Lincoln Electric BESTER 210MP User manual

IM3148
11/2020
REV01
BESTER 210MP
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
Jana III Sobieskiego 19A, 58-260 Bielawa, Poland
ww.lincolnelectric.eu

English I English
12/05
THANKS! For having chosen the QUALITY of Lincoln Electric products.
Please Examine Package and Equipment for Damage. Claims for material damaged in shipment must be notified
immediately to the dealer.
For future reference record in the table below your equipment identification information. 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 ............................................................................................................................................................................... 16
Spare Parts ....................................................................................................................................................................... 16
REACh .............................................................................................................................................................................. 16
Authorized Service Shops Location .................................................................................................................................. 16
Electrical Schematic.......................................................................................................................................................... 16
Accessories....................................................................................................................................................................... 17

English 1 English
Technical Specifications
NAME INDEX
BESTER 210MP B18261-1
INPUT - SINGLE PHASE ONLY
Standard Voltage/Phase/
Frequency and Fuse type
Generator required
(recommended) Maximum Input Current Input Effective Current
230+/-15% / ~1/50/60Hz
D 16A - cycles > 60%
D 25A - cycles < 60%
>10kVA 41A 16A
RATED OUTPUT – DC ONLY
Welding process Duty Cycle(1) Amperes Volts at Rated Amperes
MIG
10% 200A** 24.0V
60% 115A 19.8V
100% 90A 18.5V
FCAW-SS
10% 200A** 24.0V
60% 115A 19.8V
100% 90A 18.5V
MMA
15% 180A** 27.2V
60% 95A 23.8V
100% 75A 23.0V
TIG
25% 180A** 17.2V
60% 120A 14.8V
100% 90A 13.6V
The duty cycle above is about 40℃
OUTPUT RANGE
Welding process Open Circuit Voltage (peak) Welding Current Range Welding Voltage Range
MIG U090V 30A ÷ 200A 15.5V ÷ 24.0V
FCAW-SS U090V 30A ÷ 200A 15.5V ÷ 24.0V
MMA U090V 15A ÷ 180A 20.6V ÷ 27.2V
TIG U090V 15A ÷ 180A 10.6V ÷ 17.2V
OTHER PARAMETERS
Power Factor Efficiency and idle power
consumption Protection Class Insulation Class
0,64 82,2% / 25W IP21 F
PHYSICAL DIMENSIONS
Length Width Height Weight (Net)
765mm 375mm 686mm 29kg
WIRE FEED SPEED RANGE / WIRE DIAMETER
WFS Range Drive Rolls Drive roll diameter
2 ÷ 16 m/min 2 Ø37
Solid Wires Aluminum Wires Cored Wires
0.6 ÷ 1.0 mm 1.0 ÷ 1.2 mm 0.9 ÷ 1.1 mm
TEMPERATURE RANGE
Operating Temperature Range Storage Temperature Range
-10°C ~ +40°C -25°C ~ +55°C
(1) Based upon 10 minute time period (i.e., for 30% duty cycle, it is 3 minutes on and 7 minutes off)
Note: The above parameters are subject to change with the improvement of machine
** To weld with I2 > 160A output current and achieve <60% duty cycles, use a power plug > 16A and use a D 25 fuse

English 2 English
Practical data on fuse value, current and welding time for coated electrode - MMA process
Fuse Type Electrode diameter
(mm) Welding current (A) Number of welded electrodes
Welding time in
seconds
D16
(16A- slow-blow) 2,0 60-70 10 Continuous work
D16
(16A- slow-blow) 2,5 85-90 10 Continuous work
D16
(16A- slow-blow) 3,2 120-125 6 450
D16
(16A- slow-blow) 4,0 130-145 Half of electrode 55
D20
(20A - slow-blow) 4,0 135-150 3 320
D25
(25A - slow-blow) 4,0 160 8 Continuous work
D25
(25A - slow-blow) 4,0 180 3 200
See example:
L
N
P
E
D 16A
D 20/25A
230V+/-10%
50/60Hz
Figure 1

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
B18261-1 BESTER 210MP 82,2% / 25W 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
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 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 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 with, if necessary, assistance from
Lincoln Electric.
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 kept as short as possible and should be positioned together. 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
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.
WARNING
This equipment does not comply with IEC 61000-3-12. If it is connected to a public low-voltage system, it is responsibility of
the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the
equipment may be connected.

