GENERAL DESCRIPTION
The Magnum®™ 400 DP Dual Procedure GMA gun and cable assemblies have been designed to meet NEMA specification EW3 for welding with steel elec- trode using the GMAW (gas metal arc welding) and gas-shielded FCAW (flux-cored arc welding) process- es. Magnum® 400 DP guns and cables are specifical- ly designed for use with wire feeders with dual proce- dure capabilities. The K574 gun is equipped with a two position trigger. Pulling the trigger in part of the way will engage the first procedure set at the feeder. Pulling the trigger the rest of the way will engage the second procedure. An interlocking trigger is available as a parts order. The K1722 Magnum® 400 DP Dual Proecdure gun and cables are also designed for use with wire feeders with dual procedure capabilities. The guns are equipped with a rocker switch that is used to select one of two welding procedures.
The K574 and K1722 are designed for use with K466 connector kits. The proper connector can be installed the same as with any Magnum® Gun. The gun con- trol cable connections however must be tailored to each specific machine. The K574 comes with control wires but no specific connectors are provided. The K1722 has a connector that will mate with any Lincoln -10 series wire feeder.
The Magnum® 400 DP guns are not factory equipped with a 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 feeding .052 and smaller electrodes. An optional K481 Magnum® Fast-Connect Gas Tube Kit is avail- able to provide tool-less gas tube connection to Lincoln wire feeders. Non-GMA model wire feeders require an optional gas solenoid valve.
The 400 DP 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® 400 guns directly to a variety of Miller and Hobart wire feeders, respec- tively.
The K466-5 connector kit allows connection of Magnum® 400 DP guns to an L Tec feeder connector assembly. L-Tec feeders require a feeder connector 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® 400 DP guns to a Lincoln Wirematic.
The K466-7 connector kit allows connection of Magnum® 400 DP guns to Hobart Series 2000 Wire Feeders.
The K466-8 connector kit allows connection of Magnum® 400 DP 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® 400 DP guns to a 10 Series wire feeder.
The Magnum® 400 DP gun and cable assemblies are fully compatible for use with comparable Tweco gun size tips, diffusers, gas nozzles, and cable liners. The Magnum® GMA gun family offers an expanding line of quality, long life, expendable replacement parts and accessories.
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 Lincoln Outershield cored electrodes for the gas- shielded FCAW process.
WARNING
•Do not touch electrically live parts such as output terminals or internal wiring
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