Lincoln Electric IDEALARC DC-1000 Service Manual page 40

F-6
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Machine input contactor operates
but machine has no weld output.
Fan runs and pilot light glows.
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 1-888-935-3877.
TROUBLESHOOTING AND REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Install a jumper from #2 to #4 on
machine
machine weld output is restored,
the problem is in the wire feeder
or control cable.
2. If remote control is not being
used, make certain the output
control switch (SW3) is in the
"OUTPUT CONTROL AT DC
1000" position.
3. Check 8 AMP fuse in the front
panel. Replace if blown.
4. Check for loose or faulty weld
cable connections.
CAUTION
IDEALARC
1. Check operation of output pilot
terminal strip. If
2. Check the output control poten-
3. Perform Main Transformer
4. Perform Firing Board Test.
5. Perform Control Board Test.
6. Perform Static SCR Test.
7. Perform Active SCR Test.
® DC-1000
RECOMMENDED
COURSE OF ACTION
relay (4CR). There should be
115 VAC present on leads #31
and #4 at (4CR) when #2 and
#4 are jumpered together at the
terminal strip.
a. If the correct voltage is pre-
sent and the relay does not
activate, the relay may be
faulty - Replace.
b. If the 115 VAC is missing,
check the associated wiring
for loose or faulty connec-
tions. See Wiring Diagram.
tiometer (R1) and associated
circuitry for loose or faulty con-
nections. See Wiring Diagram.
Test.
F-6