Lincoln Electric RANGER 8 SVM107-B Service Manual page 48

F-8
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
No DC welding output. AC welding
output and auxiliary power is nor-
mal.
No AC welding output. DC welding
output and auxiliary power is nor-
mal.
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 (WELD).
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Make sure the Polarity Switch is
in the proper position and is
"seated" correctly.
2. Make sure the electrode and
polarity are correct for the
process being used.
1. Make sure the Polarity Switch is
in the proper position and is
"seated" correctly.
2. Make sure the electrode is cor-
rect for the process being used.
3. Make sure the welding cables
are not coiled or too long.
CAUTION
RANGER 8
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Perform the Output Bridge Test.
2. Check the Choke (L1), the
Polarity Switch (S2) and associ-
ated wires for loose or faulty
connections. Check the choke
winding for continuity and test
to be sure it is NOT grounded
the choke iron.
1. Check the operation of the
Polarity Switch (S2). Also check
the associated wires for loose
or faulty connections.
Wiring Diagram.
2. Check for continuity from lead
"S2" to lead "E" located in the
main stator. See Wiring Dia-
gram.
F-8
See