Red-D-Arc LN-25 PRO EXTREME Operator's Manual page 33

E-3
PROBLEMS
(SYMPTOMS)
The feeder does power up - no dis-
play, no cold feed.
No shielding gas.
Inconsistent wire feeding or wire not
feeding but drive rolls turning.
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
Output Problems
1. The work sense lead is discon-
nected or is a poor electrical con-
nection. (Across the arc models)
2. The power source is OFF.
3. The circuit breaker for the wire
feeder on power source have
tripped. (control cable models)
4. The control cable may be loose or
damaged. (control cable models)
1. The gas supply is OFF or empty.
2. The gas hose is cut or crushed
3. The flow meter valve is closed.
4. Dirt or debris is in the solenoid.
5. There is a loose solenoid connec-
tion.
6. The solenoid has failed.
1. The gun cable is kinked and/or
twisted
2. The wire is jammed in the gun and
cable.
3. The gun liner is dirty or worn.
4. The electrode is rusty or dirty.
5. The contact tip is partially melted
or has spatter.
6. Improper gun liner, tip, drive rolls
and/or inner wire guide.
7. Incorrect tension arm pressure on
the drive rolls.
8. The spindle brake is too tight.
9. Worn drive roll
LN-25 PRO EXTREME
CAUSE
1. Connect the work sense lead to
2. Turn ON the power source.
3. Reset the circuit breakers.
4. Tighten, repair or replace the con-
1. Verify the gas supply is ON and
2. Route the gas hose so it avoids
3. Open the flow meter valve.
4. Apply filtered shop at 80psi to the
5. Remove the cover and check that
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
CAUTION
RECOMMENDED
COURSE OF ACTION
the work in a location free of dirt,
rust and paint.
trol cable.
flowing.
sharp corners and make sure
nothing is on top of it. Repair or
replace damaged hoses.
solenoid to remove dirt.
all connections are in good condi-
tion.
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.
E-3