(8) Assemble the front end torch parts
use the correct size and type of tungsten
electrode for the job, the tungsten elec-
trode requires a sharpened point for DC
AC HF TIG Welding Standard Operation:
(9) Select AC TIG Function.
Push the key until the
AC Tig icon illuminates
(10) Select 2 or 4 trigger function as required by the pushing
the key until the Torch Cycle icon illuminates. Turn the
Adjustment knob to select the option shown on the digital
display. Press the torch switch to exit Torch Cycle mode. The
display will default to the set welding current, adjust the set
current using the Adjustment knob.
AC (alternating current) enables us to TIG weld non ferrous alloys like Aluminium, Aluminium Alloys and
Magnesium. These materials have an insulating surface oxide layer that melts at a higher temperature than
is ideal because the nature of the AC wave form assists in breaking the surface oxide layer. HF arc igni-
tion provides easy and precise starting of the arc.
(8) Assemble the front end torch parts use the correct size and type of tungsten electrode for the job.
(9) Select AC tig function using the mode selection key
(10) Choose 2T or 4T trigger function preferred as per the descriptions below
2T Selection provides 2 times function of the torch switch.
(1) Pressing the torch switch gives arc ignition and initializes the welding current and the welding
current is maintained by the torch remaining on.
(2) Releasing the torch switch stops the welding by introducing down slope and the current falls to
4T Selection provides 4 times function of the torch switch
(1) Pressing the torch switch gives arc ignition and initializes the welding current
(2) Releasing the torch switch continues the welding operation.
(3) Pressing the torch switch and holding introduces down slope and current falls to minimum current.
(11) Choose the preferred welding current (amperage) to suit the tungsten size material type and
thickness to be welded.
(12) Set the AC Balance control to approximately 20%
(13) Set the AC Hz control to approximately 60Hz
(14) Lay the outside edge of the Gas Cup on the work piece with the Tungsten Electrode 1- 3mm from the
work piece this method will provide a clean positive arc ignition.
(15) Press the torch switch and the arc will ignite across the gap between the tungsten and work piece.
Hold even distance of about 2mm gap between the tungsten and work piece to maintain the arc.
(16) Release the torch switch to bring in the end of the welding sequence dependant of 2T or 4T trigger
AC Balance AC Hz % Pulse Pulse Hz
Turn the Adjustment Knob
to set the Peak Current
value. (Range is 20-320A)
(11) Current Set. Select by pushing selector key to cycle through
to illuminate the Peak Current icon. Set the Peak Current (amps)
to suit the tungsten size material type and thickness to be welded.
The value selected shows on the
digital display. It is the maximum set
value of amperage the machine will