Paton ProMIG-200, User Manual

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PATON ProMIG DC MMA/TIG/MIG/MAG
4.1.1 WELDING PROCESS CYCLE – TIG-LIFT
See paragraph 6.1 for the procedure for switching the value of any function
4.1.2 TIG-LIFT ARC STRIKING FUNCTION
This torch button function is set by default in this model of equipment, and is
designed for torches with contact arc striking, without using oscillators and other similar
units, but unlike the classic method, it completely eliminates the shock current at the time
of striking. This function significantly reduces the destruction and ingress of a refractory
tungsten electrode into the welding seam, which is a very negative phenomenon.
Caution!!! The workpiece needs to be cleaned at the place of arc striking.
How to use this function is to touch the workpiece with the electrode, while you can
hold the electrode in this position indefinitely, and when the user considers that he is ready
to start welding (e.g., he lowered the protective mask over his eyes and blew the place well
with shielding gas) then it is enough to start SLOWLY lifting the sharpened electrode tip
away from the workpiece. The unit will detect this moment and perceive it as a signal to start
the welding process, thereby starting to increase the welding current LINEARLY to the set
value. The larger the main operating current, the faster you need to raise the electrode,
otherwise, it will melt. The time of smooth current build-up [t. uP] to the set value will be
reviewed in the following paragraph.
Operation procedure:
- put the automatic switch 12 on the rear panel of the source to the ON position;
- use button 4 to set the TIG welding mode (the modes are switched in a circle);
- set the function of the TIG-LIFT torch button. To do this, hold button 3 until the "Torch
button" [But] appears on the indicator; the current position of this function will also be
indicated next to it. Using buttons
2 , set "LIFT". If you do not take any action for a long
time, the unit will exit this function. You can return in the same way, and if you omitted the
required mode of the button, press button 3 again: the functions are switched in a circle;
- - use buttons 2 to set the current main parameter, this is the welding current;
- - if necessary, you can adjust additional functions of the welding process (see paragraph
6.1 for the order of switching).
t, sec