-voltage setting on the power supply auxiliary transformer. Refer to figure 2-6. • Locate this transformer under the power input board; refer to chapter 1 for details. • Locate the run-voltage output on the transformer. This will be set to the 52V, 73V, or 94V tap, and must match the required run-voltage for the selected tube in table 1. • Go to 2.6.4 if the run-voltage setting is correct for the selected tube type, and therefore does NOT need to be changed.

2.

If the run-voltage setting on the power supply auxiliary transformer needs to be changed, proceed as follows: • Loosen the clamping screws for the current run-voltage tap, and for the required run-voltage tap. • Move the run-voltage output lead from the current tap position to the required tap position (52V, 73V, or 94V). Ensure that the wire is positioned between the two metal clamps on the transformer terminal block. • Retighten both of the clamping screws.

Figure 2-6: Low speed run-voltage tap selection

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2

Low Speed Starter Boost Time Selection Follow the steps below to and configure the low speed starter boost time. 1.

Ensure that jumper JW1 on the auxiliary board is in the “.15S” position. This sets the hardware boost time to the minimum value. The boost time is then set in software as described below.

2.

Refer to chapter 3, section 3.5.6 for the procedure for setting the actual boost time.

NOTE: CONFIRM PROPER LOW SPEED STARTER CONFIGURATION USING A SUITABLE TACHOMETER BEFORE MAKING ANY EXPOSURES.

2.7.0

INITIAL RUN-UP This section describes the procedure for initial power-on of the generator after it has first been installed. PLEASE OBSERVE THE FOLLOWING POINTS REGARDING THE MAIN DISTRIBUTION TRANSFORMER: • IF USING A DISTRIBUTION TRANSFORMER WITH AN ISOLATED SECONDARY, THE SECONDARY WINDING MUST BE A WYE (STAR) CONFIGURATION WITH THE CENTER POINT GROUND REFERENCED. DO NOT USE A DELTA CONFIGURED SECONDARY AS THERE IS NO GROUND REFERENCE IN THIS CONFIGURATION. • IF USING AN AUTOTRANSFORMER TYPE DISTRIBUTION TRANSFORMER, THE A.C. INPUT TO THE TRANSFORMER MUST BE GROUND REFERENCED.

2.7.1

Initial Voltage Measurements 1.

that the mains voltage and current capacity is correct for the generator installation per GENERATOR POWER REQUIREMENTS in Chapter 1 of this manual.

2.

Temporarily remove the safety cover over the main input fuses in the generator.

3.

If the mains supply is compatible with the generator, switch on the main breaker and/or the disconnect switch and check for the following voltages:

NOTE:

DO NOT SWITCH THE GENERATOR ON AT THIS TIME (ONLY THE AC MAINS TO THE GENERATOR IS TO BE SWITCHED ON).

WARNING:

USE EXTREME CARE IN MEASURING THESE VOLTAGES. ACCIDENTAL WITH MAINS VOLTAGES MAY CAUSE SERIOUS INJURY OR DEATH. MAINS VOLTAGE WILL BE PRESENT INSIDE THE GENERATOR CABINET, EVEN WITH THE CONSOLE SWITCHED OFF. THE DC BUS CAPACITORS PRESENT A SAFETY HAZARD FOR A MINIMUM OF 5 MINUTES AFTER THE GENERATOR HAS BEEN SWITCHED OFF. CHECK THAT THESE CAPACITORS ARE DISCHARGED BEFORE TOUCHING ANY PARTS IN THE GENERATOR.


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Initial Voltage Measurements (Cont) 4.

5.

Measure and record the voltage across the main line fuses in the generator. Single phase units will only use one set of voltage measurements. L1 phase to L2 phase: ______ VAC.

L1 phase to ground: ______ VAC.

L1 phase to L3 phase: ______ VAC.


L2 phase to L3 phase: ______ VAC.


Are these voltages within specification for the unit as per Chapter 1? For 3 phase units, the phase to ground voltage should be 230 V ± 10 % for 400 V units, and 277 V ± 10 % for 480 V units. For single phase 230 V units, the line to ground voltage should be 115 V ± 10 %. ___ Check.

BEFORE CONTINUING, REFER TO SECTION 2.7.2 OR 2.7.3 FOR THE PROCEDURE FOR ADJUSTING LINE VOLTAGE TAPS ON THE 24 V INTERFACE / CONSOLE POWER TRANSFORMER AND ON THE POWER SUPPLY AUXILIARY TRANSFORMER. 6.

Switch OFF the mains power to the generator. that there is no line voltage present, then replace the safety cover on the main input fuse block.

7.

Switch the mains power ON again, then switch the generator ON at the console.

8.

that the red LED (DC BUSS OK) located on the power input board in the main cabinet is lit. ___ Check.

9.

Switch off the generator, then switch back ON after approximately 10 seconds. Observe the startup sequence on the console APR display. • The generator type / model may be briefly displayed. • The software revision will be shown while the console runs a series of diagnostic tests.

10.

that the following LED’s on the auxiliary board in the main cabinet are lit: D2 D3 D29 D30 D31

Page 2-14

CNTCTR CLSD S.S. OK +12V -12V +/- 35V

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Single Phase Primary Tap Selection THIS SECTION APPLIES TO SINGLE PHASE GENERATORS ONLY. ENSURE THAT THE AC MAINS IS SWITCHED OFF AND LOCKED OUT, AND THAT ALL CAPACITORS ARE DISCHARGED BEFORE PROCEEDING. 1.

Note the position of the 208 / 240V tap on the power supply auxiliary transformer (this is factory set to 240 VAC). Refer to figure 2-6, this shows the locations of the transformer taps.

2.

Based on the line voltage measured in section 2.7.1, step 4, set the tap referenced in the previous step as follows. Refer to figure 2-7, this shows the line voltage taps schematically. • Use the 208V tap if the line voltage is 215 VAC or less. • Use the 240V tap if the line voltage is 216 VAC or higher.

Figure 2-7: Schematic, primary of power supply aux transformer


Ch # 740914-02

Rev. P

Page 2-15

2

Installation

2.7.2

I Canada Inc.

Single Phase Primary Tap Selection (Cont) 3.

Note the position of the 208 / 230V tap on the 24V interface / console power transformer (this is factory set to 230 VAC). Refer to figure 2-8, this shows the transformer as viewed from the left side of the generator.

4.

Based on the line voltage measured in section 2.7.1, step 4, set the 24V interface / console power transformer primary voltage tap as follows: • Black to pin 4 (208V tap) if the line voltage is 215 VAC or less. • Black to pin 6 (230V tap) if the line voltage is 216 VAC or higher.

Figure 2-8: 24V interface / console power transformer, terminal view

2.7.3

Three Phase Primary Tap Selection THIS SECTION APPLIES TO 400 VAC THREE PHASE GENERATORS ONLY. NO TAP CHANGE IS NEEDED ON 480 VAC UNITS. ENSURE THAT THE AC MAINS IS SWITCHED OFF AND LOCKED OUT, AND THAT ALL CAPACITORS ARE DISCHARGED BEFORE PROCEEDING. 1.

Note the position of the 380 / 400V tap on the power supply auxiliary transformer (this is factory set to 400 VAC). Refer to figure 2-6, this shows the locations of the transformer taps.

2.

Based on the line voltage measured in section 2.7.1, step 4, set the tap referenced in the previous step as follows. Refer to figure 2-7, this shows the line voltage taps schematically. • Use the 380V tap if the line voltage is 389 VAC or less. • Use the 400V tap if the line voltage is 390 VAC or higher.

Page 2-16

Rev. P


Ch # 740914-02

I Canada Inc. 2.8.0

Installation

2

TUBE MA AUTO CALIBRATION It is recommended that the generator be tested at this point with only the rotor and high tension cables connected. The generator should be able to complete an X-ray tube calibration and seasoning cycle without other equipment connected to the generator (other than the basic interlocks as noted below). This will allow for easier fault isolation as each section of the system is connected and tested. Before being able to make X-ray exposures, the room door interlock must be closed and the thermal switch must be closed. Prior to beginning tube auto calibration (per the procedure in chapter 3), the tube(s) used in this installation must be properly selected, and the generator kV and kW limits should be programmed. Refer to chapter 3. It is recommended that the tube(s) be conditioned (seasoned) before beginning tube auto calibration; refer to chapter 6.

2.9.0

FINAL CHECKS The room interface connections may now be completed. These items are described in 2.5.8. •

When finished all wiring, check that all connections are tight and secure.

• •

Check that all cables are dressed neatly inside the main cabinet, and secured as necessary. Reconnect any grounds that have been removed from covers. Then reinstall all covers before placing the generator into service.

NOTE:

THE INSTALLER SHOULD ENSURE THAT ALL CABLE CONNECTIONS TO THE GENERATOR ARE SECURE, AND ALL CABLES EXTERNAL TO THE GENERATOR ARE ADEQUATELY PROTECTED AGAINST ACCIDENTAL DISCONNECTION.

2.10.0 UTILITY SOFTWARE The optional I utility software allows for data communication between the console and an external computer. This provides a “virtual storage oscilloscope” that displays key waveforms and displays data not otherwise available, and allows ing and ing of EEPROM, tube, and APR data. It also allows editing of film / screen names and APR text. A computer with an RS-232 port (i.e. laptop) and a serial cable are required to run the utility software and to interface to the console. The serial cable to connect to the console is a special cable that must be ordered from the factory. The part number of this cable to order is 735184-00.


Ch # 740914-02

Rev. P

Page 2-17

2

Installation

I Canada Inc.


Page 2-18

Rev. P


Ch # 740914-02

I Canada Inc

X-Ray Tube Stator Compatibility Tables

SUPPLEMENT X-RAY TUBE STATOR COMPATIBILITY TABLES CONTENTS:

1.0 2.0 3.0

INTRODUCTION............................................................................................................................................. 2 LOW SPEED STARTER TUBE SELECT TABLE........................................................................................... 3 DUAL SPEED STARTER TUBE SELECT TABLE ......................................................................................... 7

X-Ray Generator Service Manual Supplement

746026-00

Rev. H

Page 1

X-Ray Tube Stator Compatibility Tables 1.0

I Canada Inc

INTRODUCTION This supplement contains the X-Ray Tube Stator Compatibility Tables for the Low Speed Starter and the Dual Speed Starter.

The Dual Speed Starter table does not apply to the Indico 100L model.

Page 2

Rev. H


746026-00

I Canada Inc 2.0


LOW SPEED STARTER TUBE SELECT TABLE

TUBE TYPE (HOUSING) CGR Statorix 200A/240/260 550 (50/110 Ω 24 slot)

Chirana Rotax KA 125 20/50 Ω stator Chirana Rotax KA 125 20/20/20 Ω stator Comet DO7 25/50 Ω stator Comet DO9 25/50 Ω stator Comet DO9 25/50 Ω stator Comet DO10 25/50 Ω stator Comet DX10 25/50 Ω stator Comet XSTAR8 XSTAR74 25/50 Ω stator Dunlee PX1300 3” anode “S” stator (15/30 Ω) Dunlee PX1400 4” anode “S” stator (15/30 Ω)

GE Maxiray 75 3” anode 23/23 Ω equal impedance “E” stator

TABLE 1: TUBE TYPES (LOW SPEED STARTER) TUBE TYPE RUN BOOST SHIFT (INSERT) VOLTAGE TIME CAPAC 94 VAC

2.5 Sec

12.5 µF

LOW SPD STARTER PART NO. 732752-01

73 VAC

1.5 Sec

33 µF

732752-00

RIK-T 30/50 1.2/2.0

52 VAC

1.5 Sec

732752-04

DX7

52 VAC

1.5 Sec

100 µF 52 mH Inductor 33 µF

732752-00

DX9 0.6/2.0 DX9 1.2/2.0 DX91HS DX92HS DX93HS DX10HS 0.6/1.0 DX10HS 1.0/2.0 DX101HS DX104HS DX105HS XST-8 XST-74

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

PX1302 PX1312

52 VAC

2.5 Sec

33 µF

732752-00

PX1429 PX1431 PX1436 PX1482 PX1483 0.6/1.0 11° 0.6/1.5 15° 1.0/2.0 15°

52 VAC

2.5 Sec

33 µF

732752-00

73 VAC

1.5 Sec

45 µF

732752-02

MN640 M641 MN641 M643 MS740 MSN742 RN620 RN640 RSN722 RSN742 RIK-T 12/50 0.8/2.0


746026-00

Rev. H

Page 3


2.0

LOW SPEED STARTER TUBE SELECT TABLE (Cont) TUBE TYPE (HOUSING) GE Maxiray 100 4” anode 23/23 Ω equal impedance “E” stator

Gilardoni Rotagil S/AS

IAE C52 Super C100 20/40 Ω stator IAE C52 C352 C52 Super 20/40 Ω stator IAE C52 C352 20/40 Ω stator Philips ROT350 ROT351 Siemens Opti-150 “S” stator (14/37 Ω) Toshiba Rotanode XH-106V-2 XS-RB stator Toshiba Rotanode XH-106V-2 XS-AL stator

Page 4

I Canada Inc

TUBE TYPE (INSERT) 0.3/1.0 11° 0.6/1.0 11° 0.6/1.2 11° 0.6/1.5 11° 0.6/1.5 12° 0.6/1.25 12.5° 1.0/2.0 15° AR1130 0.6/1.2 AR2050 0.6/1.2 AR3000-1 1.0/2.0 AR3060 1.0/2.0 AR30100 0.6/2.0 AR40100 0.6/1.3 AR9000-1 0.6/1.3 AR9000-2 0.6/1.3 RTC 600HS RTC 700HS RTC1000HS RTM 101H/HS RTM 102H/HS RTM 90H/HS RTM 92H/HS

73 VAC

1.5 Sec

45 µF


52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

RTM 78H/HS AP DX104 X40 X50/AH RO 12/30 (0.6/1.2) RO 17/50 (0.6/1.3) RO 20/50 (0.6/1.2) RO 30/50 (1.2/1.8) 30/52R 20/40

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

2.5 Sec

45 µF

732752-02

E7252X E7813X

52 VAC

1.5 Sec

33 µF

732752-00

E7239X E7242X E7252X E7813X

52 VAC

1.5 Sec

33 µF

732752-00

Rev. H

RUN VOLTAGE

BOOST TIME

SHIFT CAPAC

Note: The starter boost voltage is 120 VAC. This is only available with one-tube generators.


746026-00

I Canada Inc 2.0


LOW SPEED STARTER TUBE SELECT TABLE (Cont) TUBE TYPE (HOUSING) Toshiba Rotanode XH-121 XS-RB stator Toshiba Rotanode XH-126 Toshiba XH-157 Varian B100 DX52 Std “R”stator (16/50 Ω) Varian B100 “STD” stator (16/50 Ω) Varian B130 B150 Std “R”stator (16/50 Ω)

Varian Diamond Std “R”stator (16/50 Ω) Varian Emerald Std “R” stator Varian Saphire Std “R” stator

Varian DX62 300-400 kHu, “STD” stator (23/56 Ω)

Varian DX62U Universal 300-400 kHu, configured as “STD” or “R” stator (15/36 Ω)

TUBE TYPE (INSERT) E7132X E7239X E7240X E7299X E7242FX

52 VAC

1.5 Sec

33 µF


52 VAC

1.5 Sec

33 µF

732752-00

E7254X E7254FX E7255X A102 A132 A142

73 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

A102 A132 A142 A192 A272 A282 A286 A292 G256 G292 RAD13 RAD14 0.3/1.2 RAD14 0.6/1.2 RAD14 0.6/1.5 RAD 8 RAD 68 RAD 74 RAD21 RAD56 0.6/1.0 RAD56 0.6/1.2 RAD60 RAD92 RAD94 A192B A197 A256 A272 A282 A286 A292 A192B A197 A256 A272 A282 A286 A292

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00

52 VAC

1.5 Sec

33 µF

732752-00


RUN VOLTAGE

746026-00

BOOST TIME

Rev. H

SHIFT CAPAC

Page 5


I Canada Inc


Page 6

Rev. H


746026-00

I Canada Inc. 3.0


DUAL SPEED STARTER TUBE SELECT TABLE The Dual Speed Starter synthesizes its output frequencies independently of the line frequency and will operate all tubes at 60 and 180 Hz, unless a particular tube only has published ratings to operate at 150 Hz, as indicated in the table. In this case, the starter will output 150 Hz when set for these tubes.

