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7. When you press the control button on the torch this will activate the solenoid valve and the high
frequency in the machine, a sound will be heard with the argon gas flowing through the torch. If
switched to pedal operation the pedal activates the flow and high frequency start.
8. The tungsten electrode of the welding torch is 2-4 mm from the work piece.
9. Using the Post flow control will protect the weld while it cools down by continuing the gas flow after
the arc stops.
10. When 2T/4T switch is in the 2T position only the main amps will operate along with the post flow. In
4T position arc start amps and end amps will work. Do not use 4T function with the foot pedal.
11. When in 4T mode you press and release the switch an arc will start and continue to run until you press
and release the switch again.
AC TIG welding
1. If AC/DC switch is in AC mode, this process will weld aluminum and magnesium. All other
metals require DC mode.
2. The AC balance (cleaning action) is used for oxidized aluminum. Care must be taken in
choosing the correct tungsten size, as too much cleaning action can overheat the tungsten and
melt it.
3. The AC frequency mode can alter the width of the arc and can create a narrow or wider bead
depending on the setting (125Hz is a common setting). Having a higher frequency can be of
help when working with thinner aluminum as it creates a smaller weld bead and using less
gives a softer wider bead.
DC STICK welding (SMAW)
1. For stick operation (MMA), select stick function on the TIG/MMA switch. Connect the stick
electrode holder to the negative port (-) and the ground dinse is connected to the positive port (+),
these can be reversed with the electrode holder in the positive port (+). The diagram shows
electrode negative, this gives a softer flowing bead for most rods.
Warning：
Inserting or pulling out any cable wire or plug while power is on will be hazardous
and will damage the welder.
