Red-D-Arc LN25 PRO EXTREME Operator's Manual page 33

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PROBLEMS
(SYMPTOMS)
Inconsistent wire feeding or wire not
feeding but drive rolls turning.
Wire feed speed consistently oper-
ates at the wrong value. The speed
changes when the wire feed speed
knob is adjusted.
The wire feed speed stuck at 200-
300 in/min and there is no change
when the wire feed speed knob is
adjusted.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
1. The gun cable is kinked and/or
twisted.
2. The wire is jammed in the gun and
cable.
1. The wrong gear is installed in the
wire drive.
2. The brushes on the motor are
worn.
1. The tachometer is connected
improperly.
2. The tachometer has failed.
RED-D-ARC LN25™ PRO EXTREME
CAUSE
1. Keep the gun cable as straight as
2. Remove the gun from the wire
3. Blow dirt out of the liner with low
4. Use only clean electrode. Use
5. Replace the contact tip.
6. Verify the proper parts are
7. Adjust the tension arm per the
8. Verify the spool of wire moves
9. Replace the drive rolls if worn or
1. Install the proper pinion gear in
2. Inspect and replace the motor
1. Verify all of the tachometer leads
2. Replace the motor and tachome-
CAUTION
RECOMMENDED
COURSE OF ACTION
possible. Avoid sharp corners or
bends in the cable.
feeder and pull the jammed wire
out of the gun and cable.
pressure (40psi or less). Replace
the liner if worn.
quality electrode, like L-50 or L-56
from Lincoln Electric.
installed.
Instruction Manual. Most elec-
trodes feed well at a tension arm
setting of "3".
with minimal effort.
filled with dirt.
the wire drive.
brushes.
are properly connected.
ter assembly.
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