TUBE TYPE (HOUSING) CGR Statorix 200A/240/260 550 (50/110 Ω 24 slot)

Comet DO7 25/50 Ω stator

TUBE TYPE (INSERT) MN640 M641 MN641 M643 MS740 MSN742 RN620 RN640 RSN722 RSN742 DX7

CODE Switches 1........5

00111

TABLE 2: TUBE TYPES (HIGH SPEED STARTER) H.S. H.S. H.S. H.S. BOOST L.S. L.S. START RUN BRAKE BRAKE TIME START RUN VOLTS VOLTS VOLTS TIME VOLTS VOLTS 450 150 120 3.0 sec 3.0 sec HIGH SPEED OPERATION ONLY

H.S. SHIFT CAPAC 3.4 uF

L.S. SHIFT CAPAC N/A

DUAL SPD STARTER PART NO. 733317-07 * 735925-07

6 uF

31 uF

733317-01 * 735925-01

(See note 1 at end of this table)

00000

LOW SPEED OPERATION ONLY

1.4 sec

240

50




DX9 0.6/2.0 DX9 1.2/2.0

00000


1.4 sec

240

50

6 uF

31 uF


733317-01 * 735925-01 (See note 5 at end of this table)


DI104 0.3/0.8 DI104 0.6/1.0 DI104 0.6/1.3 DI104 0.6/1.8

00011

420


80

150

3.0 sec

1.8 sec

240

80

6 uF

31 uF


746026-00

Rev. H

Page 7

I Canada Inc. 3.0


Dual Speed Starter Tube Select Table (cont)

TUBE TYPE (HOUSING)

TUBE TYPE (INSERT)


DI106 0.3/0.8 DI106 0.6/1.0 DI106 0.6/1.3

10011

Comet DO700WX 25/50 Ω stator

DI700 0.6/1.0 DI700 1.0/1.8

10011

Dunlee PX1300 3” anode “S“ stator (15/30 Ω)

PX1302 PX1312

Dunlee PX1400 4” anode “S” stator (15/30 Ω)

PX1429 PX1431 PX1436 PX1482 PX1483

01100

PX1429 PX1431 PX1436 PX1482

10000

PX1429 PX1431 PX1436 PX1482 PX1483

10110

(see note 2 at end of this table)

Dunlee PX1400 4” anode “S” stator (15/30 Ω)


H.S. START VOLTS 420

H.S. RUN VOLTS 80

H.S. BRAKE VOLTS 150

H.S. BRAKE TIME 3.0 sec

BOOST TIME 2.2 sec

L.S. START VOLTS 240

L.S. RUN VOLTS 80

H.S. SHIFT CAPAC 6 uF

L.S. SHIFT CAPAC 31 uF


420

80

150

3.0 sec

2.2 sec

240

80

6 uF

31 uF


11100

240

120

100

3.0 sec

2.3 sec

240

50

6 uF

31 uF


240

120

100

3.0 sec

4.5 sec

240

70

6 uF

31 uF


400

120

100

3.0 sec

1.9 sec

240

70

6 uF

31 uF


(see note 2 at end of this table)

Dunlee PX1400 4” anode “Q” stator (6/12 Ω)


340


60

746026-00

100

3.0 sec

Rev. H

1.0 sec

240

70

20 uF

60 uF

733317-02 * 735925-02

Page 8

I Canada Inc. 3.0



TUBE TYPE (HOUSING) GE Maxiray 75 (3” anode) 23/23Ω equal impedance “E” stator GE Maxiray 100 (4” anode) 23/23 Ω equal impedance “E” stator Gilardoni Rotagil

TUBE TYPE (INSERT) 1.0/2.0 15° 0.6/1.0 11°


01110


H.S. RUN VOLTS 90

H.S. BRAKE VOLTS 80


BOOST TIME 0.9 sec


L.S. RUN VOLTS 70



DUAL SPD STARTER PART NO. 733317-03 * 735925-03 (See note 5 at end of this table)

0.3/1.0 11° 0.6/1.0 11° 0.6/1.2 11° 0.6/1.5 11° 0.6/1.25 12.5° 1.0/2.0 15° AR11-30 AR30-60

00101

400

90

80

3.0 sec

1.0 sec

230

70

7.5 uF

47 uF

733317-03

* 735925-03 (See note 5 at end of this table)

10101


1.4 sec


220 50 Hz

60 50 Hz

6 uF

31 uF

733317-01


Gilardoni Rotagil A/A5

AR20-50 AR30-100 AR40-100

01101

IAE C52 Super C100 20/40 Ω stator

RTC 600HS RTC 700HS RTC 1000HS RTM 101H/HS RTM 102H/HS RTM 90H/HS RTM 92H/HS

11011

IAE C52 C352 C52 Super 20/40 Ω stator

340 150 Hz

60 150 Hz

80

3.0 sec

1.4 sec

220 50 Hz

60 50 Hz

6 uF

31 uF

733317-01


440

100

120

1.8 sec

1.0 sec

220

80

5 uF

45 uF


11011

440


100

120

1.8 sec

1.0 sec

220

80

5 uF

45 uF


746026-00

Rev. H

Page 9

I Canada Inc. 3.0


Dual Speed Starter Tube Select Table (cont) TUBE TYPE (INSERT)

IAE C52 C352 20/40 Ω stator

RTM 78H/HS AP DX104 X40 X50/AH

IAE tubes AND standard “R” stator tubes

Dual speed starters 733317-08 / 735925-08 are special configurations. These may be jumperconfigured to IAE tubes that require dual speed starter 733317-05 / 735925-05 per this table, or to “R” type stators that use dual speed starter 733317-01 / 735925-01 per this table. Please refer to note 3 at the end of this section before attempting to use this dual speed starter configuration. RO 12/30 00000 1.4 sec 240 50 LOW SPEED OPERATION ONLY (See note 1 at end of this table) (0.6/1.2) RO 17/50 (0.6/1.3) RO 20/50 (0.6/1.2) RO 30/50 (1.2/1.8) SRO 25/50 00000 400 100 100 3.0 sec 1.4 sec HIGH SPEED (0.6/1.0) OPERATION ONLY SRO 33/100 (See note 1 at end of (0.6/1.2)

Philips ROT350 ROT351


CODE


TUBE TYPE (HOUSING)

Switches 1........5

11011

H.S. RUN VOLTS 100



BOOST TIME 1.0 sec


L.S. RUN VOLTS 80




5 uF

30 uF

6 uF

31 uF

6 uF

31 uF

RO 20/50 (0.6/1.2)

00000

400


100

100

3.0 sec

1.4 sec

240

50

733317-08 * 735925-08


6 uF

31 uF

733317-01


this table)



6 uF

31 uF


746026-00

Rev. H

Page 10

I Canada Inc. 3.0



TUBE TYPE (HOUSING) Philips ROT500 Philips ROT500

TUBE TYPE (INSERT) SRM 03/10 (0.3/1.0) SRM 10/80 (0.3/1.0)

01111


H.S. RUN VOLTS 50



1.8 sec

01111

420

50

150

3.0 sec

1.8 sec


BOOST TIME


L.S. RUN VOLTS 50

HIGH SPEED OPERATION ONLY


L.S. SHIFT CAPAC 37.5 uF

12.5 uF

37.5 uF

5 uF

N/A

5 uF

45 uF

DUAL SPD STARTER PART NO. 733317-10 * 735925-10 733317-10 * 735925-10


Siemens Biangulix 8500 RPM (configured for 150 Hz operation) Siemens Opti-150 “S” stator

BI 125/20/40

11101

400 150 Hz

90 150 Hz

80

3.0 sec

1.9 sec

HIGH SPEED OPERATION ONLY

733317-04


30/52R 20/40

00000

Siemens OptiTop 150/40/80HC-100L 150/40/80HC-102L 14/37 Ω stator

01011

Siemens Optilix SV150/40/80C-100L SV150/30/50C-100L

01011

Siemens RAY12S_1, RAY14S_1

11111

400

400

400

400


90

80

80

50

746026-00

80

120

120

150

3.0 sec

3.0 sec

3.0 sec

3.0 sec

Rev. H

1.9 sec

1.0 sec

1.0 sec

1.4 sec

HIGH SPEED OPERATION ONLY (See note 1 at end of this table) 240 50 HIGH SPEED OPERATION ONLY (See note 1 at end of this table) 240 80 HIGH SPEED OPERATION ONLY (See note 1 at end of this table) 240 80 240 50

733317-05


5 uF

30 uF


5 uF

30 uF

733317-06


5 uF

30 uF

733317-13 * 73592513 (See note 4 at end of this table)

Page 11

I Canada Inc. 3.0



Toshiba XH-106V-2

E7252X E7813X

00100


Toshiba XH-106V-2 XS-AL stator

E7239X E7242X E7252X E7813X

10111

220

Toshiba XH-121

E7132X E7239X E7240X E7299X

00000

Toshiba XH-126

E7242FX

00000

Toshiba XH-157

E7254X E7254FX E7255X

TUBE TYPE (HOUSING)

TUBE TYPE (INSERT)


H.S. RUN VOLTS 100



60

80

3.0 sec


BOOST TIME 1.2 sec


L.S. RUN VOLTS 50



1.2 sec

130

50

6 uF

46 uF

1.4 sec

240

50

6 uF

31 uF

1.4 sec

240

50

6 uF

31 uF

2.2 sec

240

80

6 uF

31 uF


LOW SPEED OPERATION ONLY (See note 1 at end of this table)

10011

420


80

746026-00

150

3.0 sec

Rev. H

DUAL SPD STARTER PART NO. 733317-01 * 735925-01 (See note 5 at end of this table) 733317-09 * 735925-09 (See note 5 at end of this table) 733317-01 * 735925-01 (See note 5 at end of this table) 733317-01 * 735925-01 (See note 5 at end of this table) 733317-01 * 735925-01 (See note 5 at end of this table)

Page 12

I Canada Inc. 3.0



Varian B100 DX52 Std “R” stator (16/50 Ω)

A102 A132 A142

01000


Varian B100 “Q” stator (6/11 Ω) Varian B130 B150 Std “R” stator (16/50 Ω)

A102 A132 A142

11010

290

70

60

3.0 sec

0.8 sec

150

50

20 uF

60 uF

A192 A272 A282 A286 A292 G256 G292 A192 A272 A282 A286 A292 G256 G292 G1082 G1086 G1092 G1582 G1592

00000

400

100

100

3.0 sec

1.4 sec

240

50

6 uF

31 uF


00110

290

70

60

3.0 sec

1.3 sec

150

50

20 uF

60 uF

733317-02 * 735925-02

11110

400

100

150

3.0 sec

5.0 sec

240

70

6 uF

31 uF


TUBE TYPE (HOUSING)

Varian B130 B150 “Q” stator (6/11 Ω)

Varian B160 B180 “R” Stator (16/50 Ω)

TUBE TYPE (INSERT)



H.S. RUN VOLTS 100



746026-00

Rev. H

BOOST TIME 1.0 sec


L.S. RUN VOLTS 60



DUAL SPD STARTER PART NO. 733317-01 * 735925-01 (See note 5 at end of this table) 733317-02 * 735925-02

Page 13

I Canada Inc. 3.0



TUBE TYPE (HOUSING)

TUBE TYPE (INSERT)



H.S. RUN VOLTS 100



BOOST TIME 1.2 sec


L.S. RUN VOLTS 50



1.4 sec

240

50

6 uF

31 uF

DUAL SPD STARTER PART NO. 733317-01 * 735925-01 (See note 5 at end of this table) 733317-01 * 735925-01 (See note 5 at end of this table) 733317-01 * 735925-01 (See note 5 at end of this table)

Varian Diamond Std “R” stator

RAD13 RAD14 0.3/1.2 RAD14 0.6/1.2 RAD14 0.6/1.5

00100

Varian Emerald Std “R” stator

RAD 8 RAD 68 RAD 74

00000

Varian Saphire Std “R” stator (20/50 Ω)

RAD21 RAD56 0.6/1.0 RAD56 0.6/1.2 RAD60 RAD92 RAD94 A192B A197 A256 A272 A282 A286 A292 A192B A197 A256 A272 A282 A286 A292

10100

400

100

100

3.0 sec

2.3 sec

240

50

6 uF

31 uF

00000

400

100

100

3.0 sec

1.4 sec

240

50

6 uF

31 uF


00000

400

100

100

3.0 sec

1.4 sec

240

50

6 uF

31 uF


Varian DX62 300-400 kHu, “STD” stator (23/56 Ω)

Varian DX62U Universal 300-400 kHu, configured as “STD” or “R” stator (15/36 Ω)

LOW SPEED OPERATION ONLY (See note 1 at end of this table)


746026-00

Rev. H

Page 14

I Canada Inc. 3.0



THE DUAL SPEED STARTER USES MODULATION STRATEGIES TO OBTAIN THE DESIRED OUTPUTS. MEASURED VOLTAGES MAY NOT AGREE WITH THOSE LISTED IN THE TABLE. HOWEVER, THE CURRENTS FLOWING IN THE STATOR WINDINGS ARE EQUIVALENT TO THOSE THAT WOULD EXIST IF THE STATOR WAS EXCITED WITH THESE VOLTAGES.

*

Dual speed starter part numbers 733317-XX are used in 400 VAC 3φ generators / power supplies and in 480 VAC 3φ generators / power supplies with a line adjusting transformer. Dual speed starter part numbers 735925-XX are used in 230 VAC 1φ generators / power supplies and in 480 VAC 3φ direct input generators / power supplies (using no line adjusting transformer).

NOTE 1:

Tube types designated as low speed only or high speed only must be programmed for low speed only or high speed only operation. Refer to chapter 3, the section Tube Selection for details (Indico 100 only). For some tubes listed as high speed only, the starter may be capable of low speed operation but the Manufacturers data sheet for the Insert lists high speed only and therefore the low speed parameters that affect the Housing/Stator are shown in Grey text.

NOTE 2:

Two settings are shown for the Dunlee PX1400 tube with “S” stator. The settings with the 4.5 sec boost times are per older Dunlee data sheets. The values with the 1.9 sec boost times are per newer Dunlee data sheets (May 2002). The installer must tube compatibility per the appropriate Dunlee tube data sheet.

NOTE 3:

Dual speed starters 733317-08 / 735925-08 have a jumper selectable phase shift capacitor that allows selection of 5 uF and 30 uF capacitors for operation with IAE tubes that use dual speed starter 733317-05 / 735925-05 as per table 2, or this may be set to 6 uF and 31 uF for operation with “R” type stators that use dual speed starter 733317-01 / 735925-01 as per table 2. THIS STARTER IS TYPICALLY FACTORY SET TO THE 5 uF AND 30 uF POSITION. CONFIRM PROPER CONFIGURATION PER THE SECTION “CONFIGURING DUAL SPEED STARTER 733317-08 / 735925-08” IN CHAPTER 2 BEFORE PROCEEDING.

NOTE 4:

Dual Speed Starters 733317-13 / 735925-13 are special configurations. These may be programmed to IAE tubes that require Dual Speed Starter 733317-05 / 735925-05 per this table, or to ‘R’ type stators that use Dual Speed Starter 733317-01 / 735925-01 per this table. This configuration s tubes requiring a 5 or 6uF High Speed Starter capacitor. Capacitor selection is made by relays located on the Dual Speed Starter.


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NOTE 5:

New generator configurations may substitute the dual speed starter part numbers listed in table 2 with the alternate versions per the table below: LISTED TYPE 733317-01, 735925-01 733317-03, 735925-03 733317-05, 735925-05 733317-06, 735925-06 733317-08, 735925-08 733317-09, 735925-09


ALTERNATE 733317-08, 12, 13, 735925-08, 12, 13 733317-12, 735925-12 733317-13, 735925-13 733317-13, 735925-13 733317-13, 735925-13 733317-12, 13, 735925-12, 13

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Interfacing, Programming, & Calibration

3

CHAPTER 3 INTERFACING, PROGRAMMING, AND CALIBRATION CONTENTS: 3.1.0 INTRODUCTION.................................................................................................................................................... 3-2 3.2.0 WIRING TO INPUTS & OUTPUTS........................................................................................................................ 3-2 3.2.1 Inputs .................................................................................................................................................................. 3-2 3.2.2 Outputs ............................................................................................................................................................... 3-4 3.2.3 Inputs & Outputs (simplified schematic) ............................................................................................................. 3-5 3.2.4 AEC Interconnect ............................................................................................................................................... 3-6 3.2.5 AEC Left / Right (Field A / Field C) Reversal ..................................................................................................... 3-7 3.3.0 GENERATOR PROGRAMMING ........................................................................................................................... 3-8 3.3.1 Generator Utility Functions (overview) ............................................................................................................... 3-8 3.4.0 LEVEL 1 UTILITIES ............................................................................................................................................... 3-8 3.4.1 APR Save ........................................................................................................................................................... 3-9 3.4.2. Date and Time ................................................................................................................................................. 3-10 3.4.3. Exit................................................................................................................................................................... 3-10 3.4.4 Utilities .............................................................................................................................................................. 3-10 3.5.0 LEVEL 2 UTILITIES ............................................................................................................................................. 3-10 3.5.1 Calibration ........................................................................................................................................................ 3-12 3.5.2 AEC Adjustment ............................................................................................................................................... 3-12 3.5.3 Focus Disable................................................................................................................................................... 3-12 3.5.4 Exp. Counter..................................................................................................................................................... 3-13 3.5.5 LCD mode ........................................................................................................................................................ 3-13 3.5.6 Configuration .................................................................................................................................................... 3-13 3.5.7 Tube Selection.................................................................................................................................................. 3-14 3.5.8 Receptor Conf. ................................................................................................................................................. 3-15 3.6.0 HARDWARE PROGRAMMING ........................................................................................................................... 3-16 3.6.1 Speaker Volume ............................................................................................................................................... 3-16 3.6.2 LCD Backlight Brightness adjustment.............................................................................................................. 3-16 3.7.0 AEC PROGRAMMING AND CALIBRATION ....................................................................................................... 3-17 3.7.1 AEC Limitations: Minimum and Maximum Exposure Times ............................................................................ 3-17 3.7.2 Precalibration Notes ......................................................................................................................................... 3-17 3.7.3 Navigating the AEC Adjustment menus ........................................................................................................... 3-18 3.7.4 AEC Calibration (Table Bucky)......................................................................................................................... 3-18 3.7.5 AEC Calibration (Wall Bucky)........................................................................................................................... 3-23


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3.1.0

INTRODUCTION This Chapter describes the interfacing of the generator to the Bucky(s), interlocks, collimator lamp and tube stand locks, and to the AEC chambers if the AEC option is fitted. Programming and AEC calibration of the generator is also described in this Chapter.

3.2.0

WIRING TO INPUTS & OUTPUTS

3.2.1

NOTE:

THE INSTALLER MUST PROVIDE THE NECESSARY INTERFACING CABLES FOR WIRING TO THE GENERATOR INPUTS AND OUTPUTS DESCRIBED IN THIS SECTION.

WARNING:

LINE VOLTAGE IS PRESENT INSIDE THE GENERATOR AT ALL TIMES THAT THE MAIN DISCONNECT IS SWITCHED ON. FOR SAFETY, THE MAIN DISCONNECT SHOULD BE SWITCHED OFF AND LOCKED OUT WHILE CONNECTING ROOM EQUIPMENT.

Inputs The Bucky inputs, S.I.D. interlocks, room door interlock, and thermal switch inputs are opto coupled. This means that a relay , transistor, or other low impedance (≤ 100 Ω, 10 mA current rating) switching device must be connected across each of those inputs. Table 3-1 below defines the pinouts, polarity at the terminals and the logic condition required for that input. If using a directional switching device, such as a transistor, the polarity of the voltage seen by the switching device must be observed. This is shown in the table below. Refer also to figure 3-1. This is a pictorial drawing of the Bucky inputs and outputs, the interlock inputs, and the thermal switch inputs. Refer to 3.2.4 for details on AEC connections. WARNING:

Page 3-2

DO NOT DEFEAT THE 40″ OR 72″ S.I.D. INTERLOCKS, OR THE ROOM DOOR INTERLOCK UNLESS THE CORRESPONDING DEVICE IS NOT PRESENT. CONSULT THE APPLICABLE REGULATIONS BEFORE BYING ANY EXPOSURE INTERLOCKS. DO NOT VIOLATE ANY REGULATIONS FOR X-RAY SAFETY. NEVER BY THE X-RAY TUBE THERMAL SWITCH INTERLOCK. OBSERVE IONIZING RADIATION PERSONAL PROTECTION AT ALL TIMES.

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Inputs (Cont) NOTE:

IN THIS MANUAL, THE WALL BUCKY IS REFERRED TO AS BUCKY 1, AND THE TABLE BUCKY IS BUCKY 2.

