Troubleshooting Guide - Lincoln Electric WELDANPOWER SVM 113-A Service Manual

F-4
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Major physical or electrical dam-
age is evident.
No weld output and no auxiliary
power. Engine operates normally.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
216-383-2531 or 1-800-833-9353.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Contact your local Lincoln
Authorized
Facility.
1. Check brushes for wear. See
the Maintenance section of
this manual.
2. Check for loose or faulty con-
nections at brush holders.
CAUTION
WELDANPOWER 125

TROUBLESHOOTING GUIDE

RECOMMENDED
COURSE OF ACTION
1. Contact The Lincoln Electric
Field Service Service Dept. (216) 383-2531 or
1-800-833-9353 (WELD).
1. Perform the Rotor Voltage
Test.
2. If the rotor voltage is low or
missing, check for the proper
flashing current.
Rotor Flashing Circuit Test.
3. Perform the Rotor Resistance
Test.
4. The field capacitor (C1) or recti-
fier bridge (D1) may be faulty.
Test or replace.
5. Test the rheostat (R1). Normal
resistance is 3.3 ohms.
F-4
Perform the