User Manual

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PATON ProMIG DC MMA/TIG/MIG/MAG
4.2 SHIELDING GAS PRE-PURGE FUNCTION
This function is necessary to protect the welding zone from the harmful effects of
atmospheric air, and consists in pre-purging the welding zone with shielding gas before
striking the welding arc. By default, the "pre-purge time" [t.Pr] is set to 0.1 sec; this value can
be changed at any time at your discretion. See paragraph 6.1 to change the value of any
function in the current welding mode.
4.3 SHIELDING GAS POST-PURGE FUNCTION
This function consists in the post-purging of the welding zone with a shielding gas
after the welding arc is extinguished, since the hot weld pool is afraid of the harmful effects
of atmospheric air for some time. By default, the post-purge time [t.Po] is set to 1.5 seconds;
this value can be changed at any time at your discretion. See paragraph 6.1 to change the
value of any function in the current welding mode.
4.4 PRE-CURRENT FUNCTION (PILOT ARC)
This function is required for the convenience of using the torch at the time of arc
striking. It allows you to start the welding process with low current values, the value of which
only maintains the process, but does not introduce significant heat input and does not burn
the workpiece through. It is possible to preheat the weld spot when using the TIG-4T button
mode. By default, the pre-current [Pr.A] is set at 20A. See paragraph 6.1 to change the value
of any function in the current welding mode.
4.5 CRATER FILLING CURRENT FUNCTION
This function is necessary to indicate the level to which the current drops at the end
of the welding process. It is necessary for crater filling if the TIG-4T button mode is used (with
the second press of the torch button). By default, the crater filling current is set at 20A. See
paragraph 6.1 to change the value of any function in the current welding mode.
4.6 WELDING CURRENT BUILD-UP FUNCTION
This function, in addition to saving the life of the electrode and, to some extent, the
torch itself, is also necessary for the convenience of using the torch. This eliminates the
formation of the initial splashing of the weld pool, as well as for the set time of current build-
up [t.uP], in the case of the TIG-2T button mode, you can accurately direct the torch to the
desired welding location, since the arc striking location in particularly critical workpieces is
not always located at the welding location. This function can also be used to preheat the
welding location. By default, it is set to OFF – disabled. See paragraph 6.1 to change the value
of any function in the current welding mode.
4.7 WELDING CURRENT RAMP-DOWN FUNCTION
This function is necessary to improve the process of filling the crater formed under
the pressure of the main working current of the welding arc, and such a crater is the nucleus