Options And Accessories; K430-2 Gas Solenoid Kit; K434-1 Gas Flow Timer Kit - Lincoln Electric LN-25 Operator's Manual

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WARNING
ELECTRIC SHOCK can kill.
• Do not operate with covers
removed.
• Turn off power source before
installing or servicing.
• Do not touch electrically hot
parts.
• Turn the input power to the
welding power source off at
the fuse box before working
in the terminal strip.
• Only qualified personnel
should install, use or service
this equipment.

K430-2 GAS SOLENOID KIT

(For Codes above 10500 only)
(Factory Installed on K446 and K449 Models)
The kit permits the LN-25 to be used for Gas
Metal Arc Welding (GMAW) processes with a
GMA gun cable.
The kit can be used with or without a Remote Output
Control option installed in the LN-25 and provides
flow of shielding gas:
1. With wire feed, when the gun trigger is closed.
2. Without wire feed, when the kit's Purge button
(located beneath the gas inlet fitting) is pressed.
NOTE: Always shut off the valve at the gas cylinder
before making any gas connections to the LN-25.
User must provide a supply of shielding gas, a pres-
sure regulator, a flow control valve and a hose from
the flow valve to the gas inlet fitting of the LN-25.
Install by connecting a supply hose from the gas flow
valve outlet to the 5 ⁄ -18 female inert gas fitting on the
8
back panel of the LN-25 case.
The LN-25 can be used with any shielding gas
recommended in the electrode's product literature at
a maximum pressure of 60 psi (4.1 bar). This may
include gases such as Argon, Helium, Nitrogen and
blended gasses such as Ar-He, Ar-N 2 , Ar-O 2 , Ar-
CO 2 , CO 2 , Ar-CO 2 -O 2 .
ACCESSORIES
OPTIONAL ACCESSORIES
LN-25
WARNING
CYLINDER may explode if
damaged.
• Keep cylinder upright and
chained to support.
• Keep cylinder away from areas where it may be
damaged.
• Never lift welder with cylinder attached.
• Never allow welding electrode to touch cylinder.
• Keep cylinder away from welding or other live elec-
trical circuits.
• See American National Standard Z-49.1, "Safety in Welding and
Cutting" published by the American Welding Society.
See GMA Gun Cable Gas Connection.
Installation instructions (M19154) are included with
the kit.

K434-1 GAS FLOW TIMER KIT

(Requires either a K431-1 Remote Output Control Kit,
K460-1 Pulse Power Adapter Kit, K624-1 42V
Remote Output Control Kit, or internal contactor
K443-1 installed in LN-25).
The K434-1 Gas Flow Timer Kit is used with the
LN-25 Gas Solenoid when the LN-25 is equipped
with any of the Remote Output Control Options or
internal contactor.
T h i s k i t p r o v i d e s t h e f o l l o w i n g g a s f l o w timer 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 and welding output
are energized is adjustable between at least
0 to 1 second.
2. Postflow Control - Provides flow of shielding
gas to the work after welding is stopped. Delay
of the shut off of the solenoid valve after the gun
trigger is released is adjustable between at least
0.5 to 5 seconds.
Installation instructions (M17590) are included with
this kit.
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