The welding arc is variable or “hunting, Troubleshooting and repair, Caution – Lincoln Electric SVM143-A User Manual
Page 59
F-15
TROUBLESHOOTING AND REPAIR
F-15
DH-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The welding arc is variable or
“hunting”.
Poor arc striking with sticking or
“blast-offs”. The bead may be nar-
row, ropey and have porosity.
1. The electrode or work cables
may have faulty connections.
2. Make sure the welding proce-
dures are correct for be process
being used.
3. Make sure the DIP switches on
the control board are set
correctly.
4. The gas shielding may not be
sufficient or contaminated.
5. The power source may be
faulty.
1. Make sure the welding proce-
dures are correct for the
process being used.
2. The gas shielding may not be
sufficient or contaminated.
3. Make sure the set screw in the
connector block is in place and
tightened against the liner
bushing.
4. Weld procedures and/or para-
meters incorrect for process
being performed.
5. The power source may be
faulty.
1. If the drive rolls are turning
Drive Motor Test and Tach
Adjustment and Feedback
Test.
1. If the drive rolls are turning
Drive Motor Test and Tach
Adjustment and Feedback
Test.
2. Make certain weld procedures
and parameters are correct for
the process being performed.
WELDING PROBLEMS
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.
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