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
equired Options
Order
TECHNICAL SPECIFICATIONS
ecommended 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.
ecommended 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 Num er Power Current / Duty Cycle ipm (m/min.) Solid Aluminum Cored in. (mm) l s. (kg)
K428 15-40V DC Up to 500A / 60% 28
LN-25 (110V DC 50 - 700 .023 - 1/16" .035 - 1/16" .035 - 5/64" 14 x 7.4 x 21 (12.7)
Acro -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
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[2]
A CLOSER LOOK
LN-25 Wire Feeder
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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
1
12
10
2
3
4
11
9
7
8
5
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
6

[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. ubject to change without notice.)
ACROSS THE ARC SET-UP (with Electro e Col 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,
RangerTM 10,000,
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.
Output Terminals
Always Hot.
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

[4]
SYSTEM SELECTION
LN-25 Wire Feeder
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ACROSS THE ARC SET-UP (with Electro e Col Operation an Remote Voltage Control at LN-25)
Magnum gun and
cable assembly
Output Terminals Always Hot.
Output Terminals Always Hot.
Electrode cold operation is available with K449 or K428 (with optional K443-2 Internal Contactor Kit installed).
(Connections are for current equipment design. ubject to change without notice.)
RangerTM 250,
Ranger 250 LPG,
Ranger 305G,
Ranger 305D,
Commander®300,
Vantage®500,
Air Vantage®500
Magnum gun and
cable assembly
Ranger 250, Ranger 250 LPG,
Ranger 305G,
Ranger 305D,
Commander 300,
Vantage 500,
Air Vantage 500,
CV-250, CV-300,
CV-400, CV-655,
DC-400, DC-600 (Above
Code 10500), CV400-I,
CV500-I, V350-PRO,
Engine Driven Welders
with Wire Feed Module
(local/remote switch in remote position)
K444-1 Remote
Voltage Control Kit
K444-2 Remote Voltage Control Kit
K444-2 has built-in jumper to keep contactor in
power source closed all the time.
6 Pin
14 Pin
LN-25 Wire Feeder
K449 or K428 (with K443-2
LN-25 Wire Feeder
K449 or K428 (with K443-2
Weld Power Cable
Weld Power Cable
Power Source Contactor Switch must
be in the “ON” position.

LN-25 Wire Feeder
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[5]
SYSTEM SELECTION
ACROSS THE ARC SET-UP (with Electro e Col Operation an Remote Voltage Control at LN-25)
WELD POWER CABLE SET-UP
CV-250, CV-300,
CV400-I, CV500-I,
CV-655, V350-PRO,
DC-400, DC-600,
DC-655, Ranger 250,
Ranger 250 LPG,
Ranger 305G,
Ranger 305D,
Commander 300,
Vantage 500,
Air Vantage 500
K624-1
Remote Output
Control Module
Magnum gun and
cable assembly
LN-25 Wire Feeder
K428 model only
14 Pin
For LN-25 K428 Model without Internal Contactor.
(Connections are for current equipment design. ubject to change without notice.)
42 Volt emote Output Control Systems
Control Cable and Extensions
K1819-10 Wire Feeder Control Cable, 10 ft. (3.0m)
K1797-25 14-pin Extension Control Cable, 25 ft. (7.6m)
K1797-50 14-pin Extension Control Cable, 50 ft. (15.2m)
Weld Power Cables
K1841-25 Twist-Mate to Twist-Mate, 1/0, 350A, 60% duty cycle, 25 ft. (7.6m)
K1841-50 Twist-Mate to Twist-Mate, 2/0, 350A, 60% duty cycle, 50 ft. (15.2m)
Twist-Mate Cable Plugs
K852-70 for 1/0-2/0 cable
K852-95 for 2/0-3/0 cable
Weld Power Cables
K1842-10 Lug to Lug, 3/0, 600A, 60% duty cycle, 10 ft. (3.0m)
K1842-35 Lug to Lug, 3/0, 600A, 60% duty cycle, 35 ft. (10.6m)
K1842-60 Lug to Lug, 3/0, 600A, 60% duty cycle, 60 ft. (18.2m)
K1842-110 Lug to Lug, 4/0, 600A, 60% duty cycle, 110 ft. (33.5m)
Cable Lug
S1119-14 for 1/0-2/0 cable
Weld Power Cable
K1819-10 Wire Feeder
Control Cable
CV-250,
CV-300,
CV400-I,
CV500-I,
V350-PRO
CV-400, CV-655,
DC-400, DC-600,
DC-655, Ranger 250,
Ranger 250 LPG,
Ranger 305G,
Ranger 305D,
Commander 300,
Vantage 500,
Air Vantage 500
Engine Driven Welders
w/Wire Feed Module
Magnum gun and
cable assembly
LN-25 Wire Feeder
K428 model only
Weld Power Cable
Magnum gun and
cable assembly
LN-25 Wire Feeder
K428 model only
Weld Power Cable
Twist-Mate Cable Plug
Cable Lug

