Page 1
MPX 525 and 625 X-Ray Generator Operation and Service Manual This manual contains information for the operation, installation, and maintenance of the MPX 525 & 625 Generator Non- Anatomically Programmed Version (Non-APR) Do Not Discard Revison Date: 7/5/2005 8000-MPX 525/625 Revision A...
Page 2
In the event of a malfunction that could, or has contributed to a patient or operator injury, please contact: In North America Del Medical Imaging Corporation 11550 West King Street Franklin Park, IL 60131 Tel: 847-288-7000 Toll Free Tel. 800-800-6006 Fax: 847-288-7011 In Europe Villa Sistemi Medicali...
Page 3
Revision History Revision Date Comments 7/5/2005 Initial Release...
Page 4
MANUAL IMPROVEMENT RECOMMENDATION We at Del Medical Imaging Corporation are most interested in improving the quality of the Technical Documentation we provide. Please identify improvements or corrections and fax them to our Technical Publications Department. Name________________________________________________ Dealership____________________________________________ Manual Part Number____________________________________ Device Name__________________________________________ Recommendation or Correction_____________________________________ ________________________________________________________________...
MPX 525/625 Generators Revision A Table of Contents Table of Contents INTRODUCTION ......................1 Damage in Transportation ................1 X-Ray Protection....................1 X-Ray Equipment Safety Recommendations...........2 Electrical Grounding..................2 X-Ray Tube......................2 Features and Benefits of the MPX 525 and 625 ..........3 OPERATING MANUAL....................5 Introduction ......................5 Power On/Off Procedure..................7 APX Control Console Description ..............8 Mode Selection ...................10...
Page 6
MPX 525/625 Generators Revision A Table of Contents Connecting 208 VAC Three Phase Power (30 kW Only) (636-5010P1 Transformer) ..................54 Connecting 480 VAC Three Phase Power (30 kW & 40kW) (636- 5010P1 Transformer) ................67 Connecting 208 VAC Three Phase Power (40 kW Only) (636-0070P1 Transformer) ..................81 Cable Index ................95 Cable Index Notes ..............95...
Page 8
MPX 525/625 Generators Revision A Table of Contents Calibration of SCR Hold Off Time ..............147 Boost Time Adjustment................148 AEC Inspection and Calibration ..............149 AEC Cable Interconnections................149 Connections for Ion Chambers on Main AEC Board ......149 AEC Communication Link Checkout ..........150 AEC Device Field Calibration Procedure ..........152 Required equipment: ..............152 Calibration Procedure.............153...
MPX 525/625 Generator Revision A Introduction INTRODUCTION This manual contains the necessary instructions for proper operation, installation, adjustments and calibration of the MPX 525 & 625 High Frequency Generator. All persons operating or servicing this equipment need to have read this manual beforehand.
MPX 525/625 Generator Revision A Introduction Personal radiation monitoring and protective devices are available. Operators are urged to use them to protect against unnecessary radiation exposure. It is important that Operators and their supervisors be fully acquainted with applicable government radiation protection regulations. Many provisions of these regulations are based on recommendations of the National Council on Radiation Protection and Measurements.
MPX 525/625 Generator Revision A Introduction the generator. Tube inserts of load capacities other than those for which the MPX 525 or 625 was configured may be permanently damaged if used with the incorrect tube loading program. Consult Del Medical Imaging Corporation for additional information.
Page 12
MPX 525/625 Generator Revision A Introduction General features: • Individual control of kV, mAs, mA and time with the availability of both two and three point operating modes • Liquid Crystal Display • Closed loop kV stabilization • Closed loop mA stabilization •...
Operating Manual OPERATING MANUAL Introduction The Universal MPX is a high frequency, microprocessor based x-ray generator, which is designed for general radiographic applications. The operator’s control features a unique menu driven, soft button interface that makes it extremely easy to use.
Page 14
MPX 525/625 Generator Revision A Operating Manual • 3 Point Mode: Gives operator free selection of exposure techniques, including kV, mA, and Time. Additionally, the calculated mAs of the exposure will be displayed in the center portion of the LCD screen. Software will inhibit selection of techniques that are beyond the limitations of the x-ray tube.
MPX 525/625 Generator Revision A Operating Manual Power On/Off Procedure To Power Up The APX 525 or 625 Generator: Turn the main power disconnect switch to ON Turn the power switch of the APX 525 or 625 control to ON. This switch is located on the left side of the operator control console Within a few seconds, all control panel indicators will illuminate, and an audible tone will sound during the Power-Up Self Test.
MPX 525/625 Generator Revision A Operating Manual APX Control Console Description The multi-function, membrane buttons and rotational knob are used either to make a selection from the alternatives listed in the display, such as the optional AEC mode, the APR Mode, or to select a technique parameter, such as to change the kV, time, mA, or mAs.
Page 17
MPX 525/625 Generator Revision A Operating Manual Single Function Buttons Button Description Pressing the button above this portion of the display will highlight the current value. The kV may be changed in single digit increments, using the rotational knob. Pressing the button above this portion of the display will highlight the current value.
MPX 525/625 Generator Revision A Operating Manual Single Function Buttons Button Description Pressing the button adjacent to this portion of the display will toggle the current value between the 2 and 3 point technique modes. In 2 point mode, the operator selects only the kV and mAs of an exposure.
MPX 525/625 Generator Revision A Operating Manual Setting Default Startup Parameters Default startup techniques may be programmed by the operator in the following manner: 1. Depress and hold the button at the lower left corner of the display screen while turning the generator ON.
MPX 525/625 Generator Revision A Operating Manual Multi-function Buttons Each multi-function button is defined on the central display screen. An undefined button will have no effect when pressed. Pressing a defined button will either toggle through a choice of options or allow a technique factor to be modified by the increment or decrement buttons.
(For exposure procedures see Prep and Expose.) AEC MODE The Universal Automatic Exposure Control, if installed, can be activated by pressing the <AEC> mode button. When you select AEC, the following parameters are not displayed: •...
MPX 525/625 Generator Revision A Operating Manual Daily X-Ray Tube Seasoning Procedure Follow the manufacturer’s tube warm up procedure to extend the useful life of the x-ray tube. It is important to slowly warm the tube target before using it if the unit has been idle for three hours or longer.
Page 23
MPX 525/625 Generator Revision A Operating Manual AEC Error Messages: If an AEC exposure terminates improperly, one of two faults will be displayed: AEC Exposure Termination Faults Exposure was terminated by the AEC mAs backup circuitry, possibly a problem requiring service. Check to make sure that the selected backup mAs has been properly set to a value two to three times Backup mAs Termination...
