Lincoln Electric IM823 LN-15 WIRE FEEDER - Manual (Page 29)

E-2
TROUBLESHOOTING E-2
LN™-15 ACROSS THE ARC MODEL & (CE)
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Major physical or electrical damage is evi-
dent when the sheet metal covers are
removed.
The LN™-15 does not power up
The display lights, the wire drive turns, but
there is no welding output when the gun
trigger is depressed.
No shielding gas flow.
The shielding gas turns on sporadically, or
remains on all the time.
The wire drive stops feeding wire after
about 10 seconds.
The wire feed speed varies during welding
but the meter reading remains constant
The Wire Feed Speed Range is only 50 -
601 in/min ( 1.3 - 15.3 m/min).
1. Contact your local authorized Lincoln
Electric Field Service facility for technical
assistance.
1. The power source is not turned on
2. The output studs are not energized
3. The work clip is making a poor connec-
tion.
5. Set the power source to LOCAL control.
1. The contactor has failed.
2. Feed Head Board failed.
1. The gas bottle empty.
2. The gas hose is cut or clogged.
3. The flow meter valve is closed.
4. The gas solenoid has failed
5. The feed head board has failed.
1. The pressure in the gas line is exceed-
ing 80 psi (5.5 bar)
2. The gas solenoid has failed.
1. The motor has exceeded the current rat-
ing.
2. Check to make sure the electrode slides
easily through the liner of the gun.
3. Verify that the spindle brake is not set
too tight.
4. For best results, use only Lincoln elec-
trodes.
5. Wait 10 minutes for the wire feeder to
cool.
1. The drive rolls are slipping because of
feeding problems.
2. The LN™-15 is in CC mode instead of
CV mode.
3. Reduce the spindle brake resistance.
4. Increase the amount of tension in the
wire drive pressure arm.
5. For best results, use only Lincoln elec-
trodes.
6. Verify on power-up that the LN™-15 is
set for CV welding.
1. The 83% wire feed speed dual proce-
dure is activated with the high speed
gear. Check dual procedure switch in
gun.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
OUTPUT PROBLEMS
FEEDING PROBLEMS