Mig Troubleshooting - Impax IM-MULT160-K Instruction Manual

MIG TROUBLESHOOTING

PROBLEM
Porosity (within or outside
the bead)
Poor or inconsistent wire
feed
No operation when the
torch switch is operated
Low output current
No operation
Excessive spatter
Excessive penetration, the
weld metal is below the
surface level of the
material and hangs below
POSSIBLE CAUSE
Poor material
Insufficient shield gas flow
Gas flow too low/high
Leaking hoses
Faulty gas valve
Working in open area with drafts
Incorrect pressure on wire drive
causing burn back to contact tip
or bird nesting at the feed roll
Damage to torch liner
Welding wire contaminated or
rusty
Worn welding tip
Torch switch faulty
Fuse blown
Faulty PCB inside the equipment
Loose or defective work clamp
Loose cable plug
Power source faulty
No operation and mains lamp not
lit
Faulty power source
Wire feed speed too high or
welding voltage too low
Heat input too high
Poor weld technique
31
REMEDY
Check the material is clean
Check hoses and MIG torch for
blockages
Check the regulator setting or that it
is not frozen due to a high flow
Check all hoses for leaks
Call a service engineer
Put screens up around the weld area
Re-adjust the upper feed pressure.
Increase the pressure to eliminate
burn back to tip. Decrease pressure
to eliminate bird nesting
Replace torch liner
Replace wire
Check and replace welding tip
Check the torch switch continuity and
replace if faulty
Check fuses and replace if necessary
Call a service engineer
Tighten/replace clamp
Re-fix plug
Call a service engineer
Check mains fuse and replace if
required
Call a service engineer
Reset the parameters according to
the weld to be made
Reduce the amperage or use a
smaller electrode and lower amperage
Use correct welding travel speed