Lincoln Electric K1802-1, K2286-1, K470, K471, K514

MAINTENANCE

MAGNUM 300 & 400

THREAD SIZES FOR MAGNUM 300 & 400 CONSUMABLES

D-5D-5

Contents

Main MAGNUM 300 and 400 GMA GUN & CABLE ASSEMBLIES OPERATORS MANUAL IM381-D K574 is now located in IM646 Safety Depends on You FOR ENGINE powered equipment. i ELECTRIC AND MAGNETIC FIELDS may be dangerous ii ARC RAYS can burn. ELECTRIC SHOCK can kill. FUMES AND GASES can be dangerous. iii FOR ELECTRICALLY powered equipment. CYLINDER may explode if damaged. WELDING SPARKS can cause fire or explosion. iv Mar. 93 PRCAUTIONS DE SRET PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR vv Thank You Please Examine Carton and Equipment For Damage Immediately On-Line Product Registration TABLE OF CONTENTS vivi A-1A-1 GENERAL DESCRIPTION A-2A-2 MAGNUM 300 (300 amperes) AT 60% DUTYCYCLE WITH CO2GAS* K1802-1 Magnum 300 Gun has a factory installed feeder end connector. MAGNUM 400 COMPLETE ASSEMBLYWITH TWECO CONNECTOR (400 amperes) AT 60% DUTY CYCLE WITH CO2GAS* A-3A-3 K2286-1 Magnum 400 Gun has a factory installed feeder end connector. MAGNUM 400 (400 amperes)AT 60% DUTY CYCLE WITH CO2GAS* MAGNUM 400 SHORT NECK (400 amperes at reduced duty cycle) 40% WITH CO2GAS* A-4A-4 * May also be used with other gases at reduced rating (up to 30%) ** Feeder Kits installed on the gun at the factory. * May also be used with other gases at reduced rating (up to 30%) CONNECTOR KIT INSTALLATION TO GUN CABLE B-1B-1 B-2B-2 B-3B-3 CONNECTION TO FEEDER B-4B-4 B-5B-5 OPERATION C-1C-1 ELECTRODES AND EQUIPMENT MAKING A WELD AVOIDING WIRE FEEDING PROBLEMS REMOVAL, INSTALLATION AND TRIMMING INSTRUCTIONS FOR MAGNUM LINERS D-1D-1 GUN TUBES AND NOZZLES GUN CABLES CABLE REPAIR (ALL K470, K471 & K541 MODELS) D-2D-2 D-3D-3 D-4D-4 Page TROUBLESHOOTING E-1E-1 (SYMPTOMS) POSSIBLE CAUSE REMEDY TROUBLESHOOTING E-2E-2 (SYMPTOMS) POSSIBLE CAUSE REMEDY Page Page AVISO DE PRECAUCION ATTENTION WARNUNG ATENO AVISO DE PRECAUCION ATTENTION WARNUNG ATENO

Lincoln Electric - page 22

Models: K1802-1 K2286-1 K470 K471 K514