The plasma arc stopped while cutting, but starts when you fire the torch again

There is a problem with the Hypertherm® cartridge, the cut height, the air filter element, or the input gas pressure.

The Hypertherm cartridge is worn or has damage

  • Replace the Hypertherm cartridge.

The arc is stretched too far

  1. Decrease the length of the arc stretch when you cut.
  2. When you cut with a hand torch, drag the torch on the workpiece when possible.

The filter element in the air filter is dirty

  • Replace the air filter element.

The gas pressure is too low or too high

  1. If you manually adjusted the gas pressure before the problem occurred, set the gas pressure back to the default setting.
  2. For optimum system performance, make sure that the inlet gas pressure stays between 7.6 bar – 8.3 bar (110 psi – 120 psi) while gas is flowing.

    Never use more than the maximum gas pressure of 9.3 bar (135 psi).

  3. Adjust the gas pressure on the plasma power supply manually, as necessary.
  4. Make sure that the incoming gas supply hose has an internal diameter that is ≥ 9.5 mm (3/8 inch).
  5. Examine the gas filtration system for signs of contaminants that are possibly causing interference with system performance.