Lincoln Electric 11827 Operator's Manual page 35

POWER MIG ® 350MP
PROBLEMS
(SYMPTOMS)
Rough wire feeding or wire will not
feed but drive rolls are turning.
The wire feed stops while welding.
When trigger is released and pulled
again the wire feed starts.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.
Observe Safety Guidelines detailed in the beginning of this manual.
POSSIBLE
FEEDING PROBLEMS
1. The gun cable may be kinked or twisted.
2. The wire may be jammed in the gun
cable, or gun cable may be dirty.
3. Check drive roll tension and
position of grooves.
4. Check for worn or loose drive rolls.
5. The electrode may be rusty or dirty.
6. Check for damaged or incorrect
contact tip.
7. Check wire spindle for ease of
rotation and adjust break ten-
sion knob if necessary.
1. Check the wire feed drive rolls
and motor for smooth operation.
2. Check for restrictions in the wire
feed path. Check the gun and
cable for restrictions.
3. Make sure gun liner and tip are
correct for wire size being used.
4. Make sure drive rolls and guide plates
are clean and are the correct size.
5. Check spindle for ease of rotation.
CAUSE
CAUTION
E-4
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.