Troubleshooting & repair, Caution – Lincoln Electric IDEALARC DC 1000 SVM123-A User Manual
Page 45
F-5
TROUBLESHOOTING & REPAIR
IDEALARC DC-1000
Observe all Safety Guidelines detailed throughout 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.
OUTPUT PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Input contactor pulls in when start
button is pressed but immediately
drops out when start button is
released.
1. Make sure input voltages
match machine rating and
reconnect panel.
2. Remove all external wires
attached to terminal strip (2, 4,
31, 32, 73, 74, 75, 76, 77). If
contactor (1CR) functions cor-
rectly, there may be a ground
or negative intrusion on the
remote control leads (73, 74,
75, 76, or 77). There may also
be a short at the welder output
terminals.
3. If the problem persists after
performing steps #1 and #2,
the problem is in the DC-
1000.
1. The 1CR interlock may be
faulty. Replace if necessary.
2. The Start/Stop button may be
faulty. Check or replace.
3. Check internal remote control
circuit (leads 73, 74, 75, 76
and 77) and switch SW3 for
grounds or shorts.
4. The control board may be
faulty - Replace.
CAUTION
F-5