Thermal Arc Viking 210GM, Operating Manual

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Viking 210GM, 250GM
30
12.2 Welding Problems
FAULT CAUSE REMEDY
1 Undercut. A Welding arc voltage too
high.
A Reduce voltage by reducing
the voltage selection switches
position or increase the wire
feed speed.
B Incorrect torch angle B Adjust angle
C Excessive heat input C Increase the torch travel
speed and/or reduce welding
current by reducing the
voltage selection switches
position or reducing the wire
feed speed.
2 Lack of penetration. A Welding current too low A Increase welding current by
increasing wire feed speed
and increasing voltage
selection switch position.
B Joint preparation too
narrow or gap too tight
B Increase joint angle or gap
C Shielding gas incorrect C Change to a gas which gives
higher penetration
3 Lack of fusion. Voltage too low Increase voltage by
increasing voltage selection
switches position.
4 Excessive spatter. A Voltage too high A Lower voltage by reducing
the voltage selection switches
or increase wirespeed control.
B Voltage too low B Raise voltage by increasing
the voltage selection switches
or reduce wirespeed control.
5 Irregular weld shape. A Incorrect voltage and
current settings.
Convex, voltage too low.
Concave, voltage too
high.
A Adjust voltage and current by
adjusting the voltage
selection switches and the
wirespeed control.
B Wire is wandering B Replace contact tip
C Incorrect shielding gas C Check shielding gas.
D Insufficient or excessive
heat input
D Adjust the wirespeed control
or the voltage selection
switches.