Troubleshooting for shield gas inlet pressure in the TorchConnect console

Diagnostic codes 702 – 705

When diagnostic codes 702 – 705 occur, do this troubleshooting procedure to fix problems with the inlet pressure inside the TorchConnect™ console. Make sure that gas inlet pressures are in the permitted range, and examine hoses and fittings for damage or kinks.

Symptoms

Code Symptoms XPR® models XPR action Code cancels with...
702 For a minimum of 200 milliseconds, the nitrogen (N2) inlet pressure (P4) in the TorchConnect console is less than 5.52 bar (80 psi) or more than 9.31 bar (135 psi). All models None
  • Set process
  • Remote on-off
703 For a minimum of 200 milliseconds, the oxygen (O2) inlet gas pressure (P4) in the TorchConnect console is less than 5.52 bar (80 psi) or more than 9.31 bar (135 psi).
704 For a minimum of 200 milliseconds, the air inlet pressure (P4) in the TorchConnect console is less than 5.52 bar (80 psi) or more than 9.31 bar (135 psi).
705 For a minimum of 200 milliseconds, the argon (Ar) inlet pressure (P4) in the TorchConnect console is less than 5.52 bar (80 psi) or more than 9.31 bar (135 psi).

Corrective action

  1. Look at the Computer Numerical Control (CNC) screen or XPR web interface to identify the inlet pressure inside the TorchConnect console.
    Look at:
    • The N2 inlet pressure (P4) for code 702
    • The O2 inlet pressure (P4) for code 703
    • The air inlet pressure (P4) for code 704
    • The Ar inlet pressure (P4) for code 705
  2. Make sure that the gas inlet pressures inside the TorchConnect console are in the permitted range that is specified in Permitted inlet pressures to the console.
  3. Use the regulators to increase or decrease the inlet pressure.
  4. If the pressure stays too low, examine the gas hoses and gas inlet fittings for:
    • Damage or kinks that can decrease flow
    • Leaks that can decrease pressure
  5. Replace the hoses if you find damage or kinks.
  6. Reposition the hoses if you find fixable kinks.
  7. Replace fittings that have damage.
  8. Tighten loose connections if found.
  9. If you cannot find or correct the problem, speak to your cutting machine supplier or regional Hypertherm® Technical Service team.