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4. fix the front support with the suitable parker screws (in some cases
unscrew preset screws and fit the two casters on prepared seats placed
on the bottom);
5. fix the handle, screwing it on the fixed handle in connection with the
hole.
2. TECHNICAL INFORMATION
To switch on the welding machine operate the main
switch
FIG A)..
The intensity of the supplied welding current can be adjusted by means
of some settings on a rotary switch.
The machine is fitted with a thermal overload protection which will
automatically interrupt the welding current on reaching excessive
temperatures; in which instance, a yellow pilot light will switch on. Once
the temperature has decreased to a level low enough to allow welding,
the yellow light will switch itself off and the machine is ready again for
use.
3. WELDING MODE
3.1. CONTINUOUS WELDING
It is the mode in which the welding machine is likely to be used the most.
In this mode, you only have to press the button of the torch and the
welding machine begins to work. To stop welding it is necessary to
release the torch button.
3.2. GAS PRESSURE
Gas pressure should normally be set to give a reading between 6 / 12
litres per minute on the flowmeter. However, every operator will find what
suits him the most with his type of work and can make the necessary
adjustment.
3.3. GAS – NO GAS WELDING MODE
3.3.1. Gas - Connect
and earth clamp to negative (-). Figure B
3.3.2. No gas - (only for preset models) Connect earth clamp to
positive terminal (+) and the
Figure C
3.4. MIG - MAG WELDING MODE
A ) MIG = Metal Inert Gas
B ) MAG = Metal Active Gas
These two modes are perfectly equivalent, the difference is given by the
kind of gas you use. In case A the gas employed is ARGON ( inert gas).
In case B the gas employed is CO
alloys you need to use ARGON (100%), to weld steel a compound of
ARGON 80% and CO
20% is enough. You can only use CO
2
where you will weld iron.
4. SPOOL WIRE AND TORCH INSTALLATION
4.1. SPOOLS INSTALLATION
You can use spools of Kg. 0,2 , Kg. 1 and Kg. 5. The welding machines
are arranged with hub for spool of Kg. 1. To fir the Kg. 5 spool, it is
necessary to insert the supplied space and then to insert the Kg. 5 spool.
4.2. WIRE-FEEDER MOTOR
Make sure that the size of the groove in the feed roll corresponds to the
welding wire size being used. The machines are arranged with feed roll
for Ø 0,6 and 0,8 wire, in case of Ø 1 mm welding wire, ask for the
suitable feed roll. The feed roll has the wire diameter stamped on its side.
The machines are equipped with proper shagreneed rolls suitable for
welding with flux cored wire without gas protection. To weld with full wire
with GAS protection you have to replace the roll of the wire feeder group
which has V form for the steel wire and U form for the aluminium wire. If
you intend to use the welder with gas protection you have to require such
rolls and the pressure reducer to your retailer or to the builder society.
4.3. FEEDING WIRE INTO THE WELDING TORCH
Cut the first 10 cm of wire and then check that there are no burrs or
distortions at the cut end. Release the small wheel which is connected to
the pressure arm by unscrewing the pressure screw and pass the wire
through the feed roll's groove and then re-insert the wire into the guide.
At this point, make sure that the wire lies in the feed roll's groove in a
natural line. Drop the pressure arm on the wire and swing it back under
the pressure screw. Pressure on the welding wire is regulated by turning
the pressure screw, the correct pressure being critically important to the
smooth operation of the welding machine. The optimum pressure is the
one which ensures that the wire runs smoothly though allows the feed roll
to slip in the event of a blockage in the torch. It is possible to adjust the
friction of the paddle hub. If the hub over-runs, then increase the friction
pressure in order to always have the spool wire drawn. On the contrary, if
the friction pressure is too much, some tension can be released to obtain
a regular wire feeding.
4.4. TORCH CONNECTION
To connect the torch, you just have to insert it into the designed EURO
adaptor on the front of the machine and then shut the collar tightly, like in
pic.D. This way the electric as well as the gas connection is achieved.
to positive terminal (+)
to negative (-).
( active gas). To weld aluminium
2
2
5. WELDING GUIDE
5.1. GENERAL RULE
When welding on the lowest output settings, it is necessary to keep the
arc as short as possible. This should be achieved by holding welding
torch as close as possible and at an angle of approximately 60 degrees
to the workpiece. The arc length can be increased when welding on the
highest settings, an arc length up to 20 mm can be enough when welding
on maximum settings.
5.2. GENERAL WELDING TIPS
From time to time, some faults may be observed in the weld owing to
external influences rather than due to welding machine's faults. Here are
some that you may come across:
·
Porosity
Small holes in the weld, caused by break-down in gas coverage of the
weld or sometimes by foreign bodies inclusion. Remedy is, usually, to
grind out the weld. Remember, check before the gas flux (about 8
liters/minutes), clean well the working place and finally incline the torch
while welding.
·
Spatter
Small balls of molten metal which come out of the arc. A little quantity is
unavoidable, but it should be kept down to a minimum by selecting
correct settings and having a correct gas flow and by keeping the welding
torch clean.
·
Narrow heap welding
Can be caused by moving the torch too fast or by an incorrect gas flow.
·
Very thick or wide welding
Can be caused by moving the torch too slowly.
·
Wire burns back
It can be caused by wire feed slipping, loose or damaged welding tip,
poor wire, nozzle held too close to work or voltage too high.
·
Little penetration
It can be caused by moving torch too fast, too low voltage setting or
incorrect feed setting, reversed polarity, insufficient blunting and distance
between strips. Take care of operational parameters adjustment and
improve the preparation of the workpieces.
·
Workpiece's piercing
It may be caused by moving the welding torch too slow, too high welding
power or by an invalid wire feeding.
·
Heavy spatter and porosity
It can be caused by the nozzle too far from work, dirt on work or by low
in cases
gas flow. You have the two parameters, remember that gas must not be
lower than 7-8 liters/ min. and that the current of welding is appropriate to
the wire you are using. It is advisable to have a pressure reducer of input
and output. On the manometer you can read the range expressed in liter.
·
Welding arc instability
It may be caused by an insufficient welding voltage, irregular wire feed,
insufficient protective welding gas.
DESCRIPTION OF SIGNS AND SYMBOLS
U
... (V)
0
EN 60974 - 1
U
... (V/Hz)
1
I
... (A)
2
I
... (A)
1 max
I
... (A)
1 eff
X
IP21
H
1 ~
Single phase alternating voltage
3 ~
Three phase alternating voltage
Nominal open circuit voltage
Transformer-rectifier
Norm of reference
Flat characteristic
MIG-MAG wire feed welding
Nominal
values
of
frequency
Welding current
The welding unit's maximum absorbed current
Effective current supplied
Duty cycle
The welding unit's protection class
The transformer's insulation class.
Welding
machine
environments with heightened risk of electric
shock.
Symbols referring to safety regulations
mains
voltage
and
suitable
for
use
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