gala gar Smart 400 TIG Pulse Manuel Technique D'instructions page 33

5. ANOMALIES. PROBABLE CAUSES. POSSIBLE SOLUTIONS.
SYMPTOM. ANOMALY.
GENERAL PROBLEM.
NOTHING WORKS
.
LIMITER TRIPS
THE EQUIPMENT TURN
ON AND OFF
CONSECUTIVELY.
IT CAUSES NOISE
IF THE GREEN
INDICATOR IS ON THE
APPLIANCE DOES NOT
WELD
THE ELECTRODE BURNS
IN TIG WELDING
THE EQUIPMENT HEATS
UP ABNORMALLY.
THE THERMAL
PROTECTION ACTIVATES
QUICKLY.
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 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
PROBABLE CAUSE.
The machine has no voltage in one
or all its vital elements.
Incorrect supply voltage.
ON/OFF switch faulty.
Magnetothermal switch
gauge for the case. There may be a
short circuit, which is what causes the
limiter to trip.
Over-voltage in
generating set.
Loose metal casing.
Damaged or poorly attached fan.
Active protection system. Amber light
on.
Excessive welding intensity for a
certain electrode.
Use of reverse polarity.
Lack of protection gas.
The equipment is positioned so that it
prevents correct ventilation.
The fan does not work.
The equipment is located in a very
hot environment.
There is a loose connection inside the
equipment.
THE ELECTRONIC BOARDS WHEN MEASURING THE INSULATION.
BLOW THE INSIDE OF THE EQUIPMENT WITH COMPRESSED AIR.
CONNECTED TO THE WELDING CONNECTORS.
Smart 400 TIG Pulse
POSSIBLE SOLUTION.
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".
Check supply voltage.
Replace ON/OFF switch.
has low Change the magnetothermal for another
larger gauge one. It is important for the
magnetothermal switch to have a characteristic
slow type curve. In the event that the electrical
installation has limited power the welding work
must be tested at lower current levels.
the mains or Verify the generating set adjustment.
Verify the mains voltage and connections
condition.
Review and screw casing.
Examine the fan.
Equipment overheated, wait until the equipment
cools down.
Supply voltage outside rated margin. Change
supply tap.
Decrease welding current or change electrode
for one with larger diameter.
Place electrode to negative pole.
Regulate at an appropriate flow.
Place the equipment in an area where the air is
constantly replaced.
Replace the fan.
Avoid positioning where there is direct exposure
to the sun.
Review the power electrical connections.
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