Lincoln Electric POWERTEC i253C STANDARD User manual

IM3149
08/2020
REV00
POWERTEC®i253C & i323C STANDARD
POWERTEC®i253C & i323C ADVANCED
POWERTEC®i383C & i453C ADVANCED
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-263 Bielawa, Poland
www.lincolnelectric.eu

English I English
12/05
THANK YOU! For choosing the QUALITY of the Lincoln Electric products.
Please check packaging and equipment for damage. Claims for material damaged in shipment must be notified
immediately to the dealer.
For ease of use, please enter your product identification data in the table below. Model Name, Code & Serial Number
can be found on the machine rating plate.
Model Name:
………………...…………………………….…………………………………………………………………………………………..
Code & Serial number:
………………….……………………………………………….. …………………………………………………….……………..
Date & Where Purchased:
…………………………………………………………………... ……………………….…………………………………………..
ENGLISH INDEX
Technical Specifications...................................................................................................................................................... 1
ECO design information ...................................................................................................................................................... 5
Electromagnetic Compatibility (EMC).................................................................................................................................. 6
Safety.................................................................................................................................................................................. 7
Introduction ......................................................................................................................................................................... 9
Installation and Operator Instructions.................................................................................................................................. 9
WEEE ............................................................................................................................................................................... 47
Spare Parts ....................................................................................................................................................................... 47
REACh .............................................................................................................................................................................. 47
Authorized Service Shops Location .................................................................................................................................. 47
Electrical Schematic.......................................................................................................................................................... 47
Accessories....................................................................................................................................................................... 48

English 1 English
Technical Specifications
NAME INDEX
POWERTEC®i253C STANDARD K14284-1
POWERTEC®i253C ADVANCED K14285-1
POWERTEC®i323C STANDARD K14286-1
POWERTEC®i323C ADVANCED K14287-1
POWERTEC®i383C ADVANCED K14288-1
POWERTEC®i453C ADVANCED K14289-1
INPUT
Input Voltage U1EMC Class Frequency
i253C STANDARD
400V ± 15%, 3-phase A 50/60Hz
i253C ADVANCED
i323C STANDARD
i323C ADVANCED
i383C ADVANCED
i453C ADVANCED
Input Power at Rated
Cycle Input Amperes I1max PF
i253C STANDARD 10,3 kVA @ 60% Duty Cycle
(40°C) 14,7A 0,85
i253C ADVANCED
i323C STANDARD 13,6 kVA @ 40% Duty Cycle
(40°C) 19,6A 0,90
i323C ADVANCED
i383C ADVANCED 17,1 kVA @ 40% Duty Cycle
(40°C) 26 A 0,92
i453C ADVANCED 20,7 kVA @ 80% Duty Cycle
(40°C) 30 A 0,92
RATED OUTPUT
i253C STANDARD
i253C ADVANCED
Open Circuit
Voltage
Duty Cycle 40°C
(based on a 10
min. period)
Output Current Output Voltage
GMAW
49Vdc
60% 250A 26,5Vdc
100% 195A 23,8Vdc
FCAW 60% 250A 26,5Vdc
100% 195A 23,8Vdc
SMAW 60% 250A 30Vdc
100% 195A 27,8Vdc
i323C STANDARD
i323C ADVANCED
GMAW
49Vdc
40% 320A 30Vdc
60% 250A 26,5Vdc
100% 195A 23,8Vdc
FCAW
40% 320A 30Vdc
60% 250A 26,5Vdc
100% 195A 23,8Vdc
SMAW
40% 320A 32,8Vdc
60% 250A 30Vdc
100% 195A 27,8Vdc

