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TROUBLESHOOTING & REPAIR
F-8 F-8
CLASSIC I
Observe Safety Guidelines
TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.
Call 1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
The actual welding current is much
greater than is indicated on the
dials.
1. Check the main DC generator
brushes for good commutation
and alignment. Contact the
Lincoln Electric Service Dept.
1-800-833-9353 (WELD).
1. The engine operating speed
may be too high. If necessary
perform the Engine Throttle
Adjustment Test.
2. While the machine is loaded,
check the series coils for signs
of “arcing.” This condition could
point to shorted turns in the
series coils.
3. Perform the DC Exciter Test.
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