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.
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.

English 7 English
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.
CYLINDER can be fasten on the machine’s shelf, but the height of gas cylinder doesn’t have to be higher
than 1,1m. The gas cylinder which is fastened on the machine’s shelf has to be secured by attaching it to
the machine using the chain.
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 BESTER 210MP enables
welding:
MIG
FCAW-SS
MMA
TIG
Lift-TIG
The following equipment has been added to
BESTER 210MP:
Work lead – 3m.
Cable with electrode holder-3m.
MIG welding gun – 4m.
Driving roll V0.8/V1,0 for solid wire (mounted in the
wire feeder).
Gas hose 2m.
User manual.
For MIG and FCAW-SS process, the technical
specification describes:
Type of welding wire
Wire diameter
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 standard 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 IP21. Keep it
dry when possible and do not place it on wet ground
or in puddles.
Do not use in rain or snow.
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.
The machine is protected from overheating by a
temperature sensor.

English 9 English
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 BESTER 210MP, must be
connected to a correctly installed plug-in socket with an
earth pin.
Input voltage is 230V, 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 [8], [9] and [10] of the Figure 2.
Power Source Placement and
connections
WARNING
Avoid excessive dust, acid and corrosive materials in the
air.
Keep protected from rain and direct sun when in use
outdoors.
There should be 500 mm space about for the welding
machine to have good ventilation.
Use adequate ventilation when in confined areas.
Controls and Operational Features
Front Panel
1 2 3 45 6
7
8
9
10
11
12
Figure 2
1. Amp/WFS display
2. Voltage/Arc Force display
3. Power indicator / Warning indicator
4. Wire inching Button
5. 2T/4T selection
6. Welding process selection: MIG (FCAW-SS) / TIG /
MMA
7. Inductance control knob
8. Output terminal (Positive)
9. Output terminal (Negative)
10. Euro gun connector
11. Voltage/arc force control knob
12. Amp/WFS control knob
Note:
The ‘protection indicator light’ will come on if the duty
cycle is exceeded. It shows that the inner
temperature is over the permitted level, the machine
should be stopped being used to allow it cool down.
Welding can continue after the ‘protection indicator
light’ is off.
The power source should be switched off when not in
use.
Welders should wear protective clothing and welding
helmet to prevent injury from arc and thermal
radiation.
Care should be taken so as not to expose others to
the welding arc. Use of screening is recommended.
Do not weld near Inflammable or explosive materials.

English 10 English
7. Knob Control: In MIG, this knob controls [7]:
MIG
process
Inductance: Arc control is
controlled by this knob. If the value
is higher, the arc will be softer and
during welding is less spatters.
11. Voltage/Arc Force control: Depending on welding
process, this knob controls [11]:
MIG
process VThe welding load voltage and set
by this knob (also during welding).
MMA
process
ARC FORCE: The output current
is temporarily increased to clear
short circuit connections between
the electrode and the workpiece.
12. Wire Feed Speed / Current Knob Control: Depending
on welding process, this knob controls [12]:
MIG
process
Wire feed speed WFS: Value in
percentage of nominal value wire
feed speed (m/min).
MMA
process AThe welding current is set by this knob (also during welding).
Rear Panel
Figure 3
1. Gas connector
2. Input power cord
3. Power switch
WARNING
When the machine is switched again on, last welding
process will be recalled.
WARNING
If the push-button is pushed in MIG process in, the output
terminals will lived.
WARNING
During MMA process, the output terminals are still lived.
The installation and connection
Figure 4
If the welding polarity has to be changed, user should:
Switch off the machine.
Determine the polarity for the electrode to be used
(or wire). Consult the data for this information.
Select and set the correct polarity: positive (terminal
8) or negative (terminal 9)
WARNING
Before welding check the polarity for using electrodes and
wires.
WARNING
The machine must be used with the door completely
closed during welding.
WARNING
Not use handle to move the machine during work.
Loading the Electrode Wire
Turn the machine off.
Open the side cover of the machine.
Unscrew the locking nut of the sleeve.
Load the spool with the wire on the sleeve such that
the spool turns anticlockwise when the wire is fed
into the wire feeder.
Make sure that the spool locating pin goes into the
fitting hole on the spool.
Screw in the fastening cap of the sleeve.
Put on the wire roll using the correct groove
corresponding to the wire diameter.
Free the end of the wire and cut off the bent end
making sure it has no burr.
The device is adapted to the spool max. 15 kg
300 mm
WARNING
Sharp end of the wire can hurt.
Rotate the wire spool anticlockwise and thread the
end of the wire into the wire feeder as far as the Euro
socket.
Adjust force of pressure roll of the wire feeder
properly.

