Lincoln Electric IDEALARC DC 1000 SVM123-A - Manual (Page 48)

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F-8 TROUBLESHOOTING & REPAIR F-8
IDEALARC DC-1000
Observe all Safety Guidelines detailed throughout this manual
OUTPUT PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The machine does not have max-
imum weld output. 1. Check all three-phase input
lines at the DC-1000. Make
sure input voltages match
machine rating and reconnect
panel.
2. Put output control switch
(SW3) in “OUTPUT CON-
TROL AT DC-1000” position.
If problem is solved, then
check remote control unit or
wire feeder.
1. Check the output control
potentiometer (R1) and asso-
ciated circuitry for loose or
faulty connections. See wiring
diagram.
2. Perform Control Board Test.
3. Perform Firing Board test.
4. Perform Main Transformer
Test.
5. Perform SCR Output Bridge
Test.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.
CAUTION