TECHNICAL DESCRIPTION
GB
(GB) 2
GB
1.0 TECHNICAL DESCRIPTION
1.1
DESCRIPTION
The wire feeder model 5 m and 10 m together with a generator form an
installation that can be used on the direct wire welding process.
Linked to generators it is able to satisfy many operative requirements.
The self-regulation of the wire speed covers three to four position varia-
tions of the work tension. This facilitates the welding parameters regula-
tion. Furthermore, it continuously adapts the advance wire speed to the
grid tension and the arcs length variations.
1.2
TECHNICAL CHARACTERISTICS
*
For using the entire range of wires possible, the wire rollers supplied
must be supplemented with those having suitable grooves (e.g. Knurled
grooves for cored wires)
** The shielding gas used depends on the metal being welded; see some
examples in the following table:
2.0 CONNECTION TO THE GENERATOR
1.
Make sure the generator is off before carrying out this operation.
2.
Connect the umbilical cord's power socket to the relative plug
placed at the back panel of the machine (insert it completely and
rotate clockwise so that it is completely blocked).
3.
Connect the multiple plugs to the relative socket blocking it with the
appropriate end.
4.
Connect the gas tube coming out from the cord to the cylinder pres-
sure reducer.
3.0 WIRE REEL INSTALLATION
3.1
WIRE REEL INSTALLATION
1.
Put the wire reel in the relative spool so that the two rotate together.
2.
Adjust the spool brake by means of the central nut on the latter, so
that the reel rotates easily (on some spools the adjustment nut is
not visible, but is accessible after withdrawing the retainer tab).
3.
Open the upper bridge of the wire feed unit
4.
Check that the rollers are suited to the diameter of the wire to be
used; otherwise change.
5.
Straighten an end section of the wire and cut it.
6.
Pass the wire over the two lower rollers and insert in the torch con-
nector tube until it protrudes from the latter by approx. 10 cm.
7.
Close the upper bridge of the wire feed unit and check that the wire
is positioned in the relative groove.
8.
Connect the torch and insert the protruding wire section into the
sleeve, taking care that the control pins are fitted correctly in the
seats and the connector nut is tightened fully down.
3.2
START-UP
1.
Switch on the machine
2.
Set the power switch to an intermediate position.
3.
Remove the nozzle and wire guide tube from the torch, press the
button and feed the wire until it protrudes from the front section of
the torch. While feeding wire through the torch, use the handwheel
to adjust the force that the wire pressure roller exerts on the feed
roller; the setting must ensure that the welding wire moves regularly
without slipping on the rollers and without deforming. Fit the torch
with a suitable wire guide tube according to the type of wire used.
4.
Secure the wire guide tube, and ensure that the diameter corre-
sponds to the wire used.
5.
Refit the gas nozzle.
6.
Open the gas cylinder valve.
7.
Connect the ground clamp to the workpiece on a section free of
rust, paint, grease or plastic.
IMPORTANT:
If the wire feeder is suspended during welding, make sure
the wire feeder frame is isolated from the earthing circuit (e.g. use lifting
ropes in nylon or other insulating material). This precaution is indispens-
able in order to prevent possible reclosure of the welding current through
the lifting means and the electrical system earthing circuit.
Failure to comply with this safety rule can result in serious damage
to the electrical system and compromise the trolley lifting system.
4.0 DESCRIPTION OF FRONT PANEL CONTROLS
4.1
FRONT PANEL
Figure 1.
U1
24 V 50/60 Hz
X
60%
100%
I1
3A
I2
345 A
270 A
Range of solid wires*
Ø 0,6 ÷ 1,2 mm
Range of cored wires*
Ø 0,8 ÷ 1,2 mm
Reel sizes
Ø 300 mm
Gas**
Inert or CO2 or MIX (max 4 bar)
Material to be welded
Usable shielding gas
Steel
CO2 or MIX (Ar + CO2)
Stainless steel
MIX (Ar + O2)
Aluminium
Ar
WELDING WIRE CAN CAUSE INJURY.
Never point the torch towards the body or towards other metals
when unwinding welding wire.
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