[6]
RECOMMENDED OPTIONS
LN-25 Wire Feeder
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REQUIRED OPTIONS
Magnum Gas-Shielded Gun and
Cable Assemblies
Available 200-550 amps, air-cooled,
gas-shielded welding guns.
See publication E12.10
Magnum Self-Shielded Gun and
Cable Assemblies
Available 250-600 amps.
See publication E12.110
REQUIRED OPTIONS, CON'T
Twist-Mate Cable Plug
For connecting welding cable to
output terminal receptacles. For
1/0 – 2/0 (50 – 70 mm2) cable.
Order K852-70
Twist-Mate Cable Plug
For connecting welding cable to
output terminal receptacles. For
2/0 – 3/0 (70 – 95 mm2) cable.
Order K852-95
Cable Lug
For #1 1/0-2/0 cable.
Order S1119-14
GENERAL OPTIONS
Jumper Plug Kit
For use with CV only power sources
with 14 pin MS-type wire feeder
connections and no contactor con-
trol switch. Jumper plug kit closes
contactor for always hot welding
output.
Order K484
Terminal Strip emote Voltage
Control Kit
Provides 25 ft. (7.6m) of remote
output voltage control with power
sources having a terminal strip.
Order K444
6 Pin emote Voltage Control Kit
Provides 25 ft. (7.6m) of remote
voltage control when used with
power sources having a 6 pin
MS-type connector.
Order K444-1
14 Pin emote Voltage Control Kit
Provides 25 ft. (7.6m) of remote
output voltage control and output
jumper (2 and 4) for power sources
having a 14 pin MS-type connector.
Order K444-2
42 Volt emote Output Control
Module
Provides remote voltage control and
power source output control.
Requires 42 volt auxiliary power.
Mounts inside LN-25 control box.
Requires K1819-10 Wire Feeder
Control Cable.
Order K624-1
DRIVE ROLL AND GUIDE TUBE KITS
45 6
WELD POWER CABLES
Wire Type Order
and Sizes Num er
Solid Wire:
.023 - .025" (0.6 mm) KP653-025S
.030" (0.8 mm) KP653-030S
.035" (0.9 mm) KP653-035S
.045 - .052" (1.2 - 1.4 mm) KP653-052S
Cored Wire:
.035" (0.9 mm) KP653-035C
.045 - .052" (1.2 - 1.4 mm) KP653-052C
Solid or Cored Wire:
.052 - 1/16" (1.3 - 1.6 mm) KP653-1/16
.068 - 5/64" (1.7 - 2.0 mm) KP653-3/32
Aluminum Wire:
.035" (0.9 mm) KP654-035A
3/64" (1.2 mm) KP654-3/64A
1/16” (1.6 mm) KP654-1/16A
Aluminum Wire (Clutched Drive Roll):
.035" (0.9 mm) KP1682-035A
1.0 mm KP1682-1.0A
3/64" (1.2 mm) KP1682-3/64A
1/16” (1.6 mm) KP1682-1/16A
Order No. Description
K1841-25 Twi t-Mate to Twi t-Mate, 1/0, 350A, 60% duty cycle, 25 ft. (7.6m)
K1841-50 Twi t-Mate to Twi t-Mate, 2/0, 350A, 60% duty cycle, 50 ft. (15.2m)
K1842-10 Lug to Lug, 3/0, 600A, 60% duty cycle, 10 ft. (3.0m)
K1842-35 Lug to Lug, 3/0, 600A, 60% duty cycle, 35 ft. (10.6m)
K1842-60 Lug to Lug, 3/0, 600A, 60% duty cycle, 60 ft. (18.2m)
K1842-110 Lug to Lug, 4/0, 600A, 60% duty cycle, 110 ft. (33.5m)
Magnum 400 shown
K126 Innershield Gun
shown

