Lincoln Electric 350MP Operator's Manual page 39

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PROBLEMS
(SYMPTOMS)
During Welding the wire continues
to burn back to the tip.
Wire bird nests while welding.
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
PUSH PULL WIRE FEEDING PROBLEMS
1. Check to see that the spindle
brake is not set too tight.
There should be an aluminum
spacer behind the spindle
brake. Refer to the push-pull
connection kit for this spacer.
2. POWER MIG
too tight. The tension arm should
be set at 1 to 1-1/2.
3. Push-Pull torch drive rolls set too
tight. Refer to owners manual for
proper setting.
4. If pulse welding the trim value
may be set too high.
5. Clean or replace contact tip.
6. If problem continues after 1 thru
5 are checked then the Stall
Factor Number needs to be
increased. (See Stall Factor
Number Adjustment)
1. Torch liner conduit not inserted
all the way so that it is touching
the inner black plastic wire guide.
2. Inner black plastic wire guide is
worn out. Replace guide.
3. Push-Pull torch drive rolls set too
tight. Refer to owners manual for
proper setting.
4. If problem continues after 1 thru
3 are checked then lower your
Stall Factor Number. (See: Stall
Factor Number Adjustment)
POWER MIG
CAUSE
350MP drive rolls set
®
CAUTION
350MP
®
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.
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