Hypertherm HPR260 Manual Gas Preventive Maintenance Program Rev.5 - Manual (Page 146)

MAINTENANCE
5-2 HPR260 Auto 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 .....................................................................................................................................................5-38
Power supply power distribution board PCB2.................................................................................................................................5-39
Start circuit PCB1...................................................................................................................................................................................5-40
Operation ........................................................................................................................................................................................5-40
Start circuit functional schematic ..............................................................................................................................................5-40
Start circuit troubleshooting .......................................................................................................................................................5-40
Pilot arc current levels ..................................................................................................................................................................5-42
Selection console control board PCB2 .............................................................................................................................................5-43
Selection console power distribution board PCB1.........................................................................................................................5-44
Selection console AC valve-driver board PCB3 ..............................................................................................................................5-45
Metering console control board PCB2 ..............................................................................................................................................5-46
Metering console power distribution board PCB1 ..........................................................................................................................5-47
Chopper tests...........................................................................................................................................................................................5-48
Phase-loss detection test ......................................................................................................................................................................5-50
Torch lead test ..........................................................................................................................................................................................5-51
Preventive maintenance..........................................................................................................................................................................5-52
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