KEMPOWELD 4200, 4200W, 5500W / 0531 – 3© KEMPPI OY1. PREFACE1.1. INTRODUCTIONCongratulations on having purchased this product. Properly installed Kemppi products should prove to be pro-ductive machines requiring maintenance at only regular intervals. This manual is arranged to give you a goodunderstanding of the equipment and its safe operation. It also contains maintenance information and technicalspecifications. Read this manual from front to back before installing, operating or maintaining the equipment forthe first time. For further information on Kemppi products please contact us or your nearest Kemppi distributor.The specifications and designs presented in this manual are subject to change without prior notice.In this document, for danger to life or injury the following symbol is used:Read the warning texts carefully and follow the instructions. Please also study the Operation safety instructionsand respect them when installing, operating and servicing the machine.1.2. PRODUCT INTRODUCTIONThe power sources Kempoweld 4200 and 4200W with wire feeder WIRE 400 make together 400 A MIG weldingequipment, which is suitable for heavy industrial use. Kempoweld 5500W and wire feeder WIRE 550 make respec-tively 550 A MIG welding equipment. To the product range belongs also the power source Kempoweld 3200.Power sourceSupply voltage of the Kempoweld 4200 is either 3~ 230 V or 3~ 400 V; of these both power sources exist alsotypes Kempoweld 4200W, which are equipped with inbuilt cooling unit. Kempoweld 5500W is a compact watercooled equipment with 3~ 400 V supply voltage. Voltage of power source is adjusted with turn type switches. TheVolt/Ampere metering unit MSD-1 displays voltage or welding current.Wire feeder unitThe wire feeder units WIRE 400 and WIRE 550 are 4-roll driven units, which are suitable for air- or liquid-cooledguns. The units may be turnable above the power source or they may be locked at their place. You can use the wirefeeder units equipped also with interconnection cable and push-pull gun. KMW timer controls continuous, spotand cycle-arc welding. KMW sync is needed for connection and use of push-pull guns.