Kemppi MasterTig 235ACDC GM Operating Manual

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Kemppi MasterTig 235ACDC GM Operating Manual Manual pdf 21 page image

MasterTig 235ACDC, 325DC, 335ACDCOperating manual - EN2.10 Installing gas bottleHandle gas bottles with care. There is a risk of injury if the gas bottle or the bottle valve is damaged!If a transport unit with a gas bottle rack is used, install the gas bottle on the transport unit first, then make the con-nections.Use inert gas, such as argon, helium or argon-helium mixture, as a shielding gas in TIG welding. Make sure that thegas flow regulator is suitable for the gas type used. The flow rate is set according to the welding current, joint formand the size of the electrode.A suitable flow rate for argon is normally 5 – 15 l/min. If the gas flow is not correctly set, this will increase the risk ofdefects in the weld (weld porosity). Spark ignition becomes more difficult if the gas flow is too high.Contact your local Kemppi dealer for choosing the gas and the equipment.a. Gas bottle valveb. Flow regulation screwc. Connecting nutd. Hose connectore. Gas bottle contents indicatorf. Gas flow meterAlways secure the gas bottle properly in an upright position to a special holder on the wall or on the welding equip-ment cart. Always keep the gas bottle valve closed when not welding. If the machine will be out of use for a long time,unscrew the pressure regulation screw.Do not use the whole contents of the bottle.Use a suitable shielding gas for the welding application.Always use an approved and tested regulator and flow meter.© Kemppi 21/77 1920900 / 1939