Engine will not idle down to low speed, Troubleshooting & repair, Caution – Lincoln Electric WELDANPOWER SVM 113-A User Manual
Page 47
TROUBLESHOOTING & REPAIR
F-9
F-9
WELDANPOWER 125
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
216-383-2531 or 1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
ENGINE PROBLEMS
Engine will NOT idle down to low
speed.
1. Make sure the idler control
switch is in the “AUTO” idle
position.
2. Remove any external load on
the welder terminals or auxiliary
power receptacles.
1. With the idler control switch in
the “AUTO” position and all
external loads removed, check
for 12VDC at leads #208 and
#209. See Wiring Diagram. If
the 12VDC is present and the
idler solenoid does not activate,
the solenoid may be faulty.
Replace.
2. If the 12VDC is NOT present at
leads #208 and #209, perform
the Main Stator Winding Test.
3. Check leads #15A (at stator) to
#16 (at idler P.C. board) for con-
tinuity (zero ohms). Check
leads #9A (at stator) to #9B (at
idler P.C. board) for continuity
(zero ohms). See Wiring
Diagram.
4. The idler P.C. board may be
faulty. Replace.