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PATON
®
ADI 200 STANDARD TIG/MMA MIG/MAG
ATTENTION!
Use a gated welding torch with a 13 mm bayonet
connector. Select the maximum current of the welding torch according to
the specifications.
4.3.2 OPERATIONAL CYCLE OF THE ARGON ARC WELDING PROCESS
WITH TIG-4T FUNCTION
The procedure for changing the values of the operational parameters of the welding unit is described
in Section 6.1.
4.3.3 TIG-4T CONTACTLESS ARC STARTING FUNCTION
This function of the control button on the welding torch. Welding unit contains a module for
contactless arc starting (oscillator) and an integrated gas supply valve. When the control button of
the welding torch is pressed, this function is performed in such a manner as the TIG-2T contactless
arc starting function (see Section 4.2.3), but with two differences.
According to the first difference
, at the start of welding, when the control button is held
down after the first pressing, the weld area has been purged with gas before welding, and the high-
voltage arc starting has been provided, the initial current (for forming a pilot arc) is constant, and
only when the button is released, the welding current will increase to the set operational current
value. Therefore, the button is not to be pressed during welding with the set operational current.
According to the second difference
, at the end of the welding, when the control button is
held down after the second pressing, the welding current will decrease linearly to the crater welding
current value and then is constant until the button is released. When the button is released, the
welding current will decrease linearly, the welding unit will be switched off, and the weld area will
be purged with gas. After these operations, the gas supply valve will be closed with delay.
