Safety Devices - Cebora POWER PLASMA 3035/M Manual De Instrucciones

N) Blocked LED; lights when hazardous conditions arise.
O) LED that lights when the "SELF-RESTART PILOT"
function is active
P) Push-button to activate and deactivate the "SELF-
RESTART PILOT" function.
Q) Plasma torch.

2.2 SAFETY DEVICES

This system comes equipped with the following safety
devices:
Overload cutout:
To avoid overload while cutting.
The LED G (see fig 1) lights when active.
Pneumatic:
Located on the torch inlet to prevent low air pressu-
re. The LED L lights when tripped (see fig.1).
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 THE TECHNICAL SPECIFI-
CATIONS LISTED ON THE MACHINE PLATE.
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 regarding the machine.
Single-phase static transformer-rectifier fre-
quency converter.
Drooping characteristic.
Suitable for plasma cutting.
Torch type. Type of torch that may be used with this ma-
chine.
U0. PEAK. Secondary open-circuit voltage. Peak value.
X Percentage duty cycle.
The duty cycle expresses the percentage of
10 minutes for which the machine may work
at a certain current I2 and voltage U2 without
overheating.
I2 Cutting current.
10
U2 Secondary voltage at cutting current I2.
This voltage is measured when cutting with
the gas nozzle in contact with the workpie-
ce. If this distance increases, the cutting
voltage also increases and the duty cycle
X% may drop.
U1 Rated supply voltage.
1~50/60Hz 50- or 60-Hz single-phase power supply.
The machine is equipped with automatic vol-
tage change.
I1 Max Max. absorbed current at the corresponding
current I2 and voltage U2.
I1 eff This is the maximum value of the actual cur-
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 suita-
ble for use outdoors in the rain, unless it is
protected.
S
. Suitable for working in hazardous envi-
ronments.
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 person-
nel. 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
compressor 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 cylinder must be equipped with a pressure regula-
tor. Never connect a compressed air cylinder directly
to the regulator on the machine! The pressure could
exceed the capacity of the regulator, which might ex-
plode!
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 I1 ab-
sorbed by the machine.
The absorbed current I1 may be determined by reading
the technical specifications shown on the machine under
the available supply voltage U1.
Any extension cords must be sized appropriately for the
absorbed current I1.