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F-14
TROUBLESHOOTING AND REPAIR
F-14
LN-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The wire is feeding rough or not
feeding, but the drive rolls are
turning.
The contact tip seizes in the gun
liner.
1. Check for mechanical restric-
tions in the wire feed path.
2. Make sure the gun liner is cor-
rect for the electrode wire being
used.
3. Check the contact tip.
4. Make sure the drive rolls are
installed correctly.
5. Make sure the DIP switches on
the control board are set
correctly. See Wire Drive Head
Selection.
1. The tip may be overheated
because of prolonged or
excessive high current and/or
duty cycle.
1. If the drive rolls are turning
erratically perform the Wire
Drive Motor Test and Tach
Adjustment and Feedback
Test.
1. Apply a light coating of high
temperature anti-seize lubri-
cant-graphite grease to the tip’s
threads.
FEEDING PROBLEMS
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353.
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