Lincoln Electric IM870-A - Manual (Page 27)

E-4 TROUBLESHOOTING E-4
SAE-400 SEVERE DUTY
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
Welding current too great or too
small compared to indication on the
dial.
Welder has output and no control
No auxiliary power
1. “Current Control” shaft and handle
may have turned slightly in the
insulated bushing of the current
control brushholder, caused by
turning handle too hard against
one of the stops.
2. Exciter output low causing low
output compared to dial indication.
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. (GFCI Receptacle is
Optional)
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.