OPERATION
27
Adjustment
knob of max
welding
current
4.3.2 Torch switch control current
4.4 Argon Arc Welding Operation
4.4.1 TIG welding
（
4T operation
）
The start current and crater current can be pre-set. This function can compensate the possible crater that appears
at the beginning and end of the welding. Thus, 4T is suitable for the welding of medium thickness plates.
Introduction
：
Connected to the
14-lead aero socket
on the front panel
Pedal control
Torch switch
Adjust current button, when
it’s pushed up, the current
increases, when it’s pushed
down, the current decreases.
