Jasic JT-300P, Руководство оператора

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OPERATION - TIG
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing. Also take the necessary steps to protect any persons within the welding
area.
TIG operation steps
HF and Lift TIG mode
The TIG 300P features HF arc ignition which is available in TIG 2T, 4T,
Cycle and Spot modes.
The 300P is also equipped with lift arc ignition, which is another form
or arc starting the welding arc by allowing the tungsten to touch
(short circuits) to the work piece with current being kept at a small
level and then lifting the tungsten off the work piece to create arc
ignition.
The biggest advantage of this arc starting method is to avoid HF interference and lower work
piece
’ s tungsten pollution, but when compared with HF arc ignition it offers a lower
successful rate. If unnecessary, please take HF arc ignition as your first choice.
Arc ignition type selection.

Press the HF switch until the HF ignition LED indicator is ON to enter TIG HF TIG arc ignition function.

Press the HF switch until the Lift arc ignition LED indicator is ON to enter lift TIG arc ignition function.
When in HF TIG mode (2T)
Keep the torch tungsten 2 - 4mm away from the work piece and then press and hold the torch trigger.
Gas will flow followed by the high frequency (HF) and the arc is ignited. Once the arc is ignited the HF will
cease and the current rises up to the preset values set by the user and welding is then carried out.
After releasing the torch trigger, the current begins to decrease automatically to the final (crater) current
value. The welding arc will then stop with gas still flowing until the gas post flow time ends and welding is
finished.
When in lift TIG mode (2T)
In this mode, place the torch tungsten in contact with the work piece and then press and hold the torch
trigger. Gas will flow and then you can lift the tungsten slowly away from the work piece to initiate the
welding arc and the current rises up to the preset values set by the user and welding is then carried out.
After releasing the torch trigger, the current begins to decrease automatically to the final (crater) current
value. The welding arc will then stop with gas still flowing until the gas post flow time ends and welding is
finished.
HF Ignition
Lift Arc ignition