8
green wire of the mains cable is connected to the earth plug
pin.
•
The capacity of magnetothermic switch or fuses in series
with mains supply should be equal to current I
1
absorbed
by the unit.
•
Input current I
1
is determined by reading the techinical
specifications on unit i.e. power supply voltage U
1
available.
•
Any extensions should have adequate sections for input
current I
1
.
•
Turn machine on with switch (
8
) fig.2.
WARNING: ELECTRIC SHOCK CAN KILL.
•
Do not touch live electric parts.
•
Do not touch weld output terminals when unit is
energized.
•
Do not touch torch or electrode holder and earth clamp at
the same time.
•
Regulate current based on the diameter of the electrode,
welding position and type of joint to be carried out. When
finished welding, always remember to turn unit off, and to
remove electrode from electrode holder.
3.5 TIG WELDING
•
This welding machine is fit for welding with TIG
procedure: stainless steel, iron, and copper.
•
Connect earth cable wire to positive (+) pole of welding
machine and terminal to working piece as close as possible
to welding machine, making sure there is a good electrical
contact.
•
Use T150 torch (item 1567.01) and connect power wire
(
2
) fig.3 to negative pole (-) of welding machine.
•
The welding machine circuit should not be deliberately in
direct or indirect contact with protection conductor if not in
the workpiece.
•
If earthing is deliberately made on the workpiece by means
of protection wire, the connection must be as direct as
possible, with the wire having a section at least equal to the
welding return current wire and connected to the piece
being worked on, in the same place as the return wire, using
the return wire terminal or a second earth terminal closeby.
•
All possible precautions must be taken in order to avoid
stray currents.
•
Connect gas pipe (
4
) to pressure reducer output connec-
ted to an ARGON cylinder.
•
Press torch push-button and regulate gas capacity.
•
There is a valve inside the torch handle which blocks the
gas, upon releasing the push-button.
•
Use a 2% thoriated tungsten electrode chosen according
to table 2 and prepared according to that indicated in point
3.5.1.
3.3 GENERAL NOTES
Before using this welding machine, carefully read the
CENELEC standards HD 407 and HD 433 also check
insulation of cables, electrode holder clamp, sockets and
plugs and that the section and length of welding cables are
compatible with current used.
Up to 5 mt. use 16 mm
2
From 5 to 20 mt, use 25 mm
2
From 20 to 30 mt. use 35 mm
2
3.4 COATED ELECTRODE WELDING
•
This welding machine is fit to weld all types of electrodes
except the cellulose type (AWS 6010)
•
Use electrode holder clamps in compliance with the safety
standards and without projecting tightening screws.
•
Make sure that switch (
F
) fig. 2 is in 0 position or not
inserted in supply socket then connect welding cables in
accordance with polarity demanded by the electrode
manufacturer which you will be using.
Connect the earth cable clamp to the workpiece.
VERY IMPORTANT: To secure a proper working of this
machine and to avoid current drops make sure that the
clamp seals with the workpiece.
•
Welding circuit should not be deliberately placed in direct
or indirect contact with protection wire if not in the workpiece.
•
If earthing is deliberately made on the workpiece by means
of protection wire, the connection must be as direct as
possible, with the wire having a section at least equal to the
welding return current wire and connected to the piece being
worked on, in the same place as the return wire, using the
return wire terminal or a second earth terminal
closeby.
•
All possible precautions must be taken in order to avoid
stray currents.
•
Check to see that power supply voltage corresponds to
voltage indicated on the welding machine technical
specification tag.
•
Connect supply cable (
G
) fig.2: When mounting a plug,
make sure that its capacity is adeguate and that the yellow-
Fig. 2
Fig. 3