MPX 525/625 Generator Revision A Operating Manual Specifications GENERAL 208 VAC, 60 Hz., single phase, maximum momentary current draw: 366 Amps 240 VAC, 60 Hz., single phase, maximum Input Power momentary current draw: 293 Amps (Note: MPX 625 operates only on three phase) 208 to 480 VAC, 60 Hz, three phase (consult pre installation chapter for specific currents...
MPX 525/625 Generator Revision A Operating Manual POWER MODULE Power Rating 30 kilowatts or 40 kilowatts Type High Frequency switch mode, Microprocessor Controlled Kilovolt Range 40-125 kV Maximum mAs 500 or 600 Minimum mAs Maximum mA 500 or 600 Focal Spot Selection Operator Selectable Independent of Techniques (within Tube Limits) OPERATOR CONSOLE...
PX-1429 - 0.6 X 1.2 PX-1436 - 0.6 X 1.2 Comet DX39H - 0.6 X 1.5 Consult Del Medical Imaging technical support for tubes that are not listed. Universal Model 110-0085G6 Automatic Exposure Control: SYSTEM WEIGHTS AND DIMENSIONS Component Weight Control Console (with floor stand) 30 lbs.
28 cm Pedestal Dimensions D.H.H.S. COMPLIANCE The UNIVERSAL MPX 525/625 High Frequency x-ray generator and its associated accessories are certified components conforming to all applicable radiation performance standards as outlined by the Food and Drug Administration, Code of Federal Regulations, Title 21, Subchapter J, at the time of manufacture.
MPX 525/625 Generator Revision A Operating Manual USER SERVICE AND MAINTENANCE Cleanliness is a fundamental rule in maintaining equipment. At least once a month, external metallic surfaces should be wiped to remove dust build-up or any other foreign material that may have accumulated. Enameled metal surfaces should be cleaned using a clean cloth slightly moistened in clean water.
MPX 525/625 Generator Revision A Operating Manual Caution: Certain tests require the production of X-rays. Field personnel should take precautions to ensure their personal safety and the safety of others in close proximity. Minimum precautions are as follows: a. Wear lead aprons b.
MPX 525/625 Generator Revision A Pre-Installation PRE-INSTALLATION Pre-Installation Planning WIRING REQUIREMENTS Caution: Generator performance will be impaired if additional circuitry is powered by the same incoming line. There are no accessory power provisions within the generator. Attempts to attach accessory items such as wall holders, collimator, tubestands or table power sources to this generator will damage circuitry.
MPX 525/625 Generator Revision A Pre-Installation NOTE: The minimum wire sizes listed above have been selected for the maximum wire resistance allowed at maximum momentary full load current. To meet National Electric Code Specifications, you must select a wire type having an amperage rating of at least 50% of the generator’s peak current demand.
MPX 525/625 Generator Revision A Pre-Installation Grounding A separate #6 AWG wire to earth ground must be provided. Follow guidelines established by the National Electrical Code. Single Phase Installations (MPX-525 Only) Single phase versions of the MPX-525 may be operated on the following incoming line voltages only: 208 or 240 VAC, single phase, with one safety ground.
Page 36
MPX 525/625 Generator Revision A Pre-Installation DISTRIBUTION TRANSFORMER CUSTOMER MAINS DISCONNECT SUPPLIED SWITCH AND FUSES INPUT WIRING 2 AC CONDUCTORS AND 1 GROUND (208 VAC CONFIGURATION SHOWN) SINGLE PHASE LINE MATCHING XFMR #636-0021P2 CABLE CABLE #126-0211G1 #126-0214G2 2 COND. 16 AWG 3 COND.
Page 38
MPX 525/625 Generator Revision A Pre-Installation 3. Unscrew four inline-transformer mounting bolts and washers (1) and save for later use. Figure 2. Transformer Mounting Screws 4. Place in-line transformer (1 in Fig. 3) in position shown and secure in place with four bolts and washers (2) removed in step 3. 2 (x4) Figure 3.
Page 39
MPX 525/625 Generator Revision A Pre-Installation 5. Remove main cable (P/N 126-0214G2) from in-line transformer kit. Note that the wires on one end of the cable are longer than on the other end. 6. Loosen two stress relief clamp screws (1 Fig. 4). 7.
Page 40
MPX 525/625 Generator Revision A Pre-Installation Figure 6. Proper Cable Position 9. Remove secondary cable (P/N 126-0211G1) from in-line transformer kit. Note that the wires on one end of the cable are longer than the other end. 10. Loosen two stress relief clamp screws (1 Fig. 7). 11.
Page 41
MPX 525/625 Generator Revision A Pre-Installation Warning: Make sure that main power source disconnect is turned off and tagged “Machine is Being Serviced” before doing the following steps. You may get fatally shocked if you do not. 13. Turn off main power disconnect switch for generator’s outside power source.
Page 42
MPX 525/625 Generator Revision A Pre-Installation 16. Loosen two stress relief clamp screws (1 Fig. 9). 17. Insert the end of the main power cable (2) into the stress relief clamp and into the generator cabinet until there is enough wire slack inside the cabinet for the cable’s ground wire to reach the ground stud on the cabinet’s floor as shown in Figure 10.
Page 43
MPX 525/625 Generator Revision A Pre-Installation 19. Unscrew two rear cover screws (1 in Fig. 11) and remove rear cover (2). Figure 11. Rear Cover 20. Loosen two stress relief clamp screws (1 Fig. 12). 21. Insert the end of the main cable (2) (P/N 126-0214G2) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 12.
Page 44
MPX 525/625 Generator Revision A Pre-Installation 25. Loosen two stress relief clamp screws (1 Fig. 13). 26. Insert the end of the secondary cable (2) (P/N 126-0211G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 13.
Page 45
MPX 525/625 Generator Revision A Pre-Installation 30. Connect one of incoming 208 VAC power lines to lead #1 on in-line transformer with Burndy connector as shown in Figure 14 below. Do not wrap connection with tape yet. 31. Connect other incoming 208 VAC power line to lead #2 on in-line transformer with Burndy connector as shown in Figure 14 below.
Page 47
MPX 525/625 Generator Revision A Pre-Installation 3. Unscrew four inline-transformer mounting bolts and washers (1) and save for later use. Figure 2. Transformer Mounting Screws 4. Place in-line transformer (1 in Fig. 3) in position shown and secure in place with four bolts and washers (2) removed in step 3. 2 (x4) Figure 3.
Page 48
MPX 525/625 Generator Revision A Pre-Installation 5. Remove main cable (P/N 126-0214G2) from in-line transformer kit. Note that the wires on one end of the cable are longer than on the other end. 6. Loosen two stress relief clamp screws (1 Fig. 4). 7.
