Cebora PLASMA PROF 123 Manual De Instrucciones página 11

fig. 3
4. USE
Select type of work by means of button W: LED's N, O, P
corresponding to CUT, grid cutting (SELF -RESTART) and
GOUGE will glow.
Turn the equipment on by means of knob A (displays
U,V and LED's N,O,P will glow).
The following data will be rapidly displayed :
power source code (display U),
installed firmware version (display V),
name of assembled welding torch (display U and V).
Then display U will show wording LEN (welding torch
length) and on display V size (= 12 meters from suppli-
er) will be flashing.
If the welding torch length is different, the size must be
changed by means of knob Z.
After 5 seconds the selected value is stored and main-
tained every time power source is started.
If the initial setting is not correct, it is possible to change
the length by pressing simultaneously buttons W and Q
and selecting the required size with knob Z.
Now it is possible to set the correct working pressure by
pressing button Q (SET) and following instructions of S
and T LED's. LED S on indicates a low pressure while
LED T on indicates a high pressure. Keep down knob H
of the pressure reducing valve until both LED's are on
(correct pressure). Push down to lock this knob.
4.1 CUTTING ("CUT" OPERATING MODE)
With knob Z adjust the cutting current according to the
thickness to be cut by following the
instructions.
While the current is adjusted display V will show the
correct diameter of the nozzle to be used.
Connect the earth cable clamp to the workpiece to be
cut making sure that the clamp and the workpiece have
a good electric contact especially in case of painted or
oxidized plates or with insulating coatings. Do not con-
nect the clamp to the material to be removed
With a 20 to 45A cutting current and a 1.2 mm diam-
eter nozzle a cut can be made by placing the nozzle
directly on the workpiece (drag cut).
All manuals and user guides at all-guides.com
For currents higher than 45A a spring spacer or a 2-end
spacer must be used to avoid to put into direct contact
the nozzle or the nozzle protection with the workpiece to
be cut.
With the welding torch in automatic mode, keep a dis-
tance of approximately 4mm between the nozzle protec-
tion and the workpiece, as indicated in the cutting
tables..
Press the torch trigger to start the pilot arc.
If the cutting operation is not started, the pilot arc goes
out after 2 seconds; to restart it press the torch trigger
again. Keep the welding torch in a vertical position while
working.
When the cutting is finished and the torch trigger is
released air continues leaking from the welding torch
to assure the torch cooling.
It is recommended not to turn the equipment off
before this operation is over.
When using the welding torch in manual mode and
when holes are to be cut or cutting must be started from
the workpiece center the welding torch must be placed
in a slanted position and then slowly straightened up to
prevent melted metal from being sprayed onto the
nozzle protection (see fig.4). This operation must be
carried out when holes thicker than 3mm are to be cut.
When using the welding torch in automatic mode (see
fig. 5) follow strictly the instructions contained in the
cutting tables as for sagging, working height and maxi-
mum cutting thicknesses, which must comply with the
current.
When circular cuts are to be made we recommend to
use the caliper supplied on demand. Do not forget that
when using the caliper it may be necessary to follow the
above mentioned starting method.
To avoid excessive wearing of the electrode, swirl ring
and nozzle the pilot arc should not be kept on in the air
if not necessary.
cutting table
Once the operation is completed, turn the machine off.
4.2 GRID CUTTING (SELF-RESTART OPERATING
MODE)
Use this function to cut drilled plates or grids.
When cutting is completed, keep the knob pressed and
the pilot arc will restart automatically. Use this function
only if required, to avoid excessive wearing of the
electrode and the nozzle.
fig. 5
fig. 4
11