English 3 English
i383C ADVANCED
GMAW
54Vdc (peak)
48Vdc (RMS)
40% 380A 33,0Vdc
60% 320A 30,0Vdc
100% 240A 26,0Vdc
FCAW
40% 380A 33.0Vdc
60% 320A 30,0Vdc
100% 240A 26,0Vdc
SMAW
40% 380A 35,2Vdc
60% 320A 32,8Vdc
100% 240A 29,6Vdc
i453C ADVANCED
GMAW
60Vdc (peak)
49Vdc (RMS)
80% 450A 36,5Vdc
100% 420A 35,0Vdc
FCAW 80% 450A 36,5Vdc
100% 420A 35,0Vdc
SMAW 80% 450A 38,0Vdc
100% 420A 36,8Vdc
WELDING CURRENT RANGE
GMAW FCAW SMAW
i253C STANDARD 10A÷250A 10A÷250A 10A÷250A
i253C ADVANCED 10A÷250A 10A÷250A 10A÷250A
i323C STANDARD 10A÷320A 10A÷320A 10A÷320A
i323C ADVANCED 10A÷320A 10A÷320A 10A÷320A
i383C ADVANCED 20A÷380A 20A÷380A 10A÷380A
i453C ADVANCED 20A÷450A 20A÷450A 10A÷450A
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse Type gR or Circuit Breaker Type Z Power Lead
i253C STANDARD 16A, 400V AC 4 Conductor, 2,5mm2
i253C ADVANCED 16A, 400V AC 4 Conductor, 2,5mm2
i323C STANDARD 20A, 400V AC 4 Conductor, 2,5mm2
i323C ADVANCED 20A, 400V AC 4 Conductor, 2,5mm2
i383C ADVANCED 25A, 400V AC 4 Conductor, 2,5mm2
i453C ADVANCED 32A, 400V AC 4 Conductor, 4,0mm2
DIMENSION
Weight Height Width Length
i253C STANDARD 69 kg
878,3 mm 560 mm 934,7 mm
i253C ADVANCED 70 kg
i323C STANDARD 69 kg
i323C ADVANCED 70 kg
i383C ADVANCED 70 kg
i453C ADVANCED 82 kg

English 4 English
WIRE FEED SPEED RANGE / WIRE DIAMETER
WFS Range Drive Rolls Drive roll diameter
i253C STANDARD
1.5 ÷ 20,32m/min 4 Ø37
i253C ADVANCED
i323C STANDARD
i323C ADVANCED
i383C ADVANCED
i453C ADVANCED
Solid Wires Aluminum Wires Cored Wires
i253C STANDARD
0.8 ÷ 1.2 mm 1.0 ÷ 1.2 mm 0.9 ÷ 1.2 mm
i253C ADVANCED
i323C STANDARD
i323C ADVANCED
i383C ADVANCED 0.8 ÷ 1.4 mm 1.0 ÷ 1.2 mm 0.9 ÷ 1.4 mm
i453C ADVANCED 0.8 ÷ 1.6mm 1.0 ÷ 1.6 mm 0.9 ÷ 1.6 mm
Protection Rating Maximum Gas Pressure Operating Humidity (t=20°C)
i253C STANDARD
IP23 0,5MPa (5 bar) ≤90 %
i253C ADVANCED
i323C STANDARD
i323C ADVANCED
i383C ADVANCED
i453C ADVANCED
Operating Temperature Storage Temperature
i253C STANDARD
from -10°C to +40°C from -25°C to 55°C
i253C ADVANCED
i323C STANDARD
i323C ADVANCED
i383C ADVANCED
i453C ADVANCED

English 5 English
ECO design information
The equipment has been designed in order to be compliant with the Directive 2009/125/EC and the Regulation
2019/1784/EU.
Efficiency and idle power consumption:
Index Name Efficiency when max power
consumption / Idle power consumption Equivalent model
K14284-1 POWERTEC®i253C
STANDARD 87,2% / 27W No equivalent model
K14285-1 POWERTEC®i253C
ADVANCED 87,2% / 27W No equivalent model
K14286-1 POWERTEC®i323C
STANDARD 87,2% / 27W No equivalent model
K14287-1 POWERTEC®i323C
ADVANCED 87,2% / 27W No equivalent model
K14288-1 POWERTEC®i383C
ADVANCED 86,2% / 29W No equivalent model
K14289-1 POWERTEC®i453C
ADVANCED 88,3% / 29W No equivalent model
Idle state occurs under the condition specified in below table
IDLE STATE
Condition Presence
MIG mode X
TIG mode
STICK mode
After 30 minutes of non-working
Fan off X
The value of efficiency and consumption in idle state have been measured by method and conditions defined in the
product standard EN 60974-1:20XX.
Manufacturer’s name, product name, code number, product number, serial number and date of production can be read
from rating plate.
XXXXXXXXXX
Code: XXXXX XXXXXX-X
S/N: P1YYMMXXXXX
12
34
5
P1 YY MM XXXXX
5A5A 5B 5D5C
XXXXXXX
Where:
1- Manufacturer name and address
2- Product name
3- Code number
4- Product number
5- Serial number
5A- country of production
5B- year of production
5C- month of production
5D- progressive number different for each machine

