Lincoln Electric IM381 K470-,K471-,K541-,K1802-1, K2286-1,K2951-,K2952-,K3055- MAGNUM & MAGNUM PRO CURVE 300 - Manual (Page 8)

GENERAL DESCRIPTION
MAGNUM® & MAGNUM® PRO CURVE GUNS
A-1 A-1
GENERAL DESCRIPTION
The MAGNUM® & MAGNUM® PRO CURVE 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® & MAGNUM® PRO
CURVE 300 and 400 guns are not factory equipped
with a feeder end connector, except K1802-1, K2286-
1, K2951-2-10-45, K2151-2-6-45 and K2952-10-45
(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 semiautomat-
ic wire feeder. The K466-1 should also be used with
the LN-8 or LN-9 when feeding .052 and smaller elec-
trodes. 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® & MAGNUM®
PRO CURVE 300 and 400 guns directly to a variety of
Miller and Hobart wire feeders, respectively.
The K466-5 connector kit allows connection of MAG-
NUM® & MAGNUM® PRO CURVE 300 and 400 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 per-
mit MAGNUM® & MAGNUM® PRO CURVE guns to
be connected to this feeder connector assembly.
The K466-6 connector kit allows connection of MAG-
NUM® & MAGNUM® PRO CURVE 300 and 400 guns
to a Lincoln Wirematic.
The K466-7 connector kit allows connection of MAG-
NUM® & MAGNUM® PRO CURVE 300 and 400 guns
to Hobart Series 2000 Wire Feeders.
The K466-8 connector kit allows connection of MAG-
NUM® & MAGNUM® PRO CURVE 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 MAG-
NUM® & MAGNUM® PRO CURVE 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.
• Do not touch electrically live parts
such as output terminals or inter-
nal wiring.
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WARNING