Troubleshooting & repair, Caution – Lincoln Electric CLASSIC I SVM134-A User Manual
Page 53
TROUBLESHOOTING & REPAIR
F-9
F-9
CLASSIC I
TROUBLESHOOTING GUIDE
Observe Safety Guidelines
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
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” posi-
tion.
2. Make sure both welding and
auxiliary loads are removed.
3. Check for mechanical restric-
tions in the idler and throttle link-
age.
4. While the engine is running, if
the oil pressure light is NOT lit,
the oil pressure switch may be
faulty. See the Wiring Diagram.
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. Perform the Idler Solenoid
4. Check for loose or faulty con-
nections at the idler PC board.
5. The idler PC board may be
faulty. Replace.