Weldtronic TM250C, Operating Manual

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TitanMig AU 250C Manual_ Issue A 0415
4.1 Mig Welding Trouble Shooting (Continued)
Lack of Penetration
Poor joint preparation Material too thick. Joint preparation needs to allow access to bottom of groove
Contaminated base metal Remove any paint , grease, oil & dirt
Lack of Fusion
Contaminated base metal Remove any paint , grease, oil & dirt
Not enough Heat input Increase voltage range / adjust wire speed
No wire Speed
Wrong Mode selected Check that the selector switch is set to MIG position
Inconsistent Wire Feed
Adjusting wrong dial Adjust Wire Speed & Voltage for Mig. Amp dial is used for MMA & TIG
Wrong Polarity Select the correct polarity for the wire being used
Incorrect Wire Speed Adjust Speed setting
Voltage Setting Incorrect Adjust Volt setting
Torch too long Replace with shorter gun
Contact tip worn / wrong size Replace with correct type
Liner worn or clogged Replace with new liner
Wrong size liner Replace with correct type
Blocked inlet or outlet guide Clean or Replace
Incorrect drive roller Fit correct type for wire being used
Worn drive roller Replace with new
Drive roll pressure to high Reduce Drive roll pressure
Too much tension on wire spool hub Reduce the spool hub tension brake
There is output current when pushing the torch trigger to feed gas, but the wire feeder does notwork.
The control cable of the wire feeder is broken Get it repaired or replaced
The wire feeder is clogged. Unclog it.
The wire feeder fails. Repair it.
The control PCB or wire-feeder power PCB inside
the machine fails
Replace it.