Kemppi Minarc 220 Operating Manual

Also see for 220: Operating manual Operation instructions Operating instructions

Contents

ENMMA WeldingThe MMA is a simple welding process. A coated MMA electrode is shortcircuited to the work piece and the resulting electric arc creates a moltenpool into which the electrode wire melts. The coating around the electrodeburns to create a protective gaseous atmosphere and slag, which directlyprotects the molten weld pool from atmospheric contamination. The slagfloats on the molten weld pool and solidifies on the surface of the resultingweld bead, protecting the cooling weld.The electrode is moved slowly along the weld seam. The travel speedis directly proportional to the size of the electrode and welding currentselected. The slag is finally removed with a chipping hammer to reveal theweld (always use eye protection).TIG WeldingIn TIG welding, the welding arc is formed between a non-consumabletungsten electrode and the work piece. The resulting high temperature arcmelts the work piece to form a molten pool, into which filler wire of a similaralloy composition is slowly melted. The molten weld pool and filler wire areprotected from the harmful effects of atmospheric contamination by an inertshielding gas that flows out from the TIG welding torch’s ceramic nozzle at arate of approximately 8–15 litres per minute. (Gas regulator, flow meter andpure argon shielding gas are not provided in this package.)2. MACHINE USE2.1 BEFORE COMMISSIONING THE MACHINEMinarc 220 is packed in sturdy, custom-made packaging. However, alwaysensure that the equipment has not been damaged in transportation. Even so,make sure that all in-transport damage is reported to the machine supplier.Do not unpack the machine under these circumstances. In addition, beforecommissioning, check that you have received all of the items you orderedalong with their operating instructions.TransportationThe machine should be transported in an upright position.EnvironmentThe machine is suitable for both indoor and outdoor use. In outdoor use,protect it from heavy rain and sunshine. Store the machine in a dry and clean4Minarc 220 / © Kemppi Oy / 1117