Lincoln Electric IM922 LN-23P - Manual (Page 19)

E-3 TROUBLESHOOTING E-3
LN™-23P
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 your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Improper wire speed control.
Can’t obtain required voltage.
1. Faulty printed circuit board, faulty
rheostat, or faulty motor.
1. Defective power source of CV
Converter.
2. On SAM welders, constant volt-
age control must be adjusted to
give required voltage and mode
switch must be set to constant
voltage position.
3. On DC-600 and R3S welders,
fine voltage control switch must
be set to remote position.
4. Broken lead(s) in 75-76-77 (A-
B-C) control circuit.
5. Defective voltage control rheo-
stat.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.