Operation; Safety Precautions; General Description; Recommended Processes And Equipment - Lincoln Electric LN-25 Service Manual

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SAFETY PRECAUTIONS

READ AND UNDERSTAND ENTIRE SECTION
BEFORE OPERATING MACHINE
WARNING
ELECTRIC SHOCK can kill.
¥Do not touch electrically live
part or electrode with skin or
wet clothing.
¥Insulate yourself from work
and ground.
¥Always wear dry insulating
gloves.
FUMES AND GASSES can
be dangerous.
¥Keep your head out of
fumes.
¥Use ventilation or exhaust to
remove fumes from breath-
WELDING
cause fire or explosion.
¥Keep flammable material
away.
ARC RAYS can burn.
¥Wear eye, ear and body pro-
tection.

OPERATION

SPARKS can
LN-25

GENERAL DESCRIPTION

The LN-25 is a lightweight portable semiautomatic
wire feeder designed for Òacross-the-arcÓ operation
without a control cable on most any DC welding power
source. Simply connect the LN-25 to the electrode
cable, clip it to W ork and it is ready to weld, using up
to 30 lb. coils or spools.
The wire drive, controls and wire reel are fully
enclosed in a rugged molded plastic case providing a
compact and versatile welding package ideally suited
to Òon-the-goÓ field welding applications in virtually any
environment.
RECOMMENDED PROCESSES
AND EQUIPMENT
When combined with the quality drive roll kits and
accessories available for use with the LN-25, a
versatile portable welding system can be provided to
meet the specific needs of Innershield, submerged arc
or gas metal arc welding applications within the wire
feed capabilities of the LN-25.
The LN-25 provides constant wire feed speed for use
with constant voltage (CV) power sources, and arc-
sensing wire feed speed for use with constant current
(CC) (formerly variable voltage) power sources. W
speed is presettable on a dual-range calibrated dial.
The power sources recommended for use with the LN-
25 include the DC-250, -400, -600, CV -400 and R3S
type transformer machines, and the SAM-400, -650
engine welders, as well as the SA-200, -250 or SAE-
300, -400 with CV Adapter and Pulse Power 500 with
K460-1 LN-25 Kit.

WELDING CAPABILITY

The LN-25 will handle up to 500 Amp 60% duty cycle
welding currents. However , when equipped with a
K443-1 Contactor , the LN-25 will handle up to 300
Amp 60% duty cycle.
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ire