Telwin SUPERPLASMA 83 HF Mode D'emploi page 5

for about 45 sec.
It is normally used:
- to cool the torch;
- when adjusting the pressure reading on the pressure gauge.
5 - Pressure regulator (plasma compressed air)
6 - Pressure gauge
- Press the air button to expel air from the torch.
- Adjust the knob: pull upwards to release it and then turn it to adjust
the pressure to the required value (5 bar).
- Read the required value (bar) on the pressure gauge and then press
the knob to lock the setting.
7 - Yellow indicator light: TORCH POWERED
Yellow LED indicating that the torch is powered:
- When it is on it means the cutting circuit is activated: Pilot Arc or
Cutting Arc "ON".
- It is off (cutting circuit disabled):
1 - when the torch button is NOT being pressed (standby status).
2 - while the torch button is pressed, under the following conditions:
during the PRE-AIR (0.8s) and POST-AIR (>45s) stages.
3 - if the pilot arc is not transferred to the piece within a maximum of
2 seconds.
4 - if the cutting arc is interrupted because the torch is too far from
the piece, if the electrode is worn out or if the torch is deliberately
taken away from the piece.
5 - If one of the SAFETY systems has been triggered.
8 - Red indicator light: THERMAL RELAY
Red LED on:
indicates overheating in one or more components of the power
circuit (3-phase transformer, chopper). Machine operation is
disabled, reset is automatic.
- Red indicator light: FAULTY POWER SUPPLY VOLTAGE
Red LED on:
indicates over- or under-voltage in the input power supply. Machine
operation is disabled, reset is automatic.
9 - Yellow indicator light: PHASE FAILURE
Yellow LED on:
Machine operation is disabled, reset is automatic.
10 - Yellow + red indicator light: AIR PRESSURE SAFEGUARD
YELLOW LED on simultaneously with RED LED for general alarm
(Fig. D-2 ( 8 ) ).
When these are on it means the air pressure is too low for the torch
to work properly.
During this phase machine operation is disabled.
Reset is automatic.
5. INSTALLATION
________________________________________________________
WARNING! BEFORE
OPERATIONS AND MAKING ELECTRICAL CONNECTIONS,
ALWAYS MAKE SURE THAT THE PLASMA CUTTING SYSTEM HAS
BEEN SWITCHED OFF AND DISCONNECTED FROM THE MAIN
POWER SUPPLY.
ELECTRICAL CONNECTIONS MUST BE CARRIED OUT ONLY AND
EXCLUSIVELY BY ESPERT OR SKILLED TECHNICIANS.
________________________________________________________
PREPARATION (Fig. E)
Unpack the machine, assemble the separate parts supplied with the
package.
Assembling the return cable-earth clamp (Fig. F)
HOW TO LIFT THE MACHINE
The machine should be lifted as shown in Fig. G. This holds for both initial
installation and for the entire life of the machine.
POSITIONING THE MACHINE:
The machine must be installed in a place where there are no obstructions
to the cooling air input and output apertures; at the same time, make sure
that there is no possibility of conductive powder, corrosive vapour or
moisture etc. being sucked into the machine.
Allow at least 250 mm of free space all around the machine.
________________________________________________________
WARNING! Prevent the machine from tipping up or shifting
dangerously, by positioning it on a level surface that is able to
support its weight.
________________________________________________________
CONNECTION TO THE MAIN POWER SUPPLY
- Before making any electrical connection whatsoever, check the power
source rating plate to make sure that the mains voltage and frequency
correspond with those at the place where the machine is to be
installed.
- The power source must be connected only and exclusively to a power
supply system with a neutral conductor connected to earth.
- In order to guarantee protection against indirect contact use RCD's of
the following types:
- Type A ( ).
- In order to satisfy the requirements of the EN 61000-3-11 (Flicker)
standard we recommend connecting the power source to interface
points of the main power supply that have an impedance of less than
Zmax = 0.2 ohm.
