Cebora PC 6060/T Manual De Instrucciones página 10

IP23 C. Protection rating for the housing.
Grade 3 as the second digit means that this
equipment is suitable for use outdoors in the
rain.The additional letter C means that the
equipment is protected against access to
the live parts of the power circuit by a tool
(diameter 2.5 mm ).
S
. Suitable for use in high-risk environments.
NOTES: The machine has also been designed for use in
environments with a pollution rating of 3. (See IEC 664).
2.5 START-UP
The machine must be installed by qualified personnel.
All connections must be made in compliance with
current safety standards and full observance of safety
regulations (see CEI 26-23 - IEC TS 62081).
Connect the air supply to the fitting B.
If the air supply comes from a pressure regulator of a
compressor or centralized system, the regulator must be
set to an output pressure of no more than 8 bar (0.8 Mpa).
If the air supply comes from a compressed air cylinder,
the cylinder must be equipped with a pressure regulator.
Never connect a compressed air cylinder directly to the
regulator on the machine! The pressure could exceed
the capacity of the regulator, which might explode!
Connect the power cord A : the yellow-green cable wire
must be connected to an efficient grounding socket on
the system. The remaining wires must be connected to
the power supply line by means of a switch placed as
close as possible to the cutting area, to allow it to be shut
off quickly in case of emergency.
The capacity of the cut-out switch or fuses installed in
series with the switch must be equal to the current I
absorbed by the machine.
The absorbed current I
ding the technical specifications shown on the machine
under the available supply voltage U
Any extension cords must be sized appropriately for the
absorbed current I max.
1
3 USE
Make sure the trigger has not been pressed.
Turn the machine on using the switch C. The warning
lamp V will light to indicate that the machine is on.
Press the torch trigger briefly to open the flow of com-
pressed air. Under this condition set the pressure shown
by the pressure gauge F, at 4,7 bar (0.47 MPa) for Art. 355
and 5 bar (0,5 MPa) for Art. 357 by means of the reducer
knob E, and then lock the knob by pushing it down.Con-
nect the grounding clamp to the workpiece.
The cutting circuit must not be deliberately placed in
direct or indirect contact with the protective wire except
in the workpiece.
If the workpiece is deliberately grounded using the pro-
tective conductor, the connection must be as direct as
possible and use a wire of at least the same size as the
cutting current return wire, and connected to the work-
piece at the same point as the return wire using the return
wire clamp or a second grounding clamp placed in the
immediate vicinity. Every precaution must be taken to
avoid stray currents.
Use the knob M to select the cutting current.
10
eff. may be determined by rea-
1
.
1
Art. 355:
use nozzle ø 1 up to 45 A and 1,2 from 45 to 60A.
With nozzle ø1 a contact cutting can be made; the recom-
mended voltage should not be exceeded to avoid dama-
ging the nozzle port because this would produce a very
poor quality cut.
With nozzle ø 1,2 and 45 to 60 A currents use the two
faces spacer Art. 1404.
Art 357:
use nozzle ø 1,1 up to 45 and 1,3 from 20 to 100 A.
With nozzle ø1,1 a contact cutting can be made; the
recommended voltage should not be exceeded to avoid
damaging the nozzle port because this would produce a
very poor quality cut.
With nozzle ø 1,3 and 45 to 100 A currents use the two
faces spacer Art. 1408 or spring Art.1386.
Make sure that the grounding clamp and workpiece have
a good electrical contact, especially with painted, oxidi-
zed or insulated sheet metal.
Do not connect the grounding clamp to the part of the
material that is to be removed.
Press the torch trigger to strike the pilot arc.
If cutting does not begin within 2 seconds, the pilot arc
goes out; press the trigger again to re-strike it.
Hold the torch upright while cutting.
When you have finished cutting and released the trigger,
air will continue to leave the torch for approximately 100
seconds to allow the torch to cool down.
It is best not to turn the machine off until this cool-
down period is complete.
Should you need to make holes or begin cutting from the
center of the workpiece, you must hold the torch at an
angle and slowly straighten it so that the nozzle does not
eff. spray molten metal (see fig. 2). This must be done when
1
making holes in pieces more than 3 mm thick.
During automatic operation (see fig. 3), hold the nozzle
6/7 mm away from the workpiece. After the hole has been
made, move it to a distance of approximately 3/4 mm.
For thicknesses greater than 6/8 mm, the material must
be perforated before cutting.
When making circular cuts, we recommend using the
special compass available upon request. It is important to
remember that use of the compass may make it neces-
sary to use the starting technique described above (fig.2).
Do not keep the pilot arc lit in the air when not needed, to
avoid unnecessary consumption of the electrode, swirl
ring or nozzle.
Turn the machine off when the task is completed.
To cut perforated or grid metal, activate the "Pilot self
fig. 3
fig. 2