CUSTOMER INTERFACE BOARD J2-5 (+) J2-6 (-) J3-5 (+) J3-6 (-) J3-1 (+) J3-2 (-) J2-7 (+) J2-8 (-) J2-9 (+) J2-10 (-) J3-4 (+) J3-3 (-)

DEFINITION B1: Bucky 1 ready. A closure from pin 5 to 6 indicates BUCKY 1 READY. B2: B1: Bucky 2 ready. A closure from pin 5 to 6 indicates BUCKY 2 READY. B2: Door interlock. A closure from pin 1 to 2 is required to make an exposure. This indicates that the room door is closed. 40 inch (100 cm) S.I.D. interlock. A closure from pin 7 to 8 indicates the tube is at a 40 inch (100 cm) S.I.D. 72 inch (180 cm) S.I.D. interlock. A closure from pin 9 to 10 indicates the tube is at a 72 inch (180 cm) S.I.D. Thermal switch. A closure from pin 4 to 3 is required to make an exposure. This indicates normal operation of the X-ray tube. Table 3-1: Generator inputs


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Outputs Table 3-2 shows the Bucky and auxiliary power outputs from the generator. Refer also to figure 3-1. CUSTOMER INTERFACE BOARD J2-1 J2-2 J2-3 J2-4 J3-7 J3-8 J3-9 J3-10 J4-1 J4-2 J4-5 (+) J4-6 (-)

DEFINITION B4: 110 VAC return (Bucky 1). B6: Ground (Bucky 1). B8: 110 VAC out (Bucky 1). B3: 110 VAC out (Bucky 1 start). B4: 110 VAC return (Bucky 2). B6: Ground (Bucky 2). B8: 110 VAC out (Bucky 2). B3: 110 VAC out (Bucky 2 start). 24 VAC @ 150 watts output for collimator light (unswitched). This output is rated for intermittent (collimator lamp) duty only, <10% duty cycle. 24 VDC @ 45 watts output for tube stand locks (unswitched).

Table 3-2: Generator outputs

IN SOME INSTALLATIONS, BUCKY START RELAYS K1 OR K2 ON THE CUSTOMER INTERFACE BOARD MAY DRIVE THE INPUTS OF OPTO COUPLERS OR OTHER LOW CURRENT DEVICES ON THE BUCKY. THE LEAKAGE CURRENT THROUGH THE R-C SNUBBER THAT IS CONNECTED ACROSS THE RELAY S (C2 AND R2 FOR K1, C11 AND R9 FOR K2) MAY BE SUFFICIENT TO ENERGIZE THE BUCKY INPUTS WHEN THE RELAYS ARE OPEN. IF THIS IS EXPERIENCED, THE SNUBBER SHOULD BE DEFEATED. REMOVING THE SERIES RESISTOR, PART OF THE R-C SNUBBER, WILL ELIMINATE THIS PROBLEM. Removing R2 open-circuits the snubber across the K1 s, removing R9 defeats the snubber across the s of K2.

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Inputs & Outputs (simplified schematic)

BUCKY 1 OUTPUTS

J2 1 2 3 4

AC RETURN 110 VAC +24 VDC BUCKY 1 START BUCKY 1 START COMMAND

+24 VDC

BUCKY 1 READY *

5 6

+5 VDC

+24 VDC 40" S.I.D. INTERLOCK +24 VDC

BUCKY 1 READY

72" S.I.D. INTERLOCK

40" SID INTERLOCK * 72" SID INTERLOCK *

BUCKY 2 OUTPUTS

7 8 9 10

J3 7 8 9 10

AC RETURN 110 VAC +24 VDC BUCKY 2 START BUCKY 2 START COMMAND

+24 VDC

BUCKY 2 READY *

5 6

+5 VDC

+24 VDC DOOR INTERLOCK BUCKY 2 READY

DOOR INTERLOCK *

1 2

+24 VDC THERMAL SWITCH

THERMAL SWITCH *

4 3

J4 24 VAC OUT 1 FOR COLLIMATOR LAMP 2 24 VDC OUT FOR TUBE STAND LOCKS

5 6

TO TABLE * 3-1REFER FOR REQUIRED FROM 24 VAC SOURCE

INPUT LOGIC LEVELS

+ FROM 24 VDC - SOURCE

FILE: SM_IO.CDR

Figure 3-1: J2, J3, J4 inputs and outputs (customer interface board)


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AEC Interconnect NOTE:

IF YOUR GENERATOR USES “CAEC” AEC CHAMBER(S), REFER TO SEPARATE SUPPLEMENT AT FRONT OF THIS MANUAL IN CONJUNCTION WITH THIS MANUAL.

Table 3-3 and figure 3-2 show the functions and signals at each pin of the AEC connectors J1 and J2 on the AEC board in the console. The AEC connections are directly compatible with ion chambers as per the compatibility statement / product description in chapter 1. AEC BOARD (J1 TABLE, J2 WALL) Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9

DEFINITION No connection. Field select A. This is configurable to select field C if required, refer to 3.2.5. Field select B. Reset / start. AEC input signal from chamber. Field select C. This is configurable to select field A if required, refer to 3.2.5. -15 VDC to chamber. +15 VDC to chamber. Ground.

Table 3-3: AEC board inputs / outputs

JW4 JW6

TO AEC CHAMBER

1 2 3 4 5 6 7 8 9

N/C

JW3

FLD A/C

JW5

FLD C/A FLD B

DRIVER CIRCUIT

RESET (START) +

AEC RAMP

+15 VDC

-15 VDC

FILE: SM_AEC.CDR

Figure 3-2: AEC interconnect (simplified schematic)

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AEC Left / Right (Field A / Field C) Reversal For normal AEC chamber orientation, the left field is designated field A and the right field is designated field C. This convention is reversed if the AEC chamber is reversed. Refer to configuration A and configuration B in figure 3-3 and table 3-4. Configuration C applies only to a limited number of AEC chamber models. Refer to the AEC chamber manufacturers literature to determine your chamber type.

Figure 3-3: AEC chamber configurations

CHAMBER MODEL Refer to compatibility statement / product description in chapter 1.

CONFIGURATION Refer to manufacturers data.

Table 3-4: Ion chamber compatibility and identification

The AEC board must be configured such that the left and right field select signals correctly select AEC fields A and C. This is done by inserting jumpers on the AEC board per table 3-5. Please confirm that these jumpers are correctly installed to match the chamber configuration in use. BOTH AEC CHAMBERS MUST BE CONFIGURATION A, OR CONFIGURATION B. THE AEC BOARD JUMPERS CONFIGURE THE LEFT / RIGHT (FIELD A / C) SELECTION FOR BOTH AEC CHAMBERS CONFIGURATION Configuration A Configuration B

AEC BOARD JUMPERS JW3, JW4 JW5, JW6 Table 3-5: AEC chamber identification

NOTE:

DO NOT JUMPER ANY COMBINATIONS OTHER THAN JW3 AND JW4, OR JW5 AND JW6. DO NOT REMOVE OR RECONFIGURE ANY OTHER FACTORY INSTALLED JUMPERS ON THE AEC BOARD.


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GENERATOR PROGRAMMING Programming of the generator is performed using the operator console. All programming menus are displayed in the LCD display window on the console. The nine “soft key” buttons (1 to 9 in the figure below) are used to navigate through the programming screens and to select and enter values in this section. In this section, SELECT means to press the button adjacent to the desired function shown in the LCD display window. TOGGLE means to press the stated button repeatedly to cycle through the available selections.

Figure 3-4: Programming / calibration mode reference

3.3.1

Generator Utility Functions (overview) This X-ray generator has two levels of utility functions. The level 1 utilities are available to the operator, and include minor functions such as setting the clock and enabling / disabling the APR editing function. Level two utilities are protected and include setup and calibration functions.

3.4.0

LEVEL 1 UTILITIES To access the level 1 utilities follow the steps below: Step 1. 2.

3.

Page 3-8

Action Start with the generator switched OFF. Press and hold the menu button [5] while pressing the POWER ON button on the console until the console beeps, (approximately 10 seconds).

Result

The generator will go through its start-up sequence, then display the screen shown below. This is the level 1 utility menu. The PREP and X-RAY LEDs are briefly lit during the console start-up sequence. This is a diagnostic test, and allows confirmation that the LEDs are functional. If an error message is presented after the start-up sequence, press OK and / or RESET to access the level 1 utility menu.

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LEVEL 1 UTILITIES (Cont) The level 1 utility menu presents the with 4 options.

APR SAVE OFF DATE & TIME

EXIT

UTILITIES In most cases, pressing the menu button [5] will return to the previous screen or the previous menu. This will assist in navigating through the screens in this section. The table below shows the functions available within each of the options in the level 1 utility menu.

3.4.1

APR SAVE OFF

•

Enables/disables the ability to make and then save changes to APR techniques (kV, mA etc, but NOT APR text changes).

DATE & TIME

•

Allows setting of the date and time.

EXIT

•

Returns to normal operating mode (non setup / programming mode).

UTILITIES

•

Accesses the level 2 utility functions.

APR Save Use these steps to enable / disable the ability to make and then save changes to APR techniques: Step 1.

2.

3. 4. 5.

Action From the level 1 utility menu select APR SAVE OFF. This is the default when the generator is switched on, the display will show APR SAVE ON if the APR save function has subsequently been changed to ON. In the APR EDIT AND SAVE CONTROL screen, a prompt APR SAVE OFF will display. Press the adjacent button to toggle the selection of APR SAVE OFF or APR SAVE ON. When the desired APR edit mode is selected, press the menu button [5] to return to the level 1 utility menu. With APR SAVE ON, press EXIT to return to the main APR screen. The procedure for making changes to the APR when in the normal operating mode is described in the operator’s manual. To reset the APR SAVE ON mode, switch the console OFF, then ON again. This will disable the ability to make further APR changes until the APR SAVE mode is subsequently enabled.


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LEVEL 1 UTILITIES (Cont)

3.4.2.

Date and Time

I Canada Inc.

Use these steps to set the date and time: Step 1. 2. 3. 4. 5.

3.4.3.

Action From the level 1 utility menu select DATE & TIME. Press ← or → to select the parameter to change (month, day, year, hour, or minute). The selection over the caret symbol ^ is the parameter that will be set in the next step. Press UP or DOWN to set the selected parameter. Time is set in 24 hour mode. Repeat steps 2 and 3 to set the remaining parameters. Note that the time does not increment when in the setup utility. Press the menu button [5] to return to the main level 1 utility screen.

Exit Use this step to access the APR menu. This is the console normal operating mode. Step 1.

3.4.4

Action From the level 1 utility menu select EXIT. The console will enter the normal operating mode.

Utilities Use these steps to access the level 2 utilities: Step 1. 2. 3.

3.5.0

Action From the level 1 utility menu select UTILITIES. Enter the at the prompt by pressing the button sequence [1], [2], [3], [4]. Refer to figure 3-4. A security screen will be presented. Select EXIT to return to the main level 1 utility screen. Select ACCEPT to display the main level 2 utility screen as per 3.5.0.

LEVEL 2 UTILITIES To access the level 2 utilities follow the steps in 3.4.4. The first screen of the level 2 utilities will be displayed. The level 2 utility menus present the with 16 options. Screen 1 of the level 2 utilities is shown below:

CALIBRATION AEC ADJUSTMENT EXPOSURE LOG FOCUS DISABLE

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EXP. COUNTER [MORE]

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Level 2 Utilities (Cont) Press [MORE] on the above screen to access screen 2 of the level 2 utilities, shown below:

LCD MODE CONFIGURATION TUBE SELECTION FILM PROGRAM

FILM SPEED [MORE]

Press [MORE] on the above screen to access screen 3 of the level 2 utilities, shown below:

MAS STEP SIZE RECEPTOR CONF. TUBE SEASONING

The table below shows the functions available within the level 2 utility menus. CALIBRATION

•

Selects the tube auto calibration routine.

AEC ADJUSTMENT

•

Selects AEC calibration mode.

EXPOSURE LOG

•

This function is not available.

FOCUS DISABLE

•

Disables one or both focal spots.

EXP. COUNTER

•

Accesses the exposure counter.

[MORE]

•

Accesses screen 2 of the level 2 utilities.

LCD MODE

•

Selects normal or reverse video for the LCD display.

CONFIGURATION

•

Allows the AEC function to be enabled or disabled. Also allows setting of AEC type (if used), setting of maximum kV, setting of filament standby current, selection of stator boost time (prep time), and setting of maximum output power (some models).

TUBE SELECTION

•

Allows the desired X-ray tube to be selected. Selecting a new X-ray tube erases the tube calibration data.

FILM PROGRAM

•


FILM SPEED

•


[MORE]

•

Accesses screen 3 of the level 2 utilities

MAS STEP SIZE

•


RECEPTOR CONF.

•

Allows programming of the wall or table receptors.

TUBE SEASONING

•



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Calibration The calibration function automatically establishes calibration curves relating filament current to tube current (mA) at three or four kV settings, depending on generator type. This allows the generator to predict the filament temperature (filament current) that will be required for any mA value over the full kV operating range. It is recommended that the X-ray tube be seasoned before attempting auto calibration, particularly if the tube has not been used for some time. Refer to Chapter 6 for the procedure to do this. Use these steps to perform the X-ray tube auto calibration function: Step 1.

2. 3. 4. 5. 6. 7.

8.

3.5.2

Action Ensure that the correct X-ray tube type is selected before beginning X-ray tube auto calibration. Refer to TUBE SELECTION in this Chapter to select the tube type. Ensure compatibility of the tube stator with the generator before proceeding, and all stator connections. From the level 2 utility menus select CALIBRATION. Select the focal spot to calibrate. Start with small (SM FOCUS). Press and hold the X-ray button (or use the optional handswitch) to begin the calibration procedure. When calibration is finished on the selected focal spot, COMPLETE.. will be displayed. Release the exposure switch at this point. Select the next focal spot to calibrate and repeat steps 4 and 5. Should the exposure switch be released before auto-calibration is complete, an error message will be presented. Exposures are not permitted on a tube which has not been calibrated on the selected focal spot. Press the menu button [5] to return to screen 1 of the level 2 utility screens.

AEC Adjustment Refer to AEC PROGRAMMING AND CALIBRATION at the end of this Chapter for the AEC calibration procedure. Tube auto calibration must be completed before attempting AEC calibration.

Exposure Log This function is not available.

3.5.3

Focus Disable This function provides the ability to disable focal spots should one of the filaments in the X-ray tube become damaged in the field. If both focal spots are disabled, an error message will be displayed. Use these steps to disable focal spot(s): Step 1. 2.

3.

Page 3-12

Action From the level 2 utility menus select FOCUS DISABLE. Select DISABLE SF to disable the small focus. Select DISABLE LF to disable the large focus. The ENABLED / DISABLED status of each focal spot is shown on the left side of the LCD display during this programming step, and also during start up of the generator. Press the menu button [5] to return to screen 1 of the level 2 utility screens.

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Exp. Counter This function allows the number of exposures taken on each focal spot of the X-ray tube to be viewed. Use these steps to view the exposure counter: Step 1. 2. 3.

Action From the level 2 utility menus select EXP. COUNTER. The exposure count for the small focus (SF) and large focus (LF) may be viewed on the LCD display. Press the menu button [5] to return to screen 1 of the level 2 utility screens.

[More] This accesses screen 2 of the level 2 utilities.

3.5.5

LCD mode This function allows setting of normal or reverse video on the LCD display. Use these steps to set the normal or reverse video: Step 1. 2. 3.

3.5.6

Action From the level 2 utility menus select LCD MODE. Select NORMAL for normal video, or INVERSE for reverse video. Press the menu button [5] to return to screen 2 of the level 2 utility screens.

Configuration This function allows global enabling or disabling of the AEC function, setting of the optional AEC type, setting of the maximum kV, and in some models setting of the maximum generator output power. Use these steps to set the above parameters: Step 1. 2.

Action From the level 2 utility menus select CONFIGURATION. Toggle button [1] to select AEC INHIBITED if the AEC function is to be disabled. This is normally selected if the optional AEC board is not fitted. Select 1 FIELD ION AEC for single field ion chamber(s), or ION CHAMBR TYPE 1 or ION CHAMBR TYPE 2 for three field ion chambers per the table below. The selection made in this step applies to both AEC chambers. AEC Selection

Compatible AEC chambers Start & Field RAMP and preamp Select (Active level) ION CHAMBR TYPE 1 AID ICX 153, 159, 162, 192 with 0 V + Ramp preamp 6067I. AID ICX 924 with CAEC preamp 61137E. ION CHAMBR TYPE 2 Comet 3 field Ion chamber with +12 VDC + Ramp preamp XP3-VSC. Vacutec 70125, 701125, 701135 with preamp 900. Refer to the compatibility statement / product description in chapter 1 for the compatible AEC device properties if your AEC chamber and preamplifier is not listed in the above table.


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Configuration (Cont) Step 3.

4. 5.

6.

7.

8.

3.5.7

I Canada Inc.

Action Press the KV MAX: UP button to increase the maximum kV. Press the DOWN button to decrease the maximum kV. The maximum kV may be adjusted between the limits of 80 and 125 kV or 80 to 150 kV depending on application. If the maximum kV is changed, the X-ray tube will need to be auto calibrated. Refer to the section Calibration in this chapter for the auto calibration procedure. DENSITY selection is not available. Select 30kW, 32.5kW, or 37.5kW for 1 phase generators, or 50kW for 3 phase 50 kW generators. Some single phase models will only allow the selection of 30 kW. Where selection of 32.5 and 37.5 kW IS available in the generator, the line voltage must be within the range of 230 to 253 volts AC. This function is not available on all models. IF THE POWER LEVEL IS CHANGED, THE CALIBRATION FUNCTION WILL NEED TO BE PERFORMED ON BOTH FOCAL SPOTS. Select FIL. STDBY. Toggle to set the approximate filament standby current. A: 2.00 amps B: 2.36 amps C: 2.60 amps D: 2.90 amps This must be set below the X-ray tube emission level, consistent with the X-ray tube manufacturers recommended filament standby current. Select PREP TIME. Toggle to set the approximate prep time. A: 2.5 seconds B: 1.9 seconds C: 1.5 seconds D: 1.2 seconds This must be set high enough to ensure that the anode is fully boosted before making an exposure. Refer to the X-ray tube data sheet. Confirm the prep time setting using a suitable tachometer to ensure proper anode RPM. Press the menu button [5] to return to screen 2 of the level 2 utility screens.

