Telwin MIG-MAG Manual De Instrucciones página 23

4.1.2 Wire feeder (FIG. C)
on the front side:
1- Wire speed adjustment potentiometer with graduated scale (1-19m/min).
2- MIG spot-welding time adjustment potentiometer
(0,5-7s) with built in ON/OFF switch(SPOT -MIG).
3- Torch function selection button (2T -4T).
4- Gas solenoid activated signal light.
5- Rapid connections for the MIG torch water pipes (just for the W.C. models).
6- Rapid connectors for the torch cable, EURO series.
on the back side:
7- Low voltage fuse.
8- Gas pipe connection.
9- Supply cable complete with rapid connector.
10-Welding current cable complete with rapid connector.
11-Water and cooling delivery and return pipes (just for W.C. models).
5. INSTALLATION
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WARNING! CARRY OUT ALL INSTALLATION OPERATIONS AND
ELECTRICAL CONNECTIONS WITH THE WELDING MACHINE COMPLETEL Y
SWITCHED OFF AND DISCONNECTED FROM THE POWER SUPPLY OUTLET .
THE ELECTRICAL CONNECTIONS MUST BE MADE ONLY AND EXCLUSIVEL Y BY
AUTHORISED OR QUALIFIED PERSONNEL.
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5.1 PREPARATION (FIG. D)
Unpack the welding machine, assemble the separate parts contained in the package.
5.2 HOW TO LIFT THE WELDING MACHINE
None of the welding machines described in this manual are equipped with a lifting
device.
5.3 POSITION OF THE WELDING MACHINE
Choose the place to install the welding machine so that the cooling air inlets and outlets
are not obstructed (forced circulation by fan, if present); at the same time make sure that
conductive dusts, corrosive vapours, humidity etc. will not be sucked into the machine.
Leave at least 250mm free space around the welding machine.
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WARNING! Position the welding machine on a flat surface with sufficient
carrying capacity for its weight, to prevent it from tipping or moving hazardously.
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5.4 CONNECTION TO THE MAIN POWER SUPPLY
5.4.1 Note
Before making any electrical connection, make sure the rating data of the welding
FIG. C
FIG. D
machine correspond to the mains voltage and frequency available at the place of
installation.
The welding machine should only be connected to a power supply system with the
neutral conductor connected to earth.
5.4.2 Plug and outlet
Connect a normalised plug (3P + T) having sufficient capacity to the power cable and
prepare a mains outlet fitted with fuses or an automatic circuit-breaker; the special earth
terminal should be connected to the earth conductor (yellow-green) of the power supply
line. The table (TAB.1) shows the recommended delayed fuse sizes in amps, chosen
according to the max. nominal current supplied by the welding machine, and the
nominal voltage of the main power supply.
5.4.3 Voltage change (FIG. E)
To carry out voltage change operations(only the three phase version), take off the panel
to gain access to the inside of the machine, and prepare the voltage change terminal
board so that the connection indicated on the special indicator plate corresponds to the
available power supply voltage.
Reassemble the panel carefully using the appropriate screws.
Warning! In the factory the machine is set at the highest voltage of the available
range, e.g.
U 400V ⇐ Voltage setting at the factory.
1
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WARNING! Failure to observe the above rules will make the (Class 1) safety
system installed by the manufacturer ineffective with consequent serious risks
to persons (e.g. electric shock) and objects (e.g. fire).
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5.5 CONNECTION OF THE WELDING CABLES (FIG. F)
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WARNING! BEFORE MAKING THE FOLLOWING CONNECTIONS MAKE
SURE THE WELDING MACHINE IS SWITCHED OFF AND DISCONNECTED FROM
THE POWER SUPPLY OUTLET.
Table (TAB. 1) gives the recommended values for the welding cables (in mm )
depending on the maximum current supplied by the welding machine.
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5.5.1 Connection to the gas bottle
Gas bottle can be loaded on welding machine bottle support platform: max 60 kg.
- Screw the pressure reducing valve onto the gas bottle valve, inserting the appropriate
adapter supplied as an accessory, for when the gas used is Argon or an
Argon /CO mixture.
- Connect the gas inlet pipe to the pressure-reducing valve and tighten the band
supplied.
- Loosen the adjustment ring nut on the pressure-reducing valve before opening the
bottle valve.
FIG. E
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