Do System Tests to Identify Defective Components
108 810430 Troubleshooting Guide Powermax65/85/105 SYNC
Test 8 – Torch cap switch
If a new Hypertherm cartridge does not cause the 0-50-0 fault to go away, there can be a problem
with the torch or with the plasma power supply.
Examine the torch and torch lead
1. Disconnect the torch from the plasma power supply.
2. Make sure that a cartridge is correctly installed on the torch.
The cartridge must not be too loose or too tight.
3. Make sure that the torch is set to the green “ready to fire” ( )
position.
4. Measure the resistance between pin 5 and pin 7 in the torch
connector. Refer to Figure 26 on page 109. Is the resistance
very low?
If yes, continue with the next step.
If no, the cap-sensor switch in the torch is open. Continue
with step 7.
5. Set the torch to the yellow lock (X) position.
6. Measure the resistance between pin 5 and pin 7 in the torch
connector again. Is the resistance open?
If yes, continue with Examine the plasma power supply on
page 110.
If no, the cap-sensor switch circuit is closed. Continue with
the next step.