Tube Selection This function allows the desired X-ray tube to be selected from those displayed on the console. Other tube types may be available by ing new tube data to the EEPROM on the U board. Use these steps to select the desired X-ray tube: Step 1. 2.

3.

Page 3-14

Action From the level 2 utility menus select TUBE SELECTION. Select the desired tube by pressing the adjacent button. The selected tube type will be enclosed within the > and < symbols. NOTE THAT CHANGING THE TUBE TYPE WILL ERASE EXISTING CALIBRATION DATA. Press the menu button [5] to return to screen 2 of the level 2 utility screens.

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Film Program This function is not available.

Film Speed This function is not available.

[MORE] This accesses screen 3 of the level 2 utilities.

MAS STEP SIZE This function is not available.

3.5.8

Receptor Conf. This function allows the wall and table image receptors to be programmed. For each of these receptors, AEC may be ENABLED or DISABLED, and the wall Bucky or table Bucky may be ENABLED or DISABLED. If the wall or table Bucky is ENABLED, the wall or table Bucky selector(s) may be selected AND the generator will look for a Bucky ready signal. If the wall or table Bucky is DISABLED, the wall or table Bucky selector(s) may be selected BUT the generator will not require a Bucky ready signal to make an exposure. This selection is typically made if a grid cabinet is used. Use these steps to program the image receptors: Step 1. 2. 3.

4. 5.

6.

Action From the level 2 utility menus select RECEPTOR CONF. Toggle button [3] to select AEC: ENABLED or AEC: DISABLED for the wall Bucky. DISABLED will not allow AEC to be selected for the wall Bucky. Toggle button [4] to select BUCKY: ENABLED or BUCKY: DISABLED for the wall Bucky. DISABLED means that the generator will not require a Bucky ready signal to make an exposure. Toggle button [8] to select AEC: ENABLED or AEC: DISABLED for the table Bucky. DISABLED will not allow AEC to be selected for the table Bucky. Toggle button [9] to select BUCKY: ENABLED or BUCKY: DISABLED for the table Bucky. DISABLED means that the generator will not require a Bucky ready signal to make an exposure. Press the menu button [5] to return to screen 3 of the level 2 utility screens.

TUBE SEASONING This function is not available.


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HARDWARE PROGRAMMING

3.6.1

Speaker Volume

I Canada Inc.

The speaker in the console may be set to one of three loudness levels. To change the current speaker volume, perform the following steps. step 1. 2. 3. 4. 5. 6.

7.

Action Switch the generator OFF at the console. Turn the console on its face. A soft, clean cloth should be placed on the work surface to protect the console from damage while it is face down. Remove and temporarily set aside the screws at the bottom of the console. Carefully remove the bottom of the console enclosure. Locate JW3 and JW4 on the U board in the console. These are near the speaker LS1 at the bottom of the U board. Insert or remove jumpers JW3 and JW4 per the table below for the desired speaker volume. Both jumpers are installed when shipped from the factory. If one or both jumpers is removed to reduce the speaker volume, it is suggested that they be stored in a safe place in case they need to be reinstalled at a later time. Reposition the console bottom and replace the hardware that was removed in step 3.

JW3, JW4

3.6.2

VOLUME

JW3 and JW4 removed

Low

JW3 or JW4 installed

Medium

JW3 and JW4 installed

High

LCD Backlight Brightness adjustment The brightness of the LCD display may be adjusted as desired. To change the LCD brightness, perform the following steps. step 1. 2. 3.

4. 5. 6.

Page 3-16

Action Follow steps 1 to 3 in section 3.6.1. Locate R2 on the U board. Refer to figure 6-2 (Chapter 6). Switch ON the console and observe the LCD display brightness. TAKE ALL APPROPRIATE PRECAUTIONS WITH THE CONSOLE SWITCHED ON. HIGH VOLTAGE IS PRESENT IN THE AREA OF THE LCD BACKLIGHT AND THE LCD BACKLIGHT POWER SUPPLY. Adjust R2 to set the desired LCD brightness. Switch OFF the console. Reposition the console bottom and replace the hardware that was removed in previous steps.

Rev. L


Ch # 740914-03

I Canada Inc. 3.7.0


3

AEC PROGRAMMING AND CALIBRATION This section applies to generators with optional AEC only. This section contains background information relevant to AEC operation. It is strongly suggested that this be read and understood prior to beginning AEC calibration.

3.7.1

3.7.2

AEC Limitations: Minimum and Maximum Exposure Times •

Due to various delays inherent in the AEC chamber and generator electronics, minimum AEC exposure times should be greater than 10 ms.

•

AEC exposures should normally be kept well under one second. When X-ray techniques are used that result in longer exposures, the film density will not be correct due to film reciprocity failure.

•

Care must be exercised when using low kV values with table Buckys because most table tops and grids absorb considerable radiation in the range of 60 - 65 kVp. This will adversely affect AEC operation.

Precalibration Notes Please note the following points before beginning AEC calibration: •

All setup functions per the preceeding sections must be completed before beginning AEC calibration.

•

The generator must be known to be calibrated before beginning AEC calibration.

•

All components (X-ray tubes, collimators, AEC chambers, etc) used during AEC calibration must be those which will be used during procedures, and must be positioned as they will be in actual use of the X-ray room.

•

During AEC calibration, always ensure that the central ray is centered relative to the image receptor.

•

Prior to placing the water absorber, ensure that the collimator is opened sufficiently to cover ALL fields on the AEC pickup device.

•

Ensure that the absorber is positioned such as to fully cover the X-ray field. The absorber must extend a minimum of 3/8″ (10 mm) beyond the X-ray field.

•

The AEC chamber(s) must be calibrated, and the AEC fields must be balanced before proceeding. This should be done per the AEC chamber manufacturers procedure.

•

AEC calibration is performed using the center field only, (left and right fields are not selectable during AEC calibration).

•

A maximum of three separate AEC calibration curves may be established (for three film screen combinations). Each AEC calibration curve has five breakpoints, normally 55 kVp, 65 kVp, 80 kVp, 100 kVp, and 125 kVp. These are the factory defaults referenced in the following steps, but may be changed if required by pressing kVp ↑ or ↓.

•

AEC breakpoint calibration is initially performed for film / screen combination 1, displayed when entering the AEC ADJUSTMENT menu. When this is complete, AEC calibration may be performed for the next film / screen combination. The third and last film / screen combination is calibrated next, if desired.

•

The labels for the three film screen combinations may be set to the site requirements using a laptop computer and the Service Software. In this procedure, the three film screen combinations will be referred to as F/S 1, F/S 2, and F/S 3 (film / screen 1, film / screen 2, and film / screen 3).


Ch # 740914-03

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I Canada Inc.

Navigating the AEC Adjustment menus The first screen displayed within the AEC ADJUSTMENT menu will show breakpoint #1, normally 55 kVp, for F/S 1. Pressing → will scroll through the F/S 1 kVp breakpoints in the sequence 55, 65, 80, 100, and 125 kVp. Pressing → again will change to F/S 2, starting with the 55 kVp breakpoint. Continuing to press → will scroll through the breakpoints for F/S 2. Pressing → again will change to F/S 3, starting with the 55 kVp breakpoint. Continuing to press → will scroll through the breakpoints for F/S 3. Pressing → again starts the above cycle over, pressing ← reverses the above sequence. Pressing GAIN ADJ when requested opens a submenu which allows setting of the AEC gain for F/S 1, F/S 2, and F/S 3.

3.7.4

AEC Calibration (Table Bucky)

CAUTION:

THE PROCEDURES IN THESE SECTIONS REQUIRE X-RAY EXPOSURES. TAKE ALL SAFETY PRECAUTIONS TO PROTECT PERSONNEL FROM X-RADIATION.

The following is an overview of the steps that will be performed in sections 3.7.4 and 3.7.5. •

Set up the equipment in preparation for table bucky AEC calibration, including water phantom absorbers.

•

Set the AEC reference to a mid value at the 80 kVp knee breakpoint for film / screen 1. Adjust the AEC gain to achieve the correct film density.

•

Once the AEC gain is correctly set at the 80 kVp knee breakpoint, set the correct film density at 55 kVp, 65 kVp, 100 kVp, and 125 kVp by adjusting the AEC reference at each of those breakpoints.

•

Repeat the previous two steps for film / screen 2 and film / screen 3, if used, except the density adjustments for all five kVp breakpoints are now made by only adjusting the AEC reference at each of those breakpoints.

•

Repeat the above steps for wall bucky AEC calibration except no generator AEC adjustments are made for wall bucky AEC calibration. The AEC gain setting and AEC reference settings made during table bucky calibration are used for the wall bucky AEC chamber also. The wall bucky AEC chamber gain settings must therefore be set to match the gain of the table bucky AEC chamber. Step 1.

2. 3. 4.

5. 6.

Page 3-18

Action SETUP FOR AEC CALIBRATION Confirm that the table bucky AEC chamber is connected to the correct input on the AEC board per chapter 2. Ensure that the AEC chamber is properly calibrated and the fields are balanced before continuing. Align the tube stand and table Bucky such that the central ray is centered relative to the image receptor. Open up the collimator just enough to expose all fields of the AEC pickup. Ensure that the central ray remains centered relative to the image receptor. Place 15 cm thickness of water between the collimator and the image receptor. The water must be in a flat, X-ray transparent container, sufficiently large to ensure that the X-ray field is fully blocked as noted in 3.7.2. Place the generator into the programming mode. Refer to section 3.3.0. Select AEC ADJUSTMENT from the level 2 utilities. Refer to 3.5.0. Select the table bucky receptor.

Rev. L


Ch # 740914-03

I Canada Inc. 3.7.4


3

AEC Calibration (Table Bucky) Cont Step 7. 8. 9. 10. 11.

12. 13. 14.

15. 16. 17.

18. 19. 20. 21.

22. 23.

24. 25. 26. 27. 28.

Action 80 KVP KNEE BREAKPOINT CALIBRATION Select the 80 kVp knee breakpoint #3 for F/S 1. In each step following, where an exposure is made to the density, set the B/U mAs sufficiently high that the AEC exposure is not terminated by the backup timer. Press UP or DOWN to set the AEC REF to 325 (the range is 0 to 1023). Load a test cassette with fresh film and install it in the image receptor. Use a film / screen combination corresponding to F/S 1. Select GAIN ADJ. Select F/S 1 (note again that F/S 1 is a mnemonic used in this procedure for the first film / screen being calibrated). Set F/S 1 to an initial gain value (n) as per table 3-6 using the GAIN ↑ or ↓ buttons. Table 3-6 shows recommended starting gain values for 100, 400 and 800 speed film / screens. Press the menu button [5] to return to the AEC breakpoint calibration screen. Make an X-ray exposure. Then develop the film and measure the optical density. If the measured O.D. is not within 5% of the desired value, readjust the AEC gain (as per step 11) to increase or decrease the density. Increasing the gain value will decrease the density, decreasing the gain value will increase the density. Load the test cassette in step 10 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. Repeat steps 14 and 15 until the desired O.D. is achieved at the kVp knee breakpoint. Once the desired film density is achieved, record the post mAs, AEC gain adjustment calibration number, AEC reference number, and O.D. in a copy of table 3-7 for the 80 kVp knee breakpoint. 55 KVP BREAKPOINT CALIBRATION Replace the water in step 4 with 10 cm thickness of water. As before, ensure that the absorber fully blocks the X-ray field. Select the 55 kVp breakpoint for F/S 1. Load the test cassette in step 10 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. If the measured O.D. is not within 5% of the desired value, adjust the AEC REF value for the 55 kVp breakpoint. DO NOT READJUST THE GAIN ADJ SETTING. Increasing the AEC REF value will increase the density, decreasing the AEC REF value will decrease the density. Repeat steps 20 and 21 until the desired O.D. is achieved at the 55 kVp breakpoint. Record the post mAs, AEC reference number, and O.D. in a copy of table 3-7 for the 55 kVp breakpoint. 65 KVP BREAKPOINT CALIBRATION Select the 65 kVp breakpoint for F/S 1. Load the test cassette in step 10 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. If the measured O.D. is not within 5% of the desired value, adjust the AEC REF value for the 65 kVp breakpoint. DO NOT READJUST THE GAIN ADJ SETTING. Repeat steps 25 and 26 until the desired O.D. is achieved at the 65 kVp breakpoint. Record the post mAs, AEC reference number, and O.D. in a copy of table 3-7 for the 65 kVp breakpoint.


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I Canada Inc.

AEC Calibration (Table Bucky) Cont Step 29. 30. 31. 32. 33. 34.

35. 36. 37. 38. 39.

Step 40.

41.

Step 42.

43.

Page 3-20

Action 100 KVP BREAKPOINT CALIBRATION Replace the water in step 18 with 20 cm thickness of water. As before, ensure that the absorber fully blocks the X-ray field. Select the 100 kVp breakpoint for F/S 1. Load the test cassette in step 10 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. If the measured O.D. is not within 5% of the desired value, adjust the AEC REF value for the 100 kVp breakpoint. DO NOT READJUST THE GAIN AD SETTING. Repeat steps 31 and 32 until the desired OD is achieved at the 100 kVp breakpoint. Record the post mAs, AEC reference number, and OD in a copy of table 3-7 for the 100 kVp breakpoint. 125 kVp BREAKPOINT CALIBRATION Select the 125 kVp breakpoint for F/S 1. Load the test cassette in step 10 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. If the measured OD is not within 5% of the desired value, adjust the AEC REF value for the 125 kVp breakpoint. DO NOT READJUST THE GAIN ADJ SETTING. Repeat steps 36 and 37 until the desired O.D. is achieved at the 125 kVp breakpoint. Record the post mAs, AEC reference number, and O.D. in a copy of table 3-7 for the 125 kVp breakpoint. Action FILM / SCREEN 2 BREAKPOINT CALIBRATION Perform F/S 2 calibration only if it is intended to use this film / screen combination. If this is NOT being used, ensure that this film / screen combination is not used in any anatomical displays. Repeat steps 7 to 39 as described for film / screen 1 except use a test cassette and film to match F/S 2. Be sure that the correct AEC breakpoints are being calibrated, screens 6-10 in the AEC ADJUSTMENT menus calibrate film / screen 2. These screens are accessed by completing the 125 kVp breakpoint for F/S 1, and pressing → as described earlier. Action FILM / SCREEN 3 BREAKPOINT CALIBRATION Perform F/S 3 calibration only if it is intended to use this film / screen combination. If this is NOT being used, ensure that this film / screen combination is not used in any anatomical displays. Repeat steps 7 to 39 as described for film screen 1 except use a test cassette and film to match F/S 3. Be sure that the correct AEC breakpoints are being calibrated, screens 11-15 in the AEC ADJUSTMENT menus calibrate film / screen 3. These screens are accessed by completing the 125 kVp breakpoint for F/S 2, and pressing → as described earlier.

Rev. L


Ch # 740914-03

I Canada Inc. 3.7.4


3

AEC Calibration (Table Bucky) Cont FILM / SCREEN 100 400 800

INITIAL GAIN ADJ VALUE (n) 150 236 244

Table 3-6: Initial gain value vs film / screen speed The relative AEC voltage gain is expressed by:

Where n ranges from 0 to 254. This means that for low values of n, there is very little slope to the AEC gain curve. Therefore, n needs to change substantially to effect significant gain changes. For high values of n, the AEC gain curve is quite steep, as a result minor changes in n will have a significant effect on AEC gain.


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I Canada Inc.

Table 3-7: Breakpoint Worksheet Record the final results in a copy of the table below. The final results are those obtained AFTER films have been developed to the correct O.D. at each breakpoint. TABLE BUCKY FILM SCREEN 1

SPEED =

#3 BK. POINT = 80 kVp #1 BK. POINT = 55 kV #2 BK. POINT = 65 kV #4 BK. POINT = 100 kV #5 BK. POINT = 125 kV

Post mAs Post mAs Post mAs Post mAs Post mAs

FILM SCREEN 2

SPEED =



FILM SCREEN 3

SPEED =



AEC GAIN ADJ CAL # _______ @ kVp _______ = = = = =

AEC REF NO. = AEC REF NO. = AEC REF NO. = AEC REF NO. = AEC REF NO. =

O.D. = O.D. = O.D. = O.D. = O.D. =



O.D. = O.D. = O.D. = O.D. = O.D. =



O.D. = O.D. = O.D. = O.D. = O.D. =

WALL BUCKY FILM SCREEN 1

SPEED =



FILM SCREEN 2

SPEED =



FILM SCREEN 3

SPEED =



Page 3-22

= = = = =

O.D. = O.D. = O.D. = O.D. = O.D. =

= = = = =

O.D. = O.D. = O.D. = O.D. = O.D. =

= = = = =

O.D. = O.D. = O.D. = O.D. = O.D. =

Rev. L


Ch # 740914-03

I Canada Inc. 3.7.5


3

AEC Calibration (Wall Bucky) The AEC calibration curves that were established in 3.7.4 are used for the wall Bucky as well as the table Bucky. If the calibration on both AEC chambers is similar, the optical density measurements for the wall Bucky should be similar to the table Bucky. If there are significant differences in O.D. between the table Bucky measurements and the wall Bucky measurements under similar conditions, troubleshooting of equipment external to the generator will need to be undertaken. Step 1.

2.

3.

4. 5. 6.

7. 8.

9. 10.

11. 12.

13.

14.

15. 16. 17.

Action SETUP FOR AEC CALIBRATION Confirm that the wall bucky AEC chamber is connected to the correct input on the AEC board per chapter 2. Ensure that the AEC chamber is properly calibrated and the fields are balanced before continuing. Repeat steps 2 to 6 of 3.7.4, EXCEPT align the tube stand and wall Bucky in step 2, and select the wall Bucky receptor in step 6. 80 KVP KNEE BREAKPOINT VERIFICATION Select the 80 kVp knee breakpoint #3 for F/S 1. DO NOT ADJUST THE AEC REF VALUE, USE THE SETTING THAT WAS ESTABLISHED FOR TABLE BUCKY CALIBRATION. Load a test cassette with fresh film and install it in the image receptor. Use a film / screen combination corresponding to F/S 1. Make an X-ray exposure. Then develop the film and measure the optical density. If the measured O.D. is not within 5% of the value previously recorded in table 3-7, adjust the AEC chamber gain per the manufacturers instructions to increase or decrease the density. Repeat steps 5 and 6 until the desired O.D. is achieved at the 80 kVp knee breakpoint. Once the desired film density is achieved, record the post mAs, and O.D. in a copy of table 3-7 for the 80 kVp knee breakpoint. 55 KVP BREAKPOINT CALIBRATION Replace the 15 cm of water with 10 cm thickness of water. As before, ensure that the absorber fully blocks the X-ray field. Select the 55 kVp breakpoint for F/S 1. DO NOT ADJUST THE AEC REF VALUE, USE THE SETTING THAT WAS ESTABLISHED FOR TABLE BUCKY CALIBRATION. Load the test cassette in step 4 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. that the O.D. is within 5 % of the value previously recorded in table 3-7. If this is not so, it indicates that the two AEC chambers are not tracking and troubleshooting must be done at the system level. If the desired O.D. is achieved, record the post mAs, and O.D. in a copy of table 3-7 for the 55 kVp knee breakpoint. 65 KVP BREAKPOINT CALIBRATION Select the 65 kVp breakpoint for F/S 1. DO NOT ADJUST THE AEC REF VALUE, USE THE SETTING THAT WAS ESTABLISHED FOR TABLE BUCKY CALIBRATION. Load the test cassette in step 4 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. that the O.D. is within 5 % of the value previously recorded in table 3-7. If the desired O.D. is achieved, record the post mAs, and O.D. in a copy of table 3-7 for the 65 kVp knee breakpoint.


