Lincoln Electric IM910 LN-15 WIRE FEEDER - Manual (Page 28)

E-2
TROUBLESHOOTING E-2
LN-15 CONTROL CABLE 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 evident when the sheet metal cov-
ers are removed.
The wire drive turns off periodically
while operating on an engine drive.
No shielding gas flow.
The shielding gas turns on sporadi-
cally, 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 facil-
ity for technical assistance.
1. The supply voltage for the LN-15
is too low.
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
exceeding 80 psi (5.5 bar)
2. The gas solenoid has failed.
1. The motor has exceeded the cur-
rent rating.
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
electrodes.
5. Wait 10 minutes for the wire feed-
er 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 resis-
tance.
4. Increase the amount of tension in
the wire drive pressure arm.
5. For best results, use only Lincoln
electrodes.
6. Verify on power-up that the LN-15
is set for CV welding.
1. The 83% wire feed speed dual
procedure is activated with the
high speed gear.
Check dual proce-
dure 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 PROBLEM