Kemppi FitWeld 300 Operating Manual

Also see for FitWeld 300: Service manual

Contents

Kemppi FitWeld 300 Operating Manual Manual pdf 7 page image

EN2.4.1 Connecting to mainsFitWeld 300 is connected to a 3-phase network using the mains cable supplied with themachine. The cable is not equipped with a wall plug, so you must install a suitable plug beforeyou use the machine for the first time.Check also that the mains cable complies with the local electrical regulations, and replace thecable if necessary. See ’Technical specifications’.NOTE! The mains cable or wall plug may be installed or replaced only by an electrical contractor orinstaller authorised to perform such operations.2.4.2 Earth return cableFor creating a closed electric circuit needed in welding, you must connect the earth returncable to the connector located on the back of the FitWeld. The other end of this cable will beconnected to the workpiece before welding.NOTE! When attaching the earth return clamp to the work piece, remember to clean the work piecesurface so as to achieve safe and undisturbed operation.2.4.3 Shielding gasSecure the snap connector of the shielding gas hose to the gas connector on the back of theFitWeld machine. Connect the other end of the gas hose to a gas cylinder’s control valve or tothe shielding gas distribution network at your worksite.Make sure that you are using the correct type of shielding gas for the welding application.The shielding gas used for steel wires is carbon dioxide or a mixture of argonand carbon dioxide. The shielding gas used for stainless steel filler wires is a mixture of argonand carbon dioxide (2%). For aluminium filler wires use pure argon shielding gas.The thickness of the parent material, joint type and welding power define the requiredshielding gas flow rate.To connect the shielding gas hose to a suitable regulator for MIG/MAG welding1. Connect the shielding gas hose to the gas cylinder’s control valve and tighten theconnector (connector is not supplied in the package).2. Adjust the shielding gas flow rate with the control valve screw.3. Always close the cylinder valve after use.NOTE! The shielding gas flow rate set from the gas cylinder regulator must exceed the flow ratemeasured at the welding gun, if GasGuard function is active. If the flow rate and pressure are thesame, the gas indicator light will shine on the control panel and welding is prevented.See also instructions and warnings about adjusting the FitWeld's gas flow rate later in thismanual.5© Kemppi Oy / 1202