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TROUBLESHOOTING
HOW TO USE TROUBLESHOOTING GUIDE
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician and machine
operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please
observe all safety notes and precautions detailed throughout this manual.
__________________________________________________________________________
This Troubleshooting Guide is provided to help you
locate and repair possible machine malfunctions.
Simply follow the three-step procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled "PROBLEM (SYMP-
TOMS)". This column describes possible symptoms
that the machine may exhibit. Find the listing that best
describes the symptom that the machine is exhibiting.
Step 2. POSSIBLE CAUSE.
The second column labeled "POSSIBLE CAUSE" lists
the obvious external possibilities that may contribute to
the machine symptom.
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.
WARNING
Step 3. RECOMMENDED COURSE OF ACTION
This column provides a course of action for the
Possible Cause, generally it states to contact your
local Lincoln Authorized Field Service Facility.
If you do not understand or are unable to perform the
Recommended Course of Action safely, contact your
local Lincoln Authorized Field Service Facility.
CAUTION
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TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
No wire feed occurs when trigger is
1. Machine is switched off or unplugged.
pulled
2. Spool gun is out of wire.
3. Contact tip burnback.
4. Fully or partially blocked gun tube liner.
5. Bird nest.
6. Machine s toggle selector switch is not
set to spool gun mode.
7. Defective trigger. (contacts open)
8. Defective trigger circuit in gun.
9. Damaged spool gun motor.
10. No motor voltage or current from
machine.
11. Contact tip size too small for wire
diameter used.
Sluggish wire feed when trigger is pulled
1. Drive roll is worn or galled with alu-
minum.
2. Machine s wire feed speed setting is
too low.
3. Wire is obstructed somewhere along
the wire feed path in the gun.
4. Low motor voltage.
Drive roll turns in reverse direction.
1. Motor leads are connected in reverse.
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.
POSSIBLE
RECOMMENDED
CAUSE
COURSE OF ACTION
PROBLEMS
1. Switch on or plug in machine.
2. Install full spool of specified wire.
3. Replace contact tip.
4. Remove and clean or replace gun tube
liner. (See maintenance section)
5. Cut out bird nest, reload wire, and
check for proper wire alignment and
wire s mechanical resistance.
6. Flip switch to proper operating posi-
tion.
7. Replace trigger. (See maintenance
section)
8. Disconnect gun from machine and
check trigger circuit for continuity.
9. Contact LASF for possible motor
replacement.
10. See Troubleshooting section in weld-
ing machine s instruction manual.
11. Replace contact tip with one that is
the correct size.
1. Clean drive roll of all aluminum or
replace drive roll.
2. Increase wire feed speed.
3. Check for obstructions: remove any
wire shavings; remove kinked wire;
remove and clean or replace gun tube
liner (See Maintenance Section ).
4. See Troubleshooting section in weld-
ing machine s instruction manual.
1. Connect properly. (See maintenance
section)
CAUTION
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