voestalpine bohler SABER 40 CHP Manual De Instrucciones página 25

- Connect up the compressed air supply with a suitable fitting
(4) to the air inlet (3) on the filter unit (2). The pressure must
be at least 5 bars with a flow rate of at least 115 litres per
minute.
- Screw-tighten the coupling on the pressure reducer.
- Connect the pipe (5) to the coupling (4).
- Insert the plug into the 230V socket.
- Switch on the system, ensuring the LED is working correctly.
If torch components are missing or have been assembled incor-
rectly, or the compressed air pressure is too low, or entirely
lacking, LEDs (8-9) turn on respectively to display the fault.
The generator is shut down until the fault is removed. Press the
gas test push button (10) in order to remove residual impurities
from the compressed air circuit, then lift and turn the knob to
adjust the pressure (7) until pressure-gauge (6) shows a pressure
reading of about 5.5 bars (carry out the operation keeping the
gas test button (10) pressed down, so as to make the adjust-
ment with air circulating in the piping).
- Set the value of the cutting current with the potentiometer
(11), keeping in mind the thickness to be dealt with.
- Grip the torch and lift the protection lever (12).
- Press for a moment the torch button (13) so as to generate the
pilot arc; release the control, checking that machine is cor-
rectly operating on the display panel. It is suggested to switch
off the pilot arc in order to prevent wear on the electrode
and the nozzle. If pilot arc is triggered without perfoming any
cutting action, the power source control unit will switch off it
after 6 seconds to prevent damage to the torch.
- Keep the torch at 90° on the piece.
- Press the torch button and strike the arc.
- Position the torch near the piece and begin cut-
ting, moving forward steadily.
(Consult the "SP 40" instruction manual).
3 SYSTEM PRESENTATION
3.1 General
Saber 40 chp is a user-friendly, compact generator for plasma
cutting.
Saber 40 chp uses compressed air as its only gas source, which
can be supplied from a normal compressor or from a suitably
sized centralized plant. It is able to carry out, cheaply, cuts of a
high quality up to a thickness of 12 mm in carbon steel, while
still keeping its weight and size very limited.
This optimum performance-to-weight ratio is made possible
thanks to the use of inverter technology.
The current is thus stable, and unaffected by variations in the
supply voltage, in the height of the cutting arc, in the progres-
sion speed and in the thickness of the metal to be cut. The Saber
40 chp is equipped with an automatic circuit for the reignition
of the pilot arc, that allows metal grill structures to be cut in the
best way.
There are safety systems that cut off the power circuit when the
operator comes into contact with live parts of the machine, as
well as controls to reduce the wear on the electrode and nozzle
at the moment of striking the cutting arc.
The ignition of the pilot arc takes place without the use of high
frequency, with an increase in the working life of the parts of the
torch subject to wear, and reduction in the mains interference.
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