Kemppi Minarc 220 Operating Manual

Also see for 220: Operating manual Operation instructions Operating instructions

Contents

ENMinarc 220:This equipment complies with IEC 61000-3-12 provided that the short-circuitpower Ssc is greater than or equal to 1.6 MVA at the interface point betweenthe user's supply and the public supply network. It is the responsibility ofthe installer or user of the equipment to ensure, by consultation with thedistribution network operator if necessary, that the equipment is connectedonly to a supply with a short-circuit power Ssc greater than or equal to1.6 MVA.2.4 CABLE CONNECTIONSConnection to mainsMinarc 220 is delivered with a five-metre mains cable that does not have a plug.NOTE! Check the fuse size in Technical specifications. The plug may be installedonly by electrical contractors and installers authorised to perform suchoperations.If you use an extension power supply cord, its cross sectional area shouldbe at least as large as the supply voltage cable fitted to the machine. Themaximum length for the extension cable is 50 m.Restrictions on generator type and power may apply in generator use. Fault-free operation of the machine requires a sufficiently high-power generator.The power recommendation is more than 15 kVA.Earthing cableConnect the earthing cable to the negative pole in MMA welding, and to thepositive pole in TIG welding.Before you start welding, clean the work piece surface and fix the earthreturn clamp to the work piece in order to create a closed and interferencefree welding circuit.Shielding gasIn TIG welding, shielding gas is used to prevent atmospheric contamination ofthe molten weld pool and cooling weld. Normally, the shielding gas is argon(Ar). Normally the gas flow rate is approximately 8–15 litres per minute, but thiscan vary according to the welding current used and the size of gas nozzle.2.5 WELDING POWER SELECTION AND ELECTRODESMMA welding electrodesIn MMA welding, the welding electrodes must be connected to the correctpole. Normally, the electrode holder is connected to the positive and the6Minarc 220 / © Kemppi Oy / 1117