Lincoln Electric IDEALARC R3R-300 - Manual (Page 18)

D-6 TROUBLESHOOTING D-6
IDEALARC® R3R, -300, -400, -500
Observe all Safety Guidelines detailed througout 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
FUNCTION PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Current control on machine not
functioning.
Optional remote current control not
functioning. See Troubleshooting
Procedures before connecting.
1. Current control switch in wrong
position.
2. Current control switch defective.
3. Current control potentiometer
defective.
4. Lead or connection in control
circuit open.
5. Defective control or circuit
boards.
1. Current control switch in the
wrong position.
2. Leads 75, 76 and 77 not con-
nected to correct numbers on
models with terminal strip.
3. Remove control leads broken.
4. Remote control potentiometer
open.
5. Lead or connection in current
control circuit open.
6. Control PC board plug discon-
nected or loose.
7. Control circuit problems.
If all recommended possible areas
of
misadjustment have been
checked and the problem persists,
Contact
your local Lincoln
Authorized Field Service Facility.