English 11 English
Adjustments of Brake Torque of Sleeve
To avoid spontaneous unrolling of the welding wire the
sleeve is fitted with a brake.
Adjustment is carried by rotation of its Allen screw M8,
which is placed inside of the sleeve frame after
unscrewing the fastening cap of the sleeve.
Figure 5
1. Fastening cap.
2. Adjusting Allen screw M8.
3. Pressing spring.
Turning the Allen screw M8 anticlockwise increases the
spring tension and you can increase the brake torque
Turning the Allen screw M8 clockwise decreases the
spring tension and you can decrease the brake torque.
After finishing of adjustment, you should screw in the
fastening cap again.
Adjusting of Force of Pressure Roll
Force
The pressure arm controls the amount of force the drive
rolls exert on the wire.
Pressure force is adjusted by turning the adjustment nut
clockwise to increase force, counterclockwise to
decrease force. Proper adjustment of pressure arm
gives the best welding performance.
WARNING
If the roll pressure is too low the roll will slide on the wire.
If the roll pressure is set too high the wire may be
deformed, which will cause feeding problems in the
welding gun. The pressure force should be set properly.
Decrease the pressure force slowly until the wire just
begins to slide on the drive roll and then increase the
force slightly by turning of the adjustment nut by one turn.
Inserting Electrode Wire into Welding
Torch
Turn the welding machine off.
Depending on welding process, connect the proper
gun to the euro socket, the rated parameters of the
gun and of the welding machine should be matched.
Remote the nozzle from the gun and contact tip or
protection cap and contact tip. Next, straighten the
gun out flat.
Turn the welding machine on.
Depress the gun trigger to feed the wire through the
gun liner until the wire comes out of the threaded
end.
When trigger is released spool of wire should not
unwind.
Adjust wire spool brake accordingly.
Turn the welding machine off.
Install a proper contact tip.
Depending on the welding process and the type of
the gun, install the nozzle (MIG process) or
protection cap (FCAW-SS process).
WARNING
Take precaution to keep eyes and hands away from the
end of the gun while the wire is being come out of the
threated end.
Changing Driving Rolls
WARNING
Turn the input power off of the welding power source
before installation or changing drive rolls.
BESTER 210MP is equipped with drive roll V0.8/V1.0 for
steel wire. For others wire sizes, is available the proper
drive rolls kit (see "Accessories" chapter) and follow
instructions:
Turn the input power OFF.
Release the pressure roll lever [1].
Unscrew the fastening cap [2].
Change the drive roll [3] with the compatible ones
corresponding to the used wire.
WARNING
Be sure that the gun liner and contact tip are also sized
to match the selected wire size.
Screw fastening cap [2].
Manually feed the wire from the wire reel, the wire
through the guide tubes, over the roller and guide
tube of Euro Socket into liner of gun.
Lock the pressure roll lever [1].
Figure 6