English 5 English
Typical gas usage for MIG/MAG equipment:
Material type
Wire
diameter
[mm]
DC electrode positive Wire Feeding
[m/min] Shielding Gas Gas flow [l/min]
Current
[A]
Voltage
[V]
Carbon, low
alloy steel 0,9 ÷ 1,1 95 ÷ 200 18 ÷ 22 3,5 – 6,5 Ar 75%, CO225% 12
Aluminium 0,8 ÷ 1,6 90 ÷ 240 18 ÷ 26 5,5 – 9,5 Argon 14 ÷ 19
Austenic
stainless steel 0,8 ÷ 1,6 85 ÷ 300 21 ÷ 28 3 - 7 Ar 98%, O22% / He 90%, Ar 7,5% CO22,5% 14 ÷ 16
Copper alloy 0,9 ÷ 1,6 175 ÷ 385 23 ÷ 26 6 - 11 Argon 12 ÷ 16
Magnesium 1,6 ÷ 2,4 70 ÷ 335 16 ÷ 26 4 - 15 Argon 24 ÷ 28
Tig Process:
In TIG welding process, gas usage depends on cross-sectional area of the nozzle. For comonnly used torches:
Helium: 14-24 l/min
Argon: 7-16 l/min
Notice: Excessive flow rates causes turbulence in the gas stream which may aspirate atmospheric contamination into
the welding pool.
Notice: A cross wind or draft moving can disrupt the shielding gas coverage, in the interest of saving of protective gas
use screen to block air flow.
End of life
At end of life of product, it has to be disposal for recycling in accordance with Directive 2012/19/EU (WEEE), information
about the dismantling of product and Critical Raw Material (CRM) present in the product, can be found at
https://www.lincolnelectric.com/en-gb/support/Pages/operator-manuals-eu.aspx

English 6 English
Electromagnetic Compatibility (EMC)
01/11
This machine has been designed in accordance with all relevant directives and standards. However, it may still generate
electromagnetic disturbances that can affect other systems like telecommunications (telephone, radio, and television) or
other safety systems. These disturbances can cause safety problems in the affected systems. Read and understand this
section to eliminate or reduce the amount of electromagnetic disturbance generated by this machine.
This machine has been designed to operate in an industrial area. To operate in a domestic area it is necessary
to observe particular precautions to eliminate possible electromagnetic disturbances. The operator must install
and operate this equipment as described in this manual. If any electromagnetic disturbances are detected the
operator must put in place corrective actions to eliminate these disturbances, if necessary with assistance from
Lincoln Electric.
WARNING
Provided that the public low voltage system impedance at the point of common coupling is lower than:
56,4 mΩfor the POWERTEC®I253C STANDARD
56,4 mΩfor the POWERTEC®I253C ADVANCED
56,4 mΩfor the POWERTEC®I323C STANDARD
56,4 mΩfor the POWERTEC®I323C ADVANCED
56,4 mΩfor the POWERTEC®i383C ADVANCED
23 mΩfor the POWERTEC®i453C ADVANCED
This equipment is compliant with IEC 61000-3-11 and IEC 61000-3-12 and can be connected to public low voltage systems.
It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network
operator if necessary, that the system impedance complies with the impedance restrictions.
Before installing the machine, the operator must check the work area for any devices that may malfunction because of
electromagnetic disturbances. Consider the following.
Input and output cables, control cables, and telephone cables that are in or adjacent to the work area and the machine.
Radio and/or television transmitters and receivers. Computers or computer controlled equipment.
Safety and control equipment for industrial processes. Equipment for calibration and measurement.
Personal medical devices like pacemakers and hearing aids.
Check the electromagnetic immunity for equipment operating in or near the work area. The operator must be sure that
all equipment in the area is compatible. This may require additional protection measures.
The dimensions of the work area to consider will depend on the construction of the area and other activities that are
taking place.
Consider the following guidelines to reduce electromagnetic emissions from the machine.
Connect the machine to the input supply according to this manual. If disturbances occur if may be necessary to take
additional precautions such as filtering the input supply.
The output cables should be as short as possible and positioned together as close as possible to each other. If possible
connect the work piece to ground in order to reduce the electromagnetic emissions. The operator must check that
connecting the work piece to ground does not cause problems or unsafe operating conditions for personnel and
equipment.
Shielding of cables in the work area can reduce electromagnetic emissions. This may be necessary for special
applications.
WARNING
EMC classification of this product is class A in accordance with electromagnetic compatibility standard EN 60974-10 which
means that the product is designed to be used in an industrial environment only.
WARNING
The Class A equipment is not intended for use in residential locations where the electrical power is provided by the public
low-voltage supply system. There may be potential difficulties in ensuring electromagnetic compatibility in those locations,
due to conducted as well as radiated disturbances.

