Hypertherm HPR130

6
MAINTENANCE
5-2 HPR130 Manual Gas Instruction Manual
Test 6 – bucket test at the pump............................................................................................................................................5-33
Test 7 – bypass the check valve .............................................................................................................................................5-33
Pump and motor troubleshooting..............................................................................................................................................5-34
Testing the flow switch.................................................................................................................................................................5-35
Gas leak tests...........................................................................................................................................................................................5-36
Power supply control board PCB3......................................................................................................................................................5-37
Power supply power distribution board PCB2.................................................................................................................................5-38
Start circuit PCB1...................................................................................................................................................................................5-39
Operation ........................................................................................................................................................................................5-40
Start circuit functional schematic ..............................................................................................................................................5-40
Start circuit troubleshooting .......................................................................................................................................................5-40
Pilot arc current levels..................................................................................................................................................................5-41
Gas console control board PCB2.......................................................................................................................................................5-42
Gas console power distribution board PCB1 ..................................................................................................................................5-43
Gas console AC valve-driver board PCB3........................................................................................................................................5-44
Chopper tests...........................................................................................................................................................................................5-45
Phase-loss detection test.......................................................................................................................................................................5-47
Torch lead test..........................................................................................................................................................................................5-48
Preventive maintenance .........................................................................................................................................................................5-49