Elettro CF MMA 148, Инструкция по эксплуатации

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the machine and to close the gas cylinder valve.
3.2.2 Precautions to take while servicing:
2.6.1 Electrode preparation 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.
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.
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 REMEDY
The welding Switch in O position Switch to I
machine does not position
supply current;
completely
CAUTION: HOT FLYING METAL PARTICLES can injure
persons, start fires and damage equipment. TUNGSTEN
CONTAMINATION can lower the welding quality.
inoperative
Burnt fuses Replace
fuses
- Shape tungsten electrode only on grinder with proper guards
in a safe location, wearing proper face, hand, and body
protections.
Plug not correctly Connect it
connected properly
- Shape tungsten electrodes on a fine grit, hard abrasive wheel
used only for tungsten shaping.
_____
The welding Incorrect supply See 2.2.3
- Grind the end of the tungsten electrode to a taper-shape for a
length of 1,5 -2 electrode diameters (picture 2).
machine does voltage: yellow
not supply current signal lights up
but the fan
3 MAINTENANCE AND CHECK UP works
_____
Thermostat is open. Wait approx. 3.1 GENERAL NOTES
Yellow block signal 5-6 min.
WARNING: ELECTRIC SHOCK CAN KILL.
lights up.
- Do not touch live electrical parts.
- Turn off welding power source and remove input power plug
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 IEC 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 IEC 60974-1.
- After rewinding and/or the replacements of parts, the no-load
voltage should not exceed the values given in 11.1 of IEC
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.