Lincoln Electric SVM123-A Manual Do Utilizador

Observe all Safety Guidelines detailed througout this manual

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.

The weld output terminals are
always electrically “hot”.

1. Remove any external leads

hooked to #2 and #4 on the
terminal strip. If the problem
disappears, the fault is in the
control cable or wire feeder.

2. If some open circuit voltage is

present (over 3 VDC.) after
performing Step #1, then the
problem is within the DC-
1000.

1. Check for an internal short

between leads #2 and #4. See
wiring diagram.

2. The Pilot Relay (4CR) may be

stuck closed. Check or
replace.

3. Perform 

4. Perform 

5. Perform the 

6. The SCR Snubber(s) may be

“leaky”. Check or replace. See
wiring diagram.