Lincoln Electric IM812-A - Manual (Page 12)

B-1 OPERATION
LN-35
B-1
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 insulat-
ing gloves.
ARC RAYS can burn.
• Wear eye, ear and body
protection.
------------------------------------------------------------------
FUMES AND GASSES can
be dangerous.
• Keep your head out of
fumes.
• Use ventilation or exhaust
to remove fumes from
breathing zone.
WELDING SPARKS can
cause fire or explosion.
• Keep flammable material
away.
GENERAL DESCRIPTION
The LN-35 is a semiautomatic wire feeder designed
for “across-the-arc” operation without a control cable
on most any DC welding power source. Simply
connect the LN-35 to the electrode cable, clip it to
Work and it is ready to weld, using up to 60 lb. coils
or spools.
RECOMMENDED PROCESSES
AND EQUIPMENT
When combined with the quality drive roll kits and
accessories available for use with the LN-35, a
versatile welding system can be provided to meet the
specific needs of Innershield or submerged arc
welding applications within the wire feed capabilities
of the LN-35.
The LN-35 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. Wire
speed is presettable on a calibrated dial.
The power sources recommended for use with the
LN-35 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.
WELDING CAPABILITY
The LN-35 will handle up to 500 Amp 60% duty cycle
welding currents.
LN-35 INSTRUMENTS AND
CONTROLS
“ELECTRODE POLARITY” SWITCH
The polarity switch is located on the center panel
inside the LN-35 case.
Set the switch to the same polarity as the electrode
lead connection to the power source. If the switch is
not set for the correct polarity, the wire feeder will not
operate.
WIRE FEED MODE SWITCH
The CV-VV (CC) Wire Feed Mode switch is located
on the center panel inside the LN-35 case.
The forward “CV” switch position provides constant
wire feed speed mode for use with constant voltage
(CV) welding power sources.
The backward “VV (CC)” switch position provides arc-
sensing wire feed speed mode for use with constant
current (formerly variable voltage) welding power
sources.
WIRE FEED SPEED CONTROL
This control sets the feed speed of the wire feeder.
Turn the knob to the left for slower speeds and to the
right for higher speeds. The control is calibrated. The
nameplate shows the wire speed for the given setting
of the control.
SAFETY PRECAUTIONS
READ AND UNDERSTAND ENTIRE SECTION
BEFORE OPERATING MACHINE
WARNING