ESAB ESP-101 Manuel D'instruction page 283

sectIoN 6
h. poor cutting performance.
1. Check air supply regulator . It should be adjusted to 70 - 80 psig (4.8 - 5.5 bars).
2. The air supplied to the torch should be free of oil and water.
3. Make sure the consumables in the torch are acceptable.
4. Check the output. Use a calibrated current probe capable of measuring 200 amps.
I. Air does not shut off.
1. Check air test, the gas solenoid valve is energized when the switch is in the "on" position.
a. Check voltage to solenoid coil, if present when CNC cable is unplugged, replace PCB2.
b. Turn off primary power to the power source. If gas continues to flow, replace the gas solenoid.
1) Turn on primary power and check the status of the Fault light. If the Fault light is on continuously and
gas is on continuously, turn off primary power and inspect the torch for proper assembly of the elec-
trode and nozzle. Press firmly on the electrode and verify that it retracts when pressed, and returns
forward when released.
2) Reassemble the electrode and nozzle and turn on primary power. After approximately two seconds the
gas should come on briefly then go off. If the Fault light comes on continuously and gas remains off,
check for defective torch trigger or shorted torch trigger leads.
j. main arc is difficult to start.
1. The most common reason is worn or missing consumables. Check and replace if necessary.
2. Input air must be clean and dry.
3. Input air pressure must be between 70 - 80 psig (4.8 - 5.5 bars).
4. Torch connections must be tight.
5. Work cable and clamp must be in good condition and must make a good electrical connection to the material
to be cut.
6. If above items check OK , the problem may be internal.
send unit to an Authorized Repair station for repair.
k. No pilot arc or main arc established if you depress torch switch or send start signal.
1. Check Help Code display.
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