ESAB LKB 320 4WD is a versatile welding power source designed for professional welding applications. With its ability to weld with solid steel, stainless steel, aluminum wire, and tubular wire with or without shielding gas, this machine offers great flexibility for various welding tasks. Equipped with a 4WD system, it ensures stable wire feeding even under challenging conditions. The LKB 320 4WD provides precise control over welding parameters, enabling users to achieve high-quality welds.
ESAB LKB 320 4WD is a versatile welding power source designed for professional welding applications. With its ability to weld with solid steel, stainless steel, aluminum wire, and tubular wire with or without shielding gas, this machine offers great flexibility for various welding tasks. Equipped with a 4WD system, it ensures stable wire feeding even under challenging conditions. The LKB 320 4WD provides precise control over welding parameters, enabling users to achieve high-quality welds.
LKB 265
LKB 320
Bruksanvisning
Brugsanvisning
Bruksanvisning
Käyttöohjeet
Instruction manual
Betriebsanweisung
Manuel d'instructions
Gebruiksaanwijzing
Instrucciones de uso
Istruzioni per l'uso
Manual de instruções
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0455 466 101 020404 Valid for serial no. 005-xxx-xxx
TOCgb
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1 DIRECTIVE 36
2SAFETY 36
3 INTRODUCTION 37
3.1 Technical data: LKB 265, LKB 265 4WD 37
3.2 Technical data: LKB 320, LKB 320 4WD 38
4 INSTALLATION 39
4.1 Mains supply 39
4.2 Assembly of components 40
4.3 Electrical installation 40
5 OPERATION 41
6 MAINTENANCE 41
7 ORDERING OF SPARE PARTS 42
DIAGRAM 107
SPARE PARTS LIST 111
ACCESSORIES 124
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1 DIRECTIVE
DECLARATION OF CONFORMITY
Esab Welding Equipment AB, 695 81 Laxå, Sweden, gives its unreserved guarantee that
welding power source LKB 265/320 from serial number 523/521 - 612/547 complies with
standard EN 60974-1, in accordance with the requirements of directive (73/23/EEA) and
addendum (93/68/EEA).
---------------------------------------------------------------------------------------------------------------
Laxå 2002-03-26
Henry Selenius
Managing Director
ESAB AB Arc Equipment
695 81 Laxå
Sweden Tel: +46 584 81 000 Fax: +46 584 411 924
2SAFETY
WARNING
ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS. TAKE PRECAUTIONS
WHEN WELDING. ASK FOR YOUR EMPLOYER'S SAFETY PRACTICES THAT SHOULD BE BASED ON
MANUFACTURERS' HAZARD DATA.
ELECTRIC SHOCK - Can kill
Install and earth the welding unit in accordance with applicable standards.
Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
Insulate yourself from earth and the workpiece.
Ensure your working óstance is safe.
FUMES AND GASES - Can be dangerous to health
Keep your head out of the fumes.
Use ventilation, extraction at the arc, or both, to take fumes and gases away from your breathing zone and
the general area.
ARC RAYS - Can injure eyes and burn skin.
Protect your eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
Protect bystanders with suitable screens or curtains.
FIRE HAZARD
Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE - Excessive noise can damage hearing
Protect your ears. Use earmuffs or other hearing protection.
Warn bystanders of the risk.
MALFUNCTION - Call for expert assistance in the event of malfunction.
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.
PROTECT YOURSELF AND OTHERS!
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3 INTRODUCTION
LKB 265, LKB 265 4WD, LKB 320 and LKB 320 4WD are step controlled power sources in
a compact design, intended for welding with solid steel, stainless steel or aluminium wire as
well as tubular wire with or without shielding gas.
The possibility of welding with homogeneous wire/shielding gas and welding with gasless
tubular wire is obtained by switching the + and - connections on the switching terminal above
the wire feed unit.
3.1 Technical data: LKB 265, LKB 265 4WD
Standard delivery:
Power source equipped with spot welding function and adjustable burnback time.
Integrated wire feed mechanism with feed roller for solid wire, diameter 0.8, and 1.0.
Welding torch PSF 250 4.5 m.
Return cable 4.5 m with return clamp.
Mains cable 3 m and gas hose.
Includes: Handle, (fitted with 2 screws,) gas cylinder shelf (fitted with 2 screws).
Voltage 400-415 V, 3 50/60 Hz 230/400-415/500V350Hz
230/440-460V, 360Hz
Permissible load at
100% duty cycle 150 A/22 V 150 A/22 V
60 % duty cycle 190 A/24 V 190 A/24 V
30 % duty cycle 265 A/27 V 265 A/27 V
Setting range (DC)
30A/15V-265A/27V 30A/15V-265A/27V
Open circuit voltage
15-38 V 15-38 V
Open circuit power
50 W 50 W
Efficiency
0.69 0.69
Power factor
0.97 0.97
Control voltage
42 V, 50/60 Hz 42 V, 50/60 Hz
Dimensions lxwxh
770x520x620 770x520x620
Weight
92 kg 92 kg
Enclosure class
IP 23 IP 23
Application classification
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3.2 Technical data: LKB 320, LKB 320 4WD
Standard delivery:
Power source equipped with switch for 2/4 step trigger action with gas pre-flow and gas post-
flow in the 4 step mode and adjustable burnback time.
