Lincoln Electric IM694 RED-D-ARC D503K 5+3 HO - Manual (Page 21)

E-3 TROUBLESHOOTING E-3
Welder runs but fails to generate
current.
Welding arc is loud and spatters
excessively.
Welding current too great or too
small compared to indication on the
dial.
No auxiliary power.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Authorized
Field Service Facility.
D503K 5+3 HO
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
FUNCTION PROBLEMS
Generator or exciter brushes may be
loose or missing.
Exciter may not be operating.
Field circuit of generator or exciter
may be open.
Polarity reversing switch may be in
the neutral position.
Exciter may have lost excitation.
Series field circuit may be open cir-
cuited.
Current setting may be too high.
Polarity may be wrong.
Current Control ” shaft and handle
may have turned slightly in the insu-
lated bushing of the current control
brushholder, caused by turning han-
dle too hard against one of the
stops.
Exciter output low causing low out-
put compared to dial indication.
“ Current Control ” set to minimum
and welder output so great that
engine stalls when arc is struck.
Circuit Breakers open.
Faulty connections to auxiliary
receptacles.
CAUTION