Lincoln Electric SAE-300 Operator's Manual page 25

PROBLEMS
(SYMPTOMS)
Welder starts 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.
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
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. Exciter may have lost excita-
tion.
5. Series field and armature cir-
cuit may be open-circuited.
1. Current setting may be too
high.
2. Polarity may be wrong.
1. Exciter output low causing low
output compared to dial indica-
tion.
2. Operating speed too low or too
high.
3. "Current Control" shaft and
handle may have turned slight-
ly in the insulated bushing of
the current control brush hold-
er, caused by turning handle
too hard against one of the
stops.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
3. With current control against the
CAUTION
SAE-300 ®
RECOMMENDED
COURSE OF ACTION
minimum stop, set pointer to with-
in 1/8" of the last scale division.