Lincoln Electric IDEALARC R3R 375-I - Manual (Page 18)

E-6 TROUBLESHOOTING E-6
IDEALARC® R3R 375-I, 500-I AND 600-I
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
L. Optional remote current control
not functioning. See
Troubleshooting , Section C
before connecting.
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. Remote 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.
1. Place switch in “remote” ( )
position.
2. Correct connection.
3. Repair broken leads.
4. See Troubleshooting, Section C.
5. Connect or repair.
6. Connect plug.
7. See SCR Troubleshooting,
Section K.