ESAB Aristo U6 - HF Functionality; LiftArc Functionality; Live TIG Start Functionality; Gas Purging Functionality

4 TIG WELDING
0459 287 601
- 19 -
© ESAB AB 2020
In the 4-stroke control mode, pressing the switch button starts gas pre-flow (if used) (1). At
the end of the gas pre-flow time, the current rises to the pilot level (a few amper), and the arc
is struck. Releasing the switch button (2) increases the current to the set value (with slope
up, if in use). At the end of welding, the welder presses the switch button again (3), which
reduces the current to pilot level again (with slope down, if in use). Releasing the switch
button again (4) extinguishes the arc and starts gas post-flow (if used).
- Activation of 4-stroke performed in the MAIN MENU.
HF
The HF function strikes the arc by a spark produced when the tungsten electrode is brought
to within a certain distance from the workpiece.
- Activation of HF performed in the PROCESS MENU.
LiftArc
The LiftArc function strikes the arc when the electrode is brought into contact with the
workpiece and then lifted away from it.
Striking the arc with the LiftArc™ function:
1. The electrode is touched on to the workpiece.
2. The trigger switch is pressed, and a low current starts to flow.
3. The welder lifts the electrode from the workpiece: the arc strikes, and the current rises
automatically to the set value.
Live TIG-start
With Live TIG-start the arc strikes when the tungsten electrode is brought into contact with
the workpiece and then lifted away from it.
- Activation of Live TIG-start performed in the PROCESS MENU.
Gas purging
Gas purging is used when measuring the gas flow or to flush any air or moisture from the gas
hoses before welding starts. Gas purging occurs for as long as the button is held depressed
and occurs without voltage or wire feed starting.