Integrated wire feed mechanism with feed roller for solid wire, diameter 1.0, and 1.2.
Welding torch PSF 305 4.5 m.
Return cable 4.5 m with return clamps.
Mains cable 5 m and gas hose.
Includes: Handle, (fitted with 2 screws,) gas cylinder shelf (fitted with 2 screws).
Voltage 400-415 V, 3 50/60 Hz 230/400-415/500V350Hz
230/440-460V, 360Hz
Permissible load at
100% duty cycle 195 A/24 V 195 A/24 V
60 % duty cycle 250 A/27 V 250 A/27 V
30 % duty cycle 320 A/30 V 320 A/30 V
Setting range (DC)
40A/16(14)V-320A/30V 40A/16(14)V-320A/30V
Open circuit voltage
16-40 V 16-40 V
Open circuit power
52 W 52 W
Efficiency
0.71 0.71
Power factor
0.97 0.97
Control voltage
42 V, 50/60 Hz 42 V, 50/60 Hz
Dimensions lxwxh
770x520x620 770x520x620
Weight
112 kg 112 kg
Enclosure class
IP 23 IP 23
Application classification
Duty cycle
The duty cycle refers to the time as a percentage of a ten-minute period that you can weld at a certain load
without overloading the welding power source.
Enclosure class
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid objects or
water. Equipment marked IP 23 is designed for indoor and outdoor use.
Application class
The symbol
indicates that the power source is designed for use in areas with increased
electrical hazard.
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4INSTALLATION
The installation must be executed by a professional.
WARNING!
This product is intended for industrial use. In a domestic environment this product may cause radio
interference. It is the user's responsibility to take adequate precautions.
Connect the power supply lead using the appropriate fuse in conformance with local
regulations.
Cable areas acc. to Swedish regulations.
Make sure the welding rectifier is not covered or positioned so that cooling is obstructed.
4.1 Mains supply
LKB 265 350 Hz 350/60 Hz* 350 Hz 360 Hz 360 Hz
Voltage V
230 400/415 500 230 440-460
Current A 100%
13 7 5 13 7
60% 18 10 7 18 9
30% 27 16 13 27 16
Mains lead rating mm
4 x 2.5 4 x 1.5 4 x 1.5 4 x 2.5 4 x 1.5
Fuse slow A
20 16 16 20 16
*)LKB 265, LKB 265 4WD
LKB 320 350 Hz 350/60 Hz* 350 Hz 360 Hz 360 Hz
Voltage V
230 400/415 500 230 440-460
Current A 100%
16 9 7 16 8
60% 23 14 10 23 12
30% 35 20 16 34 18
Mains lead rating mm
4 x 4 4 x 2.5 4 x 2.5 4 x 4 4 x 2.5
Fuse slow A
20 16 16 20 16
*)LKB 320, LKB 320 4WD
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4.2 Assembly of components
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4.3 Electrical installation
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5 OPERATION
General safety regulations for the handling of the equipment can be found on
page 1. Read through before you start using the equipment!
The power sources can be equipped with instrument to display the current and voltage.
The instruments have a hold function and can be calibrated.
A thermal cut-out prevents overheating. Resetting takes place automatically when the power
source has cooled.
A - Space for digital meters (optional)
B - Voltage selector, 10-step
C - Voltage selector, 4-step
D - Main switch, on/off
E - Mains indicator lamp
F - Thermal overload warning lamp, lights up in case of overheating
G - Welding torch connection
H - Potentiometer (wire feed)
J - Inductance connection
K - Potentiometer (spot welding)
ba14s005
6 MAINTENANCE
Regularly maintenance is important for reliable and safe operations.
Only those persons who have appropriate electrical knowledge (authorised personnel) may
remove the safety plates to connect or carry out service, maintenance or repair work on
welding equipment.
Blow down the power source with dry, compressed air at a low pressure.
Cleaning and replacement of the wire feed mechanism's wear parts should take place
periodically to ensure trouble free wire feed.
Note that an excessive pressure setting can result in abnormal wear on the pressure
roller, feed roller and wire liner.
Blow clean the wire liner regularly and clean the gas nozzle.
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The brake hub
The hub is adjusted when delivered, if readjustment is required, follow the instructions below.
Adjust the brake hub so that wire is slightly slack when wire feed stops.
Adjusting the braking torque:
WARNING!
Rotating parts can cause injury, take great care.
7 ORDERING OF SPARE PARTS
LKB is designed and tested in accordance with the EN 60974-1 (IEC 60974-1)
international standard.
It is the obligation of the service unit which has carried out the service or repair work to
make sure that the product still conforms to the said standard.
Spare parts are ordered through your nearest ESAB representative, see back cover. When
ordering spare parts, please state machine type and number as well as designation and
spare part number as shown in the spare parts list.
This will simplify dispatch and ensure you get the right part.
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ESAB LKB 320 4WD is a versatile welding power source designed for professional welding applications. With its ability to weld with solid steel, stainless steel, aluminum wire, and tubular wire with or without shielding gas, this machine offers great flexibility for various welding tasks. Equipped with a 4WD system, it ensures stable wire feeding even under challenging conditions. The LKB 320 4WD provides precise control over welding parameters, enabling users to achieve high-quality welds.
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