English 7 English
Safety
01/11
WARNING
This equipment have to be used by qualified personnel. Be sure that all installation, operation, maintenance and repair
procedures are performed only by qualified person. Read and understand this manual before operating this equipment.
Failure to follow the instructions in this manual could cause serious personal injury, loss of life, or equipment damage. Read
and understand the following explanations of the warning symbols. Lincoln Electric is not responsible for damages caused
by improper installation, improper care or abnormal operation.
WARNING: This symbol indicates that instructions must be followed to avoid serious personal injury, loss
of life, or equipment damage. Protect yourself and others from possible serious injury or death.
READ AND UNDERSTAND INSTRUCTIONS: Read and understand this manual before operating this
equipment. Arc welding can be hazardous. Failure to follow the instructions in this manual could cause
serious personal injury, loss of life, or equipment damage.
ELECTRIC SHOCK CAN KILL: Welding equipment generates high voltages. Do not touch the electrode,
work clamp, or connected work pieces when this equipment is turned on. Insulate yourself from the
electrode, work clamp, and connected work pieces.
ELECTRICALLY POWERED EQUIPMENT: Turn off the input power using the disconnect switch at the
fuse box before working on this equipment. Ground this equipment in accordance with local electrical
regulations.
ELECTRICALLY POWERED EQUIPMENT: Regularly inspect the input, electrode, and work clamp
cables. If any insulation damage exists replace the cable immediately. Do not place the electrode holder
directly on the welding table or any other surface in contact with the work clamp to avoid the risk of
accidental arc ignition.
ELECTROMAGNETIC FIELD MAY BE DANGEROUS: Electric current flowing through any conductor
creates electromagnetic field (EMF). EMF fields may interfere with some pacemakers, and welders having
a pacemaker shall consult their physician before operating this equipment.
CE COMPLIANCE: This equipment complies with the European Community Directives.
ARTIFICIAL OPTICAL RADIATION: According with the requirements in 2006/25/EC Directive and
EN 12198 Standard, the equipment is a category 2. It makes mandatory the adoption of Personal
Protective Equipment (PPE) having filter with a protection degree up to a maximum of 15, as required by
EN169 Standard.
FUMES AND GASES CAN BE DANGEROUS: Welding may produce fumes and gases hazardous to
health. Avoid breathing these fumes and gases. To avoid these dangers the operator must use enough
ventilation or exhaust to keep fumes and gases away from the breathing zone.
ARC RAYS CAN BURN: Use a shield with the proper filter and cover plates to protect your eyes from
sparks and the rays of the arc when welding or observing. To protect the skin, use suitable clothing made
of durable, fireproof material. Protect other nearby personnel with suitable, non-flammable screening and
warn them not to watch the arc nor expose themselves to the arc.

English 8 English
WELDING SPARKS CAN CAUSE FIRE OR EXPLOSION: Remove fire hazards from the welding area
and have a fire extinguisher easily accessible. Welding sparks and hot materials from the welding process
can easily go through small cracks and openings to adjacent areas. Do not weld on any tanks, drums,
containers, or material until the proper steps have been taken to insure that no flammable or toxic vapors
will be present. Never use this equipment when flammable gases, vapors or flammable liquids are
present.
WELDED MATERIALS CAN BURN: Welding generates a large amount of heat. Hot surfaces and
materials in work area can cause serious burns. Use gloves and pliers when touching or moving
materials in the work area.
CYLINDER MAY EXPLODE IF DAMAGED: Use only certificate, compressed gas cylinders containing
the correct shielding gas for the process used and properly operating regulators designed for the gas and
pressure used. Always keep cylinders in an upright position securely chained to a fixed support. Do not
move or transport gas cylinders with the protection cap removed. Do not allow the electrode, electrode
holder, work clamp or any other electrically live part to touch a gas cylinder. Gas cylinders must be
located away from areas where they may be subjected to physical damage or the welding process
including sparks and heat sources.
MOVING PARTS ARE DANGEROUS: There are moving mechanical parts in this machine, which can
cause serious injury. Keep your hands, body and clothing away from those parts during machine starting,
operating and servicing.
HOT COOLANT CAN BURN SKIN: Always be sure coolant is NOT HOT before servicing the cooler.
SAFETY MARK: This equipment is suitable for supplying power for welding operations carried out in an
environment with increased risk of electric shock.
The manufacturer reserves the right to make changes and/or improvements in design without upgrade at the same time the
operator’s manual.

