Lincoln Electric SA-400I Operator's Manual page 26

SA-400I
®
PROBLEMS
(SYMPTOMS)
Welder starts but fails to generate cur-
rent.
Welding arc is loud and spatters exces-
sively.
Welding current too great or too small
compared to indication on the dial.
Arc continuously pops out.
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.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
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 excitation.
5. Series field and armature circuit 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 indication.
2. Operating speed too low or too high.
"Current Range Selector" switch
maybe set at an intermediate position.
CAUTION
E-3
TROUBLE SHOOTING
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas of mis-
adjustment have been checked and the
problem persists, Contact your local
Lincoln Authorized Field Service Facility.