Lincoln Electric QUICKMIG 250 User manual

IM3174
03/2022
REV03
QUICKMIG®250 & 300
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-260 Bielawa, Poland
www.lincolnelectric.eu

English I English
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...............................................................................................................................................................3
Electromagnetic Compatibility (EMC) ..........................................................................................................................................5
Safety ...........................................................................................................................................................................................6
Introduction...................................................................................................................................................................................8
Installation and Operator Instructions ..........................................................................................................................................8
WEEE.........................................................................................................................................................................................18
Spare Parts.................................................................................................................................................................................18
REACh .......................................................................................................................................................................................18
Authorized Service Shops Location...........................................................................................................................................18
Electrical Schematic...................................................................................................................................................................18
Accessories ................................................................................................................................................................................19

English 1 English
Technical Specifications
NAME INDEX
QUICKMIG®250 K14379-1
QUICKMIG®300 K14380-1
INPUT
Input Voltage U1EMC Class Frequency
QUICKMIG®250 400V ± 10%, 3-phase A 50/60Hz
QUICKMIG®300
Process
Input Power at Rated
Cycle (40°C) Input Amperes I1max PF
QUICKMIG®250
GMAW/FCAW 13,5 kVA @ 35% Duty
Cycle 19,2 A 0,58
SMAW 15,5 kVA @ 25% Duty
Cycle 21,9 A 0,56
QUICKMIG®300 GMAW/FCAW 15 kVA @ 35% Duty Cycle 22,0 A 0,65
SMAW 14 kVA @ 35% Duty Cycle 19,8 A 0,62
RATED OUTPUT
Process
Open Circuit
Voltage
Duty Cycle 40°C
(based on a 10 min.
period)
Output Current Output Voltage
QUICKMIG®250
GMAW
72Vdc
35% 250A 26,5Vdc
60% 230A 25,5Vdc
100% 175A 22,8Vdc
FCAW
35% 250A 26,5Vdc
60% 230A 25,5Vdc
100% 175A 22,8Vdc
SMAW
35% 250A 30Vdc
60% 190A 27,6Vdc
100% 150A 26Vdc
QUICKMIG®300
GMAW
72Vdc
35% 300A 29Vdc
60% 230A 25,5Vdc
100% 175A 22,8Vdc
FCAW
35% 300A 29Vdc
60% 230A 25,5Vdc
100% 175A 22,8Vdc
SMAW
35% 250A 30Vdc
60% 190A 27,6Vdc
100% 150A 26Vdc
WELDING CURRENT RANGE
GMAW FCAW SMAW
QUICKMIG®250 50A÷250A 50A÷250A 10A÷250A
QUICKMIG®300 50A÷300A 50A÷300A 10A÷250A
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse Type gR or Circuit Breaker Type D Power Lead
QUICKMIG®250 16A, 400V AC 4 Conductor, 2,5mm2
QUICKMIG®300 16A, 400V AC 4 Conductor, 2,5mm2

English 2 English
WELDING VOLTAGE REGULATION RANGE
GMAW FCAW
QUICKMIG®250 16,5 V ÷ 26,5 V 16,5 V ÷26,5 V
QUICKMIG®300 16,5 V ÷29 V 16,5 V ÷29 V
WIRE FEED SPEED RANGE / WIRE DIAMETER
WFS Range Drive Rolls Drive roll diameter
QUICKMIG®250 1.5 ÷ 18m/min 4 Ø30
QUICKMIG®300
Solid Wires Aluminum Wires Cored Wires
QUICKMIG®250 0.6 ÷ 1.2 mm 1.0 ÷ 1.2 mm 0.8 ÷ 1.0 mm
QUICKMIG®300
DIMENSION
Weight Height Width Length
QUICKMIG®250 49 kg 760 mm 395 mm 830 mm
QUICKMIG®300 50 kg
OTHERS
Protection Rating Maximum Gas Pressure Operating Humidity (t=20°C)
QUICKMIG®250 IP23 0,5MPa (5 bar) ≤90 %
QUICKMIG®300
Operating Temperature Storage Temperature
QUICKMIG®250 from -10°C to +40°C from -25°C to 55°C
QUICKMIG®300

English 3 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
K14379-1 QUICKMIG®250 86% / 23W No equivalent model
K14380-1 QUICKMIG®300 86% / 23W 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 4 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 commonly 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 5 English
Electromagnetic Compatibility (EMC)
11/04
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:
58 mΩfor the QUICKMIG®250
59,9 mΩfor the QUICKMIG®300
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 6 English
Safety
11/04
WARNING
This equipment must 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 damage to this equipment.
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 damage to this equipment. 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 damage to this equipment.
ELECTRIC SHOCK CAN KILL: Welding equipment generates high voltages. Do not touch the electrode,
work clamp, or connected work pieces when this equipment is on. Insulate yourself from the electrode, work
clamp and connected work pieces.
ELECTRICALLY POWERED EQUIPMENT: Turn off 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.
ELECTRIC AND MAGNETIC FIELDS MAY BE DANGEROUS: Electric current flowing through any
conductor creates electric and magnetic fields (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. Use suitable clothing made from durable
flame-resistant material to protect you skin and that of your helpers. Protect other nearby personnel with
suitable, non-flammable screening and warn them not to watch the arc nor expose themselves to the arc.

English 7 English
WELDING SPARKS CAN CAUSE FIRE OR EXPLOSION: Remove fire hazards from the welding area
and have a fire extinguisher readily available. 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 operate this equipment when flammable gases, vapors or liquid combustibles 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 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.
A GAS CYLINDER can be used with this machine. In this case, place the gas cylinder on the back of the
machine on the shelf intended for this and secure it by attaching it to the machine with chains. The height of
the cylinder cannot exceed 1.65m.
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.
SAFETY MARK: This equipment is suitable for supplying power for welding operations carried out in an
environment with increased hazard 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 8 English
Introduction
The welding machines QUICKMIG®250 and
QUICKMIG®300 can be used for welding in below
methods:
GMAW
FCAW
SMAW
The complete package contains:
Work lead with ground clamp – 3m,
Gas hose – 2m,
Drive roll V0.8/1.0 for solid wire (assembly 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 10° 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 QUICKMIG®250, QUICKMIG®300,
must be connected to a correctly installed plug-in socket
with an earth pin.
Input voltage is three-phase 400VAC, 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
with "D" characteristic) 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 welder from a generator be sure to turn off
welder first, before generator is shut down, in order to
prevent damage to welder!
Output Connections
Refer to points [1], [3] and [4] of the figures below.