Install the torch into the torch receptacle

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

Figure 1. Torch receptacle connections
This image shows the torch receptacle with callouts for connections.
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 inside of 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 the silicone lubrication points.
  2. Install the torch in the torch receptacle:
    1. Turn the torch body up with light force until you feel it engage into position in the receptacle.
    2. Use your hands to tighten the torch-coupler nut until the coupler nut cannot turn.

      Do not use tools.

  3. Make sure that the torch body is fully installed in the torch receptacle.

Make sure that there is no space between the torch body and torch receptacle.

This image shows correct and incorrect torch installation.