Corrective action
1. Use the CNC or XPR web interface to select Test Cutflow to start the gas flow.
2. Make sure that the gas inlet pressures are in the permitted range.
Refer to Process-gas requirements for all gas connect consoles on page 48.
3. If the gas inlet pressure is not in the permitted range, adjust it.
a. Use a 2-stage regulator that can supply the necessary gas flow and can keep consistent gas
pressure with high-pressure gas cylinders.
b. Look at the diagnostic code history for pressure-related codes that can identify where to look
for flow or pressure problems.
c. If you identify a code for a pressure transducer (P1 or P2), interchange the transducers.
d. Identify if the diagnostic code aligns with the transducer change.
e. Replace the bad transducer if necessary.
For instructions, refer to "Replace a pressure transducer" in the XPR Replacement Parts
Procedures Field Service Bulletin (809970).
4. If your cutting system has an OptiMix gas connect console, refer to Troubleshooting for process-gas
inlet pressure faults in the TorchConnect console for OptiMix systems on page 354.
5. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for a pilot relay fault
Diagnostic code 777
Diagnostic code 777 occurs when there is a fault related to the pilot relay.
Symptoms
Code Symptoms XPR models XPR action Code cancels with...
777 The pilot-relay driver finds an overcurrent condition. All models None • Set process
• Remote on-off
Diagnostics and Troubleshooting
8
377811530Instruction ManualXPR460
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