Cebora POWER PLASMA 2025/M Betriebsanleitung Seite 9

A) One/two flashes followed by a 2-second pause means a
high/low piloting voltage of the IGBT. In this case, swit-
ch off the machine and contact the Cebora S.p.A. tech-
nical service.
B) Three flashes, followed by a 2-second pause means the
reed contact of the power circuit is in short circuit during
start. In this case, switch off the machine and contact the
Cebora S.p.A. technical service to change the reed.
C) Four flashes followed by a 2-second pause mean there is
a short circuit in the torch (e.g., between electrode and
nozzle) or between the positive and negative in the gene-
rator. Switch off the machine and remedy the problem if
this is located in the torch; otherwise contact the Cebora
S.p.A. technical service.
D) On steady means the start button has been pressed
when the machine was on. Release the button.
Moreover, the torch has an electric safety device on the
torch body, to prevent hazardous power voltages when the
nozzle, electrode, diffuser or nozzle holder are replaced.
• Do not remove or short-circuit the safety devices.
• Use only original spare parts.
• Always replace any damaged parts of the machine
with original materials.
• Use only CEBORA torches type CP41 C.
• Do not run the machine without its housings. This
would be dangerous to the operator and anyone else
in the work area, and would prevent the machine from
being cooled properly.
2.3 EXPLANATION OF TECHNICAL SPECIFICATIONS
This machine is manufactured according to the following
international standards: IEC 60974.1 - IEC 60974.7 - IEC
60974.10 CL. A - IEC 61000-3-11 - IEC 61000-3-12.
N°........ Serial number.
Always indicate this for any request regar
ding the machine.
Single-phase static transformer-rectifier
frequency converter.
........... Drooping characteristic.
....... Suitable for plasma cutting.
T .Type of torch that may be used with this
ORCH TYPE
machine.
U . Secondary open-circuit voltage. Peak value.
0
X............. Percentage duty cycle.
The duty cycle expresses the percentage
of 10 minutes for which the machine may
work at a certain current I
U without overheating.
2
I ........... Cutting current.
2
U ........... Secondary voltage at cutting current I
2
This voltage is measured when cutting with
the gas nozzle in contact with the workpiece.
If this distance increases, the cutting
voltage also increases and the duty
cycle X% may drop.
U .......... Rated supply voltage
1
1~ 50/60Hz.50- or 60-Hz single-phase power supply.
I Max
1
corresponding
I eff This is the maximum value of the actual cur-
1
rent absorbed, considering the duty cycle.
and voltage
2
Max. absorbed current at the
current I and voltage U
2
This value usually corresponds to the capa-
city of the fuse (delayed type) to be used as
a protection for the equipment.
IP23S...... Housing protection rating.
Grade 3 as the second digit means that
this equipment may be stored, but it is not
suitable for use outdoors in the rain, unless it
is protected.
S
.......... Suitable for working in hazardous environments.
NOTE: The machine has also been designed for use in
environments with a pollution rating of 3. (See IEC 664).
2.4 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 system air contains a considerable amount of
moisture and oil, it is best to use a drying filter to avoid
excessive oxidation and wear of the consumer parts,
damaging the torch and reducing the cutting speed
and quality.
If the air supply comes from a pressure regulator of a com-
pressor 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 cylin-
der must be equipped with a pressure regulator. Never
connect a compressed air cylinder directly to the regu-
lator 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
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
3 USE
Make sure the trigger has not been pressed.
Turn the machine on using the switch C. The warning
.
lamp D will light to indicate that the machine is on.
2
Press the torch button to start the pilot arc.
Now adjust the pressure, shown on the pressure gauge F,
to 3.5 bar (0.35 MPa) using the knob E on the regulator,
then lock the knob by pressing it downward.
Connect 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-
2
tective conductor, the connection must be as direct as
possible and use a wire of at least the same size as the
may be determined by reading
1
.
1
.
1
1
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