Hypertherm HD4070 Rev.1 - Manual (Page 164)

HyPerformance HD4070 Instruction Manual 5-1
Section 5
MAINTENANCE
In this section:
Introduction ...............................................................................................................................................................5-2
Routine maintenance ................................................................................................................................................5-2
HD4070 system description ......................................................................................................................................5-3
Control and signal cables.................................................................................................................................5-3
Power supply coolant system servicing ....................................................................................................................5-4
Torch coolant draining...............................................................................................................................................5-6
Power supply coolant draining ..................................................................................................................................5-6
Coolant system filter .................................................................................................................................................5-7
Filter replacement ............................................................................................................................................5-7
Coolant flow test procedure ......................................................................................................................................5-8
HD4070 process sequence ......................................................................................................................................5-9
Initial checks............................................................................................................................................................5-11
Power measurement ..............................................................................................................................................5-12
Service display screens ..........................................................................................................................................5-13
Error codes .............................................................................................................................................................5-14
Error code troubleshooting – 1 of 4................................................................................................................5-15
Error code troubleshooting – 2 of 4................................................................................................................5-16
Error code troubleshooting – 3 of 4................................................................................................................5-17
Error code troubleshooting – 4 of 4................................................................................................................5-18
Electrical PC boards and power supplies ...............................................................................................................5-19
PC-104 DC power: pin designators................................................................................................................5-20
PC-104 test procedure ...................................................................................................................................5-20
Plasma interface board PCB5 status indicators.............................................................................................5-22
Breakout board PCB6 status indicators .........................................................................................................5-23
Control board PCB3 status indicators ............................................................................................................5-27
Power distribution board PCB4 status indicators ...........................................................................................5-28
Start-circuit assembly board PCB2 ................................................................................................................5-29
Pilot arc current levels....................................................................................................................................5-29
Start-circuit functional schematic ...................................................................................................................5-30
Start-circuit troubleshooting ...........................................................................................................................5-30
Gas console relay board PCB1 and PCB3 – LED description lists................................................................5-31
PCB1 and PCB3 LED sequences – O
2
cutting ..............................................................................................5-32
PCB1 and PCB3 LED sequences – H35/N
2
cutting .......................................................................................5-33
PCB1 and PCB3 LED sequences – H5/N
2
marking.......................................................................................5-34
PCB1 and PCB3 LED sequences – N
2
/N
2
marking .......................................................................................5-35
Gas console control board PCB2 ...........................................................................................................................5-36
Leak test procedure ................................................................................................................................................5-37
Setting regulator pressure ......................................................................................................................................5-37
Chopper module test procedure .............................................................................................................................5-38
Phase loss detection board PCB1 status indicators and operation ........................................................................5-40
THC routine maintenance .......................................................................................................................................5-41
X-Y lifter sealing band – replace ....................................................................................................................5-41
THC motor drive board ...........................................................................................................................................5-45
THC power supply ..................................................................................................................................................5-46
THC control board ..................................................................................................................................................5-47
Preventive maintenance ........................................................................................................................................5-49