Lincoln Electric RANGER 3PHASE SVM207-A Service Manual page 45

F-7
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Engine will not go to high idle when
attempting to weld or when the aux-
iliary power is loaded. Welding out-
put and auxiliary power output is
normal when Idler Switch is in the
"HIGH" position.
Engine will not go to high idle when
attempting to weld. Welding output
is normal when Idler Switch is in
"HIGH" position. Automatic idle
function works properly when the
auxiliary power is loaded.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
TROUBLESHOOTING AND REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
ENGINE PROBLEMS
1. Automatic idler may not function
if the auxiliary power is loaded to
less than 100 Watts.
1. Make sure the welding cables
and connections are tight.
CAUTION
RANGER® 3 PHASE
RECOMMENDED
COURSE OF ACTION
1. Check that the leads are cor-
rectly wrapped through the
Toroid. See Wiring Diagram.
2. Perform the Toroid Test.
3. The Printed Circuit Board may
be faulty. Replace.
1. Check for broken or faulty con-
nections in the sensing lead
(#254). Make sure the connec-
tions are tight at the Output
Rectifier and the
Switch. See the
Diagram.
2. Make sure the #254 lead is
wrapped properly through the
Toroid. See the
Diagram.
F-7
Polarity
Wiring
Wiring