GALA INDUSTRIAL.. Instructions Manual.
29
SYMPTOM. ANOMALY.
PROBABLE CAUSE.
POSSIBLE SOLUTION.
Spotting jobs are being carried out with high
inductance intake.
Place the earth tap at the lowest inductance value
Aluminium is being welded with a drawing
problem, which causes incorrect arc ignition as
the wire is slowed down on knocking against
the piece.
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
The motor acceleration ramp is very low,
reaching a high speed in the initial priming
process.
Suitably
regulate
the
acceleration
ramp
potentiometer of the existing motor in the wire-feed
unit.
THE WELDING START IS VERY
AGGRESSIVE.
THERE ARE MANY
PROJECTIONS.
The wire length at onset of welding process is
too long.
Suitably regulate the existing final wire length
potentiometer in the wire-feed unit to obtain the
LEAST final wire length at the end of the welding
process.
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 DC and will be applied to the following points of the
circuit:
- Intake rectifier-Earth: Ra> 50 Mohms
- Outlet rectifier-Earth: Ra> 50 Mohms
- Switch l2 - Outlet rectifier: Ra> 50 Mohms
- Control circuit-Earth: Ra> 50 Mohms
In the event that lack of insulation is observed it is likely that this is due to the accumulation of metal
dust on the inside of the equipment.
BOTH AT THE BEGINNING AND END OF A REPAIR, BLOW THE INSIDE OF THE EQUIPMENT WITH
COMPRESSED AIR.