English 9 English
Introduction
General Description
The welding machines
POWERTEC®i253C STANDARD
POWERTEC®i253C ADVANCED
POWERTEC®i323C STANDARD
POWERTEC®i323C ADVANCED
POWERTEC®i383C ADVANCED
POWERTEC®i453C ADVANCED
enables welding:
GMAW (MIG/MAG),
FCAW (Flux-Cored),
SMAW (MMA),
The complete package contains:
Work lead – 3m,
Gas hose – 2m,
Driving roll V1.0/V1.2 for solid wire (mounted in the
wire feeder).
Recommended equipment, which can be bought by user,
was mentioned in the chapter "Accessories".
Installation and Operator Instructions
Read this entire section before installation or operation
of the machine.
Location and Environment
This machine will operate in harsh environments.
However, it is important that simple preventative
measures are followed to assure long life and reliable
operation.
Do not place or operate this machine on a surface with
an incline greater than 15° from horizontal.
Do not use this machine for pipe thawing.
This machine must be located where there is free
circulation of clean air without restrictions for air
movement to and from the air vents. Do not cover the
machine with paper, cloth or rags when switched on.
Dirt and dust that can be drawn into the machine
should be kept to a minimum.
This machine has a protection rating of IP23. Keep it
dry when possible and do not place it on wet ground
or in puddles.
Locate the machine away from radio controlled
machinery. Normal operation may adversely affect
the operation of nearby radio controlled machinery,
which may result in injury or equipment damage.
Read the section on electromagnetic compatibility in
this manual.
Do not operate in areas with an ambient temperature
greater than 40°C.
Duty cycle and Overheating
The duty cycle of a welding machine is the percentage of
time in a 10 minute cycle at which the welder can
operate the machine at rated welding current.
Example: 60% duty cycle
Welding for 6 minutes. Break for 4 minutes.
Excessive extension of the duty cycle will cause the
thermal protection circuit to activate.
Minutes or decrease
Duty Cycle
Input Supply Connection
WARNING
Only a qualified electrician can connect the welding
machine to the supply network. Installation had to be
made in accordance with the appropriate National
Electrical Code and local regulations.
Check the input voltage, phase and frequency supplied to
this machine before turning it on. Verify the connection of
ground wires from the machine to the input source. The
welding machine POWERTEC®i253C STANDARD /
ADVANCED, POWERTEC®i323C STANDARD /
ADVANCED, POWERTEC®i383C ADVANCED,
POWERTEC®i453C ADVANCED must be connected to
a correctly installed plug-in socket with an earth pin.
Input voltage is 400 Vac 50/60Hz. For more information
about input supply refer to the technical specification
section of this manual and to the rating plate of the
machine.
Make sure that the amount of mains power available from
the input supply is adequate for normal operation of the
machine. The necessary delayed fuse or circuit breaker
and cable sizes are indicated in the technical specification
section of this manual.
WARNING
The welding machine can be supplied from a power
generator of output power at least 30% larger than input
power of the welding machine.
WARNING
When powering the machine from a generator be sure to
turn off welder first, before generator is shut down, in
order to prevent damage to welder!

English 10 English
Output Connections
Refer to points [2], [3] and [4] of the Figures below.
Controls and Operational Features
Front panel POWERTEC®i253C&i323C
Standard Version
3
1
6
24
5
Figure 1
Front panel POWERTEC®i253C&i323C
Advanced Version
4
1
2
3
7
5
Figure 2
Front panel POWERTEC®i383C&i453C
Advanced Version
8
9
10
1
2
3
4
5
7
Figure 3
1. Power Switch ON/OFF (I/O): Controls the input
power to the machine. Be sure the power source is
connected to the mains supply before turning power
on ("I"). After input power is connected and the
power switch is turned on, the indicator will light up.
2. Negative Output Socket for the Welding
Circuit: For connecting an electrode holder
with lead / work lead depending on the require
configuration.
3. Positive Output Socket for the Welding
Circuit: For connecting an electrode holder
with lead / work lead depending on the
require configuration.
4. EURO Socket: For connecting a welding gun (for
GMAW / FCAW process).
5. Remote Control Connector Plug: To install Remote
Control Kit. This connector allows connection
Remote Control. See "Accessories" chapter.
6. U0 User Interface: See “User Interfaces” Chapter.
7. U7 User Interface: See User Interfaces chapter
8. Display Cover. Display protection for U7.
9. Quick Connect Coupling: Coolant outlet
(supplies cool coolant to the torch/gun).
10. Quick Connect Coupling: Coolant inlet
(takes warm coolant from torch/gun).

