Kemppi MASTERTIG AC/DC 2000 Operation Instructions Manual

Also see for MASTERTIG AC/DC 2000: Service manual

16 – Mastertig AC/DC 2000, 2500, 2500W, 3500W/0510 © COPYRIGHT KEMPPI OY4T2T4T 2T/2212 2 41 32222 41 33.4.4. Use and selection of operation of the torch switchThe operation of the torch switch is selected by pressing the 2T/4T key.2-function (2T) / spark ignition1. Press the torch switch. The gas starts to flow and after the pre-gas time selected, the arc is ignited and the current rises to thewelding level within the selected up-slope time.2. Release the torch switch, and the welding current will drop inaccordance with the selected down-slope time. After the arc isturned off, the gas will continue to flow for the post-gas time.2-function (2T) / contact ignition1. Press the tip of the torch lightly against the work piece.2. Press down the torch switch.3. Lift the electrode slowly away from the work piece. The arcwill ignite and the welding current will rise to the weldinglevel within the selected up-slope time.4. Release the torch switch, and the welding current will drop inaccordance with the selected down-slope time. After the arc isturned off, the shielding gas will continue to flow for the post-gas time.The down-slope time of the welding current can be interrupted by quicklypressing the torch switch.You can go back to the welding current from the down-slope current bypressing the torch switch down. After that, the current will rise at a ratecorresponding to the down-slope time.4-function (4T) / spark ignition1. Press the torch switch down. The shielding gas starts toflow.2. Release the torch switch. The ignition spark ignites thearc and the current will rise to the welding level withinthe up-slope time.3. Press the torch switch down. The welding continues.4. Release the torch switch, and the current starts to dropand after the selected down-slope time the arc is broken.After this, the shielding gas will flow for the timeselected.