CARRYING OUT INSTALLATION
Plug and outlet
Connect the power supply cable to a standard (3P + T) plug of
appropriate capacity and prepare a power supply outlet fitted with fuses
or an automatic circuit-breaker; the corresponding earth terminal should
be connected to the (yellow-green) earth conductor of the power supply.
Table 1 (TAB.1) shows the recommended sizes (in amps) of the delayed
mains fuses, to be chosen according to the maximum rated current
output from the power source, and to the rated power supply voltage.
Changing the voltage (version with I max £
For machines designed for two power supply voltages, it is necessary to
set the locking screw for the knob of the voltage change switch to the
position corresponding to the mains voltage that is actually available
(FIG. H).
Changing the voltage (version with I max ³
To change the voltage it is necessary to remove the panel and, inside the
power source, set the voltage change terminal board so that the
connection as indicated on the corresponding indicator plate matches
the available power supply voltage (Fig. I).
Re-assemble the panel carefully, using the corresponding screws.
Warning!
The factory (default) setting for the power source is the highest voltage in
the available range, e.g.
U 400V Ü Default factory setting for voltage.
1
________________________________________________________
WARNING! Failure to comply with the above rules will render
the manufacturer's (class I) safety system ineffective, with
consequent serious risks to people (e.g. electric shock) and to
property (e.g. fire).
________________________________________________________
CUTTING CIRCUIT CONNECTIONS
________________________________________________________
WA R N I N G ! B E F O R E M A K I N G T H E F O L L OW I N G
CONNECTIONS MAKE SURE THAT THE POWER SOURCE HAS
BEEN SWITCHED OFF AND DISCONNECTED FROM THE MAIN
POWER SUPPLY.
Table 1 (TAB. 1) shows the recommended values for the return cable (in
2
mm ), based on the maximum current output from the machine.
________________________________________________________
Compressed air hookup (FIG. L).
- Prepare a compressed air distribution line with minimum pressure and
capacity as given in table 2 (TAB. 2), for those models where it is
provided.
IMPORTANT!
Do not exceed the maximum input pressure of 8 bar. Air containing
substantial quantities of moisture or oil may cause excessive wear on the
consumable parts or damage the torch. If the quality of the available
compressed air is doubtful, we recommend using an air dryer, to be fitted
upstream of the input filter. Use a flexible pipe to connect the compressed
air supply to the machine, fitting one of the supplied connectors to the
input air filter on the back of the machine.
Connecting the cutting current return cable.
Connect the cutting current return cable to the piece to be cut or to the
metal support bench, taking the following precautions:
- Make sure there is a good electrical contact, especially when cutting
sheet that has an insulated coating or is oxidised etc.
- Make the earth connection as close as possible to the cutting area.
- Using metal structures that are not part of the workpiece as the cutting
current return conductor may endanger safety and result in an
inadequate cut.
- Do not make the earth connection to the part of the piece that is to be
cut away.
Connecting the plasma cutting torch (FIG. B, C) (where provided).
Insert the male terminal of the torch into the centralised connector on the
front panel of the machine, matching the polarisation key. Tighten the
locking ring nut, clockwise as far as it will go, to ensure air and current
passage with no leaks.
For some models the supplied torch is already connected to the power
source.
IMPORTANT!
Before starting a cutting operation, make sure the consumable parts
have been fitted correctly by inspecting the head of the torch, as
described in the chapter on "TORCH MAINTENANCE".
________________________________________________________
WARNING!
USING THE PLASMA CUTTING SYSTEM SAFELY
Only the torch model as envisaged, coupled with the corresponding
power source as indicated in TAB. 2, can guarantee effective
protection by the safety system provided by the manufacturer
(interlocking system).
- DO NOT USE other makes of torch and related consumable parts.
- DO NOT ATTEMPT TO COUPLE THE POWER SOURCE with torches
built for cutting or welding procedures that are not contemplated in
- 5 -
50A)
2
70A)
2