Lincoln Electric IM657 RED-D-ARC DC-600 - Manual (Page 32)

E-4 TROUBLESHOOTING E-4
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
Observe Safety Guidelines
detailed in the beginning of this manual.
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
Input contactor (CR1) chatters.
Variable or sluggish welding arc.
Output Control Pot. not functioning
in
“ LOCAL ” control.
No output control in “ REMOTE ”
control.
115VAC duplex receptacle not
working. (60HZ machines only)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
1. The input line voltage may be
low. Check all three phases.
2. Make sure input line voltage
matches machine rating and
the reconnect panel is connect-
ed correctly for the line voltage.
1. Poor electrode or work lead con-
nection
2. Welding cables too small.
3. Welding current or voltage too
low.
1. LOCAL/REMOTE Switch (S3)
faulty or in wrong position.
2. Faulty OUTPUT CONTROL Pot.
1. LOCAL/REMOTE Switch (S3)
faulty or in wrong position.
2. Faulty Remote Control Unit.
1. 115VAC Circuit Breaker tripped.
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Authorized
Field Service Facility.
DC-600