Lincoln Electric IM10027 SAE400 - Manual (Page 27)

E-4 TROUBLESHOOTING E-4
SAE-400®
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
FUNCTION PROBLEMS
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
1. “Current Control” shaft and han-
dle may have turned slightly in
the insulated bushing of the cur-
rent control brush holder, 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. With current control against the
minimum stop, set pointer to with-
in 1/8” of the last scale division.
2. Check for shorts in exciter arma-
ture with growler.
3. Check to see that series field is
properly connected and not short-
ed.
1. Place switch in “LOCAL” position
to control output at the welder.
Place switch in “REMOTE” posi-
tion to control output remotely.