Page 49
MPX 525/625 Generator Revision A Pre-Installation Figure 6. Proper Cable Position 9. Remove secondary cable (P/N 126-0211G1) from in-line transformer kit. Note that the wires on one end of the cable are longer than the other end. 10. Loosen two stress relief clamp screws (1 Fig. 7). 11.
Page 50
MPX 525/625 Generator Revision A Pre-Installation Warning: Make sure that main power source disconnect is turned off and tagged “Machine is Being Serviced” before doing the following steps. You may get fatally shocked if you do not. 13. Turn off main power disconnect switch for generator’s outside power source.
Page 51
MPX 525/625 Generator Revision A Pre-Installation 16. Loosen two stress relief clamp screws (1 Fig. 9). 17. Insert the end of the main power cable (2) into the stress relief clamp and into the generator cabinet until there is enough wire slack inside the cabinet for the cable’s ground wire to reach the ground stud on the cabinet’s floor as shown in Figure 10.
Page 52
MPX 525/625 Generator Revision A Pre-Installation 19. Unscrew two rear cover screws (1 in Fig. 11) and remove rear cover (2). Figure 11. Rear Cover 20. Loosen two stress relief clamp screws (1 Fig. 11). 21. Insert the end of the main cable (2) (P/N 126-0214G2) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 12.
Page 53
MPX 525/625 Generator Revision A Pre-Installation 25. Loosen two stress relief clamp screws (1 Fig. 13). 26. Insert the end of the secondary cable (2) (P/N 126-0211G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 13.
Page 54
MPX 525/625 Generator Revision A Pre-Installation 30. Connect one of incoming incoming 240 VAC power lines to lead # 1 on in- line transformer with Burndy connector as shown in Figure 14 below. Do not wrap connection with tape yet. 31.
MPX 525/625 Generator Revision A Pre-Installation Three Phase Installations All 30 kW, three phase versions of the MPX-525 generators may be operated on the following incoming line voltages: 208, 230, 240, 380, or 480 VAC, three phase, with one safety ground and no neutral.
Page 56
MPX 525/625 Generator Revision A Pre-Installation it 636-5010P1 Connection Information for K Brackets Optional #636-5010P1 - Three Phase Line Matching Autoformer for 30 kW & 40 kW Applications Do Not Use for 40kW 208VAC Applications 3-Phase Tap Voltages Tap #1 Tap #2 Tap #3 Tap #4...
Page 58
MPX 525/625 Generator Revision A Pre-Installation Connection Information for Kit 636-5010P1 DISTRIBUTION TRANSFORMER DISCONNECT AND FUSES CUSTOMER PROVIDED WIRING: 3 AC CONDUCTORS AND 1 GROUND LINE MATCHING TRANSFORMER 636-5010P1 CABLE CABLE #126-0211G1 #126-0208G1 2 COND. #16 AWG 4 COND. 10 AWG POWER MODULE THREE PHASE LINE MATCHING CONFIGURATION Interconnection Diagram –...
Page 59
MPX 525/625 Generator Revision A Pre-Installation it 636-0070P1 – Connection Information for K For 40kW 208 V Applications only #636-0070P1 - Three Phase Line Matching Autoformer For 40 kW 208V Applications Only 3-Phase Tap Voltages Tap #1 Tap #2 Tap #3 Tap #4 Tap #5 Tap #6...
Page 60
MPX 525/625 Generator Revision A Pre-Installation it 636-0070P1 – Connection Information for K For 40kW 208 V Applications only Single Phase Output to 280 V 280 V 260 V 260 V 240 V 240 V 208 V 208 V 190 V Three Phase 190 V Three Phase...
Page 61
MPX 525/625 Generator Revision A Pre-Installation it 636-0070P1 – Connection Information for K For 40kW 208 V Applications only DISTRIBUTION TRANSFORMER DISCONNECT AND FUSES CUSTOMER PROVIDED WIRING: 3 AC CONDUCTORS AND 1 GROUND LINE MATCHING TRANSFORMER 636-0070P1 CABLE CABLE #126-0211G1 #126-0208G1 2 COND.
MPX 525/625 Generator Revision A Pre-Installation CONNECTING 208 VAC THREE PHASE POWER (30 kW ONLY) (636-5010P1 TRANSFORMER) Note This procedure is NOT for 208 VAC 40 kW applications. That procedure starts on page 81. Tools Required: • Ratchet Wrench • 12” Socket Extension •...
Page 63
MPX 525/625 Generator Revision A Pre-Installation 3. Unscrew two high-tension transformer bracket nuts (1 in Fig. 2) and remove bracket (2). 4. Slide transformer (3) all the way to the left. 5. Unscrew four inline-transformer mounting bolts and washers (4) and save for later use.
Page 64
MPX 525/625 Generator Revision A Pre-Installation 6. Place in-line transformer (1 in Fig. 3) in position shown and secure in place with four bolts and washers (2) removed in step 5. 7. Reposition high-tension transformer (3) and secure in place with bracket (4) and two bolts.
Page 65
MPX 525/625 Generator Revision A Pre-Installation Note In the following steps, you have to remove select insulators (1 in Fig. 4) and connect Burndy connectors (2) to select tabs of the in-line transformer. Make sure that each Burndy connector is connected to each tab exactly as shown in Figure 4.
Page 66
MPX 525/625 Generator Revision A Pre-Installation 10. Remove main cable (P/N 126-0208G1) from in-line transformer kit. This cable has four wires. Note that the wires on one end of the cable are longer than the other end. 11. Loosen two stress relief clamp screws (1 Fig. 6). 12.
Page 67
MPX 525/625 Generator Revision A Pre-Installation Figure 7. Proper Cable Position 14. Connect red, white and black wires (1,2 & 3 in Fig. 8) to 280 VAC Burndies on transformer as shown below . It does not matter which color wire goes in which position.
Page 68
MPX 525/625 Generator Revision A Pre-Installation 16. Remove secondary cable (P/N 126-0211G1) from in-line transformer kit. This cable has two wires. Note that the wires on one end of the cable are longer than the other end. 17. Loosen two stress relief clamp screws (1 Fig. 9). 18.
Page 69
MPX 525/625 Generator Revision A Pre-Installation 20. Connect white and black wires (1 & 2 in Fig. 10) to 240 VAC Burndies on transformer as shown below. It does not matter which color wire goes in which position. Securely wrap each Burndy connection with electrical tape. 1 &...
