18 | P a g e
PATON
®
PSI PRO 315 A 400 V DC MIG/MAG TIG/MMA
1.
Switch on the oscillator for contactless arc starting.
2.
Set switch
(17)
on the rear panel of the welding unit to position I (switching on).
3.
Press button
(4)
to select the argon arc welding process
(TIG)
. The display of the welding unit
will blink, warning the operator that the unit is ready to switch to the next welding process. If
the argon arc welding process has been missed during the selection, press button
(4)
again the
methods are switched over and over again;
4.
Holding the button
(3)
for about 5 seconds, you gain access to the locked functions of the
welder;
5.
Select the functions of the
TIG-2T
torch button. To do this, press the button
(3)
until the
[BUTTON OF TORCH]
function appears on the display, after releasing the button for 1 second,
the device will display the current position of the function, use the
(1)
buttons to set
[2T].
If
you do not do anything for a long time, the device will exit this function, you can go back the
same way, if the desired mode has been skipped, press the button
(3)
again, the functions will
switch over and over again;
6.
Set the specified welding current by buttons
(1)
.
If required, perform the additional functions specified for the argon arc welding process (see Section 6.1).
ATTENTION!
Use a gated welding torch with a
Ф
13mm
bayonet connector.
Select the maximum current of the welding torch according to the
specifications.
4.3.2 TIG-2T CONTACTLESS ARC STARTING FUNCTION
This function of the control button on the welding torch is used if the welding unit is connected to an
external module for contactless arc starting (an oscillator) with an integrated gas supply valve.
The control button on the welding torch is connected directly to the oscillator. When the control button
is pressed, the control signal is generated and transmitted to the oscillator. On this control signal
(moment of time t1), the gas supply valve will be opened for purging the weld area with gas before
welding, the welding unit will be switched on, with delay, and a high-voltage pulse for the contactless
arc starting will be generated. After these operations, all other functions, specified with consideration
for the operational cycle of this welding process, will be performed (see the sections presented below).
When the button is released, the welding current will decrease linearly, the welding unit will be
switched off (instant of time t2), and the weld area will be purged with gas. After these operations, the
gas supply valve will be closed.
ATTENTION!
The oscillator must contain a device for protecting the output
of the welding unit against electric breakdown caused by a high-voltage
discharge generated at the instant of time of arc starting. Before the operation,
activate the protective device.