Smart 400 TIG Pulse
33
5. ANOMALIES. PROBABLE CAUSES. POSSIBLE SOLUTIONS.
SYMPTOM. ANOMALY.
PROBABLE CAUSE.
POSSIBLE SOLUTION.
GENERAL PROBLEM.
NOTHING WORKS
.
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".
Incorrect supply voltage.
Check supply voltage.
ON/OFF switch faulty.
Replace ON/OFF switch.
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. 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 EQUIPMENT TURN
ON AND OFF
CONSECUTIVELY.
Over-voltage in the mains or
generating set.
Verify the generating set adjustment.
Verify the mains voltage and connections
condition.
IT CAUSES NOISE
Loose metal casing.
Review and screw casing.
Damaged or poorly attached fan.
Examine the fan.
IF THE GREEN
INDICATOR IS ON THE
APPLIANCE DOES NOT
WELD
Active protection system. Amber light
on.
Equipment overheated, wait until the equipment
cools down.
Supply voltage outside rated margin. Change
supply tap.
THE ELECTRODE BURNS
IN TIG WELDING
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.
Lack of protection gas.
Regulate at an appropriate flow.
THE EQUIPMENT HEATS
UP ABNORMALLY.
THE THERMAL
PROTECTION ACTIVATES
QUICKLY.
The equipment is positioned so that it
prevents correct ventilation.
Place the equipment in an area where the air is
constantly replaced.
The fan does not work.
Replace the fan.
The equipment is located in a very
hot environment.
Avoid positioning where there is direct exposure
to the sun.
There is a loose connection inside the
equipment.
Review the power electrical connections.
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:
- 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.
