Troubleshooting & repair, Caution – Lincoln Electric LN-9 SVM127-A User Manual
Page 72
TROUBLESHOOTING & REPAIR
F-14
F-14
LN-9 Wire Feeder
TROUBLESHOOTING GUIDE
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
The LN-9 shuts down while weld-
ing. Upon retriggering, the gun the
unit will weld again for a period of
time.
1. Make sure the power source
and wire feeder polarity switch-
es are set correctly for the
process being used.
2. Make certain the voltage control
switch on the Lincoln CV power
source is set in the "Remote"
position.
3. Make sure the #21 lead in the
control cable has continuity to
the work piece.
4. Check the 1/8 amp fuse on the
LN-9 voltage PC board.
Replace if faulty.
5. Be sure the welding power
source is compatible with the
LN-9 and operating properly.
Make sure duty cycle of power
source is not being exceeded.
1. Perform
2. The control cable may be faulty.
Check or replace.
3. The voltage PC board may be
faulty. Replace.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
216-383-2531 or 1-800-833-9353.