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CONTACT TIP AND GAS NOZZLE INSTALLATION
a.Choose the correct size contact tip for the elec- trode being used (wire size is stenciled on the side of the contact tip) and screw it snugly into the gas diffuser.
b.Be sure the nozzle insulator is fully screwed onto the gun tube and does not block the gas holes in the diffuser. (NOTE: Insulator is not required when using the optional fixed gas nozzles.)
c.Slip the appropriate gas nozzle onto the nozzle insulator. Adjustable gas nozzles are available with a .62” (15.9 mm) or .50” (12.7 mm) I.D., and in both standard (flush) and recessed design. The proper nozzle should be selected based on the welding application. Different length fixed nozzles are also available to fit 400 amp gun tubes to allow either spray or
Choose the gas nozzle as appropriate for the GMAW process to be used. Typically, the contact tip end should be flush to .12” (3 mm) extended for the
mm)recessed for spray transfer and for the Outershield7 (FCAW) process.
CONNECTION TO FEEDER
NOTE: The K574 Magnum® 400 DS is shipped with generic gun control cables, therefore Section (c) will not apply. The gun control cables must be tailored, by the user, to each specific wire feeder. The cables are identified as procedure 1 and 2.
To install on Lincoln wirefeeders equipped with a dual procedure kit, connect the cable marked "1" to the 5 pin amphenol located on the feeder case front. The cable marked "2" should be connected to the 3 pin amphenol located on the dual procedure box.
CONNECTION TO LINCOLN FEEDERS
Gun cable assemblies which were assembled with a
a.Check that the drive roll(s) and feeder guide tubes are appropriate for the electrode size being used.
b.Fully push the brass connector end of the gun cable into the conductor block on the outgoing side of the feeder wire drive. Secure the cable using the hand screw or set screw in the conductor block.
c.Insert the control cable plug from the gun into the mating sockets on the wire feeder.
d.Slide the free end of the flexible hose onto the barbed gas fitting on the front of the Lincoln feeder. Move the corresponding tubing clamp down near the end of the tube to assure a good gas seal.
CONNECTION TO ADAPTED FEEDERS
Gun cable assemblies which were assembled with a
a.Check that the adapter and feeder outgoing guide, as well as the drive roll, are appropriate for the electrode size being used.
b.Fully push the brass connector end of the gun cable into the brass adapter on the outgoing side of the feeder wire drive. Secure the cable using the hand screw or set screw in the adapter.
c.Insert the control cable plug into the mating socket on the wire feeder.
MAGNUM® 400 DUAL PROCEDURE GUNS
