Fronius CMT 4000 Advanced, Operating Instructions Manual

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Irregular wire feed speed
Braking force has been set too high
Loosen the brake
Hole in the contact tip is too narrow
Use a suitable contact tip
Faulty inner liner in welding torch
Check the inner liner for kinks, dirt, etc. and replace if necessary
The feed rollers are not suitable for the wire electrode being used
Use suitable feed rollers
Feed rollers have the wrong contact pressure
Optimise the contact pressure
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Wirefeed problems
when using long hosepacks
Incorrect arrangement of hosepack
Arrange the hosepack in as straight a line as possible, avoid tight bends Cause:
Remedy:
Welding torch becomes very hot
The specification of the welding torch is inadequate
Observe the duty cycle and loading limits
Only on water-cooled systems: Inadequate coolant flow
Check coolant level, coolant flow, for coolant contamination, etc. For further
information refer to the cooling unit operating instructions.
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