Installation; Machine Positioning - Telwin PLASMA 41 XT Bedienungsanleitung

permitted limits.
When the led is intermittent it indicates the consumables are
malfunctioning and the causes can be:
- worn consumables;
- consumables assembled incorrectly or missing;
- faulty torch;
- air pressure too low or no air in torch.
Signalling disappears after a correct cutting cycle.
4 - Yellow led signalling voltage present in torch.
When on, it indicates the cutting circuit is enabled (machine outlet
energised):
Pilot Arc or Cutting Arc "ON".
Output is powered when the torch button is pressed and there is no
alarm status.
The machine output is not powered in the following cases:
- when the torch button is NOT activated (standby status with low
energy consumption);
- during POST AIR cooling phase;
- if the pilot arc is not transferred to the piece within a maximum of
2 seconds;
- if the cutting arc shuts off due to excessive piece torch distance;
- for excessive wear of the electrode or forced distancing of the
torch from the piece;
- if a SAFETY system or an ALARM activates.
5 - Green led signalling presence of mains voltage and auxiliary
circuits powered.
The control and service circuits are powered.
CONTROL PANEL (Fig. C2)
1 - Adjustment knob:
In any mode, it allows continuous current adjustment.
2 - Yellow led signalling a general or warning alarm of
consumables.
When on and fixed, it indicates overheating of some power circuit
components, or a malfunction on the inlet power supply voltage
(over or undervoltage).
OVER or UNDERVOLTAGE: blocks the machine if the power supply
voltage is out of range +/- 15% compared to the plate value.
Resetting is automatic (switching off the yellow led) after one of
the malfunctions among those indicated above returns within the
permitted limits.
When the led is intermittent it indicates the consumables are
malfunctioning and the causes can be:
- worn consumables;
- consumables assembled incorrectly or missing;
- faulty torch;
- air pressure too low or no air in torch;
Signalling disappears after a correct cutting cycle.
3 - Yellow led signalling air malfunction or no air.
When on, it indicates a malfunction on the compressed air circuit.
This condition is not necessarily due to internal sealing issues. It may
regard connection or source of origin.
4 - Yellow led signalling voltage present in torch.
When on, it indicates the cutting circuit is enabled (machine outlet
energised):
Pilot Arc or Cutting Arc "ON".
Output is powered when the torch button is pressed and there is no
alarm status.
The machine output is not powered in the following cases:
- when the torch button is NOT activated (standby status with low
energy consumption);
- during POST AIR cooling phase;
- if the pilot arc is not transferred to the piece within a maximum of
2 seconds;
- if the cutting arc shuts off due to excessive piece torch distance;
- excessive wear of the electrode or forced distancing of the torch
from the piece;
- if a SAFETY system or an ALARM activates.
5 - Green led signalling presence of mains voltage and auxiliary
circuits powered.
The control and service circuits are powered.
6 - MODE selecting knob
Allows selection of the following operating modes:
Metal continuous cutting mode.
Maintained arc cutting mode also when not transferred to
the piece (cutting on perforated metal sheets or grids).
Gouging mode, suitable for use with the torch with
GOUGING consumables (removal, modelling of metal by melting).
7 - Display leds for digital gauge air pressure
In real time, it indicates the measured pressure (optimal
pressure central green leds, poor or excess pressure yellow leds).
8 - AIR key
Pressing this key, the air continues to exit the torch for a pre-
established time of approx. 20 sec (allows cooling of the torch and/or
air adjustment within the optimal range).
REAR PANEL (Fig. D)
1 - Power cable.
2 - Main switch O - I
I (ON) Generator ready for operation.
3 - Manual pressure regulator (plasma compressed air) with gauge,
where applicable.
4 - Pressure reducer knob (where applicable).
5 - Fitting to couple to compressed air source (where applicable).

5. INSTALLATION

ATTENTION!
OPERATIONS WITH THE PLASMA CUTTING SYSTEM
STRICTLY OFF AND DISCONNECTED FROM THE POWER
MAINS.
THE ELECTRICAL CONNECTIONS MUST ONLY BE CARRIED OUT BY
EXPERT OR QUALIFIED TECHNICIANS.
PREPARATION
Unpack the machine, assemble the detached parts contained in the
packaging.
Assembling the return cable-earth clamp (Fig. E)
LIFTING MODE OF THE MACHINE
All the machines described in this manual must be suspended using the
handle or the strap supplied if applicable for the model.
Strap assembly mode (FIG. F).

MACHINE POSITIONING

Identify the installation location of the machine so there are no obstacles
on inlet and outlet opening of the cooling air; at the same time ensure no
conductive dust, corrosive vapours, humidity, etc. are sucked in.
Keep at least 250mm of free space around the machine.
ATTENTION! Position the machine on a flat surface of
adequate capacity for the weight to avoid dangerous
turning over or movements.
CUTTING CIRCUIT CONNECTIONS
Prepare a compressed air distribution line with a working pressure and
minimum capacity indicated in table 2 (TAB. 2).
Assembly, connection of the pressure reducer (Fig. G).
IMPORTANT!
Do not exceed the maximum input pressure of 8 bar. Air containing large
quantities of humidity or oil can cause excessive wear of consumable
parts or damage the torch. If in doubt concerning the quality of the
compressed air available, it is recommended to use an air dryer to
be installed downstream of the inlet filter. Use a hose to connect the
compressed air line to the machine, using
the fitting supplied for assembly on the air intake filter.
Connecting the cutting current return cable.
Table 1 (TAB. 1) gives the recommended values for the return cable (in
mm ) according to the maximum energy supplied by the machine.
2
Connect the cutting current return cable to the piece to be cut or
the metal support bench taking the following precautions:
- Check that a good electric contact is established especially when
cutting sheet metal with insulating, oxidised coatings etc.
- Connect the mass as close as possible to the cutting point.
- Do not use metal structures that are not part of the workpiece as a
- 7 -
CARRY OUT ALL THE INSTALLATION