Corrective action
1. Examine the pump solid-state relay for damage.
2. Replace components if you find damage or excess wear.
3. Make sure that you have the most recent XPR firmware.
You can log in into the Xnet at www.hypertherm.com to download it.
4. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for gas inlet pressure faults
Diagnostic codes 768 – 771
Diagnostic codes 768 – 771 occur when gas inlet pressure is less than the permitted pressure level.
Use extreme caution if you do diagnosis or maintenance tasks when the plasma power supply
is connected to electricity and the panels on the plasma power supply are removed.
Decreases in gas pressure are more likely to occur if the supply gas hoses are long. For more information,
refer to:
■
Configuration with Core gas connect consoles on page 87
■
Configuration with CorePlus gas connect consoles on page 89
■
Configuration with VWI or OptiMix gas connect consoles on page 90
Symptoms
Code Symptoms XPR models XPR action Code cancels with...
768 Line A O
2
inlet pressure (P2) is less than 5.52 bar
(80 psi) or more than 8.62 bar (125 psi).
769 Line B Argon inlet pressure (P1) is less than 5.52
bar (80 psi) or more than 8.62 bar (125 psi).
770 Line B N
2
inlet pressure (P1) is less than 5.52 bar
(80 psi) or more than 8.62 bar (125 psi).
771 Line A Air inlet pressure (P2) is less than 5.52 bar
(80 psi) or more than 8.62 bar (125 psi).
All models None • Set process
• Remote on-off
Diagnostics and Troubleshooting
8
376
811530 Instruction Manual XPR460
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