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ACCESSORIESC-4
LN-7 GMA WIRE FEEDER
K418 GMA TIMER KIT
This kit is available to provide the following
functions:
1. Preflow Control – Provides flow of
shielding gas to the work before the arc
is established. The solenoid valve is
energized immediately when the gun
trigger is closed, but the time delay
before the wire feeder is energized is
adjustable to between 0 and 1.5
seconds.
2. Postflow Control – Provides flow of
shielding gas to the work after welding
is stopped. Solenoid valve shutoff delay
after the trigger is released is
adjustable from 0.5 to 4.5 seconds.
3. Burnback Control – Provides a precise
time delay that allows the wire to be
burned off at the end of the weld. The
delay is adjustable for optimum
burnback depending on the wire size,
process, procedure, etc.
4. Purge - Cold Inch Switch – Momentary
Up position energizes the gas solenoid
but not the wire feeder or welding
power source. Momentary down
position energizes the wire feeder but
not the welding power source or the gas
solenoid valve.
Installation and operation instructions
(M15059) are included with the kit.
K416 ANALOG VOLTMETER
KIT
Includes a 0 to 60 volt DC analog meter and
a polarity switch. It mounts in the hinged wire
drive section cover. Installation instructions
(M15080) are included with the kit.
K417 DIGITAL VOLTMETER
KIT
Includes a three digit LED display and a
polarity switch. Also includes a hold feature
that freezes the display for approximately six
seconds at the reading just prior to stopping
welding. This feature allows the operator to
easily check his procedure at the end of the
weld and make adjustments if required.
Installation instructions (M15080) are
included with the kit.
K775 OR K857 REMOTE
VOLTAGE CONTROL KIT
Either control installs on the side of the LN-7
GMA control box cover and gives voltage
control at the wire feeder.
K775 can be installed on the LN-7 GMA
when it is used with R3S, DC-250, DC-400,
CV-400, OR DC-600 power sources. A
control cable from the K775 attaches to the
power source terminal strip. See the
instructions (S14267) included with the kit.
K857 can be installed on the LN-7 GMA
when it is used with newer Lincoln power
sources such as the CV-300 with K856
remote kit installed. These power sources
are equipped with a 6-socket ms-type
receptacle for connection of the plug on the
28 ft (8.5 m) control cable of the K857. See
the instructions (S19103) included with the
kit.
A remote output is also available for use with
SAM power sources. See the SAM
Operating Manual.
K320 FLUX TANK
The K320 flux tank is available to permit the
LN-7 GMA to be used for submerged arc
welding.
Install per the instructions shipped with the
kit.