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LF-72/74
TROUBLESHOOTING & REPAIR
F-6 F-6
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LF-72/74
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS (Continued)
The motor (L12081) failed when a
load (6 N m) was applied to the
wire drive.
When testing the wire drives for
feeding problems (“inconsistent
feeding”, “grinding noises from the
gearbox”, “jumping drive rolls”) the
wire drive should be tested under
load.
This can be done by loading a
spool of wire, setting the spindle
brake to maximum and hen feed-
ing wire.
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 at 1-888-935-3877 for electrical troubleshooting assistance before
you proceed.