Kemppi Protig 410 Operation Instructions Manual

PROTIG 410 / 0537 – 9© KEMPPI OY2.3. SHIELD GASHandle gas bottle with care. There is a risk for injury if gas bottle or bottle valveis damaged!For welding stainless steels, mixed gases are normally used. Check that the gas bottle valveis suitable for the gas. The flow rate is set according to the welding power used in the job. Asuitable flow rate is normally 8 - 10 l/min. If the gas flow is not suitable, the welded joint will besporous. Contact your local Kemppi-dealer for choosing gas and equipment.2.1.9. Remote control unitsConnect remote control unit as shown in figures on page 4 or 5. Operation of remote control unitis explained on page 19.2.2. INSTALLATION OF TIG/MMA EQUIPMENTFasten earthing press of ground cable carefully, preferably direct to welding piece. Contactsurface of press always should be as large as possible.Clean the fastening surface from paint and rust!Use in your TIG/MMA equipment 50 mm2 cables. Thinner cross-sectional areas might causeoverheating of connectors and insulations.Make sure that the torch being in your use is designed for max. welding current needed by you!Never use a damaged torch!2.2.1. Choice of electrode and flow amount of shielding gasUse argon as TIG shielding gas. Electrode size and shielding gas flow rate are defined by wel-ding current size. The table below is given only as a guide.Welding current Electrode Gas nozzle Gas flow rateA ø mm number ø mm l/min5...80 1,0 4 / 5 6,5 / 8,0 5...670...150 1,6 4 / 5 / 6 6,5 / 8,0 /9,5 6..7140...250 2,4 6 / 7 9,5 / 11,0 7...8225...330 3,2 7 / 8 11,0 / 12,5 8...10330... 4,0 10 16,0 10...122.3.1. Installing gas bottleAlways fasten gas bottle properly in vertical position in a special holder on thewall or on a carriage. Remember to close gas bottle valve after having finishedwelding.