Lincoln Electric MAGNUM 200FM Manual page 17

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Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
Drive rolls turn, but wire will not feed
or wire feeding is rough.
Variable or "hunting" arc.
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
POSSIBLE AREAS OF
MISADJUSTMENTS
a. Gun cable kinked and/or twisted.
b. Wire jammed in gun and cable.
c. Incorrect drive rolls and guide
tubes.
d. Gun cable liner dirty.
e. Worn drive rolls.
f. Electrode rusty and/or dirty.
g. Worn or improper size cable liner.
h. Partially flashed, melted or
improper size contact tip.
a. Contact tip worn or incorrect size.
b. Worn or undersize ground cables
or poor ground connections.
c. Loose electrode connections.
CAUTION
MAGNUM 200FM
RECOMMENDED
COURSE OF ACTION
a. Keep as straight as possible.
Inspect cable and replace if nec-
essary.
b. Remove wire from gun and cable
– geed in new wire. Note any
obstruction. Replace liner if nec-
essary.
c. Be sure the wire diameter being
used is stamped on drive rolls
and guide tubes. Replace if nec-
essary.
d. Clean liner or replace.
e. Replace or reverse split drive roll
type.
f. Replace the electrode if it is
rusty.
g. Replace cable liner.
h. Replace the contact tip.
a. Replace contact tip.
b. Inspect – repair or replace as
necessary.
c. Be sure the following connec-
tions are tight: electrode cable to
wire feeder and power source,
work cable to power source and
work, gun cable to wire feeder
contact block, gun nozzle to
body and contact tip to nozzle.
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