General Description; Recommended Processes And Equipment; Dc Constant Voltage Power Sources - Lincoln Electric LN-9 SVM127-A Service Manual

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GENERAL DESCRIPTION

The LN-9 2-Roll and 4-Roll semiautomatic wire feeder
models feature the precise "set and forget" digital pro-
cedure control. They are designed to achieve higher
quality control and weld quality levels more easily. The
arc voltage and wire feed speed can be set on a digital
meter before the arc is struck and the procedure
remains precisely set day in and day out.
The wire feed speed and arc voltage can be "SET"
before or during welding, and the "ACTUAL" values
can be read during welding. Wire feed speed and arc
voltage will be held virtually constant regardless of
input voltage variation, feeding force, loading of the
power source, ambient temperature changes or a volt-
age drop in the electrode or ground circuit.
• Two drive rolls (driven) are used with calibrated idle
roll pressure setting. Rolls are available for feeding
.030 thru 3/32" solid and .045 through .120" flux
cored steel electrodes, as well as .035 through 1/16
aluminum wires.
• Four drive rolls (driven) are available and they work
on a "quick release"mechanism for easy access to
drive rolls and guide tubes. Drive roll kits are avail-
able for the same electrode sizes as the 2-roll
feeders.
RECOMMENDED PROCESSES AND
EQUIPMENT
When combined with the broad selection of quality
welding equipment and accessories, the LN-9 pro-
vides a versatile precision welding system to meet the
specific needs of Outershield
merged arc welding processes. The capabilities of the
LN-9 2-Roll and 4-Roll wire feeders are:
Rated wire size range:
.030 through 3/32" solid wire electrode.
.045 through .120" Outershield
.062 through 7/64" lnnershield
Rated wire speed range:
50 through 600 inches per minute.
(1.27 through 15.2 meters per minute).
OPERATION
® , Innershield ® or sub-
® cored electrode.
® cored electrode.
LN-9 Wire Feeder
DC CONSTANT VOLTAGE POWER
SOURCES
The following welding system power sources are avail-
able for use with all LN-9 models:
The Idealarc DC-250, DC-400, CV-400 and DC-600
®
are recommended for use with any LN-9 model. The
Pulse Power 500 and DC650 Pro can also be used
with the LN-9 with the installation of the optional K442-
1 Pulse Power Filter Kit.
SAM power sources may also be used.
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