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I Canada Inc.

AEC Calibration (Wall Bucky) Cont

18. 19.

20. 21. 22

23.

24. 25. 26.

Step 27. 28.

Step 29. 30.

Page 3-24

100 KVP BREAKPOINT CALIBRATION Replace the 10 cm of water with 20 cm thickness of water. As before, ensure that the absorber fully blocks the X-ray field. Select the 100 kVp breakpoint for F/S 1. DO NOT ADJUST THE AEC REF VALUE, USE THE SETTING THAT WAS ESTABLISHED FOR TABLE BUCKY CALIBRATION. Load the test cassette in step 4 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. that the O.D. is within 5 % of the value previously recorded in table 3-7. If the desired O.D. is achieved, record the post mAs, and O.D. in a copy of table 3-7 for the 100 kVp knee breakpoint. 125 KVP BREAKPOINT CALIBRATION Select the 125 kVp breakpoint for F/S 1. DO NOT ADJUST THE AEC REF VALUE, USE THE SETTING THAT WAS ESTABLISHED FOR TABLE BUCKY CALIBRATION. Load the test cassette in step 4 with fresh film and install it in the image receptor. Make an X-ray exposure, then develop the film and measure the optical density. that the O.D. is within 5 % of the value previously recorded in table 3-7. If the desired O.D. is achieved, record the post mAs, and O.D. in a copy of table 3-7 for the 125 kVp knee breakpoint. Action FILM / SCREEN 2 BREAKPOINT CALIBRATION F/S 2 calibration only if it is intended to use this film / screen combination with the wall Bucky. Repeat steps 3 to 26 as described for film / screen 1 except use a test cassette and film to match F/S 2. Be sure that the correct AEC breakpoints are being verified. Action FILM / SCREEN 3 BREAKPOINT CALIBRATION F/S 3 calibration only if it is intended to use this film / screen combination with the wall Bucky. Repeat steps 3 to 26 as described for film screen 1 except use a test cassette and film to match F/S 3. Be sure that the correct AEC breakpoints are being verified.

Rev. L


Ch # 740914-03

I Canada Inc

Acceptance Testing

4

CHAPTER 4 ACCEPTANCE TESTING CONTENTS:

4.1.0 INTRODUCTION ........................................................................................................................................... 4-2 4.2.0 REQUIRED TEST EQUIPMENT FOR GENERATOR VERIFICATION. ....................................................... 4-3 4.3.0 CONSOLE OVERVIEW ................................................................................................................................. 4-3 4.4.0 ACCEPTANCE TESTS (BASIC FUNCTIONS) ............................................................................................. 4-4 4.4.1 Console Functional Tests........................................................................................................................... 4-4 4.4.2 Low Speed Starter Tests............................................................................................................................ 4-6 4.4.3 Generator kVp, mAs Tests ......................................................................................................................... 4-6 4.5.0 AEC VERIFICATION...................................................................................................................................... 4-7 4.6.0 ACCEPTANCE TESTS (REPRODUCIBILITY, LINEARITY AND HVL) ........................................................ 4-8


Ch # 740914-04

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Page 4-1

4

Acceptance Testing

4.1.0

I Canada Inc

INTRODUCTION This section details acceptance testing which verifies that the generator is performing within its limits. It is recommended that this be done after the unit is installed, as prescribed in the maintenance schedule in Chapter 6, or when components are replaced which may affect the calibration or X-ray output. Examples of such components are the X-ray tube, HT tank, power supply control board, filament board, U board, and the AEC board. Calibration procedures will be supplied with replacement parts in those cases where recalibration is necessary after replacement of that assembly. WARNING:

USE EXTREME CARE IN MEASURING HIGH VOLTAGES. ACCIDENTAL MAY CAUSE SERIOUS INJURY OR DEATH. MAINS VOLTAGE WILL BE PRESENT INSIDE THE GENERATOR CABINET, EVEN WITH THE CONSOLE SWITCHED OFF. THIS VOLTAGE IS EXTREMELY DANGEROUS, USE EXTREME CAUTION. THE DC BUS CAPACITORS, LOCATED ON THE DC BUS ASSEMBLY, PRESENT A HAZARD FOR A MINIMUM OF 5 MINUTES AFTER THE GENERATOR HAS BEEN SWITCHED OFF. CHECK THAT THESE CAPACITORS ARE DISCHARGED BEFORE TOUCHING ANY PARTS IN THE GENERATOR.

WARNING:

THE PROCEDURES IN THIS CHAPTER REQUIRE THE PRODUCTION OF X-RAYS. TAKE ALL APPROPRIATE SAFETY PRECAUTIONS TO PROTECT PERSONNEL FROM X-RAY RADIATION.

WARNING:

ALWAYS ENSURE THAT THE EQUIPMENT UNDER TEST AND ALL ASSOCIATED TEST EQUIPMENT IS PROPERLY GROUNDED ENSURE THAT THE HIGH VOLTAGE CABLES ARE INTACT / UNDAMAGED AND PROPERLY CONNECTED BEFORE ATTEMPTING EXPOSURES

ENSURE THAT THE FOLLOWING ITEMS ARE COMPLETED PRIOR TO PERFORMING THE ACCEPTANCE TESTING: •

The tube auto calibration has been done as per Chapter 3 of this manual.

•

The programming has been completed as per Chapter 3.

•

If the installation has AEC; that AEC calibration has been completed as per Chapter 3.

•

Acceptance testing shall only be started after the installation is complete i.e. generator installed as per Chapter 2.

Page 4-2

Rev. E


Ch # 740914-04

I Canada Inc 4.2.0

4.3.0

Acceptance Testing

4

REQUIRED TEST EQUIPMENT FOR GENERATOR VERIFICATION. •

kV measuring device such as a Dynalyzer (or equivalent), or a non-invasive kVp meter.

•

Two channel storage oscilloscope.

•

mA / mAs meter.

•

Radiation meter 0-1000 mR and 1-15 R/min.

•

Lead diaphragm or equivalent to collimate the beam.

•

General purpose DVM.

•

Strobe or reed tachometer.

•

Current probe 0 to 20 amps AC. This is to be used with the oscilloscope to view the stator current waveform.

•

A set of HVL filters (see attached supplement).

•

Calculator.

CONSOLE OVERVIEW Figure 4-1 shows the designations of the membrane switches as referenced in this procedure.

Figure 4-1: Console switch designations


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Acceptance Testing

I Canada Inc

4.4.0

ACCEPTANCE TESTS (BASIC FUNCTIONS)

4.4.1

Console Functional Tests Refer to figure 4-1 for the button designations [1] to [19] Step 1. 2.

3. 4.

5. 6. 7. 8.

9.

10.

11.

12. 13.

14.

Page 4-4

Action Press power ON then power OFF button on the console. Press power ON again to switch unit on.

Result

Check

Generator switches on and off. The PREP and X-RAY LEDS should briefly light.

The green LED adjacent to the power ON switch should light. Press OK and / or RESET, if required, to proceed to the main screen shown in figure 4-2. This may be displayed if an error is present when the generator is powered up. From the main APR menu, press APR button that the available views within that anatomical section are [1]. displayed. Refer to figure 4-2 and 4-3. Press the menu button [5] to return to the main The main menu screen should be displayed. menu. The display should be per steps Repeat steps 4 and 5 for APR buttons [2] to 4 and 5. [4] and [6] to [9]. Select a technique within an anatomical view. The display should be per figure See figure 4-4. 4-4. Change technique parameters (press the ↑ that each of the selected techniques change as and ↓ buttons [10], [11], and [12]). appropriate. Press each of the receptor buttons [13] to [15]. that the desired receptor is selected. Receptors not enabled in programming cannot be selected, refer to RECEPTOR CONF. in Chapter 3. Select the TABLE or WALL bucky. Press AEC that AEC is selected / deselected by pressing this button [16]. button. AEC must be enabled in programming in order to select AEC, refer to RECEPTOR CONF. and CONFIGURATION in Chapter 3. that each field is selected Press each of field select buttons [17], [18], in turn. ION CHAMBER AEC and [19] with AEC enabled. must be selected in order to activate all three fields, refer to CONFIGURATION in Chapter 3. Press the PREP button. The green LED adjacent to the PREP button should light. Press the X-RAY button. The X-RAY warning light adjacent to the X-RAY button should light, Press the power OFF button on the console. Generator switches off.

Rev. E


Ch # 740914-04

I Canada Inc 4.4.1

Acceptance Testing

4

Console Functional Tests (Cont) Depending on generator model, the main menu on your console may show anatomical sections different from those shown below.

CERVICAL THORACIC LUMBAR FULL SPINE

GENERAL LOWER EXTRMTY UPPER EXTRMTY SPECIAL PROC

Figure 4-2: Main console menu

Depending on generator model and selected anatomical section, the anatomical views may differ from those shown below.

CERVICAL AP

FLEX EXT

APOM

NASIUM

LATERAL

VERTEX

OBLIQUE

PILLAR Figure 4-3: Typical anatomical views

The screen shown below is a typical techniques screen in non-AEC mode.

CERVICAL AP

F/S: 200 SID: 40

AVERAGE LG FOCUS

TABLE BUCKY

TIME: 67mS

CM: 24

kVp: 70

m A: 150 mAs: 10.0

Figure 4-4: Typical techniques screen NOTE:

THE SCREENS SHOWN ABOVE ARE EXAMPLES ONLY, ACTUAL SCREENS AND TECHNIQUES MAY VARY IN DETAIL.


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Acceptance Testing

4.4.2

Low Speed Starter Tests Step 1.

2. 3.

4.

4.4.3

I Canada Inc

Action Connect a current probe to the common lead of the X-ray tube stator. Switch ON the console. Press and hold the PREP button. Measure the rotor boost time. Use a strobe or reed tachometer and that the tube reaches operating speed at end of boost. Switch OFF the console.

Result

Check

A 60 Hz waveform dropping to less than half amplitude after prep complete. Should be approximately 1.5 sec.

Speed ≥ 3300 RPM. N/A

Generator kVp, mAs Tests NOTE:

A DYNALYZER IS NOT RECOMMENDED FOR MA MEASUREMENTS WITH THIS X-RAY GENERATOR. BANDWIDTH LIMITATIONS OF THE DYNALYZER WILL RESULT IN INACCURATE MA MEASUREMENTS AT MA VALUES LESS THAN APPROXIMATELY 100 MA. MA MEASUREMENTS SHOULD BE MADE WITH AN MA / MAS METER CONNECTED TO THE MA TEST JACKS ON THE HT TANK. EXPOSURE TIMES MUST BE GREATER THAN 100 MS TO ENSURE ACCURATE MEASUREMENTS.

WARNING :

Step 1.

2.

Page 4-6

TAKE ALL APPROPRIATE PRECAUTIONS WHEN CONNECTING THE MA / MAS METER TO THE HT TANK. ENSURE MAINS POWER IS SWITCHED OFF AND ALL CAPACITORS ARE DISCHARGED BEFORE CONNECTING THE METER. USE THE SAME PRECAUTIONS WHEN DISCONNECTING THE METER. THE MA SHORTING LINK MUST BE IN PLACE ON THE HT TANK AT ALL TIMES EXCEPT WHEN AN APPROVED MA / MAS METER IS CONNECTED.

Action Set up the kVp measuring device to measure kVp as per the manufacturers instructions. Connect the output of the kVp measuring device to channel 1 of the oscilloscope. Set up an mA / mAs meter to measure X-ray tube current by temporarily open-circuiting the mA measuring link E17-E18 on the HT tank. Connect the mA / mAS meter to these terminals, following the device manufacturers instructions. Connect the output of the mA / mAS meter to channel 2 of the oscilloscope.

Rev. E

Result

Check

N/A

N/A


Ch # 740914-04

I Canada Inc 4.4.3

Acceptance Testing

4

Generator kVp, mAs Tests (Cont) NOTE:

TEST EQUIPMENT TOLERANCES MUST BE ALLOWED FOR IN THE MEASUREMENTS IN THE FOLLOWING SECTIONS. LIMITS STATED ARE THE MAXIMUM ALLOWED LIMITS, INCLUDING EQUIPMENT TOLERANCES AND MEASUREMENT ERROR. DISREGARD “CABLE CHARGE” SPIKES AT THE BEGINNING OF THE MA WAVEFORM.

IF HIGH KV EXPOSURES ARE NOT ALLOWED IN THE FOLLOWING STEPS, CHECK THE MAXIMUM KV SETTING THAT HAS BEEN PROGRAMMED. REFER TO “CONFIGURATION” IN CHAPTER 3. Step

3.

4.

5. 6.

Repeat steps 3 and 4 but set the values to kVp = 120, mA = 200, mAs = 20.

7.

Select 75 kVp, 150 mA, large focus. Select the mAs values shown below.

8.

4.5.0

Action Result Check If the following mAs steps are not available, the mAs step size may need to be set, refer to MAS STEP SIZE in Chapter 3. Switch ON the generator and after initialization N/A select the following technique: Select the NON BUCKY receptor [14] Select kVp = 100, mA = 100, mAs = 10. Make an exposure and the following kVp = 100 ± 5.0 kV. results. If calculating mAs from mA and time mAs = 10 ± 1.5 mAs. measurements, then measure time at 75% of the peak kVp waveform. Repeat steps 3 and 4 but set the values to kVp = 65 KV ± 3.25 kV. kVp = 65, mA = 200, mAs = 20. mAs = 20 ± 2.5 mAs. kVp = 120 KV ± 6.0 kV. mAs = 20 ± 2.5 mAs.

A: 1.2 mAs. B: 8.0 mAs. C: 26.0 mAs. D: 63.0 mAs. Select 100 mA, 5 mAs, small focus. Select the kVp values shown below.

A: B: C: D:

1.2 mAs ± 0.62 mAs. 8 mAs ± 1.3 mAs. 26 mAs ± 3.1 mAs. 63 mAs ± 6.8 mAs.

A: B: C: D: E:

A: B: C: D: E:

50 kVp ± 2.5 kV. 60 kVp ± 3 kV. 80 kVp ± 4 kV. 120 kVp ± 4.8 kV. 130 kVp ± 5.2 kV.

50 kVp. 60 kVp. 80 kVp. 120 kVp 130 kVp (150 kV generators only).

AEC VERIFICATION This section applies only to generators with AEC. •

Review Chapter 3: AEC Adjustment.

•

Follow the appropriate steps in Chapter 3 to the AEC calibration.


Ch # 740914-04

Rev. E

Page 4-7

4

Acceptance Testing

4.6.0

I Canada Inc

ACCEPTANCE TESTS (REPRODUCIBILITY, LINEARITY AND HVL) The procedure for performing reproducibility, linearity and HVL testing is contained in a separate document, part number 740917-00 which immediately follows this page.

Page 4-8

Rev. E


Ch # 740914-04

I Canada Inc

Reproducibility, Linearity, & HVL Testing

SUPPLEMENT REPRODUCIBILTY, LINEARITY, & HVL TESTING CONTENTS:

1.0 INTRODUCTION.................................................................................................................................................. 2 2.0 EQUIPMENT SETUP........................................................................................................................................... 3 3.0 REPRODUCIBILITY............................................................................................................................................. 3 4.0 LINEARITY........................................................................................................................................................... 7 5.0 H.V.L. EVALUATION ........................................................................................................................................... 9


740917-00

Rev. A

Page 1

Reproducibility, Linearity, & HVL Testing 1.0

I Canada Inc

INTRODUCTION This supplement describes reproducibility, linearity, and half - value layer (HVL) tests which may be used to performance of medical X-ray generators.

Page 2

NOTE:

THIS SUPPLEMENT DETAILS TYPICAL REPRODUCIBILITY, LINEARITY, AND HVL TESTS. LOCAL REGULATIONS SHOULD ALWAYS BE CONSULTED PRIOR TO PERFORMING THESE TESTS, AS DETAILS MAY VARY IN SOME JURISDICTIONS, OR ADDITIONAL TESTS MAY NEED TO BE PERFORMED.

WARNING:

SOME EXPOSURES IN GENERATOR KVP. THE OPERATION AT THAT SEASONED TO ENSURE PROBLEMATIC.

Rev. A

THIS SECTION MUST BE TAKEN AT THE MAXIMUM X-RAY TUBE MUST BE KNOWN TO BE CAPABLE OF KVP VALUE, AND THE TUBE SHOULD FIRST BE THAT OPERATION AT HIGH KVP VALUES WILL NOT BE


740917-00

I Canada Inc 2.0


EQUIPMENT SETUP 1.

Place the radiation probe above the table approximately 25 cm (10”). Select an SID of approximately 100 cm (40”).

2.

Place a lead diaphragm over the detector and adjust its height so that the X-ray beam covers the detector but does not over radiate the sides of the ‘R’ probe. Refer to figure 1.

Figure 1: mR measurement setup

3.0

REPRODUCIBILITY Calculate reproducibility as follows: 1.

Using kV and mA/ms or mAs values per tables 1 to 4, make a series of 5 exposures.

2.

Record each of the measured mR values in the appropriate table. Refer to step 3 before beginning step 2.

3.

Record the preselected mAs for each series of exposures in the header of each table. For 3 point generators, this is the calculated mAs value where mAs = mA X time in seconds (example for 160 mA and 125 ms, mAs = 160 X 0.125 = 20 mAs).


740917-00

Rev. A

Page 3


I Canada Inc

REPRODUCIBILITY (Cont) 4.

Calculate and record the average dose mR.

5.

Calculate the difference mR - mR for each exposure.

6.

Square each difference from the previous step.

7.

Calculate the sum of the differences squared.

