Faults And How To Remedy Them - Migatronic IWF Guide De L'utilisateur

Faults and how to remedy them

Fault
Welding torch/IWF becomes too
hot
No button function ON/OFF
Wire on contact tip solidified
Irregular wire feed
Arc between gas nozzle and
workpiece
Turbulent arc
Pore formation
Cause
• Contact tip / gas sparger has not been tightened
firmly
• Power connections on welding torch/IWF and work
piece are loose
• Coolant flow is too low
• Contact cable defective - Torch or IWF
• Flow sensor in cooling unit has switched itself on
• Parameter settings are incorrect
• Contact tip is worn
• Burn back parameters set too short
• Wire liner defective or blocked
• Wire Ø and contact tip do not fit
• Contact pressure on feed unit set incorrectly
• Pressure too high for the pressure wheel
• Wire drive rolls with incorrect groove
(U-groove/V-groove)
• Contact tip and gas nozzle have a tip bridge to one
another
• Contact tip does not fit wire Ø or contact tip is worn
• Welding parameters set incorrectly
• Worn wire guide
• Gas nozzle blocked due to welding spatter that is
to intense, gas coverage is too little or existent as a
result
Remedy
• Inspect and tighten, if require
• Inspect and tighten, if required
• Inspect cooling system
• Inspect and repair, if required
• Check coolant fluid and top up, if required
• Inspect parameters and correct, if required
• Replace contact tip
• Inspect parameters and correct, if required
• Blow air through on both sides and replace, if required
• Replace contact tip or wire
• Adjust according to manufacturer specifications
• Inspect wheel and replace, if required
• Verify the groove in the wire drive rolls according to
selected wire (V-groove for Fe (hard) or U-groove for
alu (soft))
• Clean the inside of the gas nozzle and spray spatter
protection or replace gas nozzle
• Inspect contact tip and replace, if required
• Inspect parameters and correct, if required
• Replace wire guide
• Clean the inside of the gas nozzle and spray spatter
protection or replace gas nozzle
• Check gas cylinder, pressure settings
• Shield welded joint with protective walls before the
atmospheric air
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