Do System Tests to Identify Defective Components
11 2 810430 Troubleshooting Guide Powermax65/85/105 SYNC
Test 9 – Solenoid valve electronic regulator
If you get a 3-20-n fault code, do this test to identify if the solenoid valve electronic regulator or
power PCB is possibly defective.
Do a test of the solenoid valve with the gas supply disconnected
1. Set the power switch to OFF (O), and disconnect the power cord from the power source.
2. Remove the plasma power supply cover.
3. Remove the component barrier.
4. Disconnect the gas supply.
5. Set the power switch to ON (I). Does the solenoid valve make an audible clicking sound?
If yes, examine the gas hoses that connect to the solenoid valve assembly. Refer to
Figure 28. If the hoses are twisted, kinked, or have other damage, replace them. Reconnect
the gas supply. Set the power switch to ON (I), and fire the torch.
If no, continue with the next step.
Figure 28 – Gas hoses connected to the solenoid valve assembly
WARNING
ELECTRIC SHOCK CAN KILL
The plasma power supply contains dangerous electric voltages that can seriously injure or
kill you.
Use extreme caution if you do service or maintenance work on a plasma power supply
when it is connected to an electric power source and the outer cover or panels are
removed.
To Next Page
Loading...
Need help?
General
