GENERAL DESCRIPTION
The Magnum™ 300 amp and 400 amp GMA gun and cable assemblies have been designed to meet NEMA specification EW3 for welding with steel electrode using the GMAW (gas metal arc welding) and gas- shielded FCAW (flux-cored arc welding) processes.
Most models of Magnum 300 and 400 guns are not factory equipped with a feeder end connector, except K1802-1 and K2286-1, (they have a factory installed feeder end connector). With the K466-1 Magnum Connector Kit, they can be used with any Lincoln LN- 7 or LN-25 semiautomatic wire feeder. The K466-1 should also be used with the LN-8 or LN-9 when feed- ing .052 and smaller electrodes. An optional K481 Magnum Fast-Connect Gas Tube Kit is available to provide tool-less gas tube connection to Lincoln wire feeders. Non-GMA model wire feeders require an optional gas solenoid valve.
The 300 and 400 guns can also be used with any wire feeder equipped with a Tweco® #1, 2, 3, 350 or 4 wire feed adapter kit by using the K466-2 Magnum Connector Kit.
With the K466-3 or K466-4 Magnum connector kits, it is possible to connect Magnum 300 and 400 guns directly to a variety of Miller and Hobart wire feeders, respectively.
The K466-5 connector kit allows connection of Magnum 300 and 400 guns to an L Tec feeder con- nector assembly. L-Tec feeders require a feeder con- nector assembly (similar to a Tweco® adapter) in order to connect to a gun and cable. The K466-5 contains a brass connector to permit Magnum guns to be con- nected to this feeder connector assembly.
The K466-6 connector kit allows connection of Magnum 300 and 400 guns to a Lincoln Wirematic.
The K466-7 connector kit allows connection of Magnum 300 and 400 guns to Hobart Series 2000 Wire Feeders.
The K466-8 connector kit allows connection of Magnum 300 and 400 guns to an LN8 or LN9 when 1/16 and larger electrode is used.
The K466-9 connector kit allows connection of K497 to SP100T and related wire feeders.
The K466-10 connector kit allows connection of Magnum 300 and 400 guns to a 10 Series wire feeder.
For best results when welding mild and alloy steels, it is recommended that L-50 or L-56 Lincoln solid wire electrodes be used for the GMAW process and OS70 or OS71 Lincoln Outershield cored electrodes for the gas-shielded FCAW process.
WARNING
•Do not touch electrically live parts such as output terminals or inter- nal wiring
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