8.

Calculate the standard deviation (S) by using the formula.

9.

Calculate reproducibility by dividing S by mR.

10.

Table 5 shows example reproducibility calculations.

11.

If linearity is to be measured, it is suggested that dose measurements be taken at this time for entry into tables 6 and 7. Refer to 4.0 LINEARITY for details.

IN TABLES 1 TO 4, 3 POINT MEANS THAT FOR GENERATORS WHERE KV, MA, AND TIME SELECTION IS AVAILABLE, THE KV, MA AND MS VALUES SHOWN SHOULD BE USED. FOR GENERATORS WHERE 2 POINT OPERATION ONLY IS AVAILABLE, THE KV AND MAS VALUES SHOWN SHOULD BE USED. 3 point = Minimum kV, maximum mA, 100 ms. 2 point = Minimum kV, maximum mAs. EXP No.

DOSE (mR)

mAs = __________ DIFFERENCE2

DIFFERENCE

1 2 3 4 5 mR = ________

Calculate each of the differences ie: DIFF1 = mR1 - mR. Repeat for each remaining mR value.

Square each difference. Then calculate the sum of the difference2. Sum of difference2 = _________

Calculate standard deviation (S) using formula at beginning of this section: Calculate reproducibility =

S = __________

S = _________ (not to exceed 0.045) mR Table 1: Reproducibility

Page 4

Rev. A


740917-00

I Canada Inc 3.0


REPRODUCIBILITY (Cont) 3 point = Maximum kV, minimum mA, 100 ms. 2 point = Maximum kV, minimum mAs. EXP No.

DOSE (mR)


DIFFERENCE

1 2 3 4 5 mR = ________




S = __________


3 point = 50% of maximum kV, 250 ms, mA to give 100 - 500 µR (1 - 5 µGy) dose. 2 point = 50% of maximum kV, mAs to give 100 - 500 µR (1 - 5 µGy) dose. EXP No.

DOSE (mR)


DIFFERENCE

1 2 3 4 5 mR = ________




S = __________



740917-00

Rev. A

Page 5


I Canada Inc

REPRODUCIBILITY (Cont) 3 point = 80% of maximum kV, 250 ms, mA to give 100 - 500 µR (1 - 5 µGy) dose. 2 point = 80% of maximum kV, mAs to give 100 - 500 µR (1 - 5 µGy) dose. EXP No.

DOSE (mR)

MAS = __________ DIFFERENCE2

DIFFERENCE

1 2 3 4 5 mR = ________




S = __________


EXAMPLE

mAs = _20_

EXP No.

DOSE (mR)

DIFFERENCE

DIFFERENCE2

1

249.0

4.4

19.36

2

245.0

0.4

0.16

3

244.0

0.6

0.36

4

242.0

2.6

6.76

5

243.0

1.6

2.56


mR = _244.6_

Square each difference. Then calculate the sum of the difference2. Sum of difference2 = _29.2_

Calculate standard deviation (s) using formula at beginning of this section: Calculate reproducibility =

S = _2.70_

S = _0.011_ (not to exceed 0.045) mR Table 5: Reproducibility

Page 6

Rev. A


740917-00

I Canada Inc 4.0


LINEARITY 1.

Record two additional series of dose measurements for entry into tables 6 and 7: • For table 6, use settings per table 3 EXCEPT use an mA (or mAs) value adjacent to the mA (or mAs) setting used in table 3. • For table 7, use settings per table 4 EXCEPT use an mA (or mAs) value adjacent to the mA (or mAs) setting used in table 4. • Record the mAs in the header of tables 6 and 7 as per 3.0 step 3.

1.

Calculate and record the average dose mR for table 6 and 7.

2.

Record the preselected mAs and the average dose values taken from tables 3 and 4, and from tables 6 and 7, at the top of the next page.

3.

Using the appropriate mAs and mR values, calculate X3, X4, X6, and X7 in tables 8 and 9.

4.

Calculate the coefficient of linearity, L, as per tables 8 and 9.

mAs = __________ EXP No.

DOSE (mR)

1 2 3 4 5 mR = ________ Table 6: Linearity

mAs = __________ EXP No.

DOSE (mR)

1 2 3 4 5 mR = ________ Table 7: Linearity


740917-00

Rev. A

Page 7


I Canada Inc

LINEARITY (Cont) Record the mAs and mR values taken from tables 3, 4, 6, and 7 below. Table 3

mAs3 = _____

mR3 = _____

Table 4

mAs4 = _____

mR4 = _____

Table 6

mAs6 = _____

mR6 = _____

Table 7

mAs7 = _____

mR7 = _____

mR3 X3 =

= ________ mAs3 mR6

X6 =

= ________ mAs6 X3 - X6

L =

= ________ (not to exceed 0.095) X3 + X6

In the numerator of the above equation, use the absolute value of X3 - X6 (disregard the minus sign). Table 8: Linearity

mR4 X4 =

= ________ mAs4 mR7

X7 =

= ________ mAs7 X4 - X7

L =

= ________ (not to exceed 0.095) X4 + X7

In the numerator of the above equation, use the absolute value of X4 - X7 (disregard the minus sign). Table 9: Linearity

Page 8

Rev. A


740917-00

I Canada Inc 5.0


H.V.L. EVALUATION 1.

Be sure the X-ray source assembly (X-ray tube and beam limiting device) is fully assembled and functional.

2.

Use the test setup as per figure 1.

3.

Set the generator as follows: 3 point generators, 80 kV, 200 mA, 50 ms, large focus. For 2 point generators use 80 kV, 200 mA if this can be set, and 10 mAs.

4.

Take a series of three exposures and record the mR values in table 10. Calculate and record the average of the three exposures.

5.

Place 2 mm of Al on top of the lead diaphragm (total of 2 mm added), repeat the exposure and record the mR value in table 10.

6.

Place an additional 1 mm of Al on top of the lead diaphragm (total of 3 mm added), repeat the exposure; and record the mR value in table 10.

7.

Place an additional 3 mm of Al on top of the lead diaphragm (total of 6 mm added), repeat the exposure; and record the mR value in table 10.

8.

The relative transmission for the average of the three mR values where no Al was added is assigned a value of 1.00. Using that base, assign relative transmission values to the remaining mR values. For example, if the average mR value was 247 and has a relative transmission factor of 1.00, then 162 mR will have a relative transmission of 162 / 247 = 0.66.

9.

Plot the relative transmission values in figure 1. This should produce a straight line on the graph since the X-axis is logarithmic.

10.

Interpolate to determine the HVL. The Al thickness at a relative transmission of 0.5 will be the required HVL value.

11.

Repeat steps 4 to 10: 3 point generators, 100 kV, 200 mA, 50 ms, large focus. For 2 point generators use 100 kV, 200 mA if this can be set, and 10 mAs. Use table 11 to record the values and figure 2 to plot the results

12.

Table 12 and figure 3 show example HVL determination.


740917-00

Rev. A

Page 9


I Canada Inc

H.V.L. EVALUATION (Cont) ADDED ALUMINUM FILTER

DOSE (mR)

RELATIVE TRANSMISSION

0 0 0 0 (Average of three readings)

1.00

2 1 3 Table 10: HVL dose values 80 kVp

Figure 1: HVL plot 80 kVp For 80 kVp, the HVL must be ≥ 2.3 mm Al.

Page 10

Rev. A


740917-00

I Canada Inc 5.0



DOSE (mR)


0 0 0 0 (Average of three readings)

1.00

2 1 3 Table 11: HVL dose values 100 kVp

Figure 2: HVL plot 100 kVp For 100 kVp, the HVL must be ≥ 2.7 mm Al.


740917-00

Rev. A

Page 11


I Canada Inc


DOSE (mR)


0

249

0

244

0

247

0 (Average of above three readings)

247

1.00

2

162

.66

1

131

.53

3

70

.28

Table 12: HVL dose values (example)

Figure 3: HVL plot (example) By interpolating the thickness of Al at a relative transmission value of 0.5, it can be seen that the HVL is approximately 3.3.

Page 12

Rev. A


740917-00

I Canada Inc

Troubleshooting

5

CHAPTER 5 TROUBLESHOOTING CONTENTS:

SECTION TITLE 5.1.0 INTRODUCTION ....................................................................................................................................................5-2 5.2.0 STATUS AND ERROR CODES.............................................................................................................................5-2 5.2.1 Start-Up Messages .............................................................................................................................................5-2 5.2.2 Status Messages ................................................................................................................................................5-3 5.2.3 Limit Messages ...................................................................................................................................................5-3 5.2.4 Error Messages ..................................................................................................................................................5-4 5.3.0 STATUS LED’S ......................................................................................................................................................5-8 5.4.0 MISCELLANEOUS FAULTS ................................................................................................................................5-10 5.4.1 Console Failure to Start ....................................................................................................................................5-10

X-Ray Generator Service Manual Ch # 740914-05

Rev. H

Page 5-1

5

Troubleshooting

5.1.0

I Canada Inc

INTRODUCTION The X-ray generator console will display status messages on the LCD display during normal and abnormal operation of the generator. This Chapter contains tables of those messages and suggests actions to be taken by service personnel to correct any malfunctions that may occur.

5.2.0

STATUS AND ERROR CODES

5.2.1

Start-Up Messages These messages are displayed at initial power-on only, and indicate the status at the time that the generator is switched on. MESSAGE AEC MEMORY O.K. / ERR APR MEMORY: O.K. / ERR CAL MEMORY: O.K. / ERR HEAT SWITCH OPEN, TUBE MAY BE HOT LF DISABLED LF UNCAL MEMORY TEST: O.K. / ERR PROGRAM DATA: O.K. / ERR RELEASE EXP. SW. RT CLOCK: O.K. / ERR SOFTWARE REV SF DISABLED SF UNCAL STAMP ERROR: XX

TUBE CALIBRATED TUBE DATA: O.K. / ERR

TUBE DISABLED. ENTER UTILITY TO ENABLE.

Page 5-2

DESCRIPTION Indicates that the AEC data checksums match. ERR indicates that the AEC calibration data must be recreated by ing via a laptop computer, or redoing the AEC adjustment procedure as per Chapter 3. O.K. indicates that the APR memory checksums match. ERR indicates an APR error. The APR data set should be recreated by ing via a laptop computer, or changing any of the APR data and exiting. O.K. indicates that the tube auto-calibration data checksums match. ERR indicates an auto cal error. The tube will need to be recalibrated. Indicates that the tube thermal switch is open or not connected.

Large focus has been disabled in programming. The large focus is not calibrated, run the CALIBRATION routine. O.K. indicates that the EPROM data checksums match. ERR indicates that the EPROM may be defective and should be replaced. Indicates that the mAs steps & error message checksums match. ERR indicates that the mAs step or error message checksums don’t match. This suggests that the software needs to be replaced. Indicates that the exposure switch is closed while the generator is being poweredup. O.K. indicates that the time is being incremented by the RT clock. ERR indicates that the battery voltage may be low, or the clock may need setting as per Chapter 3. Displays the software revision in the console. Small focus has been disabled in programming. The small focus is not calibrated, run the CALIBRATION routine. Indicates that there was insufficient time to save the time stamp information before power was lost, or that the lithium battery on the U board is low. If this message appears check the battery on the U board, or set the clock as per Chapter 3. Both focal spots are calibrated. O.K. indicates that the tube insert data checksums match. ERR indicates a tube data error. The tube data must be recreated by ing via a laptop computer, or possibly the EEPROM is defective and needs to be replaced. Both focal spots have been disabled in programming.

Rev. H


Ch # 740914-05

I Canada Inc

5.2.2

Troubleshooting

5

Status Messages These messages indicate the status of the generator. MESSAGE PREPARATION READY X-RAY EXPOSURE

5.2.3

DESCRIPTION Indicates that PREP has been requested. Indicates that the generator is ready to make an exposure. Indicates that an X-ray exposure is in progress.

Limit Messages These messages indicate that an exposure has been requested that exceeds one or more limits. MESSAGE DENSITY LIMIT DUTY CYCLE LIMIT FOCUS CHANGED INVALID SETTING KVP LIMIT LF MAS LIMIT

MAS LIMIT MAX MAS LIMIT POWER KV LIMIT POWER MAS LIMIT SF MAS LIMIT TUBE KW LIMIT CALC. AEC RAMP LIMIT LOW RAMP LIMIT

PROBLEM The generator upper or lower density limit has been reached. Requested exposure not allowed until the duty cycle limit expires. Indicates that the focus has automatically changed while increasing or decreasing the mAs. Requested setting is invalid, ie attempting to deselect all AEC fields in AEC mode. The generator kVp limit has been reached. The generator large focus mAs limit has been reached.

The generator mAs limit has been reached. The generator power limit has been reached. Displayed if kV ↑ is pressed when the generator has reached its power limit. Displayed if mAs ↑ is pressed when the generator has reached its power limit. The generator small focus mAs limit has been reached. Displayed if requested parameter change will violate the tube data. Requested density correction will require a ramp voltage > 15.0V from AEC device. Requested density correction will require a ramp voltage below noise threshold of AEC device (≅ 50mV)


Rev. H

ACTION None required. Wait for time limit to expire. None required. Correct the setting. None required. Switch to small focus for mAs values < 1.0 mAS. None required. None required. Reduce mAs if higher kVp is required. Reduce mAs. Reduce mAs on small focus. None required. Increase KVp and decrease density correction. Decrease KVp and increase density correction.

Page 5-3

5

Troubleshooting

5.2.4

I Canada Inc

Error Messages These messages indicate that an error has occurred. MESSAGE APR MEMORY:ERR.

PROBLEM APR data has been corrupted.

40 INCH ITLK

Indicates that the 40 ″ S.I.D. has been selected, but the tube stand is not in the 40 ″ S.I.D. position.

72 INCH ITLK

Indicates that the 72 ″ S.I.D. has been selected, but the tube stand is not in the 72 ″ S.I.D. position.

AEC INTERLOCK

Indicates that no AEC device is connected.

BACKUP MAS

The AEC backup mAs timer, and not the AEC circuits, terminated the AEC exposure.

BACKUP TIMER

The generator backup timer terminated the exposure at the limit of 6000 ms for non AEC exposures, or the BUmAS limit for AEC exposures.

DEVICE INTERRUPT DOOR INTERLOCK

Indicates that the selected bucky is not ready. Indicates that the room door is open.

FAULTY EXP. SW.

Indicates that the exposure switch is closed during power-up. This message is displayed if the switch is not opened immediately after the RELEASE EXP. SW. message in 5.2.1. is displayed. Indicates that filament current < 2.5 amps detected.

FILAMENT FAULT

Page 5-4

FOCUS DISABLED

Indicates that the requested focal spot has been deprogrammed.

HEAT SW. ITR.

Indicates that the thermal switch has opened during an exposure.

Rev. H

ACTION Reload the APR via the utilty software. 1. Check S.I.D. on tube stand. 2. Check the 25 pin console cable. 1. Check S.I.D. on tube stand. 2. Check the 25 pin console cable. Connect AEC device or deprogram the AEC option. 1. Check the BUmAs setting, as described on page 5-5. 2. Check the AEC chamber, wiring, and AEC board. Increase the mA for non AEC exposures, or increase the BUmAs for AEC exposures. Check the Bucky(s). Check the door interlock. Check and replace the exposure switch if necessary. 1. Check for open filament in X-ray tube. 2. Check for poor connections in the cathode HT cable. 3. Check the filament supply board. Select the other focal spot, or enable the selected focal spot in programming mode. Allow the X-ray tube to cool.


Ch # 740914-05

I Canada Inc

5.2.4

Troubleshooting

5

Error Messages (Cont) MESSAGE kV HIGH

PROBLEM Indicates measured kV is high by > 15 %.

1.

2.

3. kV LOW

Indicates measured kV is low by >15 %.

1.

2.

3.

4. LOW / NO AEC RAMP

A low (or no) AEC ramp has been detected from the AEC chamber during the first 50 ms of AEC exposure.

1.

2.

mA HIGH

Indicates measured mA is high by > 20 %.

1. 2.

3.

4.

ACTION Check power supply control board and/or HT tank. Re-auto calibrate (per CALIBRATION in Chapter 3). * Consult product . Check that the mains voltage is appropriate for the selected output power. Check power supply control board and/or HT tank. Re-auto calibrate (per CALIBRATION in Chapter 3). * Consult product . Check settings (techniques, receptor selection, etc, and mA / mAs settings. Refer to the note at the bottom of this page). Check AEC chamber, conections, wiring etc. Check for tube arcing. Check power supply control board and/or HT tank. Re-auto calibrate (per CALIBRATION in Chapter 3). * Consult product .

NOTE: AEC backup mAs = mAs as set in non-AEC mode X 2 (i.e. @ 10 mAs, AEC backup mAs = 20 mAs). AEC backup time = AEC backup mAs ÷ mA (i.e. 100 mAs ÷ 50 mA = 2 seconds AEC backup time). The “Low / No AEC Ramp” fault limit varies depending on the AEC backup time. Reducing the AEC backup time increases the AEC fault reference voltage. Therefore, for short AEC backup times a larger AEC voltage ramp is require than for long AEC backup times. The formula below illustrates the relationship between AEC backup time and the minimum AEC voltage ramp that must be present at 50


Rev. H

Page 5-5

5

Troubleshooting

5.2.4

I Canada Inc

Error Messages (Cont)

ms after the start of an AEC exposure.

Vramp (Min) =

[(

0.050 X Vref AEC Backup Time

)

0.9

]

Vref varies from 0 to 5 V, depending on the technique. It can be seen that increasing the AEC backup time decreases the minimum required AEC voltage ramp.

Page 5-6

MESSAGE mA LOW

PROBLEM Indicates measured mA is low by > 20 %.

MANUAL INTERRUPT

The X-ray exposure switch was released before the exposure was finished.

POWER UP FAILURE, CHECK LINE VOLT.

Indicates that the generator did not power up within 30 seconds of the console being switched on.

P/S FAULT

Indicates that the generator is not ready to make an exposure.

Rev. H

ACTION 1. Check mains voltage. 2. Check power supply control board and/or HT tank. 3. Re-auto calibrate (per CALIBRATION in Chapter 3). * 4. Consult product . Hold the exposure switch until the exposure is finished. 1. Check that the mains voltage is not outside the low line specification. 2. Check the 37 conductor console cable. 3. Check the DC bus voltage. The DC bus capacitors may not be charging. 4. Check that the main or on the power input board is closed. 1. Check D1 on the auxiliary board. If this is lit, the + or 12 VDC rails may be low. Check the +/- 12 V supplies on the auxiliary board. 2. Check PREP and kV ENABLE signals on the power supply control board. 3. Consult product .


