6
1 - Connecting the cables (Fig. C1-C2)
1) Connect the gas hose to the pressure reducer fitted on
the cylinder beforehand. Gas cylinders are supplied with
a pressure reducer to adjust pressure of the gas used for
welding.
2) Screw the torch to the centralised connection on the front
panel of the welding welding power source (Pos. 4, Fig. A).
3) Connect up the earthing system cable to the rapid cou-
pling marked by a - (negative) symbol and then the rel-
evant ground clamps to the piece being welded or to its
support in an area free from rust, paint and grease. Using
particularly long earthing cables reduces the voltage and
causes some problems from increased resistance and in-
ductance of the cables that could cause faulty welding. Fol-
low instructions to avoid these problems:
•
Use earthing and extension cables with appropriate sec-
tion.
•
Lay out the cables as a flat as possible to prevent them
from coiling up.
4) Open the moving cover, remove the protection box for
changing polarity (see Fig. C2) and make sure that the
change polarity cable is connected to the positive pole (+).
2 - Welding
1) Open the moving cover and fit the coil of wire.
2) Load the wire (see the “Loading the wire” paragraph).
3) Switch the welding welding power source on by moving the
power supply switch to
I
(Pos. 5, Fig. A).
4) Carry out the following operations on the MIG-MAG torch:
•
Remove the gas-guide and wire-guide nozzles, allowing
the wire to flow freely during loading. Remember that the
contact tip must correspond to the wire diameter.
•
Push the torch push button or the motor check push but-
ton until the wire end comes out from the torch.
•
Tighten the contact tip on the torch.
•
Attach the correct gas-guide nozzle.
•
Protect the gas-guide nozzle and the wire-guide nozzle
of the torch from sprays of solder.
5) Make the adjustments and select the parameters on the
control panel.
6) Open the tap on the cylinder slowly and adjust the reduc-
er knob to obtain a pressure of about 1,0 to 1,5 bar, and
regulate the flow to about 15 lit/min (to suit the current to
used for welding).
7) The welding welding power source is ready for welding. To
begin welding, approach the point to be welded and press
the button on the torch.
8) When you have finished welding, remove the waste, turn
off the welding power source and close the gas cylinder.
MIG-MAG / Puls MIG / DOUBLE
Puls MIG welding without GAS
To begin MIG-MAG / Puls MIG / DOUBLE Puls MIG welding
without gas, carry out the following tasks (with the welding pow-
er source switched off):
FIG. C2
FIG. C1
2000HB98
