Protection type:
IP21S
Insulation class:
H
Weight:
14 kg
Transportation and Storage
•
It should be cleaned properly for longer
storage.
Assembly and Initial Operation
Before plugging in the welding machine,
check that the voltage is complying and the
voltage complies with the unit full load. It is
also necessary to make sure that the supply
earth system is sufficient.
Grounding
The unit is connected to the terminal with a
grounding cable. Make sure that the contact
between the tongs and the piece to be welded is
perfect. The parts touching each other have to be
degreased and any rust must be removed. Also,
it should be protected against it. Any non-
functioning piece will decrease the welding
capacity and may result in non-satisfactory
quality of welding.
The better is the contact, the better is the result
of welding
(e.g. polish with hand angle cutter)
Operation (Fig. 2)
Control Post
ON/OFF
The welding machine is equipped with a
power switch (ON-OFF position).
(Fig. 2/a)
Welding current set-up
The welding machine SG 120 A
for solid wire
welding has a three way switch to provide for
2 set-up of the welding current according to
the required load
(Fig. 2/b)
Setting the speed of wire feed
The wire feed speed will be set up by a
potentiometer. The rate of the wire feed should
be set up by the potentiometer to be found in the
front side of the tool. The potentiometer is used
together with a reversing switch in control of the
current load, which results in a DC arc
(Fig. 2/c)
Overheating Protection
The unit is equipped with thermal protection to
interrupt the welding current supp immediately
when a higher temperature is reached. . Then a
red warning light will turn on
(Fig. 2/d).
As soon
as the temperature decrease at a level enabling
the operation, the warning light will go off again
The current supply will be restored and the unit is
able to operate again.
The wire reel assembly and the hoses
set
Reels weighing up to 0,2-0,4 Kg –may be used
on the unit.
Wire feed motor
Make sure that diameter of the wire feed groove
is the same as that of the wire. The welding
machines are determined for a reel carrying wires
of diameter 0,6 and 0,8. If it is necessary to work
with a wire of diameter 0,9, it is possible to use
the supplied reel .The required diameter is
printed on the printed on the side.
Welding machine SG 120 A is equipped with
grooved reels to weld with solid wire without
gaseous shield
Wire Introduction
The first 10 cm of wire should be cut in a way that
the resulting cut is straight, is not overlapping,
sagging and dirty. Lift up the reel joined using a
movable arm by releasing a respective screw.
Insert the wire in the plastic lead by pulling it
through a respective groove and thus inserting in
the lead again . Mind that the wire should not be
stretched, it should be inserted loosely. Make
sure for the wire not to be tightened and be laid
loosely. Lower the moving arm again and set up
the pressure by a respective screw. The
pressure, id correctly set-up will thus The
pressure properly set-up will influence the regular
feed of the wire. Even if the wire gets stuck the
driving wheel is driven by the correct pressure
and the wire is fed without any problems further
on. The wire resistance should be set up on the
wire axis. The resistance should be set up in a
way to provide for easy drawing out and to
prevent winding back by itself. If the action of the
clutch is too dragging and the driving wheel is
skidding, the clutch should be tightened so that
the wire guiding becomes regular.
Hoses Connection
Solid wire welding machine SG 120 A.
It has
got a set of hoses directly connected being thus
ready for use. The exchange, if necessary has to
be done extremely carefully by an expert. To
exchange the gas nozzle it is sufficient to
unscrew and pull it out. The gas nozzle must be
pulled out together with every current nozzle
exchange. It is necessary to see that the
diameter of the nozzle coincides with the
diameter of the wire. The gas nozzle should be
kept clean any time
Operator Safety Instructions
•
Before the machine is switched on, all the
safety and protection elements must be
installed properly at places.
•
Do not use the unit before you have read the
operating manual carefully.
14
SV120
–
F
SV120
–
F
SV120
–
F
Reels weighing up to 0,2-0,4 (1,0) Kg may be used
on the unit.
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