Troubleshooting - ESAB A6 TFD1 Operating Manual

TROUBLESHOOTING

Equipment
Manual for control box PEG1, order no. 443 392.
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Manual for motor with gear A6 VEC, order no. 443 393.
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Check
that the welding power supply is connected for the correct mains
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voltage
that all three phases are giving the correct voltage
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(phase sequence not important)
that the welding cables and connections to them are not damaged
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that the controls are in the right positions
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that the mains supply is disconnected before starting repairs
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POSSIBLE FAULTS
1. Symptom Current and voltage show fluctuating values on digital display.
Cause 1.1 Contact jaws or contact tip are worn or wrong size.
Action Replace contact jaws or contact tip.
Cause 1.2 Pressure on feed rollers is inadequate.
Action Increase pressure on feed rollers.
2. Symptom Wire feed is irregular.
Cause 2.1 Pressure on feed rollers is incorrectly adjusted.
Action Adjust pressure on feed rollers.
Cause 2.2 Feed rollers wrong size.
Action Change feed rollers.
Cause 2.3 Groove in feed rollers is worn.
Action Replace feed rollers.
3. Symptom Welding cables overheat.
Cause 3.1 Poor electrical connection.
Action Clean and tighten all electrical connections.
Cause 3.2 Welding cables too small.
Action Increase dimension of cables or use parallel cables.
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TROUBLESHOOTING