Lincoln Electric IM-939A, LN-25, 11523, 11389 specifications Output Problems

E-3

TROUBLESHOOTING

E-3

Observe all Safety Guidelines detailed throughout this manual

The feeder does power up - no dis-

1.

The work sense lead is discon-

1.

Connect the work sense lead to

play, no cold feed.

nected or is a poor electrical con-

the work in a location free of dirt,

nection. (Across the arc models)

rust and paint.

2.

The power source is OFF.

2.

Turn ON the power source.

3.

The circuit breaker for the wire

3.

Reset the circuit breakers.

feeder on power source have

tripped. (control cable models)

4.

The control cable may be loose or

4.

Tighten, repair or replace the con-

damaged. (control cable models)

trol cable.

No shielding gas.

1.

The gas supply is OFF or empty.

1.

Verify the gas supply is ON and

2.

The gas hose is cut or crushed

flowing.

2.

Route the gas hose so it avoids

sharp corners and make sure

nothing is on top of it. Repair or

3.

The flow meter valve is closed.

replace damaged hoses.

3.

Open the flow meter valve.

4.

Dirt or debris is in the solenoid.

4.

Apply filtered shop at 80psi to the

5.

There is a loose solenoid connec-

solenoid to remove dirt.

5.

Remove the cover and check that

tion.

all connections are in good condi-

6.

The solenoid has failed.

tion.

Inconsistent wire feeding or wire not

1.

The gun cable is kinked and/or

1.

Keep the gun cable as straight as

feeding but drive rolls turning.

twisted

possible. Avoid sharp corners or

2.

The wire is jammed in the gun and

bends in the cable.

2.

Remove the gun from the wire

cable.

feeder and pull the jammed wire

3.

The gun liner is dirty or worn.

out of the gun and cable.

3.

Blow dirt out of the liner with low

pressure (40psi or less). Replace

4.

The electrode is rusty or dirty.

the liner if worn.

4.

Use only clean electrode. Use

quality electrode, like L-50 or L-56

5.

The contact tip is partially melted

from Lincoln Electric.

5.

Replace the contact tip.

or has spatter.

6.

Improper gun liner, tip, drive rolls

6.

Verify the proper parts are

and/or inner wire guide.

installed.

7.

Incorrect tension arm pressure on

7.

Adjust the tension arm per the

the drive rolls.

Instruction Manual. Most elec-

trodes feed well at a tension arm

8.

The spindle brake is too tight.

setting of "3".

8.

Verify the spool of wire moves

9.

Worn drive roll

with minimal effort.

9.

Replace the drive rolls if worn or

filled with dirt.