gala gar AutoMIG 3 Manuel Technique D'instructions page 26

SYMPTOM. ANOMALY.
THE WELDING START IS VERY
AGGRESSIVE.
THERE ARE MANY
PROJECTIONS.
SPECIALIZED PERSONNEL MUST CARRY OUT ANY WORK ON THE EQUIPMENT.
BOTH AT THE BEGINNING AND END OF A REPAIR CHECK THE EQUIPMENT INSULATION LEVELS.
DISCONNECT THE ELECTRONIC BOARDS WHEN MEASURING THE INSULATION.
The insulation-measuring device will have 500 V D.C. and will be applied to the following points of the circuit:
- Supply-Earth: Ra > 50 Mohms.
- Welding-Earth: Ra > 50 Mohms.
- Supply-Welding: Ra > 50 Mohms.
BEFORE TURNING THE EQUIPMENT ON, ENSURE THAT IT IS OFF LOAD.
DO NOT OPERATE THE ON/OFF SWITCH WITH AN ELECTRICAL LOAD CONNECTED TO THE
WELDING CONNECTORS.
Gala AutoMIG 3
PROBABLE CAUSE.
Aluminium is being welded with a drawing
problem, which causes incorrect arc ignition as
the wire is slowed down on knocking against
the piece.
The wire length at onset of welding process is
too long.
BLOW THE INSIDE OF THE EQUIPMENT WITH COMPRESSED AIR.
POSSIBLE SOLUTION.
Examine the drawing process. Prevent the gun from making
"knots", keeping it in a straight line. The wire must not be
slowed down when it knocks against the piece
Correct arc end operation. Do not strike too long a final
wire length.
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