Troubleshooting Guide - Lincoln Electric IDEALARC SVM 122-A Service Manual

F-5

TROUBLESHOOTING GUIDE

PROBLEMS
(SYMPTOMS)
The machine is dead – no output –
no fan – the pilot light is lit.
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. Check the three-phase input
voltage at the machine. Input
voltage must match the rating
plate and the reconnect panel.
2. Check for blown or missing
fuses in the input lines.
CAUTION
IDEALARC DC-400
LINCOLN
ELECTRIC
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. Perform the Input Contactor
Test.
2. Check the associated leads, for
loose or faulty connections,
between the input contactor
(CR1), the reconnect panel and
the main transformer.
Wiring Diagram.
3. Perform the Main Transformer
Test.
®
F-5
See