Lincoln Electric IDEALARC DC-1000 Service Manual page 38

F-4
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Major Physical or Electrical Damage
is Evident.
The Machine is dead - The Input
contactor does not operate.
Input contactor (1CR) chatters.
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
Contact the Lincoln Electric Service
Dept. 1-888-935-3877.
1. Check for blown or missing fuses
in input lines.
2. Check the three-phase input line
voltage at the machine. The input
voltage must match the rating
plate and reconnect panel.
1. The input line voltage may be
low. Check all three phases.
2. Make sure input line voltage
matches machine rating and
reconnect panel.
CAUTION
IDEALARC
COURSE OF ACTION
1. The Start/Stop button (S1) may
be faulty- Check for proper oper-
ation. See Wiring Diagram.
2. The Control Transformer (T2)
may be faulty. Perform the
Control Transformer Test.
3. The primary or secondary ther-
mostats may be open. Check or
replace. Also check the associat-
ed wiring. See Wiring Diagram.
4. The pilot relay (2CR) may be
faulty. Check or replace. See
Wiring Diagram.
5. The input contactor coil may be
open. See Wiring Diagram.
6. The Control board may be
faulty - Replace.
1. The pilot relay (2CR) may have
bad contacts. Check or replace
relay.
2. Check for loose or faulty wiring
between pilot relay (2CR) and
input contactor (1CR) coil con-
nections.
3. The input contactor (1CR) may
be faulty - Replace.
® DC-1000
F-4
RECOMMENDED