Kemppi fastmig MF 29 Operation Instructions Manual

Also see for FastMig MF 29: Service manual Operating manual

Contents

Kemppi fastmig MF 29 Operation Instructions Manual Manual pdf 10 page image

2.8. GROUND CABLEConnecting of earth cable should be preferably connected directly to the welding material. Contactsurface of press always should be as large as possible.Clean the fastening surface from paint and rust!Use in your MIG equipment at least 70 mm². Thinner cross-sectional areas might cause overheatingof connectors and insulations.Make sure that the welding gun in your use is designed for max. welding current needed by you!Never use a damaged welding gun!2.9. SHIELD GASHandle gas bottle with care. There is a risk for injury if gas bottle or bottle valve isdamaged!For welding stainless steels, mixed gases are normally used. Check that the gas bottle valve issuitable for the gas. The flow rate is set according to the welding power used in the job. A suitableflow rate is normally 8 – 10 l/min. If the gas flow is not suitable, the welded joint will be sporous.Contact your local Kemppi-dealer for choosing gas and equipment.2.9.1. Installing gas bottleAlways fasten gas bottle properly in vertical position in a special holder on the wall oron a carriage. Remember to close gas bottle valve after having finished welding.Parts of gas flow regulatorA Gas bottle valveB Press regulation screwC Connecting nutD Hose spindleE Jacket nutF Gas bottle pressure meterG Gas hose pressure meterThe following installing instructions are valid for most of the gas flow regulator types:1. Step aside and open the bottle valve (A) for a while to blow out possible impurities fromthe bottle valve.2. Turn the press regulation screw (B) of the regulator until no spring pressure can be felt.3. Close needle valve, if there is one in the regulator.4. Install the regulator on bottle valve and tighten connecting nut (C) with a wrench.5. Install hose spindle (D) and jacket nut (E) into gas hose and tighten with hose clamp.6. Connect the hose with the regulator and the other end with the wire feed unit. Tighten thejacket nut.7. Open bottle valve slowly. Gas bottle pressure meter (F) shows the bottle pressure.Note! Do not use the whole contents of the bottle. The bottle should be filled when the bottlepressure is 2 bar.8. Open needle valve if there is one in the regulator.9. Turn regulation screw (B) until hose pressure meter (G) shows the required flow (or pressure).When regulating flow amount, the power source should be in switched on and the gun switchpressed simultaneously.Close bottle valve after having finished welding. If the machine will be out of use for a long time,unscrew the pressure regulation screw.10 – FASTMIG™ MF 29 / 0603 © KEMPPI OYEBDGA FC