Troubleshooting & repair, Caution – Lincoln Electric CLASSICII SVM125-A User Manual
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TROUBLESHOOTING & REPAIR
F-8
F-8
CLASSIC II
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
216-383-2531 or 1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
The engine will not return to low
idle when the welding and auxiliary
loads are removed.
1. Make sure the Idler Control
switch is set to the Auto position.
2. Make sure both welding and
auxiliary loads are removed.
3. Check for mechanical restric-
tions in the idle and throttle link-
age.
1. Check the Idler Control switch
and associated leads for loose
or faulty connections. See the
Wiring Diagram.
2. Check the reed switch CR2. It
may be stuck closed. Replace if
necessary.
3. Check for loose or faulty con-
nections at the Idler PC board.
4.
Make sure lead #60D is
grounded correctly.
5. Perform the
6. The Idler PC board may be
faulty. Replace.