18
GB/IE/NI
• Using the device
• Operation
1. Set the plasma cutter
1
up in a dry and
well ventilated area.
2. Position the machine in the vicinity of the
workpiece.
3. Press the on/off switch
17
.
4. Clamp the ground terminal
4
to the
workpiece to be cut and make sure that
there is a good electrical contact.
5. Set the cutting current on the current
controller
13
. If the arc beam is inter-
rupted the cutting current must be set
higher if necessary. If the electrode burns
through frequently, then the cutting
current must be set lower.
6. Position the plasma cutter
8
on the
workpiece so that the burner sleeve
8c
is
free and that a blowback of the molten
metal is not possible. Press the plasma
burner button
8a
. The transmitted cutting
arch is ignited on the edge of the sheet
in this manner.
7. Start cutting slowly and then increase the
speed in order to achieve the desired
cutting quality.
8. The speed must be regulated so that a
good cutting capacity can be achieved.
The plasma beam creates a straight arch
(stainless steel, aluminium) or a 5° arch
of approach (soft steel).
To cut in the manual cutting mode,
pull the overlying burner across the
workpiece while maintaining a
constant speed. To achieve the perfect cut, it
is important for the material thickness to
comply with the correct cutting speed. If the
cutting speed is too low, the cutting edge will
be blunt due to the severe heat input.
The optimal cutting speed is achieved once
the cutting jet is slightly inclined towards the
rear while cutting. If the plasma burner
button
8a
is released, the plasma jet goes
out and the power source switches off. The
gas continues to flow for approx. 5 seconds
in order to cool the burner. The same
process is followed when the workpiece is
pulled out with a pressed plasma burner
button
8a
. During the gas post-flow time,
the plasma cutter
1
must not be switched off
to avoid damaging the plasma burner
8
as
a result of overheating.
ATTENTION!
f
The device must be left on for approx.
2-3 minutes once the cutting work has
been completed. The cooler cools the
electronics.
• Types of plasma cutting
Drag cutting
Hold the tip of the burner sleeve
8c
low over
the workpiece and press the plasma burner
button
8a
. Now move the burner sleeve until
8c
there is contact with the workpiece and
the cutting arch is fixed. Once the cutting
arch has been generated, move the plasma
burner
8
in the desired direction. Makes
sure that burner sleeve is slightly
8c
angled
and that contact with the workpiece is
maintained. This working method is called
drag cutting. Avoid quick movements. A sign
of quick movements is sparks that fall of the
top of the workpiece. Move the plasma
burner at a
8
speed in which the spark
accumulation is concentrated on the bottom
side of the workpiece. Ensure the material is
completely separated prior to continuing with
this process. Set the necessary drag speed.
Using the device
327358_Plasmaschneider_PPS_40_B2_content_LB6_IE_NI.indb 18
06.09.2019 12:41:02
