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TROUBLESHOOTING & REPAIR
F-18 F-18
RANGER 9 RANGER 9
TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
The output contactor does NOT
drop out.
1. Make sure the WELDING TER-
MINALS switch (S6) is in the
“REMOTELY CONTROLLED”
position.
2. Remove the wire feeder control
cable from the amphenol. If the
contactor “drops out,” then the
problem is external to the
RANGER 9. Check the control
cable or the wire feeder.
1. Remove lead #232 from the
output contactor. If the contac-
tor “drops out,” then make sure
that lead #232 is NOT ground-
ed. Also check the WELDING
TERMINALS switch (S6) for
proper operation. Check asso-
ciated wiring. See Wiring
Diagram. The printed circuit
board may be faulty. Replace.
2. If in step #1 the contactor does
NOT drop out, then the contac-
tor may be stuck. Repair or
replace.
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.