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23
HF (high frequency) ignition allows the arc to be started in TIG welding without touching the tungsten to the

resulting in the arc igniting across the gap between the tungsten electrode and the work piece.
The distance between the electrode and the work piece can be up to 5mm. This arc ignition method
prevents tungsten inclusion in the work piece, promotes longer tungsten life and offers better operator
control over the starting and stopping the arc.
(1) Assemble the front end torch parts use the correct size and type of tungsten electrode for the job,
the tungsten electrode requires a sharpened point for DC welding.
(2) Select DC TIG and 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.
 
(3) Choose the preferred welding current (amperage) to suit the tungsten size material type and
thickness to be welded.
(4) 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.
(5) 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.
(6) Release the torch switch to bring in the end of the welding sequence dependant of 2T or 4T trigger
function choice.
(1) Assemble the front end torch parts
use the correct size and type of tungsten
electrode for the job, the tungsten
electrode requires a sharpened point for
DC welding
(4) Lay the outside edge of the Gas Cup
on the work piece with the Tungsten
Electrode 1- 3mm from the work piece
(5) 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 &
work piece to maintain the arc.
(6) Release the torch switch to bring in the end
of the welding sequence dependant of 2T
or 4T trigger function choice
DC HF TIG Welding Standard Operation:
(2) Select DC TIG Function.
Push the key until the
DC Tig icon illuminates
ALARM
Job Recall
Torch Cycle
Volts
ADJUSTMENT
AC
AC
DC
AC PULSE
DC PULSE
DC
(3) 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.
Razorweld
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