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A neutral wire is not required. For TIG welding pure Argon (99.996%) should be used as shielding gas. Connect machine to gas cylinder only by means of a suitable and approved pressure reducing and regulating device.The maximum input pressure must not exceed 10 bar/142 psi. The earth cable for the work piece clamp should have a minimum cross section of 25mm2. After setting the ON/OFF switch [1] the machine is operational. 4 Operation Front view TIG 200 DCi 15 13 14 «f iilliBJ IlSiilil