Lincoln Electric MAGNUM 300FM - Manual (Page 10)

INSTALLATION
INSTALLATION
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™
WARNING
B-1 B-1