Starting The Weld; Lift-Arc Ignition; Hf Ignition - Weldclass WeldForce WF-201T AC/DC Operating Instructions Manual

12.2 Starting the Weld

12.2.1
Lift-Arc Ignition Function means that to start the arc the tungsten is touched on the job and lifted off.
The ignition current is very low and therefore the tungsten barely sticks to the job and the sharpened
point is not damaged. The tungsten is then easily lifted off the job. The machine senses that the contact
is broken and begins the weld.
1. Press the Torch Trigger Button down and hold
2. Pre-Gas will start
3. Touch the Tungsten Electrode onto the Workpiece very briefly
4. Lift the Tungsten Electrode up slowly off the Workpiece
5. If set to 4T Trigger mode the Start Current will be maintained until you release the Torch Trigger
Button and will then proceed to the Slope-Up process. If Set to 2T Trigger mode machine will
proceed directly to the Slope-Up process.
12.2.2
High-Frequency (HF) Ignition Function uses a high frequency arc to jump from the tungsten electrode
to the workpiece to start the welding arc (eliminating the need for the tungsten electrode to make
contact with the job).
1. Hold the Tungsten Electrode close to the workpiece (1-3mm). It is usually easiest to lie the torch
over and rest the edge of the shield cup on the workpiece.
2. Press the Torch Trigger Button down
3. The machine will begin the 'Pre-Gas' time and then ignite the arc.
4. If set to 4T Trigger mode the Start Current will be maintained until you release the Torch Trigger
Button and will then proceed to the Slope-Up process. If Set to 2T Trigger mode machine will
proceed directly to the Slope-Up process.
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Lift-Arc Ignition

HF Ignition

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