Troubleshooting procedures and sequence
This list of resources will help direct you to troubleshooting steps.
When doing the troubleshooting procedures, refer to:
- Safety and Compliance Manual (80669C) for detailed safety information
- System diagrams for electrical schematics
- Replacement parts and accessories for plasma power supply components
Troubleshooting sequence:
- Power OFF (O) and disconnected
- Do an external inspection.
- Do an internal inspection.
- Do an initial resistance check.
- Power ON (I).
- Refer to Fault icons and fault codes and Troubleshooting for common problems to help with troubleshooting.
| Warning | |
|---|---|
  | DANGEROUS VOLTAGES CAN CAUSE INJURY OR DEATH
Dangerous voltages in the plasma power supply and at the torch nozzle
can cause serious injury or death.
Use extreme caution when working near live electrical
circuits.
Live voltages can stay on the DC bus for 30 seconds or more after you
disconnect the input power. Let bus voltages dissipate before you start tests.
While testing, do not touch the nozzle at the end of the torch.
|
After you locate and repair the problem, do a test of the plasma power supply for correct operation.
All troubleshooting tests must be done by a qualified service technician. Wear the proper personal protective equipment, and use approved tools and measurement equipment.
Before you purchase a major replacement component, make sure that you have correctly identified the problem with help from Hypertherm® Technical Service or the nearest Hypertherm repair facility.