Specifications

19
To prepare the unit for TIG welding, it is important that you adopt the following
procedure.
1. Plug the work return lead in to the +ve terminal, and secure the work
clamp to the workpiece.
For good contact, the work clamp must be attached to clean bare metal.
Clean with a wire brush where necessary.
2. Plug the torch lead to the -ve terminal.
3.
Fig 2
Screw the pressure regulator on to
the gas bottle tightly, and attach
the
gas hose to the inlet connector
securely, with a hose clip. Screw in
the pressure regulator knob to set a
pressure of approx. 2.5Kg./cm
2
. (35
lbf/in
2
).
4. Ensure the electrode at the torch
nozzle, p
rotrudes by 4 - 5mm., also
ensure that the electrode is sharply
pointed withan angle of 40°-60° , if
it is not, grind it longitudinally.
(Consult your TIG Torch manual for
the procedure for adjusting the
electrode).
5. Set the welding current in accordance w
ith the thickness of the material to
be welded and the size of tungsten electrode to be used, (See page 20),
and switch ON using the switch mounted on the rear panel. The green light
on the front panel will glow.
6. Open the gas valve on the torch handle, allowing gas to flow from the
torch nozzle. Cover your face with the head shield, bring the torch to within
3-4mm of the work, and at an angle of 45°, so that the ceramic nozzle
gently touches the work surface. See fig. 3.
Fig 3