Tweco Eliminator Spool Gun - Manual (Page 25)

safety and operating instructions
11-21 89200011
SECTION 11:
TROUBLESHOOTING
Contact tips and nozzles should be cleaned frequently. Spatter buildup may cause bridging
between nozzle and tip. This could cause electrical shorting between the nozzle and work
piece as well as poor or improper gas flow. Regularly inspect the conductor tube, handle,
cable, and other parts of the MIG gun for abrasion, cuts, or undue wear. Replace or repair any
parts found deficient.
Problem Possible Cause Corrective Action
Wire feed inconsistent, not
smooth, or is bird nesting.
1. Loose contact tip or diffuser.
1. Tighten contact tip and diffuser
plier tight.
2. Excessively worn contact tip. 2. Replace contact tip.
3. Spatter buildup on end of
contact tip.
3. Clean or replace contact tip.
4. Sharp bends or kinks in
conduit.
4. Straighten or replace conduit.
5. Dirty or plugged conduit. 5. Replace conduit.
6. Conduit pulled back from
diffuser.
6. Reposition conduit and tighten
front set screw.
7. Machine improperly adjusted.
7. Reset machine per machine
and wire manufacturers’
recommendations.
8. Gap between drive rolls and
outlet guide inside feeder.
8. Move outlet guide right up to
drive rolls without touching and
tighten the guide nut.
MIG gun is running hot
1. Loose contact tip or diffuser.
1. Tighten contact tip and diffuser
plier tight.
2. Loose power connections.
2. Inspect complete gun for loose
connections and repair.
3. Loose or undersized ground
cable or ground clamp.
3. Tighten or replace as required.
4. Operating gun above
recommended amperage
rating.
4. Readjust machine to correct
setting for size of gun being used.
Porosity
1. Poor or improper gas flow,
possibly due to the outlet
2. Guide nut on feeder not being
tightened down on guide
1. Check gas flow out of gun nozzle.
Check for leaks or restrictions
in gas hoses and connections.
Check for O-ring damage on rear
connector plug.
2. Check outlet guide nut on feeder;
tighten if not already done.
3. Dirty or contaminated wire. 3. Change wire.
4. Base metal contaminated.
4. Replace base metal or
brush clean.
Troubleshooting