Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility
for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
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.
Welder has output and no control
No auxiliary power
1. Generator or exciter brushes may
be loose or missing.
2. Exciter may not be operating.
3. Field circuit of generator or
exciter may be open.
4. Polarity reversing switch may be
in the neutral position.
5. Exciter may have lost excitation.
1. Series field circuit may be open
circuited.
2. Current setting may be too high.
3. Polarity may be wrong.
1. “Current Control” shaft and han-
dle may have turned slightly in
the insulated bushing of the cur-
rent control brushholder, caused
by turning handle too hard
against one of the stops.
2. Exciter output low causing low
output compared to dial indica-
tion.
3. “Current Control” set to minimum
and welder output so great that
engine stalls when arc is struck.
1. Local/Remote switch is in wrong
position.
1. GFCI Receptacle may have
tripped. Follow “GFCI
Receptacle Testing and
Resetting Procedure” in the
MAINTENANCE section of this
manual.
2. Circuit Breakers open.
3. Faulty connections to auxiliary
receptacles.
4. Faulty receptacles.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
E-4
TROUBLESHOOTING
SAE-500
TM
AND SAE-500
TM
SEVERE DUTY
TM
