Definition Of Welding Terms - Lincoln Electric LN-25 PRO DUAL POWER Service Manual

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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 DUAL POWER is specially engi-
neered to be the most rugged portable wire feeder
available.
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 DUAL POWER is the 2
roll MAXTRAC™ 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.
General Functional Description
The LN-25™ PRO DUAL POWER as designed is a
simple, robust feeder. Standard features include 2
step/trigger interlock switch, CV-CC switch, Gas Purge
and Cold Feed.
The digital meters display arc voltage, arc amperage
and preset wirefeed speed.
The Dual Power LN-25™ PRO has a patent pending
electronic circuit to allow easy transition from Across
the Arc operation to Control Cable operation. Simply
connect the work clip and the electrode lead for Across
the Arc welding. Whenever a control cable is connect-
ed, the feeder switches to Control Cable operation.
To improve contactor life, the contactor is always
closed when operating as a control cable feeder.
OPERATION
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.
• Digital displays do not show preset voltage.
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
LN-25™ PRO DUAL POWER
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• Ranger 3 Phase
• Ranger 225
• Ranger 225 GXT
• Ranger 250
• Ranger 250 GXT
• Ranger 305
• SAE-400
• Pipeliner 200G
• Classic 300
• Vantage 300
• Vantage 400
• Vantage 500
• Air Vantage 500
• Big Red's
• Eagle 10,000 Plus
• Classic's