ESAB POWERCUT-1250 Guida alla Risoluzione dei Problemi Scaricare il pdf (Pagina 11)

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F. High Frequency and Pilot Arc are on but Main Arc does not transfer.

1. Make sure work clamp is connected to work material.

2. Check the torch. Replace consumables if necessary.

G. Poor Cutting Performance.

1. Check air supply regulator . It should be adjusted to 80 psig (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 open circuit voltage. See E.3 above.

5. Check the output. Use a calibrated current probe capable of measuring 100 amps in the

presence of high frequency.

H. Air does not shut o.

1. Check air test, the gas solenoid valve is energized when the switch is in the “on” position.

2. Does air ow stop when the torch switch is unplugged? If yes, check and repair the torch. If

not, send unit to an Authorized Repair Station for repair.

a. Check voltage to solenoid coil, if present when torch switch is unplugged, replace PCB1.

If voltage is “0”, replace solenoid valve.

I. Main arc is dicult 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 at least 85 psig (5.7 bars).

4. Torch connections must be tight.

5. Work cable and clamp must be in good condition and must make a good electrical connec-

tion to the material to be cut.

6. If above items check OK , the problem is internal. Send unit to an Authorized Repair Station

for repair.

a. Missing or weak pilot arc. Check pilot arc fuse, open circuit voltage and pilot arc wiring.

b. Inoperative Start-up Board (PCB-6).

SECTION 5 TROUBLESHOOTING

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ESAB POWERCUT-1250 Guida alla Risoluzione dei Problemi Pagina 11