Page 70
MPX 525/625 Generator Revision A Pre-Installation 21. Unscrew two rear cover screws (1 in Fig. 11) and remove rear cover (2). Figure 11. Rear Cover 22. Loosen two stress relief clamp screws (1 Fig. 12). 23. Insert the end of the main cable (2) (P/N 126-0208G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 12.
Page 71
MPX 525/625 Generator Revision A Pre-Installation 27. Loosen two stress relief clamp screws (1 Fig. 13). 28. Insert the end of the secondary cable (2) (P/N 126-0211G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 13.
Page 72
MPX 525/625 Generator Revision A Pre-Installation Warning: Make sure that main power source disconnect is turned off and tagged “Machine is Being Serviced” before doing the following steps. You may get fatally shocked if you do not. 37. Turn off main power disconnect switch for generator’s outside power source.
Page 73
MPX 525/625 Generator Revision A Pre-Installation 33. Loosen two stress relief clamp screws (1 Fig. 14). 34. Insert the end of the main power cable (2) into the stress relief clamp and into the generator cabinet until there is enough wire slack inside the cabinet for the cable wires to reach all tabs on the transformer.
MPX 525/625 Generator Revision A Pre-Installation CONNECTING 480 VAC THREE PHASE POWER (30 kW & 40KW) (636-5010P1 TRANSFORMER) Note This procedure is NOT for 208 VAC 40 kW applications. That procedure starts on page 81. Tools Required: • Ratchet Wrench •...
Page 76
MPX 525/625 Generator Revision A Pre-Installation 3. Unscrew two high-tension transformer bracket nuts (1 in Fig. 2) and remove bracket (2). 4. Slide transformer (3) all the way to the left. 5. Unscrew four inline-transformer mounting bolts and washers (4) and save for later use.
Page 77
MPX 525/625 Generator Revision A Pre-Installation 6. Place in-line transformer (1 in Fig. 3) in position shown and secure in place with four bolts and washers (2) removed in step 5. 7. Reposition high-tension transformer (3) and secure in place with bracket (4) and two bolts.
Page 78
MPX 525/625 Generator Revision A Pre-Installation Note In the following steps, you have to remove select insulators (1 in Fig. 4) and connect Burndy connectors (2) to select tabs of the in-line transformer. Make sure that each Burndy connector is connected to each tab exactly as shown in Figure 4.
Page 79
MPX 525/625 Generator Revision A Pre-Installation 10. Remove main cable (P/N 126-0208G1) from in-line transformer kit. This cable has four wires. Note that the wires on one end of the cable are longer than the other end. 11. Loosen two stress relief clamp screws (1 Fig. 6). 12.
Page 80
MPX 525/625 Generator Revision A Pre-Installation Figure 7. Proper Cable Position 14. Connect red, white and black wires to (1,2 & 3 in Fig. 8) 280 VAC Burndies on transformer as shown below. It does not matter which color wire goes in which position.
Page 81
MPX 525/625 Generator Revision A Pre-Installation 16. Remove secondary cable (P/N 126-0211G1) from in-line transformer kit. This cable has two wires. Note that the wires on one end of the cable are longer than the other end. 17. Loosen two stress relief clamp screws (1 Fig. 9). 18.
Page 82
MPX 525/625 Generator Revision A Pre-Installation 20. Connect white and black wires (1 & 2 in Fig. 10) to 240 VAC Burndies on transformer as shown below. It does not matter which color wire goes in which position. Securely wrap each Burndy connection with electrical tape. 1 &...
Page 83
MPX 525/625 Generator Revision A Pre-Installation 21. Unscrew two rear cover screws (1 in Fig. 11) and remove rear cover (2). Figure 11. Rear Cover 22. Loosen two stress relief clamp screws (1 Fig. 12). 23. Insert the end of the main cable (2) (P/N 126-0208G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 12.
Page 84
MPX 525/625 Generator Revision A Pre-Installation 27. Loosen two stress relief clamp screws (1 Fig. 13). 28. Insert the end of the secondary cable (2) (P/N 126-0211G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 13.
Page 85
MPX 525/625 Generator Revision A Pre-Installation Warning: Make sure that main power source disconnect is turned off and tagged “Machine is Being Serviced” before doing the following steps. You may get fatally shocked if you do not. 32. Turn off main power disconnect switch to generator from local source. 33.
Page 86
MPX 525/625 Generator Revision A Pre-Installation 36. Loosen two stress relief clamp screws (1 Fig. 14). 37. Insert the end of the main power cable into the stress relief clamp and into the generator cabinet until there is enough wire slack inside the cabinet for the cable wires to reach all tabs on the transformer.
Page 87
MPX 525/625 Generator Revision A Pre-Installation 39. Connect red, white and black wires (1,2 & 3 in Fig. 15) from main cable to 480 VAC Burndies on in-line transformer as shown below. It does not matter which color wire goes in which position. Securely wrap each Burndy connection with electrical tape.
MPX 525/625 Generator Revision A Pre-Installation CONNECTING 208 VAC THREE PHASE POWER (40 KW ONLY) (636-0070P1 TRANSFORMER) Note This procedure is NOT for 208 VAC 30 kW applications. That procedure starts on page 54. Tools Required: • Electrical Tape • Pliers •...
Page 90
MPX 525/625 Generator Revision A Pre-Installation 3. Unscrew four inline-transformer mounting bolts and washers (1) and save for later use. Figure 2. Transformer Mounting Screws 4. Place in-line transformer (1 in Fig. 3) in position shown and secure in place with four bolts and washers (2) removed in step 3.
Page 91
MPX 525/625 Generator Revision A Pre-Installation 5. Remove main cable (P/N 126-0208G1) from in-line transformer kit. This cable has four wires. Note that the wires on one end of the cable are longer than the other end. 6. Loosen two stress relief clamp screws (1 Fig. 5). 7.
Page 92
MPX 525/625 Generator Revision A Pre-Installation Figure 7. Proper Cable Position 9. Remove secondary cable (P/N 126-0211G1) from in-line transformer kit. Note that the wires on one end of the cable are longer than the other end. 10. Loosen two stress relief clamp screws (1 Fig. 8). 11.
Page 93
MPX 525/625 Generator Revision A Pre-Installation 13. Unscrew two rear cover screws (1 in Fig. 9) and remove rear cover (2). Figure 9. Rear Cover 14. Loosen two stress relief clamp screws (1 Fig. 10). 15. Insert the end of the main cable (2) (P/N 126-0208G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 10.
Page 94
MPX 525/625 Generator Revision A Pre-Installation 19. Loosen two stress relief clamp screws (1 Fig. 11). 20. Insert the end of the secondary cable (2) (P/N 126-0211G1) into the stress relief clamp until the black insulation on the cable is within the stress relief clamp as shown in Figure 11.