Ch # 740914-05

I Canada Inc

5.2.4

Troubleshooting

5

Error Messages (Cont)

*

MESSAGE P/S NOT READY

PROBLEM Indicates that the main line or in the generator is not commanded to close. A DC bus fault may be preventing the DC bus capacitors from charging, in which case the or closure will be inhibited.

ROTOR FAILURE, TURN UNIT OFF

Indicates that the rotor is running at any time other than during prep or during an exposure.

ROTOR FAULT

Indicates that the low speed starter board has not sensed adequate stator current.

TUBE DISABLED

Both focal spots are disabled.

TUBE FAULT

Indicates a fault has been detected in the kV or mA output, or in the inverter circuits.

UNCOMMANDED KV

Indicates that kV has been detected when no kV has been requested.

ACTION Check D1 on the auxiliary board. If this is lit, the or will not close. Check the DC bus assembly and the soft start circuit on the power input board if this is the case. Check rotor board or auxiliary board. 1. Check the X-ray tube stator wiring. 2. Check the rotor board. Enable one or both focal spots. Check if D69, D70, D71, D72, or D82 on the power supply control board are lit. If any of the above LED’s are lit, refer to the note at the end of this table for a description of the function of these LED’s. Switch generator OFF. Prevent further use of generator until problem is fixed.

The generator purges the existing X-ray tube auto calibration data before starting the auto calibration routine and saving new calibration data. Therefore, auto calibration should be a last resort during general troubleshooting, and should only be done to recalibrate the tube. For example, if a low mA fault is presented, you should ensure that the generator is fully functional, and actually needs recalibration. If calibration is attempted on a partially functional generator, the auto calibration routine may be aborted before any calibration is done, and the generator will inhibit further exposures until the selected mA is calibrated for the selected kV.


Rev. H

Page 5-7

5

Troubleshooting

5.2.4

I Canada Inc

Error Messages (Cont) NOTE RE TUBE FAULT ERROR: As briefly described in the preceeding table, LED’s D69, D70, D71, D72, or D82 on the power supply control board indicate the type of fault that caused the stated error. •

D69 indicates high kVp ≥ 130 kVp for 125 kV generators, ≥ 160 kVp for 150 kV generators. If this is lit, consult product .

•

D70 indicates that inverter (primary) current exceeded preset limits. If this is lit, consult product .

•

D71 indicates cathode current exceeded preset limits, usually due to an arc. If this is lit, check the X-ray tube. The X-ray tube may be damaged or simply require seasoning. Refer to Chapter 6 for TUBE CONDITIONING / SEASONING. If this does not solve the problem, check the HT cables and HT connections. Consult product if the previous steps fail to resolve the problem.

•

D72 indicates anode current exceeded preset limits, usually due to an arc. Follow the recommendations for D71. D82 indicates an inverter fault. If this is lit, consult product .

•

5.3.0

STATUS LED’S The following list describes the normal states and the functions of the status and diagnostic LED’s on the circuit boards in the generator. Power Input Board (1 phase) LED D2

NORMAL STATE Lit

D9

Lit

Power Input Board (3 phase) LED NORMAL STATE DS1 Lit

Page 5-8

DS2

Lit

DS4 DS6

Lit Lit

DS7

Lit

FUNCTION Indicates that the DC bus voltage is sufficient to energize the main line or. Indicates that +12 VDC is present on the power input board. This LED does NOT indicate that the +12 VDC rail is within normal limits.

FUNCTION Indicates that the DC bus capacitors are charged. The DC bus must be charged before the main line or K5 can close. Indicates that +12 VDC is present on the power input board. This LED does NOT indicate that the +12 V rail is within normal limits. Indicates that the main or (K5) is closed. Indicates that K2 on the power input board is energized. This relay supplies AC mains power to the primary of the room interface transformer. Indicates that K1 on the power input board is energized. This is the soft-start relay, and is normally energized when the generator is switched on. K1 will open if a DC bus fault is detected.

Rev. H


Ch # 740914-05

I Canada Inc

5.3.0

Troubleshooting

5

STATUS LED’s (Cont) Auxiliary Board D1

LED

NORMAL STATE Off

D2 D3

Lit Lit

D29

Lit

D30

Lit

D31

Lit

FUNCTION Indicates that the + or - 12 VDC rails are low, or that a DC bus (soft start) fault is present. See D2 under power input board. Indicates that the logic is OK for the main line or to close. Indicates that the power input board logic is OK to allow the main line or to close. Indicates that the +12 VDC supply on the auxiliary board is present. This LED does NOT indicate that the +12 VDC rail is within normal limits. Indicates that the -12 VDC supply on the auxiliary board is present. This LED does NOT indicate that the -12 VDC rail is within normal limits. Indicates that the + and - 35 VDC supplies on the auxiliary board are present. This LED does NOT indicate that the these supplies are within normal limits.

Control Board LED D69 D70 D71 D72 D82

NORMAL STATE Off Off Off Off Off

FUNCTION Refer to “NOTE RE TUBE FAULT ERROR” at end of 5.2.4. Refer to “NOTE RE TUBE FAULT ERROR” at end of 5.2.4. Refer to “NOTE RE TUBE FAULT ERROR” at end of 5.2.4. Refer to “NOTE RE TUBE FAULT ERROR” at end of 5.2.4. Refer to “NOTE RE TUBE FAULT ERROR” at end of 5.2.4.

Customer Interface Board LED DS1

NORMAL STATE Lit

FUNCTION Indicates the presence of +24 VDC on this board.

NORMAL STATE Lit

FUNCTION Indicates the presence of +24 VDC on this board.

U Board LED DS7


Rev. H

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Troubleshooting

I Canada Inc

5.4.0

MISCELLANEOUS FAULTS

5.4.1

Console Failure to Start SYMPTOM:

LCD display on console lights up when console switched ON, but start up diagnostics, etc do not display.

SOLUTION:

Check battery B1 on U board. The console will not start executing the firmware code if the battery is missing, or if the battery voltage is very low ≤ 1 V.

Page 5-10

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Regular Maintenance

6

CHAPTER 6 REGULAR MAINTENANCE CONTENTS:

Section Title 6.1.0 INTRODUCTION.................................................................................................................................................... 6-2 6.2.0 SERVICE RECORD............................................................................................................................................... 6-3 6.3.0 MAINTENANCE SCHEDULE ................................................................................................................................ 6-4 6.4.0 OIL FILL / LEVEL CHECK ..................................................................................................................................... 6-4 6.5.0 CLEANING ............................................................................................................................................................. 6-6 6.6.0 EPROM / EEPROM REPLACEMENT ................................................................................................................... 6-6 6.7.0 BATTERY REPLACEMENT................................................................................................................................... 6-6 6.8.0 TUBE CONDITIONING / SEASONING ................................................................................................................. 6-8 6.9.0 AEC / CAEC BOARD INSTALLATION OR REPLACEMENT................................................................................ 6-9


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Regular Maintenance

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I Canada Inc

INTRODUCTION This Chapter provides a recommended schedule for periodic maintenance of the X-ray generator. Instructions are also included for installing an AEC / CAEC board in generators which originally did not have the AEC option installed, and for installing an AEC / CAEC board to CAEC (where available). The initial installation date and location, and all service performed on the generator, should be recorded in table 6-1. The record should be as thorough as possible, detailing the scope and type of work that was performed (all service and a record of all replacement parts that were installed). Additionally, the person performing the work should date and sign the record. This information will be invaluable in the future for traceability and to ensure continued compatibility of the generator. If a major component (such as the HT oil tank or a major circuit board) is replaced, recalibration will be needed. A separate procedure will be included with the spare in those cases, detailing the required calibration procedure. The acceptance test procedure per Chapter 4 should then be performed prior to placing the generator back into service. WARNING:

MAINTENANCE IS TO BE PERFORMED ONLY BY COMPETENT, TRAINED PERSONNEL WHO ARE FAMILIAR WITH THE POTENTIAL HAZARDS ASSOCIATED WITH THIS EQUIPMENT.

NOTE:

MAINTENANCE SCHEDULE FREQUENCY MAY BE DICTATED BY CERTAIN REGULATORY REQUIREMENTS OF THE COUNTRY OR STATE IN WHICH THE INSTALLATION IS LOCATED. ALWAYS CHECK THE LOCAL CODES AND REGULATIONS WHEN SETTING THE MAINTENANCE SCHEDULE.

WARNING:

ALWAYS SWITCH OFF MAINS POWER TO THE GENERATOR AND WAIT A MINIMUM OF 5 MINUTES FOR CAPACITORS TO DISCHARGE BEFORE BEGINNING ANY PREVENTATIVE MAINTENANCE, INCLUDING CLEANING.

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Regular Maintenance

6

SERVICE RECORD

INSTALLED BY: __________________ DATE: ______________ LOCATION: _________________________ Service Date

Description of Service

Performed By

Table 6-1: Installation and service record


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MAINTENANCE SCHEDULE Maintenance

Description of Preventative Maintenance

Frequency Every 6 Months AND whenever a related certifiable X-ray component is replaced:

Every 12 months:

Every 5 years:

6.4.0

1.

Clean and re-grease all HV connections using vapor proof compound.

2.

Check that all HV connections are tight.

3.

Clean the control console, and main cabinet as needed. REFER TO 6.5.0 CLEANING BEFORE PROCEEDING.

4.

Perform the X-ray tube auto calibration routine, refer to Chapter 3.

5.

the calibration of the generator, refer to Chapter 4.

6.

Test the X-ray tube thermal switch circuits in the generator. Disconnect the tube thermal switch and the correct error message, and that X-ray exposures are inhibited.

7.

Perform any additional tests required by laws governing this installation.

1.

Examine the following for any visible damage and replace any damaged components: •

The exterior of the control console, including the membrane switch assembly.

•

The cables between the control console and the generator main cabinet.

•

The cable(s) between the control console and the AEC chambers (if the AEC option is used).

•

The handswitch (if used) and the cables connecting this to the console.

•

The HT cables.

2.

Open the generator main cabinet and examine the unit for any visible damage: missing or loose ground connections, oil leaks, damaged cables etc.

3.

Ensure that there are no obstructions blocking any of the ventilation holes or louvers on the generator cabinet.

Replace the lithium battery on the U board in the control console. Refer to the spares list in Chapter 8 for the required part number. Refer to 6.7.0 for the battery replacement procedure.

OIL FILL / LEVEL CHECK The insulating oil level in the HT transformer does NOT require periodic checking under normal conditions. However, if there is evidence of possible oil loss, the procedure for checking the correct oil level follows. 1.

Loosen the oil fill plug screw on the tank lid.

2.

With the screw sufficiently loosened, remove the rubber (neoprene) plug.

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Regular Maintenance

6

OIL FILL/LEVEL CHECK (Cont) 3.

4.

5.

Use a clean ruler, strip of cardboard, or other equivalent material to determine the oil level -measured always from the TOP surface of the HT tank’s lid. • Normally the oil level should be between 0.88 - 1.25 inches (22 - 32 mm) from the top of the tank lid. •

If the oil level is between 1.25 - 1.6 inches (32 - 41 mm) from the top of the tank lid, then clean oil should be added as needed.

•

If the oil level is greater than 1.6 inches (41 mm) below the top of the tank lid, please consult the factory.

Use only fresh oil, type Shell DIALA AX or equivalent. It is critical that air is not added when topping up the oil. The following procedure is strongly recommended when adding oil. • Use a new clean syringe to remove oil from the container. A 60 cc catheter tip syringe is recommended. Approximately 60 cc of oil is required to raise the oil level by one millimeter. •

Turn the syringe upright and expel any trapped air.

•

Place the tip of the syringe through the oil-fill plug and into the oil, ensuring that it is below the surface of the oil.

•

Gently eject the oil from the syringe into the HT tank, while making sure that the tip of the syringe remains below the surface of the oil until all of the oil is emptied from the syringe.

•

Repeat the previous steps until the required amount of oil has been added.

Replace the oil fill plug and tighten the screw when finished. Do NOT over tighten the screw. This should be tightened until the neoprene plug is no longer able to be turned by hand, then tighten the screw another 1 to 1 1/2 turns. Wipe up any oil spills. Dispose of soiled absorber in compliance with government requirements, and ensure conformity to local disposal regulations.

Figure 6-1: HT tank oil fill


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Regular Maintenance

6.5.0

6.6.0

CLEANING •

Never use anything other than mild soap and water to clean plastic surfaces. Other cleaners may damage the plastic.

•

Never use any corrosive, solvent or abrasive detergents or polishes.

•

Ensure that no water or other liquid can enter any equipment. This precaution prevents short circuits and corrosion forming on components.

•

Methods of disinfection used must conform to legal regulations and guidelines regarding disinfection and explosion protection.

•

If disinfectants are used which form explosive mixtures of gases, these gases must have dissipated before switching on the equipment again.

•

Disinfection by spraying is not recommended because the disinfectant may enter the X-ray equipment.

•

If room disinfection is done with an atomizer, it is recommended that the equipment be switched OFF, allowed to cool down and covered with a plastic sheet. When the disinfectant mist has subsided, the plastic sheet may be removed and the equipment be disinfected by wiping.

EPROM / EEPROM REPLACEMENT WARNING:

6.7.0

I Canada Inc

PLEASE TAKE APPROPRIATE ELECTROSTATIC PRECAUTIONS AT ALL TIMES WHEN HANDLING THE EPROM OR EEPROM.

1.

Switch the generator OFF at the console and disconnect the mains voltage.

2.

Turn the console on its face. A soft, clean cloth should be placed on the work surface to protect the console from damage while it is face down.

3.

Remove and temporarily set aside the screws at the bottom of the console. Carefully remove the bottom of the console enclosure.

4.

Locate and carefully remove the existing EPROM and / or EEPROM on the U board (U7 for the EPROM, U6 for the EEPROM, refer to figure 6-2).

5.

Carefully insert the replacement EPROM and / or EEPROM into the socket observing the orientation per figure 6-2.

6.

Reposition the console bottom and replace the hardware that was removed in step 3.

BATTERY REPLACEMENT 1.

Refer to 6.6.0 for console disassembly instructions to access the U board. Refer to figure 6-2 for the battery location.

2.

Remove the battery from the holder by gently prying under the battery at the access slot in the battery holder using a small screwdriver. Slide the battery over the edge of the holder and remove it when it is free.

3.

Check the voltage of the new battery prior to inserting it. This should be nominally 3.2V, do not use if it is under 2.90 V.

4.

Wipe the replacement battery with a clean cloth, and ensure that the holder is clean before inserting the new battery.

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Regular Maintenance

6

BATTERY REPLACEMENT (cont) 5.

Gently lift the spring on the holder and insert the replacement battery positive (+) side up

6.

A stamp error message may be observed at initial turn-on after replacing the battery. This is normal at this point and will be cleared by setting the date and time in step 8.

7.

Reassemble the console as per 6.6.0.

8.

Reset the date and time; refer to Chapter 3 for the procedure to do this.

Figure 6-2: EPROM and battery location


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I Canada Inc

TUBE CONDITIONING / SEASONING Tube conditioning or “seasoning” is particularly important for new X-ray tubes or tubes that have not been used for several days. This should be performed before attempting auto calibration, as an unseasoned tube may not operate properly at higher kV values without arcing. Always refer to the X-ray tube manufacturers seasoning procedure, if available. If the X-ray tube manufacturers instructions are not available, the following procedure may be used: IF DEVIATING FROM THE PROCEDURE BELOW, IT MUST BE UNDERSTOOD THAT THE GENERATOR WILL NOT ALLOW EXPOSURES AT KV VALUES HIGHER THAN HAS BEEN AUTO CALIBRATED. FOR EXAMPLE, IF AUTO CALIBRATION HAS ONLY BEEN DONE AT 40 AND 70 KV, THEN EXPOSURES ABOVE 70 KV ARE NOT ALLOWED. TUBE AUTO CALIBRATION IS DONE AT 40 kV, 70 KV, 100 KV, AND 125 KV. THE HIGHER KV VALUES WILL NOT BE CALIBRATED IF LIMITED BY THE “KV MAX” SETTING IN THE UTILITY MENU. 1.

In the level 2 utilities menu record the current maximum kV setting, then temporarily set the maximum kV to 80. Refer to Chapter 3 for the procedure to do this.

2.

Start the tube auto calibration sequence, and allow the generator to finish the 70 kV calibration step. Calibration will not be attempted at higher kV due to the kV limit set in step 1.

3.

Season the tube at 70 kV, large focus, 300 mA, by taking approximately 10 exposures of 50 mAs. These exposures should be taken at the maximum rate that the duty cycle limit will allow.

4.

Temporarily set the maximum kV to 110 kV as per step 1.

5.

Restart the tube auto calibration sequence, and allow the generator to finish the 100 kV calibration step. Calibration will not be attempted at higher kV due to the kV limit set in the previous step. THE GENERATOR WILL BEGIN AUTO CALIBRATION AT 40 KV EACH TIME THE AUTO CALIBRATION SEQUENCE IS RESTARTED IN THIS PROCEDURE.

6.

Season the tube at 100 kV, large focus, 300 mA, by taking approximately 10 exposures of 50 mAs. These exposures should be taken at the maximum rate that the duty cycle limit will allow.

7.

Reset the maximum kV to the value that it was in step 1 prior to the temporary change.

8.

Season the tube at 120 kV, large focus, 300 mA, if the kV limit allows this, by taking approximately 5 exposures of 50 mAs. These exposures should be taken at the maximum rate that the duty cycle limit will allow.

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6

AEC / CAEC BOARD INSTALLATION OR REPLACEMENT 1.

Switch the generator OFF at the console and disconnect the mains voltage.

2.

Turn the console on its face. A soft, clean cloth should be placed on the work surface to protect the console from damage while it is face down.

3.

Remove and temporarily set aside the screws at the bottom of the console. Carefully remove the bottom of the console enclosure.

4.

If an existing AEC board is to be replaced, follow these steps: a) Locate the four nylon standoffs that secure the AEC board to the U board. b) Turn the head of each plunger approximately 90° counterclockwise to release the latches. Refer to figure 6-3. c) Note the orientation of the existing AEC board, then gently lift the existing AEC board off the nylon standoffs. d) Orientate the replacement AEC board such that it will fit onto the existing nylon standoffs. Ensure that the pins on J7 on the U board are lined up with the mating connector on the AEC board, then press the AEC board into position such that the J7 connector pins and the AEC board are fully seated. When the AEC board is properly installed, turn the head of each plunger approximately 90° clockwise to secure the board. Ensure that there is a minimum of 1/16” (2 mm) clearance between the heatsink of Q3 on the U board and the bottom of the AEC board. If there is insufficient clearance, gently bend Q3 toward J1 on the U board until sufficient clearance is available. e) Reposition the console bottom and replace the hardware that was removed in step 3. f)

Connect the AEC cables as per chapter 2, then perform AEC setup and calibration per chapter 3 of the service manual.

