Kemppi MASTERTIG AC/DC 2000 Operation Instructions Manual

Also see for MASTERTIG AC/DC 2000: Service manual

Mastertig AC/DC 2000, 2500, 2500W, 3500W/0510 – 9© COPYRIGHT KEMPPI OYReference max electrode diameters and yieldelectrode type yield 2000 2500, 2500W 3500WFe-rutile 95 % ø 4 ø 5 ø 6Fe-base 100 % ø 4 ø 5 ø 6Fe-high-yield 180 % ø 2,5 ø 4 ø 5250-270 % - - - ø 4 ø 5Ss-rutile - - - ø 4 ø 6 ø 6Ss-base - - - ø 4 ø 6 ø 6Ss-high-yield 150 % ø 3,25 ø 5 ø 6Hard facing by welding 100 % ø 3,25 ø 5 ø 62.5. CABLE FOR MMA WELDING AND RETURNCURRENT CABLEThe welding cables have to be at least 16 mm2 copper cables for Mastertig AC/DC 2000 and 25mm2 copper cables for Mastertig AC/DC 2500, Mastertig AC/DC 2500W and 50 mm2 coppercables for Mastertig AC/DC 3500W. Thinner cables will cause voltage losses and heating.Connect the grounding clamp of the return cable carefully, preferably directly to the piece to bewelded. Use as short welding cables as possible. Unnecessarily long cables will lower the maxi-mum output voltage of the machine. Coiling of the excess cable lowers the output voltage of themachine especially in AC welding and decreases the ignition spark.Clean the fastening surface of any paint and rust!2.6. THE WELDING TORCHIn Mastertig AC/DC 2000 and Masterig AC/DC 2500, only an gas-cooled torch can be used.In Mastertig AC/DC 2500 W and -3500W, you can use either an gas-cooled or a water-cooledtorch. Make sure that the torch you are using is designed for the maximum welding current thatyou need.Never use a damaged torch!2.7. ELECTRODES TO BE WELDEDWith the Mastertig AC/DC power sources you can use all electrodes designed for DC or ACwelding within the current limits of the machine in question.Mastertig AC/DC 2500, -2500W and -3500W power sources are suitable for carbon arc gougingand cutting according to their maximum power.2.8. TIG DC WELDINGDC– current is used typically when welding different kind of steel. We rekommend for DC–welding a WC20 (grey) elctrode.2.8.1. Sharpening of the electrodeThe tip of the electrode is sharpened into a cone, so that the arc becomes steady and the thermalenergy is concentrated on the spot being welded. The length of the sharpening to the diameterof the electrode:with small current sharp l = 3 x dwith large current blunt l = 1 x d