Cebora PowerPlasma 3035/M Betriebsanleitung Seite 9

Electrical:
1) In the event of a short-circuit between the nozzle and
electrode during arc striking
2) In the event of a short-circuit between the contacts of
the reed relay on circuit 22 (see exploded drawing).
3) When the electrode is worn to the point it must be
replaced.
These conditions block the machine, and are signalled by
the lit LED N.
4) In addition, this machine is equipped with automatic
selection of the supply voltage.
• 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 CP40.
• 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 60974.3 - 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 . PEAK.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.
The machine is equipped with automatic
voltage change.
I Max Max. absorbed current at the corresponding
1
current I and voltage U
2
I eff This is the maximum value of the actual cur-
1
rent absorbed, considering the duty cycle.
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
and voltage
2
.
2
.
2
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 .
1
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.
Press the torch trigger briefly to open the flow of com-
pressed air. Since the arc is not lit, air leaves the torch for
only 5 sec. Now adjust the pressure, shown on the pres-
sure 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-
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
may be determined by reading
1
.
1
1
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