Page 95
MPX 525/625 Generator Revision A Pre-Installation Warning: Make sure that main power source disconnect is turned off and tagged “Machine is Being Serviced” before doing the following steps. You may get fatally shocked if you do not. 24. Turn off main power disconnect switch for generator’s outside power source. 25.
Page 96
MPX 525/625 Generator Revision A Pre-Installation 27. Loosen two stress relief clamp screws (1 Fig. 13). 28. Insert the end of the main power cable (2) into the stress relief clamp and into the generator cabinet until there is enough wire slack inside the cabinet for the cable’s ground wire to reach the ground stud on the cabinet’s floor as shown in Figure 14.
Page 98
MPX 525/625 Generator Revision A Pre-Installation Connect red, white and black wires (1,2 & 3 in Fig. 16) from cable (P/N 126- 0208G1) to Tap wire #6 on all three coils of transformer with Burndy connectors as shown below. It does not matter which color wire goes in which position.
Page 99
MPX 525/625 Generator Revision A Pre-Installation 32. Connect black and white wires (1 & 2 in Fig. 17) from cable (P/N 126- 0211G1) to Tap wire #4 on any two coils of transformer with Burndy connectors as shown below. It does not matter which color wire goes in which position.
Page 100
MPX 525/625 Generator Revision A Pre-Installation 33. Connect ground wire from power cable to as shown below. Figure 18. Power Cable Ground Connect red, white and black wires (1,2 & 3 in Fig. 19) from power cable to Tap wire #3 on all three coils of transformer with Burndy connectors as shown below.
Page 102
MPX 525/625 Generator Revision A Pre-Installation Cable Index MAIN POWER AUX. POWER TABLE DISCONNECT DISCONNECT ELECTRIC WALL STAND LOCK SUPPLY LINE MATCH COLLIMATOR WALL TRANSFORMER POWER RECEPTOR / SUPPLY BUCKY TABLE RECEPTOR / BUCKY POWER MODULE TUBE 1 COLLIMATOR WALL ION AEC CHASSIS CHAMBER TABLE ION...
MPX 525/625 Generator Revision A Installation Cable Index Cable # Description Length Part Number Main Power (not supplied) High Power Line Match to Power 8 feet (2.4 m) 126-0214G2 Module – Single Phase High Power Line Match to Power 8 feet (2.4 m) 126-0208G2 Module –...
MPX 525/625 Generator Revision A Installation Modifications AEC Chassis Modifications Once mounted in the rack cabinet, the rear mounting panel and the front box cover of the AEC device will not be needed. The AEC control box assembly will mount directly to the rear of the cabinet wall.
MPX 525/625 Generator Revision A Installation GENERATOR INTERCONNECTIONS Power Module Exposure Interlocks Each interlock switch must be an isolated set of contacts which closes in the exposure “Go” condition. TB1 - 1 to Door Interlock TB1 - 2 to Collimator Interlock TB1 - 3 to Common If no door or collimator interlocks are present, wire jumpers must be added to TB1 to allow an exposure.
MPX 525/625 Generator Revision A Installation Plug Connections to Power Module J13 – Connects to operator console CPU board at J5. Stator Connections TB3 - 1 Phase (08) TB3 - 2 Main (07) TB3 - 3 Common (09) TB3 - 4 Thermal Switch * TB3 - 5 Thermal Switch Common * *An isolated, normally closed set of contacts, mounted on the tube housing, which opens if the housing is beyond normal operating temperatures.
MPX 525/625 Generator Revision A Service Adjustments SERVICE ADJUSTMENTS Start Up, Operational Check and Calibration Procedure GENERAL NOTES This procedure is to be followed: 1. After initial installation of the MPX 525/625 2. Before beginning calibration of the MPX 525/625 3.
Page 111
MPX 525/625 Generator Revision A Service Adjustments Warning: The following procedures will produce x-rays. Operating personnel should take precautions to ensure their personal safety and the safety of others in close proximity. Minimum precautions are as follows: a) Wear lead aprons b) Personnel remaining in the X-ray room during exposure should be behind a lead shield c) Minimize radiation scatter through doorways, walls and floor...
MPX 525/625 Generator Revision A Service Adjustments COMPONENT IDENTIFICATION Pictorial Diagrams Diagram Figure Number Bottom Chassis Assembly Power Module Power Module Front Panel Power Module Top View Power Module Inner Rear Panel Inverter Power Supply Board Mother Board I/O Board Relay Control Board kV Regulator Logic Board...
Page 127
MPX 525/625 Generator Revision A Service Adjustments Top of Board Boost / Run Time Adjust (R29) U23 pin 10 – Filament Protection Adjustment test point mA Fault Adjust (R57) (Filament Protection) Tube 1 Small Spot Preheat (R70) mA Adjust (R63) Tube 2 Small Spot Preheat (R71)
MPX 525/625 Generator Revision A Service Adjustments ADJUSTMENT POT IDENTIFICATIONS GENERATOR START UP OPERATIONAL TESTS AND INSTALLATION SET-UP This procedure will verify correct electrical operation and lead the service engineer through the generator calibration. This procedure is not intended to limit the service engineer's final assembly inspections.
MPX 525/625 Generator Revision A Service Adjustments Warning: Lethal voltages are present on the large filter capacitors in this unit. Exercise extreme caution when working near the long copper bus bars attached to the six large capacitors in the base of the power module. Always verify with a dc voltmeter that the capacitors are discharged before attempting any service in this area.
MPX 525/625 Generator Revision A Service Adjustments • Check tightness of high voltage cable locking rings Inspection of Power Module • Check that circuit boards are securely fastened in place and that board connectors are properly aligned • Check that all electrical components are mounted securely •...
Page 131
MPX 525/625 Generator Revision A Service Adjustments c. The +5 volt, +12 volt, and -12 volt LED's will light on the power module mother board 8. Connect the negative lead of a D.V.M. to the ground test point (TP12) on the mother board.
MPX 525/625 Generator Revision A Service Adjustments 15. Set the generator as follows: a. Mode - 3 point b. kV - 70kV c. Time – 40 milliseconds d. Focal spot - Large focus 16. Set the control to change “mA”. There are three commutating relays located on the inner rear wall of the power module, two on the rear panel and K1 on the inverter assembly.
Page 133
MPX 525/625 Generator Revision A Service Adjustments The installer must program default system configuration in the following manner: 1. Depress and hold the second button from the lower left corner of the display screen while turning the generator ON. 2. Enter the Dealer Password, using the buttons above the display to highlight the characters, and by adjusting their numeric values with the rotational knob.
