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SYMPTOM CHECK
The “MALFUNCTION” LED is lit. 1.
The FAULT circuit monitors the torch to see if it
is
shorted as well as internal machine failures.
2. Check the torch consumables to see if they are
melted together or are simply touching each
other. Tighten, clean or replace. See
“Suggestions for Extra Utility from the PRO-CUT
System”.
3. Check the torch cable to see if it is cut or
punctured. Replace.
4. Turn off the machine and turn it back on. If the
“FAULT” LED will not stay off when you
try to cut again and there is no problem with the
torch, then something has failed in the machine
and the machine should not be left on.
4a. Check electrode to pilot for short.
4b. Check the SCR board. Replace if bad.
4c. Check operation of contactors. Replace if
bad.
5. Replace Control PC board.
Alternating “AIR/MALFUNCTION” LED lights 1. Replace Control PC board.
Air pressure cannot be set to 60 psi (414 kPa) or the 1. Watch the pressure gauge during pilot mode.
machine cuts poorly through thick sections. The air pressure should start as 60 psi (414 kPa)
and be reduced significantly when the trigger is
pulled. If not, then there is a problem with the
solenoid assembly.