TROUBLESHOOTING
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TROUBLESHOOTING
Equipment
S
Manual for control box PEG1, order no. 443 392.
S
Manual for motor with gear A6 VEC, order no. 443 393.
Check
S
that the welding power supply is connected for the correct mains
voltage
S
that all three phases are giving the correct voltage
(phase sequence not important)
S
that the welding cables and connections to them are not damaged
S
that the controls are in the right positions
S
that the mains supply is disconnected before starting repairs
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.