Lincoln Electric LN-25 User Manual

Description

Output

MIG Flux-Cored

LN-25 Wire Feeder

Portable, Construction Wire Feeder

The LN-25 semiautomatic wire feeder is ideal for field or construction use. Since it is powered across the arc, no control cables are needed! Simply connect the weld cable, attach the arc sensing clip, and you’re ready to go. This portable MIG and flux-cored wire feeder comes in a fully enclosed case to protect against damage on the job site. The LN-25 features a tool-less quick release mechanism for easy wire changing, and it accepts 10-44 lbs. (4.5-19.9 kg) wire packages for plenty of welding versatility.

Processes

Advantage Lincoln

Required Options

Order

TECHNICAL SPECIFICATIONS

Recommended General Options

• For MIG and flux-cored arc welding processes using up to 44 lb. (19.9 kg) spools.

• Designed for .023-1/16" (0.6-1.6mm) solid, .035-5/64" (0.9-2.0mm) cored and .035-1/16" (0.9-1.6mm) aluminum wire sizes.

• Selectable dial for setting low range, 50-350 ipm (1.3-8.9m/min) wire feed speed or high range, 50-700 ipm (1.3-17.8m/min) wire feed speed.

• Includes DC voltmeter, voltmeter polarity switch and 15 ft. (4.6m) arc sensing lead and clip and 20" (508mm) weld power cable.

• For use with Magnum® flux-cored and MIG guns.

• Automatic overvoltage and motor overload shutdown protection.

• Double-latched case features an insulated gun holder and easy access to wire.

• Entire unit is compact and portable and will pass through a 16" (400mm) diameter manway.

• Manufactured under a quality system certified to ISO 9001 requirements.

• Three-year warranty on parts and labor.

Recommended Power Source Options

SEMIAUTOMATIC WIRE FEEDERS

Gun and Cable Assembly, Drive Roll Kit, Weld Power Cable, Cable Lug, Twist-Mate Cable Plug

Base Unit Includes

Arc Sensing Lead & Clip,15 ft. (4.5m), Weld Power Cable, 20" (508mm)

K428 LN-25 Wire Feeder

K449 LN-25 Wire Feeder with Internal Contactor

and Gas Solenoid

Jumper Plug Kit, Remote Voltage and Output Control Kits, Gas Solenoid Kit, Internal Contactor Kit, Gas Flow Timer Kit, 30 lb. Adapter, Spindle Adapter

All Lincoln Engine Driven or Electric Welders with CV Capability

Wire Feed Wire Size Range Dimensions Net

Product Product Input Rated Output Speed Range in. (mm) H x W x D Weight

Name Number Power Current / Duty Cycle ipm (m/min.) Solid Aluminum Cored in. (mm) lbs. (kg)

K428 15-40V DC Up to 500A / 60%

LN-25 (110V DC 50 - 700 .023 - 1/16" .035 - 1/16" .035 - 5/64" 14 x 7.4 x 21

(12.7)

Across-The-Arc Max. OCV) (1.2 - 17.7) .(0.6 - 1.6) (0.9 - 1.6) (0.9 - 2.0) (356 x 188 x 533)

K449 Up to 300A / 60% 35

(15.4)

Publication E8.100 11/03

www.lincolnelectric.com

[2]

A CLOSER LOOK

LN-25 Wire Feeder

www.lincolnelectric.com

PERFORMANCE

• 2-roll wire drive system for easy wire feeding.

• The LN-25 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) power sources

(1)

• Dynamic braking system stops wire feed motor quickly to minimize crater sticking problems.

(1) Most semiautomatic wire welding processes perform better using CV power sources.

Be sure the proper power source is used for your application. Contactor life may be shortened in applications using CC power sources with high OCV.

QUALITY AND RELIABILITY

• Fully enclosed molded case meets UL94-VO flammability resistance and is heat, spatter, and impact resistant.

• Automatic overvoltage and motor overload shutdown protection.

• Three-year warranty on parts and labor.

• Manufactured under a quality system certified to ISO 9001 requirements.

• CSA approved.

FEATURES

• Tool-less quick release wire drive tension system and gun cable connections for easy wire or gun changes.

• Optional gas solenoid, timer kit for preflow and postflow of gas, internal contactor, and remote voltage control kits are available.

• Standard Voltmeter

Key Controls

1. Optional Remote Voltage Control

2. Optional Gas Timer Flow Kit

3. Voltmeter Polarity Switch

4. Trigger Connection

5. Arc Sensing Lead and Clip

6. Skid Plate

7. Riveted Door and Hinge Assembly

8. Gun and Cable Connection

9. Voltmeter

10. Molded Case Door

11. Case Latches

12. Fold Down Carrying Handle

[3]

SYSTEM SELECTION

LN-25 Wire Feeder

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Electrode cold operation is available with K449 or K428 (with optional K443-2 Internal Contactor Kit installed).

(Connections are for current equipment design. Subject to change without notice.)

ACROSS THE ARC SET-UP (with Electrode Cold Operation)

Power source contactor switch must be in the “ON” position or use K484 Jumper Plug Kit.

Order K484 Jumper Plug Kit.

CC Power Source, RangerTM10,000, Ranger 3 Phase, SAE 400 with CV Adapter

Magnum gun and

cable assembly

Weld Power Cable

LN-25 Wire Feeder

K449 or K428 (with K443-2)

LN-25 Wire Feeder

K449 or K428 (with K443-2)

LN-25 Wire Feeder

K449 or K428 (with K443-2)

LN-25 Wire Feeder

K449 or K428 (with K443-2)

Output Terminals Always Hot.

Ranger 250, Ranger 250 LPG, Ranger 305G, Ranger 305D, Commander® 300, Vantage® 500, Air Vantage® 500, Engine Driven Welders

with Wire Feed Module

(local/remote switch in local position)

Power source contactor switch must be in the “ON” position.

Magnum gun and

cable assembly

Weld Power Cable

Output Terminals Always Hot.

CV-250, CV-300, CV-400, CV400-I, CV500-I

Magnum gun and

cable assembly

Weld Power Cable

14 Pin

CV-655, DC-400, DC-600, DC-655, V350-PRO

Magnum gun and

cable assembly

Weld Power Cable

14 Pin

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