31
GALAXY 3000 GE MV VRD
EN
5. ANOMALIES. PROBABLE CAUSES. POSSIBLE SOLUTIONS.
SYMPTOM. ANOMALY. PROBABLE CAUSE.
POSSIBLE SOLUTION.
The machine has no voltage in
one or all its vital elements.
Make sure there is voltage at the entry to the
machine, if not the tapping must be changed or
the supply hose repaired. It is advisable to see if
any magnetothermal has "blown".
ON/OFF switch faulty.
Replace ON/OFF switch.
GENERAL PROBLEM.
NOTHING WORKS.
Auxiliary transformer or electronic
plate are damaged.
Repair equipment.
LIMITER TRIPS.
Magnetothermal switch has low
gauge for the case. There may be
a short circuit, which is what
causes the limiter to trip.
Change the magnetothermal for another larger
gauge one. In the event that the electrical
installation has limited power, the welding work
must be tested at lower current levels.
DIFFERENTIAL
CIRCUIT BREAKER
TRIPS.
Active part of the machine has
connected with the housing.
Carry out insulation test between power supply
and housing. Check that no cable has derived
to the shell or the chassis.
AMBER LED ON.
Active protection system. Amber
light on. DL4 (Rth).
Equipment overheated, wait until the equipment
cools down. If it does not recover. Switch off the
equipment and check that there is continuity
between the ends of thermal switches th1, th2
and th4.
Excessive welding intensity for a
certain electrode.
Decrease welding current or change electrode
for one with larger diameter.
Use of reverse polarity.
Place electrode to negative pole.
THE ELECTRODE
BURNS IN TIG
WELDING
Lack of protection gas.
Regulate at an appropriate flow.
The equipment is positioned so
that it prevents correct ventilation.
Place the equipment in an area where the air is
constantly replaced.
THE EQUIPMENT
HEATS UP
ABNORMALLY.
THE THERMAL
PROTECTION
ACTIVATES
QUICKLY.
The fan does not work.
Replace the fan.
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.
BLOW THE INSIDE OF THE EQUIPMENT WITH COMPRESSED AIR.
The insulation-measuring device will have 500 V D.C. and will be applied to the following points of the circuit:
Power supply - Earth tap: Ra > 50 Mohms.
Welding - Earth tap: Ra > 50 Mohms.
Power 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.
