Lincoln Electric IM901 LN-25 PRO - Manual (Page 17)

B-2 OPERATION B-2
LN-25™ PRO ACROSS THE ARC MODEL
DEFINITION OF WELDING TERMS
WFS
• Wire Feed Speed
CC
• Constant Current
CV
• Constant Voltage
GMAW
• Gas Metal Arc welding
SMAW
• Shielded Metal Arc welding
FCAW
• Flux Core Arc Welding
GENERAL DESCRIPTION
General Physical Description
The LN-25™ PRO is specially engineered to be the
most rugged portable wire feeder available.
Several models of the LN-25™ PRO are offered to
best meet individual welder needs. The Extra Torque
model features additional torque gearing for reliable
feeding of large diameter FCAW wires. All of the mod-
els include a gas solenoid and flow meter for the flexi-
bility to run most wire processes.
The plastic case is molded from a high impact, flame
retardant plastic for durability and low weight. The
patent pending design keeps the internal components
protected and dry.
The heart of the LN-25™ PRO is the 2 roll MAX-
TRAC™ drive. The patented features on the wire
drive offer tool-less changing of the drive rolls and
wire guides for quick spool changes. A tachometer
controlled motor powers the patent pending drive rolls
for smooth, steady feeding without slippage.
With only one p.c. board, the LN-25™ PRO is
designed to be simple, reliable and easy to service.
The p.c. board is mounted with Lincolnʼs leading envi-
ronmental design protection by mounting the board in
a plastic tray and potting it with epoxy.
General Functional Description
The LN-25™ PRO as designed is a simple, robust
feeder. Standard features include a calibrated wire
feed speed dial, 2 step/trigger interlock switch, CV-CC
switch, Gas Purge and Cold Feed.
RECOMMENDED PROCESSES
• GMAW
• FCAW
PROCESS LIMITATIONS
• GMAW-P procedures must be qualified by the cus-
tomer.
• Across-the-Arc models are not recommended for
stitch or spot welding.
EQUIPMENT LIMITATIONS
• The duty cycle of the wire feeder is 325A, 100% and
450A, 60%. Duty cycle is based upon the amount of
welding performed in a 10 minute period.
• The maximum spool size is 45 lb, 12" diameter.
• Maximum FCAW gun length is 15 ft.
• Maximum GMAW gun length is 25 ft.
• Push-pull guns do not work with the wire feeder.
• When using the digital meter kit, preset voltage is
accurate only with the following power sources:
Invertec V-350 CV-305
Invertec V-450 CV-400
DC-400
DC-600
DC-655
RECOMMENDED POWER SOURCES
• CV-250
• CV-300
• CV-305
• CV-400
• CV-655
• DC-400
• DC-600
• DC-655
• Invertec V-350 PRO
• Invertec V-450 PRO
• Multi-Weld 350
• Ranger 10,000
• Ranger 3 Phase
• Ranger GXT
• Ranger 250
• Ranger 305
• SAE-400
• Pipeliner 200G
• Classic 300
• Vantage 300
• Vantage 400
• Vantage 500
• Air Vantage 500