English 11 English
Rear Panel POWERTEC®i253C&i323C
11
12
17
16
15
14
18
19
13
Figure 4
Rear Panel POWERTEC®i383C&i453C
11
12 14
15
16
17
18
19
20
21
22
Figure 5
11. Wire Liner Entry: Enables installing liner for welding
wire delivered in drum package.
12. Top Chain: To protect gas bottle.
13. Bottom chain: For properly securing the gas cylinder
14. Supply Plug: For gas heater kit (see “Accessories”
chapter).
15. Power Lead (5m): Connect the supply plug to the
existing input cable that is rated for the machine as
indicated in this manual, and conforms to all
applicable standards. This connection shall be
performed by a qualified person only.
16. Gas Connector: Connection for gas line.
17. Gas Flow Regulator Plug: Gas flow regulator can be
purchased separately (see “Accessories” chapter).
18. Gas hose
19. Work Lead
20. Cover bracket: To install COOL ARC® 26 power
supply and control cable (see "Accessories
Suggested" chapter).
21. Quick Connect Coupling: Coolant inlet
(supplies cool coolant to the torch/gun).
22. Quick Connect Coupling: Coolant outlet
(takes warm coolant from torch/gun).
Internal Controls
23
24
25
26 27
28
29
Figure 6
23. Spooled Wire (for GMAW / FCAW): Not supplied as
standard.
24. Wire Spool Holder: Maximum 16kg spools. Holder
allows mounting plastic, steel and fiber spools onto
51 mm spindle.
Note: Plastic Brake Nut has a Left-hand thread.
25. Switch: wire feed / gas purge: This switch allows wire
feeding (wire test) and gas flow (gas test) without
switching on the output voltage..
26. Wire drive: 4-rolls wire drive.
27. Terminal Block of Changing Polarity Plug (for GMAW
/ FCAW-SS process): This terminal block enables to
set the welding polarity (+ ; -), which will be given at
the welding gun
28. USB Receptacle Type A: For USB memory stick
connection. For machine software update and
service purpose, video playing.
29. Fuse F1: Use the low blow fuse:
POWERTEC®
i253C
POWERTEC®
i323C
POWERTEC®
i383C
POWERTEC®
i453C
1A / 400V
(6,3x32mm)
1A / 400V
(6,3x32mm)
2A / 400V
(6,3x32mm)
2A / 400V
(6,3x32mm)

English 12 English
Standard User Interface (U0)
30
30
31 32
3334
35
36
37
38 39
40 41
Figure 7
30. Display:
Left display: Shows wire feed speed or welding
current. During welding shows the actual welding
current value.
Right display: Shows the welding voltage in volts
units. During welding shows the actual welding
voltage value.
31. Left Control: Adjusts values on the Left display.
32. Right Control: Adjusts values on the Right display.
33. Right Button: Enables scrolling, changing and setting
welding parameters.
34. Left Button: Enables changing the welding process.
35. Thermal Overload Indicator: It indicates that the
machine is overloaded or that the cooling is not
sufficient.
36. Status LED: A two color light that indicates system
errors. Normal operation is steady green light. Error
conditions are indicated, per Table 1.
WARNING
The status light will flash green, and sometimes red and
green, for up to one minute when the machine is first
turned on. When the power source is powered it can take
as long as 60 seconds for the machine to be ready to
weld. This is a normal situation as the machine goes
through initialization.
Table 1 LED Light Conditions
LED Light
Condition
Meaning
Only machines which using CAN
protocol for communication
Steady Green
Correct operation mode. The power
source communicates normally with
all peripheral equipment.
Blinking Green
Occurs during a system reset, and
indicates that the power source is
mapping (identifying) additional
connected components in the system.
This condition occurs for 1-10
seconds after connecting the power
supply or when the system
configuration is changed during
operation.
Alternating
Green and Red
If the status lights are flashing any
combination of red and green color, it
means that an error is present in the
machine.
Each digit of the code represents the
number of red flashes of the indicator
light. Individual code digits are flashed
in red with a long pause between
digits. If more than one code is
present, the codes will be separated
by green light. Read the error code
before you turn of the machine.
To clear the error, turn off the
machine, wait a few seconds, and
then turn on the machine again. If the
error remains, a maintenance is
required. Please contact the nearest
authorized service center or Lincoln
Electric and report the error code.
Steady Red Indicate no communication in CAN
protocol.
37. LED Indicator: Informs that the left display shows the
wire feed speed.
38. LED Indicator: Informs that the left display shows the
ampere units.
39. LED Indicator: Informs that the right display shows
the volts units.
40. Welding Programs Indicators: LED light indicate the
active manual weld mode. See Table 2.
41. Welding Parameters Indicators: LED light indicate
the active weld parameters. See Table 3.

