The plasma arc makes sputtering and hissing sounds

There is a problem with the air filter element, or it is necessary to clean the input gas supply. There can also be a problem with the Hypertherm® cartridge.

The air filter element is dirty

  • Replace the air filter element that is in the filter bowl at the rear of the plasma power supply.

There is moisture in the gas supply line

  1. Examine the gas supply line moisture.
  2. Clean or replace external filtration components as necessary.
  3. Flush the gas supply line with nitrogen to remove oil and moisture.
  4. If necessary, add additional, external filtration that is applicable for the work environment.

There is a problem with the cartridge

  1. Make sure that the Hypertherm cartridge is not too loose or too tight on the torch.
  2. Examine the Hypertherm cartridge for wear or damage, and replace it if necessary.