Installation

B-1

B-1

INSTALLATION

WARNING

ELECTRICAL SHOCK can kill.

•Have an electrician install and ser- vice this equipment.

•Turn the input power off at the fuse box before working on equipment.

•Do not touch electrically hot parts.

The K478 and K479 Magnum® FM guns are factory installed with a Fast-Mate (European style) wire feeder connector for “all-in-one” GMAW feeder connection. A single connector attaches welding current, wire liner, shielding gas, and trigger control leads to the feeder. Optional Magnum® Fast-Mate Adapters allow the use of these guns with Lincoln and competative wire feed- ers. See the Parts Section “Chart E” for information on which Fast-Mate Adapter Kit to use with various equipment.

NOTE: These guns are shipped with factory installed liner. To change the liner in these models, see the sec- tion on liner removal instructions in the Maintenance section.

CONTACT TIP AND GAS NOZZLE INSTALLATION

a)Choose the correct size contact tip for the electrode 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, for the 300 and 400 amp guns. The proper nozzle should be selected based on the welding application. Different length fixed nozzles are also available to fit 300 and 400 amp gun tubes to allow either spray or short-cir- cuiting transfer welding.

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 short-circuiting transfer process and .12” (3 mm) recessed for spray transfer and for the Outershield® (FCAW) process.

CONNECTION TO FAST-MATE COMPATIBLE FEEDERS

FM model gun cable assemblies will connect easily to any feeder equipped with a European style gun con- nector or Lincoln or competative wire feeder equipped with the proper K489 Fast-Mate Adapter Kit. See the Parts Section “Chart E” for information on which Fast- Mate Adapter Kit to use with various equipment.

1)Check that the feeder outgoing guide, as well as the drive roll, are appropriate for the electrode size being used. When using a Fast-Mate Adapter Kit, be certain the adapter guide tube is also properly sized.

2)Align and fully engage the brass connector end of the gun cable into the mating connector on the out- going side of the feeder wire drive. Secure the cable connection by snugging the Fast-Mate connector collar nut.

INSTALLATION OF THE K489-[ ] FAST-MATE™

ADAPTER KITS

See “Chart E” in the PARTS section for information on which Fast-Mate Adapter Kit to use with various equip- ment.

Refer to the installation instructions that were sent with the kit for detailed installation instructions.

MAGNUM® FAST-MATE™