Setting At Work - Elettro Plasma 127 Betriebsanleitung

This machine is suitable for genuine ELETTRO CF
plasma torches type P70 and P150 only either manual or
a utomatic an d we do not assume any responsibility in
case that a different kind
N .B. Never lift the mach ine by the handle, but always by
the eyebolt.

3.2 SETTING AT WORK

Skilled personnel must install the unit. All fittings must
be in conformity with the existing rules and in full
compliance with safety regulations.
Connect the air feed to fitting on the air pressure reduction
unit N (pict. 2) making sure that pressure is 88PSI (6bar or
KPaX100) at least with a minimal capacity of 420 CFH (200
litres/min). Should air feed come from a pressure reducing
unit of a compressor or of a centralised plant, the reducing
unit should be adjusted at the highest out put pressure which
should not exceed 120 PSI (8bar or KPa x100). Should air
feed come from a compressed air bottle, this should be
provided with a pressure
compressed air bottles directly to the reducing unit!
Pressure may exceed the reducing unit capacity and
then explode!
Check that the mains power supply matches that indicated
on the technical date plate. Connect supply cable P (pict.2):
the yellow-green wire of the cable must be connected to an
efficient earth plug of the system, the remaining wires should
be connected to the feed line by means of a switch placed, if
possible, close to the cutting area so as to switch the unit off
quickly if necessary.
The magnetothermic switch capacity or of fuses in series
with switch should be equal or above the current I
b y the unit. Current I absorbed is known by reading the
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technical specifications on the unit i.e. feed voltage U
a vailable. Any extensions should have adequate sections for
current absorbed I .
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3.3 USE
Before using the equipment, read the s
CENELEC HD 407 and CEI 26.11 - CENELEC HD 433
carefully, and make sure all cable insulation is intact.
Turn on the machine using the knob E. This step w
confirmed when the pilot lamp C lights.
The motor-driven fan is controlled by a thermostat and
works only when the power source needs to be cooled.
Press the torch trigger very briefly to open the gas flow.
Make sure that, in these conditions, the pressure reading on
the pressure gauge J is about 65 and 69 PSI (4,5 and 4,7
bar or 4,5÷4,7 KPaX100) if not, adjust using the knob M of
the pressure regulator, then lock the knob by pressing it
downward.
Connect the grounding cable clamp to the workpiece, making
sure that the clam p and workpiece have a good electrical
contact, especially when using painted, oxidized, or insulated
metal.
D o not connect the clamp to the part of the material that
must be removed.
Use the knob D to select the cutting current based on the
thickness to be cut, following the guidelines below:
Aluminum:
Soft and stainless steel: up to 5 mm
up to 20 mm
up to 30
The machine is equipped with constant cutting current
regulation, thus the user may seek out the correct value
of torch is used.
regulator; never connect
absorbed
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tandards CEI 26/9 -
3÷4 mm 40÷50A
8÷10 mm 80÷90A
15÷18 mm 110÷120A
40÷50A
80÷90A
mm 110÷120A
based on the cutting conditions.
Current values higher than those indicated will not jeopardize
smooth operation of the
improve the cutting quality because they reduce dross
th e ed ge s of the w rkpiece.
T he hole diameter of the torch nozzle
c urrent, and mus be as follows (also
panel of the machine):
With 20/50A
40/90A
80/120A nozzle ø 1.6 mm
With cutting currents from 20 to 50A and a ø 1 or 1.1 mm
nozzle, you may rest the nozzle directly on the material to be
cut.
The red pilot light I on the front panel indicates that contact
cutting is forbidden. This occurs when the cutting voltage is
set to greater th
In other conditions, you must use a spacer
the nozzle in direct contact with the workpiece.
With a torch to be used in automatic
distance of approximately 4/5 mm
the workpiece.
Press the torch trigger to light the pilot arc.
If cutting does not begin after 2 seconds, the pilot arc will go
out; press the
trigger again to re-light it.
Hold the torch upright while cutting.
Once cutting is complete and you have released the trigger,
air will continue to escape from the torch to cool it. It is
recommended not to shut the machine off until this process
is completed.
W
hen cutting holes or beginning a cut in the center of the
workpiece, you must hold the torch at an angle and
straighten it slowly, so that molten metal is not sprayed onto
the nozzle (see pict.4). This should be carried out when
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cutting holes in workpieces more than 3 mm thick.
When making large, circular cuts, we recommend using the
special
compass supplied upon request. It is important to
remember that you must follow the starting techniqu
d escribed above when using the compass.
Do not keep the
u nnecessary consumption of
nozzle.
ill be
Shut off the machine when you have finished working.
3.4 GOUGING
This operation allows you to remove defective welds,
separate welded parts, prepare edges, etc.
To proceed, you must use the Ø 3 mm nozzle and the
relevant protection.
The current value to be used ranges from 70 to 110A, based
on the thickness and amount of material to be removed. It
must be carried out by holding the torch at an angle (pict. 5),
and moving towards the molten material so that the gas
escaping from the torch pushes it away.
The torch angle in relation to the workpiece depends on the
desired level of penetration. Since the molten dross
produced by this procedure tends to stick to the gas
nozzleholder and nozzle, clean them frequently to avoid
problems (dual arc) that can destroy the nozzle in the space
of a few seconds.
C onsidering the high level of radiation (infrared and ultra-
violet) emitted during th
o perator and anyone else in the
follow adequate, careful protective me
S hut off the machine when you ha
4 CUTTING ERROR
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machine or torch, and at times may
o
depends on the cutting
t shown on the front
nozzle ø 1.1 mm standard or long
nozzle ø 1.3 mm
an 50 A.
betw een the nozzle and
pilot arc lit in the air unnecessarily, to avoid
the electrode, diffuser and
is procedure, we recommend that the
vicinity of the work-place
asures.
ve finished working.
S
along
to avoid placing
mode, maintain a
e