Tweco FP-90 - Manual (Page 26)

FIREPOWER FP-150 MIG-GUN PARTS LISTING
Model No. Victor No. Description
FP150 1444-0600 Gun Assy
FP21-50 1444-0601 Nozzle
FP11-30 1444-0602 Contact Tip
FP35-50 1444-0603 Trigger
GENERAL OPERATING TIPS
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 hose, and other parts of the MIG-Gun for abrasion, cuts,
or undue wear. Replace or repair any parts found deficient.
TROUBLESHOOTING GUIDE FOR FIREPOWER FP-150 MIG GUN
22
P ROBLEM
Wire feed inconsistent or not smooth.
Mig-Gun is running hot.
Porous weld.
P OSSIBLE C AUSE
1. Loose contact tip or diffuser.
2. Excessively worn contact tip.
3. Spatter buildup on end of contact tip.
4. Sharp bends or kinks in conduit.
5. Dirty or plugged conduit.
6. Conduit pulled back from diffuser.
7. Machine improperly adjusted.
1. Loose contact tip or diffuser.
2. Loose power connections.
3. Loose or undersize ground cable or
ground clamp.
4. Operating gun above recommended
amperage rating.
1. Poor or improper gas flow.
2. Dirty or contaminated wire.
3. Base metal contaminated.
C ORRECTIVE A CTION
1. Tighten contact tip and diffuser plier-
tight.
2. Replace contact tip.
3. Clean or replace contact tip.
4. Straighten or replace conduit.
5. Replace conduit.
6. Reposition conduit and tighten front
set screw.
7. Reset machine as per machine and
wire manufacturers' recommendations.
1. Tighten contact tip and diffuser plier-
tight.
2. Inspect complete gun for loose con-
nections and repair.
3. Tighten or replace as required.
4. Re-adjust machine to correct setting
for size of gun being used.
1. Check gas flow out of gun nozzle.
Check for leaks or restrictions in gas
hoses and connections.
2. Change wire.
3. Replace base metal.
Figure 20: FP-150 MIG Gun Assembly