Elettro CF 483, Instructions Manual

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nozzle.
y
Make sure that the new electrode and nozzle to be
mounted are thoroughly clean and degreased.
y
Always use original spare parts to avoid damaging
the torch.
5. MAINTENANCE
Always cut off the power supply to the machine before any
operation, which must always be carried out by qualified
personnel.
5.1. GENERATOR MAINTENANCE
In the case of maintenance inside the machine, make sure
that the switch
N
is in position "O" and that the power cord
is disconnected from the mains.
Also make sure that there is no voltage at the ends of the
IGBT group capacitors.
Even though the machine is equipped with an automatic
condensation drainage device that is tripped each time the
air supply is closed, it is good practice to periodically make
sure that there is no condensation accumulated in the
water trap
O
(pict. 2).
It is also necessary to periodically clean the interior of the
machine from the accumulated metal dust, using
compressed air.
5.2. TORCH MAINTENANCE (See pict. 8)
Replacement of consumable parts
The parts subject to wear are electrode
17
, diffuser
18
and
nozzle
19
. All parts may be only replaced after loosening
nozzle holder
20
. Electrode
17
should be replaced when a
1/16" (1,5 mm) deep crater is created in the middle (see
picture 6). Nozzle
19
should be replaced when its central
hole is damaged or enlarged in comparison with the new
part (see picture 7).
The use of a worn electrode quickly wears out the nozzle.
When the electrode is worn, the power cut of the machine
is reduced. A delayed replacement of electrode and nozzle
causes overheating of consumable parts and reduces the
life of diffuser
18
. Make sure that after replacing it, nozzle
holder
20
is tight enough.
ATTENTION! Nozzle holder 20 should be screwed on
head only when electrode 17, diffuser 18 and nozzle 19
are assembled.
5.3. PRECAUTIONS AFTER REPAIRS.
After making repairs, take care to organize the wiring so
that there is secure insulation between the primary and
secondary sides of the machine. Do not allow the wires to
come into contact with moving parts or those that heat up
during operation. Reassemble all clamps as they were on
the original machine, to prevent a connection from
occurring between the primary and secondary circuits
should a wire accidentally break or be disconnected.
Also mount the screws with geared washers as on the
original machine.