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MT/AUT/AUT RAB 10 Troubleshooting
Problem Cause Solution
Torch becomes too hot • Contact tip / Tip adapter loose • Check and tighten
Torch becomes too hot • Power connections loose on the
torch side and toward the work-
piece
• Coolant flow too low
• Check and tighten
• Check cooling system, increase
coolant flow
Wire burned solid in the
contact tip
• Wrong parameters set
• Worn-out contact tip
• Adjust wire burn-back function
• Check or correct setting
•Replace
•Correct
Irregular wire feed • Guide spiral liner/PA liner
clogged
• Contact tip and wire diameter not
tuned to one another
• Wrong contact pressure set on
the wire feed unit
• Clean both directions with
compressed or replace it, if
necessary
• Replace contact tip
• Correct as specified by
manufacturer
Arc between gas nozzle
and work-piece
• Spatter bridge between contact
tip and gas nozzle
• Clean and spray gas nozzle
interior
Unsettled arc • Contact tip not matched to the
wire diameter or contact tip
diameter enlarged
• Wrong welding parameters set
• Wire guide unit worn-out
• Check the contact tip and
replace it if necessary.
• Correct welding parameters
• Replace wire guide unit
Pore formation • Strong spattering in the gas
nozzle
• Insufficient or missing gas cover
• Air draughts blow shielding gas
away
• Clean gas nozzle
• Check gas cylinder contents and
pressure setting
• Shield welding area with
partitions
Tab. 11 Troubleshooting
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