MPX 525/625 Generator Revision A Service Adjustments Note: If your desired tube is not on the tube list, contact Del Medical Imaging Technical Support for assistance. X-Ray Tube Assemblies RAD 8 - 1.0 X 2.0 Varian RAD 13 - 1.0 X 2.0 RAD 14 - 0.6 X 1.2 RAD 16 - 1.0 X 2.0 RAD 21 - 0.6 X 1.2...
Page 135
MPX 525/625 Generator Revision A Service Adjustments Perform User Default Screen setup 1. Depress and hold first key from left on lower side of display window and turn generator power ON. The console will now display the default user setup screen.
MPX 525/625 Generator Revision A Service Adjustments MPX X-Ray Calibration Procedure This procedure is to be followed upon initial installation of the MPX 525/625. Warning: The main SCR capacitor bank (bottom of power module) contains a very high charge even after power is turned off. The charge is a fatal shock hazard. After power has been disconnected from the system, either by turning the line disconnect or the control console switch off, allow a minimum of five minutes for capacitor bank to discharge.
Page 137
MPX 525/625 Generator Revision A Service Adjustments Connect a Dynalyzer™, equipped with a digital display unit, in-line with the anode and cathode high voltage cables, between the high voltage transformer and the x - ray tube. If you do not have a digital display unit for the Dynalyzer™, all measurements must be made with a storage oscilloscope, connected to the Dynalyzer™...
MPX 525/625 Generator Revision A Service Adjustments Initial Test Exposure Warning: Lethal voltages are present on the large filter capacitors in this unit. Exercise extreme caution when working near the long copper bus bars attached to the large capacitors in the base of the power module. Always verify with a DC voltmeter that the capacitors are discharged before even attempting any service in this area.
MPX 525/625 Generator Revision A Service Adjustments during exposures, as dangerously high voltage can be present when there are improper connections. mAs measurements may also be made using the storage oscilloscope and calculating mAs as a product of tube current and time, as measured using the mA waveform.
MPX 525/625 Generator Revision A Service Adjustments Calibrate mA 1. With power off, place the mA/Rotor Board on the extender card 2. Turn power on. Set generator as follows: 3 Point Mode 84 kV 300 mA Large Focal Spot 100 mSec Time 3.
MPX 525/625 Generator Revision A Service Adjustments Figure 64 – Proper 300 mA Waveform from Dynalyzer™ 4. Turn the X-ray generator OFF. Leave the mA/Rotor board in place on the extender board Initial Setting of Preheat Pots 5. Turn the generator ON 6.
MPX 525/625 Generator Revision A Service Adjustments Figure 67 – Preheat Adjustment Set Too Low 9. Set the generator as follows: 3 point Mode Focal Spot Small 84 kV 150 mA 100 mSec Time 10. Make exposure and adjust R70 on mA Rotor (124-0095G1) PWB for a flat waveform 11.
MPX 525/625 Generator Revision A Service Adjustments 300 mA 500 mSec Time Indicated 150 mAs 4. Make exposures and adjust R2 on the mAs (124-0145G1) PWB for a reading of 150 mAs (+ 1 mAs) on the Dynalyzer™ Long Exposure mAs Calibration 5.
Page 145
MPX 525/625 Generator Revision A Service Adjustments 3 point Mode Tube Focal Spot Large 200 mA 100 mSec Time 4. Connect channel 1 to the anode BNC output of the Dynalyzer™ 5. Connect channel 2 to the cathode BNC output of the Dynalyzer™ 6.
MPX 525/625 Generator Revision A Service Adjustments 9. Turn power OFF and remove the kV Regulator Board from the extender card. Replace the kV Regulator Board in its original position in the card cage Calibration Verification This step verifies that the previous calibrations have been properly performed and that the generator is functioning correctly.
MPX 525/625 Generator Revision A Service Adjustments Focal Spot Small 84 kV 114 mAs 8. Make an exposure and verify that the kV and mA waveforms for the small focal spot are correct. The kV and mA waveforms should rise together and stabilize without any noticeable overshoots or undershoots.
Page 148
MPX 525/625 Generator Revision A Service Adjustments Warning: Observe proper radiation protection procedures because the following steps will produce x-ray emissions. 7. Select 250 mA and make an exposure. Observe the mA wave form on the oscilloscope. The waveform should achieve stabilization at +5 VDC. 8.
Page 150
MPX 525/625 Generator Revision A Service Adjustments Figure 71 – Preheat Set Too Low 11. Switch to the small focal spot. 12. Make another exposure and observe the waveform. If necessary, adjust R70 (Small Focus Preheat) on the mA/Rotor Board for an overall flat waveform Note: After adjusting for a flat waveform at this technique, the mA amplitude of the small focus should be less than or equal to the amplitude of the large focus.
MPX 525/625 Generator Revision A Service Adjustments kV Calibration 1. With power off, place the kV regulator board on the extender card 2. Connect a scope (2 channels) to kV+ (TP11) and kV- (TP10) with respect to DC return (TP-12) on the motherboard. Scale 1V = 10 kV 3.
MPX 525/625 Generator Revision A Service Adjustments mAs Adjustment - Alternate Method without Dynalyzer™ mAs has been pre-adjusted and verified at the factory. However, it may become necessary to test or adjust mAs in the field. Del Medical Imaging recommends using a Dynalyzer™...
MPX 525/625 Generator Revision A Service Adjustments 9. Remove the mAs meter from the circuit and reconnect the “MA+” wire to its original position in the terminal strip on top of the high voltage transformer. Ensure that this connection is secure. 10.
MPX 525/625 Generator Revision A Service Adjustments Additional Optional Inspections The following four calibrations are not normally required. Information is included in case they must be done. Calibrate High Tension Transformer Balance Connect Channel 2 of the scope to the Dynalyzer™ "C" BNC jack and connect Channel 1 of the scope to the Dynalyzer™...
MPX 525/625 Generator Revision A Service Adjustments 5 V / Division Channel 1 Vertical Scale 20 µSec / Division Horizontal Scale Single sweep Mode Channel 1 Trigger Negative Polarity 4. Set up the generator as follows: 2 point Mode Large Focal Spot 80 kV 31 mAs...
MPX 525/625 Generator Revision A Service Adjustments AEC Inspection and Calibration The AEC will be powered up by +/- 12 VDC from APR power module. AEC Cable Interconnections There are three cable connections (four with two ion chambers): 1. Generator Power Module to AEC Main chassis (power and signals) 2.
MPX 525/625 Generator Revision A Service Adjustments Test Point 4 Test Point 3 Test Point 2 Ground Test Point 9 Test Point 6 Test Point 8 Test Point 7 Test Point 15 Figure 74 - Test Points AEC COMMUNICATION LINK CHECKOUT This test will verify the correct selection of modes of operation, fields, densities, and desired kilovolts between the controller and the AEC device.
