Tig Arc Starting - Everlast PowerMTS 251Si Operator's Manual

Section 3
Note: A TIG lift start
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1. Position the edge of the ceramic cup on the metal. Press and hold the torch switch or press the foot pedal. Wait for the Pre-flow to
start. (Make sure pre-flow is set for less than .4 seconds or start will be noticeably delayed.)
2. Quickly rotate cup so that the tungsten comes in brief contact (< .5 seconds) with the metal.
3. After contact with the metal, quickly rock the torch back so that the tungsten breaks contact with the metal.
4. An arc should form. As the arc grows, raise the cup up off the metal and slowly rotate the torch into welding position.
5. Leave 1/8" or less gap between the tip of the Tungsten and the metal. Proceed with welding, leaving the torch inclined at a 15° angle.
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1. Position the point of the sharpened tungsten about 1/8" or less above the metal.
2. Press the torch trigger or press the foot pedal to initiate the arc. The HF arc will be initiated. It may appear briefly as a blue spark.
3. An arc should form, almost immediately after the pre-flow cycle is completed. HF arc initiation will be delayed by the amount of pre-
flow time used. If arc does not start after the pre-flow interval, and the HF is creating a spark, then check the work clamp contact with
the work piece. Move the tungsten closer to the work. Repeat steps 1 and 2.
4. Leave 1/8" or less gap between the tungsten tip and the metal and proceed with welding, leaving the torch inclined at a 15° angle.
1. Turn unit on, allow time for power up cycle to complete its start up process before selecting TIG or Pulse TIG mode.
2. Select either HF or Lift Start TIG with the "HF/Lift Start" selector switch.
3. Plug in the Torch and select "4T " or "2T" mode with the selector switch OR plug in foot pedal and select "Pedal".
4. If using the torch switch, select "Upslope" or "Downslope" time by rotating the knob to increase/decrease the ramp up or ramp down
time of the amperage.
5. Adjust amps to the desired maximum settings.
6. Start arc as depicted above.
7. If using 2T, continue to hold the torch switch until you are ready to stop welding. Release the switch. The Arc will then cease.
8. If using the foot pedal raise your foot fully off the pedal and arc will stop automatically.
9. If using 4T, release the switch, after arc initiates. Continue to weld without holding the switch down. To stop, press and release the
switch again.
should use a nearly seamless motion. Use a light touch and a quick motion for best results.
LIFT START OPERATION
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HIGH FREQUENCY START OPERATION
General TIG Arc Starting Steps
Basic Theory and Function
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