Install the torch in the torch receptacle

Make sure that the torch is correctly installed in the torch receptacle.

Figure 1. Torch receptacle connections
This image shows the connectors between the torch and the torch receptacle.
1 Pilot arc
2 Coolant return
3 Ohmic
4 Shield gas
5 Coolant supply
6 Plasma gas
  1. Apply a thin layer of silicone lubricant to the four O-rings that are in the torch body.

    Do not apply silicone to the brass electrical connectors.

    Make sure that the O-rings are shiny. However, too much lubricant can prevent gas flow. Remove unwanted lubricant if found.

    This image shows where to apply a thin layer of silicone lubricant to the O-rings that are in the torch body.
  2. Install the torch in the torch receptacle:
    1. Turn the torch body up with light force until you feel the torch body engage into position in the torch receptacle.
    2. Use your hands to tighten the torch-coupler nut until the coupler nut cannot turn.

      Do not use tools to tighten the torch-coupler nut.

  3. Make sure that the torch body is fully installed in the torch receptacle and that there is no space between the torch body and torch receptacle.
This image shows examples of incorrect (left) and correct (right) torch installation in the torch receptacle.