Page 159
MPX 525/625 Generator Revision A Service Adjustments 1. With the power "OFF" place a jumper on the AEC device "Main AEC Board" between the ground lead and TP6 2. Turn the generator "ON", select Manual, then select AEC operation 3. Move through the selections on the chart below, verify that the proper LED's illuminate Control Selection LED on Main AEC Board...
MPX 525/625 Generator Revision A Service Adjustments kV Select LED 17 LED 18 LED 19 LED 20 LED 21 LED 22 LED 23 40 – 41 42 – 43 44 – 45 46 – 47 48 – 49 50 – 51 52 –...
MPX 525/625 Generator Revision A Service Adjustments • Densitometer capable of measuring optical film densities from .5 to 2.5 +/- .05 • X-Ray film processor • Film and cassettes • Phantom - 10 pieces of 1" x 8" x 8" (2.54 cm x 20.32 cm x 20.32 cm) pieces acrylic OR flat bottom (no reinforcing bumps) plastic bucket to hold 12 inches (30.5 cm) of water •...
MPX 525/625 Generator Revision A Service Adjustments Figure 75 - Gain Adjustment Board Preliminary Gain Adjustments For the Table Image Receptor 1. Disconnect table ion chamber cable from main AEC board 2. Place a jumper from TP2 to TP15 (both on Main AEC Board) 3.
MPX 525/625 Generator Revision A Service Adjustments kV Compensation Adjustments Note: If this system is not equipped with a Bucky, the Exposure Enable Signal must be jumpered. The Bucky must be selected for AEC operation. For Wall Bucky: TB4 pin 2 to pin 4. For Table Bucky: TB5 pin 2 to pin 4.
Page 164
MPX 525/625 Generator Revision A Service Adjustments 5. If the measured density is not 1.2 (+/- .05), divide 1.2 by the density measured on the film and multiply the quotient by the mAs of that exposure. This number is the first approximation of the required exposure mAs for 72 kV to obtain a density of 1.2.
MPX 525/625 Generator Revision A Service Adjustments Secondary Gain Adjustments 1. Select the table image receptor, 72 kV, 55 mAs. Insert 6 inches (15.24 cm) of water (or plastic) into the field and collimator to within the attenuation material. Insert an empty cassette in the Bucky tray. Set S.I.D. to 40 inches (1 meter). Make an exposure.
MPX 525/625 Generator Revision A Schematics SCHEMATICS APR Interconnect ......034-0071 S Small Filament Resistance ..034-5071 S Control CPU Board...... 124-5045 S Power Supply Board....124-0108 S Prep / Expose PCB...... 124-5046 S Relay Control Board ....124-0152 S Inverter ........
Page 172
PROPRIETARY NOTICE Del Medical Imaging Corp SONALERT This information contained herein is confidential and U1-13 LCD-RST proprietary information of Del Global Technologies Corp, C17 .1uF U4 74HC373 PALCE22V10(PLCC) its subsidiaries and affiliates ("Del") and is a trade 29F010 PLCC28-SOC secret of Del which shall not be disclosed to any third party /RS232-SEL CLK/I0 I/O0...
Page 176
PROPRIETARY NOTICE Del Medical Imaging Corp This information contained herein is confidential and proprietary information of Del Global Technologies Corp, its subsidiaries and affiliates ("Del") and is a trade secret of Del which shall not be disclosed to any third party or copied without the express prior consent of Del.
Page 188
5VDC 5VDC 5VDC 1000 U15F U15E U15D SERIAL DATA CLOCK U 16A SERIAL DATA 4093 0.001UF 3300 MPS2222 74C14 74C14 74C14 1N4148 U 14 74C164 74C164 MEMORY CLOCK U15C C 14 U16B U 16D 4093 4093 0.01UF 74C14 12VDC MYLAR 0.001UF 74C373 74C373...
MPX 525/625 Generator Revision A Diagnostics DIAGNOSTICS Troubleshooting Topics for the MPX 525/625 Generator • No Ready Light • Ready Light is Active, but No Exposure Occurs • Consistent kV Fault • Intermittent kV Fault • Long Exposure Times with Light Films •...
MPX 525/625 Generator Revision A Diagnostics 4. Check for correct connections for main, common, and phase wires 5. Check for presence of the rotor current sense DC voltages during boost (anodes of CR2 & CR3 on the mA / Rotor PCB) 6.
MPX 525/625 Generator Revision A Diagnostics closed with a jumper wire. This jumps out the “Bucky in Motion” switch and enables the start of the exposure. Is the F1 fuse for the inverter DC supply open? Caution: Dangerously high voltages may be present on the filter capacitors after power to the generator is turned off.
MPX 525/625 Generator Revision A Diagnostics If the anode or cathode feedback voltages go outside of the window value of 1.3 VDC to 7.0 VDC (representing 13 to 70 kV for either the anode or cathode) one of the comparators will be tripped. If either comparator is tripped during an exposure attempt, the fault condition is latched and cannot be cleared until the unit is turned off and back on again.
Page 200
MPX 525/625 Generator Revision A Diagnostics • a defective X-ray tube • high voltage cables • faulty high-tension transformer 1. Connect 2 channels of an oscilloscope to kV+/- to TP-12 on the motherboard 2. Make an exposure. Based on a voltage interpretation of 1V=10kV, the anode and cathode waveforms should be equal in amplitude.
Page 201
MPX 525/625 Generator Revision A Diagnostics Check for a shorted commutation capacitor 1. Turn off power to the generator and allow 5-10 minutes for the inverter capacitors to discharge. Verify with a voltmeter that 0 VDC is measured across the inverter capacitors as well as on the commutation capacitors.
MPX 525/625 Generator Revision A Diagnostics 2. Place the mA/Rotor card on an extender card 3. Check outgoing filament reference signal by connecting a voltmeter or oscilloscope at U23, pin 1 to ground 4. Turn ON generator and prep the unit. The voltage should be approximately 5 VDC.
Page 203
MPX 525/625 Generator Revision A Diagnostics 7. If the waveform is not flat, adjust R72 as necessary. See Figure 2, ”Example of Pre-heat Wave-forms” 8. Select the Small focal spot and make another exposure. Adjust R70 as necessary Figure 2: Example of Preheat Waveforms 9.
Page 204
MPX 525/625 Generator Revision A Diagnostics 1. Turn off power to the generator and allow the inverter capacitors to discharge for 5-10 minutes Verify with a voltmeter that 0 VDC is measured across the inverter filter capacitors. Caution: Dangerously high voltages are present on the inverter filter capacitors whenever power is applied to the generator.
