Lincoln Electric WIRE-MATIC 255 SVM 119-A Service Manual page 60

F-9
TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
The welding arc is variable and slug-
gish.
The arc striking is poor.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-
383-2531 or 1-800-833-9353
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
WELDING PROBLEMS
1. Check the welding cable con-
nections for loose or faulty con-
nections.
2. Make sure the wire feed speed,
voltage, and shielding gas are
correct for the process being
used.
1. Check the welding cable con-
nections for loose or faulty con-
nections.
2. Make sure the wire feed speed,
voltage, and shielding gas are
correct for the process being
used.
CAUTION
WIRE-MATIC 255
RECOMMENDED
COURSE OF ACTION
1. Perform the Output Rectifier
Bridge Test.
2. The control board may be faulty.
Replace.
1. The control board may be faulty.
Replace.
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