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E-4
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
Arc is unstable – Poor starting
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.
TROUBLESHOOTING
POSSIBLE AREAS OF
MISADJUSTMENT(S)
WELDING PROBLEMS
1. Check for correct input voltage
to machine – 115vac.
2. Check for proper electrode
polarity for process.
3. Check gun tip for wear or dam-
age and proper size – Replace.
4. Check for proper gas and flow
rate for process. (For MIG only.)
5. Check work cable for loose or
faulty connections.
6. Check gun for damage or
breaks.
7. Check for proper drive roll orien-
tation and alignment.
8. Check liner for proper size.
CAUTION
PRO 100
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
E-4
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