Lincoln Electric IM991 LN-25 PRO DUAL POWER - Manual (Page 20)

B-2 OPERATION B-2
LN-25™ PRO DUAL POWER
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 engineered to
be the most rugged portable wire feeder available.
The plastic case is molded from a high impact, flame retar-
dant plastic for durability and low weight. The patent pend-
ing 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 inter-
lock 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 electron-
ic circuit to allow easy transition from Across the Arc opera-
tion to Control Cable operation. Simply connect the work clip
and the electrode lead for Across the Arc welding.
Whenever a control cable is connected, the feeder switches
to Control Cable operation.
To improve contactor life, the contactor is always closed
when operating as a control cable feeder.
RECOMMENDED PROCESSES
• GMAW
• FCAW
PROCESS LIMITATIONS
• GMAW-P procedures must be qualified by the customer.
• 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 weld-
ing 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
• STT-II
• Invertec V-350 PRO
• Invertec V-450 PRO
• Multi-Weld 350
• Ranger 10,000 • 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 Redʼs
• Eagle 10,000 Plus
• Classicʼs