9
A. Plasma Welding
1.
Open cylinder valves and handwheels for gas flow rate at regulators.
2.
Switch main switch
F
on. Fan and water pump will start, lamp
d
will light.
3.
Keep torch away from work
4.
Set switch
i
to symbol
5.
set switch
k
to symbol
6.
Push test button for plasma gas and adjust flow rate acc. to data sheet plasma welding
7.
set switch
f
to symbol
(Pilot arc will ignite after a gas pre-flow time of
about 5 sec. and lamp
e
will light up.
8.
Keep button
E
depressed and adjust welding current. Amperage is preset at potentiometer
a
and can be read from ammeter
D
.
9.
Actuate torch switch or foot switch and adjust flow rate of shielding gas at the other
regulator.
Adjustment of tungsten with torch PT-8
Set switch
f
to mid position and operate torch switch or foot switch. HF will start. Check whether HF
sparks over to nozzle on all sides. If not, readjust tungsten electrode of torch
This adjustment is very important and should be repeated regularly
The electrodes of all other torches are centred by the insulation tube inside the torches automatically.
B.
TIG - Welding
1.
Substitute the plasma-torch by an appropriate TIG-torch.
2.
Open cylinder valve and adjust gas flow rate to the value desired.
3.
Switch main switch
F
on. (Fan and water pump will start. Lamp
d
will light.
4.
Set switch
i
to
(4-stroke) or
(2-stroke)
5.
Set switch
k
to
6.
Set switch
f
to
7.
Turn potentiometer
c
counterclockwise to 0
8.
Keep button
E
depressed and adjust welding current. Amperage is preset at potentiometer
a
and can be read from ammeter
D
.
C. TIG - Pilot - Welding