LN-25 Wire Feeder
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[7]
RECOMMENDED OPTIONS
Wire Feeder Control Cable
10 ft. (3.0m) power source to wire
feeder cable. Male 9 pin to female
14 pin.
Order K1819-10
Wire Feeder Control Cable
Extension
Male 14 pin to female 14 pin.
(Requires K1819-10.)
Order K1797-25 for 25 ft.
Order K1797-50 for 50 ft.
Gas Solenoid Kit
Includes solenoid valve and mount-
ing bracket. For K428 LN-25 model
only. (Standard on K449 LN-25
model.)
Order K430-2
Internal Contactor Kit
Provides cold electrode until gun
trigger is pressed and cold inch
switch for loading wire. For K428
LN-25 model only. (Standard on
K449 LN-25 model.)
Order K443-2
Gas Flow Timer Kit
For use with Gas Solenoid Kit.
Provides adjustable delays for pre-
flow and postflow of shielding gas.
Order K434-1
22-30 lb. eadi- eel Adapter
Adapts 22-30 lb. (10-14kg) Lincoln
Readi-Reels® of electrode to 2"
(51mm) spindle. Wire not included.
Order K363P
14 lb. Innershield Coil Adapter
Permits 14 lb. (6 kg) Innershield®
electrode coils to be mounted on
2" (51mm) O.D. spindles. Wire not
included.
Order K435
8” O.D. Spool Adapter
For small spools. Permits 8"
(203mm) O.D. spools to be mounted
on 2" (51mm) O.D. spindles.
Order K468

LN-25 Wire Feeder K428
LN-25 Wire Feeder w/Internal Contactor and Gas Solenoid K449
equired Options
Magnum Gas-Shielded Gun and Cable Assemblies See publication E12.10
Magnum Self-Shielded Gun and Cable Assemblies See publication E12.110
Drive Roll and Guide Tube Kits See page 6
Weld Power Cables See page 6
Twist-Mate Cable Plug:
– for 1/0-2/0 cable K852-70
– for 2/0-3/0 cable K852-95
Cable Lug S1119-14
ecommended General Options
Jumper Plug Kit K484
Terminal Strip Remote Voltage Control Kit K444
6-Pin Remote Voltage Control Kit K444-1
14-Pin Remote Voltage Control Kit K444-2
42 Volt Remote Output Control Module K624-1
Wire Feeder Control Cable K1819-10
Wire Feeder Control Cable Extension:
25 ft.(7.6m), 50 ft.(15.2m) K1797-25, -50
Gas Solenoid Kit (standard on K449) K430-2
Internal Contactor Kit (standard on K449) K443-2
Gas Flow Timer Kit (K428 Requires K430-2) K434-1
22-30 lb. Readi-Reel Adapter K363P
14 lb. Innershield Coil Adapter K435
8” O.D. Spool Adapter K468
TOTAL:
CUSTOMER ASSISTANCE POLICY
The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed
their expectations. On occasion, purchasers may ask Lincoln Electric for advice or information about their use of our products. We respond to our customers based on the best information in our possession at that
time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or advice. We expressly disclaim any warranty of any kind, including any warranty
of fitness for any customer s particular purpose, with respect to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or correcting any such informa-
tion or advice once it has been given, nor does the provision of information or advice create, expand or alter any warranty with respect to the sale of our products.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the customer. Many variables
beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.
THE LINCOLN ELECT IC COMPANY
22801 St. Clair Ave., Cleveland, OH 44117-1199 • 216.481.8100 • www.lincolnelectric.com
LN-25 ORDER FORM
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