TYPES OF MALFUNCTIONING/ WELDING FAULTS – CAUSES – REMEDIES
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5.0 TYPES OF MALFUNCTIONING/ WELDING FAULTS – CAUSES – REMEDIES
TYPES OF MALFUNCTIONING
WELDING FAULTS
POSSIBLE CAUSES
CONTROLS AND REMEDIES
The generator does not weld.
A) The main switch is off.
B) The power lead is interrupted (lack of one or two
phases).
C) Other.
A) Switch on mains.
B) Verify and repair.
C) Ask for the intervention of the Assistance Centre.
During welding suddenly the outgoing current is
interrupted, the green led is off and the yellow led
goes on.
Overheating has occurred and the automatic pro-
tection has come on. (See work cycles).
Keep generator switched on and wait till temperature has
dropped again (10-15 minutes) to the point where the yel-
low switch goes off again.
Welding power reduced.
Outgoing wires are not correctly attached.
A phase is missing.
Check that wires are intact, that the pliers are sufficient and
that they are applied to welding surface clean from rust,
paint or oils.
Excessive jets.
Welding arch too long.
Welding current too high.
Wrong torch polarity, lower the current values.
Craters.
Fast removal of the electrodes.
Inclusions.
Inadequate cleaning and bad distribution of coating.
Faulty movement of the electrodes.
Inadequate penetration.
Forward speed too high. Welding current too low.
Sticking.
Welding arch too short.
Current too low.
Increase current values.
Blowing and porosity.
Damp electrodes. Arch too long. Wrong torch polarity.
Jacks.
Currents too high. Dirty materials.
The electrode fuses in TIG.
Wrong torch polarity. Type of gas not suitable.