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Welding process change
It is possible to quick recall of one of the six manual
welding programs - Table 2.
Table 2 Manual Weld Modes:
Symbol LED Process
GMAW
GMAW MIX
GMAW CO2
GMAW AR
FCAW
FCAW MIX
FCAW CO2
SMAW
SMAW
To set the welding process:
Press the left button [34], to select the right weld mode
– LED of the current program flashes.
Again press the left button, the active weld mode
indicator will skip to the next program.
WARNING
During switching the displays show a “dotted line” on the
screen.
Quick Access and Configuration Menu
for U0 User Interface
Users have access to the two menu levels:
Quick Access – basic menu related with welding
parameters settings
Configuration Menu – advanced menu associated with
machine configuration and selected welding
parameters.
WARNING
Access to the menu is not available under welding, or if
there is a fault (status LED is not solid green).
Availability of the parameters in the Quick Access and
Configuration Menu depend on the selected welding
program / welding process.
After the device has been restarted the user settings are
restored.
Parameter Selection Mode – the parameter name on the
left display [30] blinking.
Parameter Change Value Mode – the parameter value on
the right display [30] blinking.
Basic level
To enter the menu (Table 3):
Press the right button [33] to select mode.
Use the right knob [32] to set the value of parameter.
Press the left button [34], to return to main menu.
WARNING
System returns to the main menu automatically after 2
seconds of inactivity.

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Table 3 The default settings of basic menu
Parameter Definition
Inductance – controls the arc characteristics when
short-arc welding. Increasing Inductance higher
than 0.0 provides a crisper arc (more spatter) while
decreasing the inductance less than 0.0 provides a
softer arc (less spatter).
Regulation range: from -10.0 to +10.0.
Factory default, Pinch is OFF.
Torch trigger mode (2-step / 4-step) - changes
the function of the torch trigger.
2 Step trigger operation turns welding on and
off as direct response to the trigger. Welding
process starts when the torch trigger is press.
4-Step mode allows to continue welding, when
the torch trigger is released. To stop welding,
the torch trigger should be pressed again.4-step
model facilitates to making long welds.
Run-in WFS – sets the wire feed speed from the
time the torch trigger is pressed until an arc is
established.
Regulation range: from minimum to maximum
of the wire feed speed.
Factory default, Run-in WFS is turned off.
Burnback Time – amount of time that the welding
is continue after the wire stops feeding. It prevents
the wire from sticking in the puddle and prepares
the end of the wire for the next arc start.
Burnback Time is set automatically (0,07s)
Regulation range: from 0s (OFF) to 0,25s