INSERT THIS END INTO HOLES IN U BOARD NYLON STANDOFF

PLUNGER

Figure 6-3: Nylon standoff

5.

If an AEC board is to be installed in a generator that previously had no AEC board, follow these steps: a) Locate the four AEC board mounting holes on the U board. These are indicated 2.

in figure 6-

b) Install a nylon standoff in each mounting hole identified in the previous step. Press the end of the standoff shown in figure 6-3 into the holes in the board, and then fully depress the plunger on the nylon standoffs to secure the standoffs to the board.


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AEC / CAEC BOARD INSTALLATION OR REPLACEMENT (Cont) c) Orientate the AEC board to be installed with the component side up, and the connectors facing the rear of the console such that it will fit on the nylon standoffs. Ensure that the pins on J7 on the U board are lined up with the mating connector on the AEC board, then press the AEC board into position such that the J7 connector pins and the AEC board are fully seated. When the AEC board is properly installed, turn the head of each plunger approximately 90° clockwise to secure the board. Ensure that there is a minimum of 1/16” (2 mm) clearance between the heatsink of Q3 on the U board and the bottom of the AEC board. If there is insufficient clearance, gently bend Q3 toward J1 on the U board until sufficient clearance is available. d) Reposition the console bottom and replace the hardware that was removed in step 3. e) Connect the AEC cables as per chapter 2, then perform AEC setup and calibration per chapter 3 of the service manual.

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Theory of Operation

7

CHAPTER 7 THEORY OF OPERATION CONTENTS:

7.0 INTRODUCTION............................................................................................................................................... 7-2 7.1 FUNCTIONAL OVERVIEW............................................................................................................................... 7-2 7.1.1 Power Input Board...................................................................................................................................... 7-2 7.1.2 Resonant Board ......................................................................................................................................... 7-2 7.1.3 Low Speed Starter Board ........................................................................................................................... 7-2 7.1.4 Auxiliary Board ........................................................................................................................................... 7-3 7.1.5 Filament Board ........................................................................................................................................... 7-3 7.1.6 Power Supply Control Board ...................................................................................................................... 7-3 7.1.7 Inverter Board............................................................................................................................................. 7-4 7.1.8 DC Bus Assembly ...................................................................................................................................... 7-4 7.1.9 Customer Interface Board .......................................................................................................................... 7-4 7.1.10 U Board ............................................................................................................................................... 7-4 7.1.11 AEC Board (Optional)............................................................................................................................... 7-4 7.2.0 HT TANK........................................................................................................................................................ 7-5


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Theory of Operation

7.0

I Canada Inc

INTRODUCTION This Chapter provides an overview of the main functional blocks in the generator.

7.1

FUNCTIONAL OVERVIEW This X-ray generator contains the power input board, resonant board, low speed starter board, auxiliary board, filament board, power supply control board, inverter board, DC bus assembly, customer interface board, and the HT oil tank in the main cabinet. The console houses the U board and optional AEC board. Each of these boards will be described briefly in the following subsections. The HT tank will be briefly discussed in this Chapter also.

7.1.1

Power Input Board The AC mains power is connected to the main generator fuses on this board. When the main line or K5 on the power input board is closed, the mains voltage is switched to the DC bus assembly for rectification and filtering. The mains voltage is also fed to the other generator circuits from this board as required. The soft start circuit, which precharges the DC bus capacitors prior to the main line or closing, is located on the power input board. A DC bus voltage detector circuit is also located on this board. This circuit generates a signal that prevents the main or from closing should a DC bus fault be detected that prevents the DC bus from charging normally.

7.1.2

Resonant Board The resonant board contains the inverter resonant components (capacitor and inductors), and a current transformer which monitors the inverter current. A sample of the inverter current is then fed to the power supply control board where it is measured to ensure that it is within safe limits. Circuits on the power supply control board also use this sampled inverter current to synchronize the drive pulses to the inverter board.

7.1.3

Low Speed Starter Board The low speed starter board is mounted on the power input board and supplies the boost and run voltages to R type stator tubes. The boost time of approximately 1.5 seconds is controlled by a timer circuit on the auxiliary board. This timer starts when the prep command is received, causing the low speed starter to output approximately 230 VAC to the stator windings in the X-ray tube to rapidly bring the stator up to rated speed. After the 1.5 second boost time has expired, the stator voltage drops to approximately 50 VAC to maintain this speed for the duration of the X-ray exposure. Current sense relays on the low speed starter board monitor the current in both the main and shift windings. If either of these currents is low or absent, a rotor fault signal is sent to the auxiliary board and then to the power supply control board for processing.

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Auxiliary Board The auxiliary board contains the + and - 12 VDC supplies, and the + and - 35 VDC supplies, as well as the undervoltage detection circuit for the + and - 12 VDC supplies. The undervoltage fault signal is sent to the power supply control board for further processing by logic circuits on that board. The auxiliary board also processes the signal from the DC bus voltage detector on the power input board. If the DC bus voltage detector senses that the DC bus capacitors are not charging normally, circuits on the auxiliary board will prevent the the main line or from closing. The P/S not ready fault signal from the auxiliary board is routed to the power supply control for further processing. The auxiliary board also contains the rotor boost timer and rotor fault detector circuits as discussed in 7.1.3.

7.1.5

Filament Board The filament board contains the filament control, filament driver, filament monitoring, and filament fault circuits. The filament control circuit generates drive signals which cause the filament driver to produce filament primary current. This filament primary current is switched by a relay on the filament board. The primary current is then routed to either the large filament transformer, or to the small filament transformer in the HT tank. The large filament transformer supplies filament current to the large filament in the X-ray tube, while the small filament transformer supplies filament current to the small filament in the X-ray tube. The large / small switching command for the filament select relay originates on the console U board, and is routed through the power supply control board to the filament board. The filament current monitoring circuit samples the filament primary current, and is used to adjust the drive signal such that the actual filament current is equal to the demanded filament current. The filament current monitoring circuit will also generate a fault signal if the filament current is less than approximately 2 amps. This filament fault signal is processed by the power supply control board.

7.1.6

Power Supply Control Board The control signals from the U board in the console are routed directly to the power supply control board. Logic circuits on the power supply control board ensure that the proper signals and commands from the console are present before an X-ray exposure can be made. These logic circuits also monitor key fault indicators and inhibit an exposure if any of these faults are present. Signals indicating the presence of faults are sent by the power supply control board back to the console, where an error message will be displayed on the console LCD screen. The faults that are reported by the power supply control board include rotor fault, filament fault, tube arc fault (which as noted in Chapter 5 may be generated by any one of five fault detector circuits), and power supply not ready fault. Additionally, a P/S fault signal is generated that will inhibit exposures if any of the previous faults is present, or if the + or - 12 VDC supplies are low. Circuits on the power supply control board generate drive pulses for the inverter board. The power supply control board also contains kV and monitoring circuits which constantly monitor the kVp output and adjust the drive pulses to the inverter such that the actual kVp is equal to the kVp demanded. Therefore, the power supply control board performs the kVp regulation function. Lastly, the power supply control board contains mA and monitoring circuits. These circuits monitor the X-ray tube current and send a voltage which is proportional to the tube current back to the console where it is used by the console to automatically regulate the mA.


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Inverter Board The inverter board contains the high current FETs which drive the resonant circuit and the primaries of the HT transformers in the HT tank. The power supply control board generates the inverter drive signal. This drive signal causes the full bridge configured FETs to switch the nominal 600 VDC bus voltage to the HT transformer primaries. The secondary voltage produced by the HT transformers is determined by the frequency at which the DC bus voltage applied to the HT transformers is switched. This is governed by the control board, and is determined by comparing the actual kVp to the demanded kVp and constantly making corrections such that the demanded kVp is equal to the requested kVp.

7.1.8

DC Bus Assembly The DC bus assembly contains the DC bus capacitors and the mains rectifier. The DC bus capacitors are precharged via current limiting resistors on the power input board and the mains rectifier on the DC bus assembly when the generator is switched on. This limits the inrush current drawn by the generator at initial turn-on. Once the capacitors are sufficiently pre-charged, the main or will supply mains voltage to the DC bus assembly where it is rectified and filtered by a voltage doubler circuit which produces approximately 600 VDC. This nominal 600 VDC output from the DC bus assembly is fed to the inverter board as described above.

7.1.9

Customer Interface Board The customer interface board contains terminal blocks for the table and wall Bucky, for the S.I.D. interlocks, and for the X-ray tube thermal switch. Also on this board is a terminal block for the 24 VAC output for the collimator lamp and for the 24 VDC output for system locks. The customer interface board connects to the U board in the console via a 25 conductor cable.

7.1.10 U Board The U board in the console contains the microprocessor, EPROM, EEPROM, analog to digital and digital to analog converters, memory decoders and associated circuits. Analog circuits send and receive anaformation to and from the power supply control board (kVp demand, kVp , filament demand, mA ), and digital circuits send and receive digital information to and from the power supply control board (example X-ray command, prep command, rotor fault, filament fault etc). Signals from the U board are also sent to and from the room interface board (room interlocks, thermal switch, Bucky drive and ready signals), to and from the AEC board, to and from the keypad, and to and from the console LCD display.

7.1.11 AEC Board (Optional) The ramp from the AEC chamber is buffered by the AEC board input circuits, then it is fed to a gain stage for further processing. The ramp voltage is then routed to the U board, where it is monitored by the U. The U calculates in software the expected ramp voltage for each technique. The exposure is then terminated by the console when the magnitude of the ramp equals the precalculated value. The AEC board also contains switching circuits which perform AEC field selection, and switch the AEC ramp from either the table Bucky or the wall Bucky to the common buffer and amplifier circuits.

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HT TANK The HT tank contains two HT transformers, one for the anode and one for the cathode. The cathode transformer along with its rectifier and filter capacitors generates up to - 62.5 kVp for 125 kV generators, or - 75 kVp for 150 kV generators. The anode transformer along with its rectifier and filter capacitors generates up to + 62.5 kVp for 125 kV generators, or + 75 kVp for 150 kV generators. The kVp output and the X-ray tube current is sampled and fed back to the power supply control board via J9 on the HT tank. The HT tank also has an mA / mAs test jack E17 - E18 which allows the actual tube current to be measured if the shorting link is removed and an approved mA / mAs meter is connected. Filament transformers are also located in the HT tank. The output from the filament board is applied to the primaries of these transformers, the secondaries then couple the filament current to the filaments in the X-ray tube. The filaments float at cathode potential, therefore the filament transformer secondaries also provide the necessary high voltage isolation of the cathode. The HT tank is not field serviceable. The oil must be vacuum filled to purge all trapped air, otherwise the tank will not be able to withstand the rated kVp. This cannot be done in the field.


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Spares

8

CHAPTER 8 SPARES CONTENTS:

Section 8.1.0 8.2.0 8.3.0 8.4.0 8.5.0

Title INTRODUCTION ................................................................................................................................................. 2 SPARE PARTS LIST GENERATOR MAIN CABINET ........................................................................................ 2 SPARE PARTS LIST OPERATOR CONSOLE ................................................................................................... 2 SPARE PARTS LIST CONSOLE CABLES ......................................................................................................... 2 SPARE PARTS LIST FUSES .............................................................................................................................. 3


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Spares

8.1.0

I Canada Inc

INTRODUCTION This chapter contains the list of spare parts for the 30, 32.5, 37.5 kW single phase and three phase X-ray generators, and for the 50 kW three phase X-ray generator.

8.2.0

SPARE PARTS LIST GENERATOR MAIN CABINET DESCRIPTION Power input board Resonant Board Low speed starter board Auxiliary board Filament board Power supply control board Inverter board Customer interface board Transformer, aux power supply Transformer, room interface (1 phase units only) Transformer, room interface (3 phase units only) HT tank assembly (complete) REFER TO 8.5.0 FOR FUSES

8.3.0

PART NUMBER Consult factory Consult factory See note ⇒ 732221-02 731407-00 732816-03 Consult factory 735139-00 732417-00 735889-00

NOTE N/A N/A 7 2 1 3 N/A 1 1 N/A

SUGGESTED QTY N/A N/A 1 1 1 1 N/A 1 1 1

732415-00

N/A

1

Consult factory

N/A

N/A

SPARE PARTS LIST OPERATOR CONSOLE DESCRIPTION

PART NUMBER See note ⇒ 735206-00 7412290100

U board AEC board Battery, lithium 3.0V

8.4.0

NOTE

SUGGESTED QTY ⇐ See note ⇐ See note 1

5 4 1

SPARE PARTS LIST CONSOLE CABLES DESCRIPTION Cable assembly, 25 conductor, 25 ft Cable assembly, 37 conductor, 25 ft Cable assembly, 25 conductor, 50 ft Cable assembly, 37 conductor, 50 ft

Page 8-2

PART NUMBER 735169-00 735170-00 735169-01 735170-01

Rev. L

NOTE 6 6 6 6

SUGGESTED QTY ⇐ See note ⇐ See note ⇐ See note ⇐ See note


Ch # 740914-08

I Canada Inc 8.5.0

Spares

8

SPARE PARTS LIST FUSES FUSE LOCATION Auxiliary board: F1, F2 (12A 250V Slo-Blo) Auxiliary board: F3, F4 (7A 250V Slo-Blo)

FUSE TYPE & PART NO. MDA-12, 6713746500 MDA-7, 6713000500

SUGGESTED QTY 5 5

Filament board: F1, F2 (4A 250V Slo-Blo)

GDC-4, 5550033100

5

Low speed starter board: F1, F3 (8A 250V Slo-Blo)

S506-8A, 5550037500

5

Low speed starter board: F2 (5A 250V Slo-Blo) Power input board. 1 phase: F1, F2 (10A 250V SloBlo) Power input board. 1 phase: F4 (3A 250V Slo-Blo) Power input board. 1 phase: F6 (1.5A 250V SloBlo) Power input board. 1 phase: F5 (A, B) 100A 250VAC

GDC-5, 5550035600 MDA-10, 6713000200

5 5

MDL-3, 6713746700 MDL-1.5, 6713541500

5 5

NLN-100, 6711906500

5

Power input board. 3 phase: F1, F2 (10A 500V SloBlo)

FNQ-10, 6711905500

5

Power input board. 3 phase: F4 (2A 250V Slo-Blo)

GDC-2, 5550032600

5

Power input board. 3 phase: F5 (A, B, C) 60A 600VAC

OTS-60, SC3434

5

Customer interface board: F1, F5 (1.6A 250V SloBlo)

GDC-1.6, 5550033300

5

Customer interface board: F2 (3.15A 250V Slo-Blo)

GDC-3.15, 5550036600

5

Customer interface board: F3 (6.3A 250V Slo-Blo)

GDC-6.3, 5550033400

5

Primary of 24V interface / console power transformer: F2 (three phase units only) 1A 500V Primary of power supply auxiliary transformer: F1 (single phase units) 3A 250V

FNQ-1, 6711905800

5

FNM-3, 6711907400

5

Primary of power supply auxiliary transformer: F1 (three phase units) 2A 500V

FNQ-2, 5550005300

5

Customer interface board: F4

NOTE: 1.

The part number shown is used on all versions of this X-ray generator. These parts are not model or option dependent.

2.

The part number shown is the suggested replacement for the original auxiliary board. The spares board is “jumper configurable” in the field, and as such will replace the original auxiliary board. This is intended to eliminate the need to stock multiple configurations of this board.

3.

The part number shown is the suggested replacement for the original power supply control board. The spares board is “full featured” and will replace the original board in your generator regardless of configuration. This is intended to eliminate the need to stock multiple configurations of this board.


Ch # 740914-08

Rev. L

Page 8-3

8

Spares

I Canada Inc

4.

This item only used on generators fitted with the optional AEC board. Spares should be stocked accordingly.

5.

Replacement generator U board part number 735225-02 should be ordered for spares use. This board will need jumpers JW7 and JW8 removed for 30 - 37.5 kW generator usage per separate instruction shipped with spare boards. Refer to the table below for spares application of this board. ORIGINAL U BOARD 735133-00, 02 735133-03, 04 735225-00, 02

REPLACEMENT U BOARD 735225-02 735225-02 735225-02

REMARKS Note (a) below Note (b) below Note (c) below

Notes: (a)

(b)

(c)

735225-02 will replace 735133-00, 735133-02 BUT new firmware will be required along with the new board. Please consult the factory for details. JW7 and JW8 on the replacement board must be correctly set, refer to separate instruction shipped with the spare board. 735225-02 will directly replace 735133-03, 735133-04, new firmware is not required. JW7 and JW8 on the replacement board must be correctly set, refer to separate instruction shipped with the spare board. 735225-02 is the exact replacement for 735225-00 and 735225-02 when JW7 and JW8 on the replacement board are correctly set, refer to separate instruction shipped with the spare board.

6.

Subject cables are available in 25 foot and 50 foot lengths. Spares should be ordered and stocked to suit the desired cable lengths.

7.

The low speed starter part number with a 33µF phase shift capacitor for standard “R” type stators is 732752-00. The part number with a 12.5µF phase shift capacitor is 732752-01, and the part number with a 45µF phase shift capacitor is 732752-02.

Page 8-4

Rev. L


Ch # 740914-08

I Canada Inc

Schematics

9

CHAPTER 9 SCHEMATICS CONTENTS:

9.1.0 INTRODUCTION ........................................................................................................................................... 9-2 9.2.0 FUNCTIONAL SCHEMATIC INDEX.............................................................................................................. 9-2


Ch # 740914-09

Rev. E

Page 9-1

9

Schematics

9.1.0

I Canada Inc

INTRODUCTION This chapter contains the functional schematics for your X-ray generator. Each schematic represents a major function in the generator; the eight functional schematics in this chapter represent all of the major functional blocks in this generator.

9.2.0

FUNCTIONAL SCHEMATIC INDEX The following functional schematics are included in this manual. DESCRIPTION DC Bus and Power Distribution System ON Customer Interface X-Ray Exposure KV Control and Filament Drive and mA Control Low Speed Starter AEC

Page 9-2

DRAWING NUMBER# MD-0809 MD-0810 MD-0811 MD-0812 MD-0813 MD-0814 MD-0815 MD-0816

Rev. E


Ch # 740914-09

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