Elettro ECF-1400 Betriebsanleitung Seite 7

return wire terminal or a second earth terminal close by.
- All possible precautions must be taken in order to avoid stray
currents.
- Connect gas pipe to pressure reducer output connected to
an ARGON cylinder.
- Open the valve on the torch and regulate gas capacity.
- Use a 2% thoriated tungsten electrode chosen according to
table.
electrode ø
2% thoriated tungsten
(red band)
ø 1 mm (0,040")
ø 1,6 mm (1/16")
- Make sure that mains voltage corresponds to the voltage of
the welding machine.
- Connect the supply cable: when mounting a plug, make sure
that its capacity is adequate and that the yellow-green wire
of the supply cable is connected to the earth plug pin.
- Any extensions should have adequate sections for absorbed
I
.
current
1
WARNING: ELECTRIC SHOCK CAN KILL!
- Do not touch live electric parts.
- Do not touch weld output terminals when unit is energized.
- Do not touch torch and earth clamp at the same time.
- Turn on the machine on with switch F (picture 1).
- Regulate current according to the work to be carried out,
then open the valve placed on the torch to allow the
emission of gas. Start the arc by contact, with a determined
rapid movement.
CAUTION: do not use commercial ignition devices.
When you have finished to weld, always remember to turn off
the machine and to close the gas cylinder valve.
2.7.1 Electrode preparation
It is necessary to pay special attention to the preparation of
the electrode point, grinding it so as to obtain vertical markings
as shown in picture 2.
CAUTION: HOT FLYING METAL PARTICLES can injure
persons, start fires and damage equipment. TUNGSTEN
CONTAMINATION can lower the welding quality.
- Shape tungsten electrode only on grinder with proper guards
in a safe location, wearing proper face, hand, and body
protections.
- Shape tungsten electrodes on a fine grit, hard abrasive
wheel used only for tungsten shaping.
- Grind the end of the tungsten electrode to a taper-shape for
a length of 1,5 -2 electrode diameters (picture 2).
3. MAINTENANCE AND CHECK UP
3.1 GENERAL NOTES
WARNING: ELECTRIC SHOCK CAN KILL.
- Do not touch live electrical parts.
- Turn off welding power source and remove input power plug
direct current
negative electrode
(Argon)
up to 60A
60 ÷ 160A
from socket before maintenance and servicing.
MOVING PARTS can cause serious injury.
- Keep away from moving parts.
HOT SURFACES can cause severe burns.
- Allow the cooling of the unit before servicing.
3.2 WELDING MACHINE MAINTENANCE
Experience has shown that many fatal accidents originated
from servicing which had not been perfectly executed. For this
reason, a careful and thorough inspection on a serviced
welding machine is just as important as one carried out on a
new welding machine.
Furthermore, in this way manufacturer can be protected from
being held responsible for defects when the fault is someone
else.
3.2.1 Prescriptions to follow for servicing:
- After rewinding the transformer or the inductance, the
welding machine must pass the voltage test applied
according to that indicated in table 4 of the EN 60974-1.
- If no rewinding is done, a welding machine which has been
cleaned and/or reconditioned must pass a voltage test
applied with voltage values equal to 50% of the values given
in table 4 of EN 60974-1.
- After rewinding and/or the replacements of parts, the no-load
voltage should not exceed the values given in 11.1 of EN
60974-1.
- If the servicing is not done by the manufacturer, the repaired
welding machines which underwent replacements or
modifications of any component should be labelled in a way
such that the identity of the person having serviced is clear.
3.2.2 Precautions to take while servicing:
AN EXCESSIVE PRESSURE can break the circuit board.
Use only minimal pressure and gentle movements when
disconnecting or connecting board plugs and removing or
installing board.
INCORRECT INSTALLATION or misaligned plugs can
damage circuit boards.
Check that plugs are properly installed and aligned before
reinstalling the cover.
3.3 TROUBLE SHOOTING
DEFECT PROBABLE CAUSE
The welding Switch in OFF position
machine does not
supply current;
completely
inoperative
Burnt fuses
Plug not correctly
connected
The welding Incorrect supply
machine does voltage: yellow
not supply current signal lights up
but the ventilator
works
Thermostat is open.
Yellow block signal
lights up.
7
REMEDY
Switch to ON
position
Replace
fuses
Connect it
properly
_____
See 2.2.3
_____
Wait approx.
5-6 min.