MAINTENANCE AND TROUBLESHOOTING
5
Excessive
Penetration
−
weld metal
melting through
base metal
Too much heat
Select a lower voltage range
and /or adjust the wire speed to
suit Increase travel speed
6
Lack of
Penetration
−
shallow fusion
between weld
metal and base
metal
Poor in incorrect joint preparation
Material too thick. Joint
preparation and design needs to
allow access to bottom of groove
while maintaining proper welding
wire extension and arc
characteristics Keep the arc at the
leading edge of the weld pool and
maintain the gun angle at 5 & 15°
keeping the stick out between
5-10mm
Not enough heat input
Select a higher voltage range
and /or adjust the wire speed to
suit Reduce travel speed
Contaminated base metal
Remove materials like paint,
grease, oil, and dirt, including
mill scale from base metal
4.2 MIG wire feed trouble shooting
The following chart addresses some of the common WIRE FEED problems during MIG welding.
In all cases of equipment malfunction, the manufacturer’s recommendations should be strictly
adhered to and followed.
NO.
Problem
Possible Reason
Suggested Remedy
1
No wire feed
Wrong mode selected
Check that the TIG/MMA/MIG selector
switch set to MIG position
Wrong torch selector switch
Check that the Wire Feeder /Spool Gun
selector switch is set to Wire Feeder
position for MIG welding and Spool
Gun when using the Spool gun
60
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ADVANCEMIG 255C
