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9 TROUBLESHOOTING
9
TROUBLESHOOTING
Perform these checks and inspections before contacting an authorized service technician.
Type of fault
Porosity within the weld
metal
Wire feeding problems
GMAW (MIG) welding
problems
No power/No arc
The overheating protection
trips frequently
0447 956 001
Corrective action
Check gas bottle is not empty.
Check gas regulator is not closed.
Check gas inlet hose for leaks or blockage.
Check that the correct gas is connected and the correct gas flow is
used.
Keep the distance between the GMAW torch nozzle and the work
piece to a minimum.
Do not work in areas where drafts, which would disperse the shielding
gas, are common.
Make sure the work piece is clean, with no oil or grease on the
surface, before welding.
Make sure the wire spool brake is adjusted correctly.
Make sure the feed roller is correct size and not worn.
Make sure the correct pressure is set on the feed rollers.
Make sure the correct contact tip is used and it is not worn.
Make sure the liner is the right size and type for the wire.
Make sure the liner is not bent so that friction is caused between the
liner and the wire.
Make sure the torch is connected to the correct polarity.
Replace contact tip if it has arc marks in the bore causing excessive
drag on the wire.
Make sure the correct shielding gas, gas flow, voltage, welding
current, travel speed and torch angle are used.
Make sure the work lead has proper contact with the work piece.
Check that the input power supply switch is turned ON.
Check if a temperature fault is shown on display.
Check if system breaker is tripped.
Check that the input power, welding and return cables are correctly
connected.
Check that the correct current value is set.
Check the input power supply fuses.
Make sure that you are not exceeding the recommended duty cycle
for the weld current you are using. See Section 5.9 "Duty cycle",
page 23.
Make sure that the air inlets or outlets are not clogged.
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© ESAB AB 2023
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