Trouble Shooting; Mig Trouble Shooting - Weldtronic TM250C Operating Manual

Trouble Shooting

4.1 Mig Welding Trouble Shooting
The following chart addresses some common problems during MIG Welding.
In the event of equipment malfunction, contact an authorized service agent.
Possible Reason
The Welding current is unstable
The pressure arm on the wire feeder is not
properly adjusted
The drive roll does not match the wire size being
used.
The contact tip of the welding torch is badly
worn.
The wire-feeding tube of the welding torch is
badly worn.
The welding wire is of poor quality
Excessive Spatter
Wire feed speed set too high
Voltage to high
Wrong polarity Set
Stick out too long
Contaminated base metal
Contaminated MIG Wire
Gas Flow too high or too low
Porosity
Wrong Gas
Gas Flow too high or too low
Moisture on the base metal
Contaminated base metal
Contaminated MIG Wire
Gas nozzle worn or out of shape
Missing or damaged gas diffuser
Mig Torch O-ring missing or worn
Wire stubbing
Holding the torch too far away
Welding Voltage too Low
Wire Speed Too High
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Suggested Solution
Adjust it to get proper pressure.
Make sure they match with each other.
Replace it.
Replace it
Replace it with welding wire of good quality
Select lower wire speed
Select a lower voltage setting
Select the correct polarity for the wire being used
Bring the torch closer to the work piece
Remove any paint , grease, oil & dirt
Use clear dry rust free wire only.
Check gas is connected. Set gas flow between 10-15 l/min. Protect Weld Zone
from wind & drafts
Check that correct gas is being used
Check gas is connected. Set gas flow between 10-15 l/min.
Protect Weld Zone from wind & drafts
Remove all moisture from base metal
Remove any paint , grease, oil & dirt
Use clear dry rust free wire only.
Replace it
Replace it
Replace it
Bring torch closer to work piece. Stick out should be 5-10mm
Increase Voltage
Decrease the wire speed