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Advanced menu
To enter the menu (Table 4):
Press the right [33] and left button [34] simultaneously,
to access the menu.
Use the left knob [31], to choose the parameter.
Press the right button [33], to confirm.
Use the right knob [32] to choose the value of
parameter. At any time you can return to the list of
parameters using the left button [34].
Press the right button [33], to confirm.
Press the left button [34], to return to main menu.
WARNING
To exit from the menu with saved changes, press the left
[34] and right button [33] simultaneously.
System returns to the main menu automatically after one
minute of inactivity.
Table 4 The default settings of advanced menu
Parameter Definition
Spot Welding Settings – sets the total welding time in the
range of 0-120 seconds, even if the torch trigger is still
pressed.
This function does not work in 4-Step Trigger Mode.
Crater Procedure – turn ON/OFF the crater procedure:
"ON" = Crater can be adjusted. The crater parameter is
assigned to the right button on user interface. During
adjusting of crater, the LED indicator is on.
"OFF" (factory default) = The Crater Procedure adjustment
is OFF and ignored after pressing the right button on the
user interface.
Preflow Time – time that shielding gas flows after the torch
trigger was pressed before prior to wire feeding.
Factory default, Preflow Time is set at 0.2 seconds.
Regulation range: od 0.1 seconds do 25 seconds.
Postflow Time – time that shielding gas flows after the
welding sopped.
Factory default, Postflow Time is set at 0.5 seconds.
Regulation range: from 0.1 seconds to 25 seconds.
Arc/Loss Time – this option can be used to optionally shut off
output if an arc is not established, or is lost for a specified
amount of time. Error 269 will be displayed if the machine
times out.
If the value is set to OFF, machine output will not be turned off
if an arc is not established or will output be turned off if an arc
is lost.
When a value is set, the machine output will shut off and error
269 will be displayed if an arc is not established within the
specified amount of time after the trigger is pulled or if the
trigger remains pulled after an arc is lost.
To prevent errors, set the appropriate Arc/Loss Time values
taking into account all parameters (Run-in WFS, Wire Feed
Speed, Burnback Time etc.).
Regulation range: from OFF (0) to 10 seconds, (OFF is
factory default).
Note: This parameter is disabled while stick welding process.
Screen Brightness – enables setting the display brightness
level.
Factory default: 5.
Regulation range: from 1 to 10
Feedback Persist – determines how the welding current
value will be displayed after stopped welding.
"n0" (factory default) = last recorded feedback value will
blinked for 5 seconds after stopped welding, then return to
default values on display.
"Yes" - last recorded feedback value will blinked after
stopped welding until the trigger will pressed or the knob
will be used or arc ignition.

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Wire Feed Speed (WFS) unit – enables change of the
displayed WFS unit:
CE (factory default) - m/min;
US - in/min.
Hot Start - percentage regulation of growth nominal current
value during arc start. It cause temporary rise up of output
current which makes ignition of the electrode easier.
Factory default: 0.0
Regulation range: from -10.0 to +10.0.
This parameter is only for SMAW.
Arc Force - temporary increased of the output current to
prevent sticking of the electrode in order to facilitate welding
process.
Lower values will provided less short circuit current and a
softer arc. Higher settings will provided a higher short circuit
current, more forceful arc and possibly more spatter.
Factory default: 5.0
Regulation range: from 0.0 to +10.0
Restore to Factory Settings – it allows to restore the
factory settings.
View Software version – used for viewing the software
version on user interface.
First view shows the effect after getting access to the Soft
menu.
Second view shows the effect after getting access to
parameter edit.
Cooler – option is available when cooler is connected.
This function allows following cooler modes:
FILL – Filling.
AUTO – Automatic mode.
On – Cooler on in the continuous mode.
Off – Cooler off.
Refer cooler instruction manual for more details.

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Interface Marking Guide
Table 5 Symbols description
Select Welding Process
Select Welding
Program
Process SMAW (MMA)
Process GMAW
(MIG/MAG) Process FCAW
Recall from the User
Memory
Save to the User
Memory
User setup
Advanced Setup
Configuration
Arc Force Hot Start
Pinch
Preflow Time
Postflow Time
Burnback Time Run-in WFS
Select Function of Gun
Trigger (2-Step / 4-Step)
Limits
2-Step
Crater Procedure
Spot Welding Settings 4-Step Start Procedure
Cold Feed Brightness Level
Restore Factory Setting
Machine information
A/B Procedure USB Memory
Check Mark
Resignation Mark
Access control
Error
ESCape Button
Confirm Button
Wire Feed Speed
[in/min]
Welding Voltage
Welding Current
Locked Support
Wire Feed Speed
[m/min]
Set the Language
Advanced UI look
Display Configuration
Settings
Standard UI look
Enable/ Disable Jobs
Save
Select Item to lock
Enable/ Disable Jobs
Mode or Select Jobs for
Jobs Mode
Save
Lock
Weld History
Load
Service weld logs
SnapShot
Cooler
Service Menu
Green Mode
Settings
Standby
Shutdown Date / Time Sound Volume

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Video
Play
Pause
Stop Repeat off
Repeat on
Mute