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SYMPTOM CHECK
No LED’s light when the power switch is turned on. 1. Check the input power to be sure it is on.
2. Check the power line fuses and machine
connection.
3. Replace line switch.
The “MACHINE ON” LED is lit, but there is no 1. Check the “SAFETY” LED. If it is lit, check the
response when the trigger is pulled. torch consumables and press the “SAFETY
RESET” button.
2. Check the air supply to the machine. If the air
does not flow, the machine will not start.
3. Check the operation of the air solenoid by
switching the machine to “PURGE”. If the
pressure is sufficient, the air should begin to
flow and the “AIR PRESSURE” LED should
turn on. Return to “RUN” mode. If air does not
flow, check the solenoid by applying 115 VAC to
its input leads. If it is not bad, replace PC board.
4. Low air pressure also results in a “no start”
condition. “AIR PRESSURE” LED must be lit
when air is flowing.
5. 12 seconds, or more, of postflow time has
elapsed and a double trigger pull is required to
start the pilot arc. The second trigger pull must
follow the first within 1 second to start the pilot
arc.
