Troubleshooting & repair, Caution – Lincoln Electric IDEALARC DC 1000 SVM123-A User Manual
Page 49
F-9
TROUBLESHOOTING & REPAIR
F-9
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.
FUNCTION PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Machine shuts off (input contac-
tor drops out) when the welder
output terminals are electrically
energized. (#2 to #4 closure at
terminal strip.)
The DC-1000 will NOT shut off
when the Stop button is pushed.
1. Remove all welding cables
and control cables from the
DC-1000. Jumper #2 to #4 at
the terminal strip. If the
machine does NOT shut off
and normal open circuit volt-
age is present at the welder
output terminals, the problem
is external to the DC-1000.
Either the remote leads #73,
#74, #75, #76 or #77 are
grounded to the negative out-
put cable, or there is a short
on the welding output termi-
nals.
2. If the machine still shuts off
when all control and welding
cables are removed, then the
problem is internal to the DC-
1000.
1. Contact your local Lincoln
Authorized Field Service
Facility.
1. Check for grounds and or
shorts in the #73, #74, #75,
#76, #77 circuit. See wiring
diagram.
2. Check for grounds and shorts
in the welder output terminals
and associated leads. See
wiring diagram.
3. Check the output shunt and
associated leads. See wiring
diagram.
4. Perform the
1. The input contactor (1CR)
contacts may be stuck closed.
Check and replace if neces-
sary.
2. The Interlock contacts (part of
1CR) may be faulty. Replace
if necessary.
3. The Start/Stop button may be
faulty. Check or replace.
CAUTION