Page 205
MPX 525/625 Generator Revision A Diagnostics 4. Turn generator on. Select 60 kV and 10 mAs. Make an exposure and measure the off time between pulses at the very beginning of the exposure. It should be 140 microseconds 5. If necessary, adjust R65 on the board Note: If you are not quite sure about how to perform this adjustment it may be better to simply replace the board.
MPX 525/625 Generator Revision A Diagnostics To eliminate the HV Cables and X-Ray tube as the problem, try a No Load Test, as described below. No Load Test 1. Turn power to the generator off 2. Remove F3 on Power Supply PCB 3.
MPX 525/625 Generator Revision A Diagnostics Additional Problems and their Possible Causes Symptom Possible Cause Corrective Action Incorrect Filament drive – Check DC supply to Low Tube Current switching transistors, as well as switching LONG EXPOSURE waveform TIMES WITH LIGHT Possible feedback or FILMS reference voltage errors...
MPX 525/625 Generator Revision A Diagnostics Theory of Operation Communications scheme: (See illustration X1 for overview) The human-machine interface between the operator and the MPX 525/625 generator takes place at the operator’s console. The Console Display Board provides visible selection data to the operator through the Liquid Crystal Display.
Page 209
MPX 525/625 Generator Revision A Diagnostics Selection data for mAs, commutation capacitors, and AEC settings are streamed from the Data Board to the mAs Board (124-0145G1). AEC data is then streamed on through the mAs Board to the AEC Main Board. When an exposure is taking place, the mAs Board sends a stream of mAs pulses back up to the CPU Board in the Operator’s Console, which are used to provide an indication of the mAs of the last exposure.
Page 210
MPX 525/625 Generator Revision A Diagnostics The filament preheat reference voltage is sent to the Power Supply Board (124- 0108G1), where it is used to regulate the output of a feed-forward voltage regulator circuit, which provides the regulated DC filament voltage to the primary filament switching circuitry on the I/O Board.
Page 211
MPX 525/625 Generator Revision A Diagnostics mA feedback voltage is received from the mAs regulator board and used on this board to provide closed loop regulation of the actual tube current. Fault detection circuits on the kV Regulator and mA/Rotor boards are used to monitor the operation of the generator during the exposure and to send Fault signals to the Logic Board to stop the exposure if an error is detected.
Page 212
MPX 525/625 Generator Revision A Diagnostics On the kV Regulator Board, the feedback voltages are summed, filtered, and sent to a comparator that compares the feedback with the kV Reference voltage and is then used to gate the core frequency oscillator on or off, resulting in closed loop regulation of the high-voltage being delivered to the x-ray tube.
Page 213
MPX 525/625 Generator Revision A Diagnostics The mA/Rotor Board also has a filament protection circuit (U23C) to detect unusually high voltages coming from the filament power supply and to then initiate a filament fault signal that will disable the generator’s ability to generate an exposure. An additional circuit on the same board can be used to detect unusually long periods of filament operation at boost levels, and to initiate the same filament fault signal.
MPX 525/625 Generator Revision A Renewal Parts RENEWAL PARTS MPX 525/625 CONTROL, POWER MODULE, AND AEC DEVICE DESCRIPTION PART NUMBER Three phase 240/480 volt line match transformer 636-5010P1 Three phase 208 volt line match transformer 636-0070P1 Single-phase line match transformer to power Module 126-0214G2 Cable (#6 AWG) Three-phase line match transformer to power Module...
Page 221
MPX 525/625 Generator Revision A Renewal Parts DESCRIPTION PART NUMBER Diode Block 621-0015P3 Inverter Capacitor 611-0029P5 Inverter Fuse 646-0041P1 Single Tube High Voltage Transformer 110-0028G2 Control to Power Module Cable 126-5174G1 Control to AEC Cable 126-5178G1 AEC to Power Module Cable 126-0204G2 Commutation Select Relay 645-0033P1...
MPX 525/625 Generator Revision A Renewal Parts 110-0028G2 HIGH FREQUENCY TRANSFORMER DESCRIPTION PART NUMBER Tank 114-0066G2 Diala Oil AX Dielectric Oil (One gallon) 4463-0102 Capacitor Board 124-0034G2 Rectifier 621-0017P1 High Tension Transformer 112-0098G1 Filament Transformer 112-0118G1 Spark Gap Board 124-0046G1 Vertical Board 124-0035G1 Voltage Divider Resistor (36 Meg Ohms)
MPX 525/625 Generator Revision A Periodic Maintenance PERIODIC MAINTENANCE General Notes The following routine maintenance should be performed 30 days after installation and semi-annually thereafter. This inspection must be carried out by trained service personnel familiar with the equipment and maintenance procedures. Warning: The main SCR capacitor bank (bottom of power module) contains a very high charge when power is applied.
Page 224
MPX 525/625 Generator Revision A Periodic Maintenance 9. Inspect electromechanical contactors and relays for pitting, poor contact, loose or missing parts. Replace if necessary 10. High Voltage Transformer • Check transformer oil level. Proper oil level should be within 1/4" below the bottom side of the cover.
MPX 525/625 Generator Revision A Index INDEX Adjustment Pot Identifications ................120 AEC ........................6, 17 cable interconnections ..................149 chassis modifications ..................97 communication link checkout ................150 control box ...................... 97 device field calibration procedure..............152 exposure termination faults ................15 inspection and calibration................
Page 228
MPX 525/625 Generator Revision A Index Data Board ......................118 Density ........................13 Diagnostics ......................161 Dimensions......................19 Electrical Grounding ....................2 Equipment safety ........................2 Exposure Interlocks ....................99 Fault indications ......................14 Features and Benefits ....................3 Filament Connections to High Tension Transformer ..........99 Floor Attachment Pattern..................
Page 230
MPX 525/625 Generator Revision A Index module front panel ..................107 module inner rear panel .................. 109 module top view ....................108 on/off procedure ....................7 requirements ....................... 4 Power Module....................99, 106 Power Supply Board....................111 Preamplifier Adjustment ..................158 Preheat adjustment set too high................
Page 231
MPX 525/625 Generator Revision A Index Test Equipment Required................121, 128 Test Exposure ....................... 130 Test Points ......................150 Theory ........................173 Tube .......................... 2 Tube Seasoning Procedure ..................14 User Service and Maintenance................23 Wall Image Receptor ..................... 154 connections ..................... 100 Weights And Dimensions ..................
Need help?
Do you have a question about the X-Ray MPX 525 and is the answer not in the manual?
Questions and answers