English 12 English
Gas Connection
A gas cylinder must be installed with a proper flow
regulator. Once a gas cylinder with a flow regulator has
been securely installed, connect the gas hose from the
regulator to the machine gas inlet connector. Refer to
point [1] of the Figure 3.
WARNING
The welding machine supports all suitable shielding gases
including carbon dioxide, argon and helium at a maximum
pressure of 5,0 bars.
Note: When using the TIG lift process, connect the gas
hose from the TIG torch to the gas regulator on the
shield gas cylinder.
Welding MIG, FCAW-SS Process
BESTER 210MP can be used to welding MIG and
FCAW-SS process.
Preparation the Machine for Welding
MIG and FCAW-SS Process.
Procedure of begin welding of MIG or FCAW-SS
process:
Determine the wire polarity for the wire to be used.
Consult the wire data for this information.
Connect output the gas-cooled gun to MIG / FCAW-
SS process to Euro Socket [10] Figure 2.
Depending on the using wire, connect the work lead
to output socket [8] or [9] Figure 2.
Connect the work lead to the welding piece with the
work clamp.
Install the proper wire.
Install the proper drive roll.
Make a sure, if it is needed (MIG process), that the
gas shield has been connected.
Turn the machine on.
Push the gun trigger to feed the wire through the gun
liner until the wire comes out of the threaded end.
Install a proper contact tip.
Depending on the welding process and the type of
the gun, install the nozzle (MIG process) or
protection cap (FCAW-SS process).
Close the left side panel.
Set welding mode to MIG [6] Figure 2
The welding machine is now ready to weld.
By applying the principle of occupational health and
safety at welding, welding can be begun.
Welding MIG, FCAW-SS Process in
Manual Mode
In BESTER 210MP can be set:
The welding load voltage
WFS
Inductance
The 2-Step - 4-Step changes the function of the gun’s
trigger.
2 Step trigger operation turns welding on and off in
direct response to the trigger. Welding process is
performed when the gun’s trigger is pulled.
4-Step mode allows to continue welding, when the
gun’s trigger is released. To stop welding, the gun’s
trigger is pulled again. 4-step mode facilitates to
making long welds.
WARNING
4-Step does not work during Spot Welding.
Welding MMA Process
BESTER 210MP does not include the electrode holder
with lead necessary for MMA welding, but the one can
be purchased separately.
Procedure of begin welding of MMA process:
First turn the machine off.
Determine the electrode polarity for the electrode to
be used. Consult the electrode data for this
information.
Depending on the polarity of using electrode,
connect the work lead and the electrode holder with
lead to output socket [8] or [9] (Figure 2) and lock
them. See the Table 1.
Table 1.
Output socket
POLARITY
DC (+)
The electrode holder
with lead to MMA [8]
Work lead [9]
DC (-)
The electrode holder
with lead to MMA [9]
Work lead [8]
Connect the work lead to the welding piece with the
work clamp.
Install the proper electrode in the electrode holder.
Turn the welding machine on.
Set welding mode to MMA [6] Figure 2.
Set the welding parameters.
The welding machine is now ready to weld.
By applying the principle of occupational health and
safety at welding, welding can be begun.
User can set functions:
The welding current
Arc dynamics ARC FORCE

English 13 English
Welding TIG Process
BESTER 210MP can be used to TIG process with DC(-).
Arc ignition can be achieved only by lift TIG method
(contact ignition and lift ignition).
BESTER 210MP does not include the torch to TIG
welding, but the one can be purchased separately. See
"Accessories" chapter.
Procedure of begin welding of TIG process:
First turn the machine off.
Connect TIG torch to [9] output socket.
Connect the work lead to [8] output socket.
Connect the work lead to the welding piece with the
work clamp.
Install the proper tungsten electrode in the TIG torch.
Turn the machine on.
Set up welding mode to TIG [6] Figure 2
Set the welding parameters. The welding machine is
now ready to weld.
By applying the principle of occupational health and
safety at welding, welding can be begun.
Transport and lifting
WARNING
Falling equipment can cause injury and
damage to unit.
Do not use handle to lift or support unit, see figure 7.
Figure 7
Maintenance
WARNING
For any repair operations, modifications or maintenances,
it is recommended to contact the nearest Technical
Service Center or Lincoln Electric. Repairs and
modifications performed by unauthorized service or
personnel will cause, that the manufacturer’s warranty will
become null and void.
Any noticeable damage should be reported immediately
and repaired.
Routine maintenance (everyday)
Check condition of insulation and connections of the
work leads and insulation of power lead. If any
insulation damage exists replace the lead
immediately.
Remove the spatters from the welding gun nozzle.
Spatters could interfere with the shielding gas flow to
the arc.
Check the welding gun condition: replace it, if
necessary.
Check condition and operation of the cooling fan.
Keep clean its airflow slots.
Periodic maintenance (every 200 working hours but
at list once every year)
Perform the routine maintenance and, in addition:
Keep the machine clean. Using a dry (and low
pressure) airflow, remove the dust from the external
case and from the cabinet inside.
If it is required, clean and tighten all weld terminals.
The frequency of the maintenance operations may vary
in accordance with the working environment where the
machine is placed.
WARNING
Do not touch electrically live parts.
WARNING
Before the case of welding machine will be removed, the
welding machine had to be turned off and the power lead
had to be disconnected from mains socket.
WARNING
Mains supply network must be disconnected from the
machine before each maintenance and service. After
each repair, perform proper tests to ensure safety.

English 14 English
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 information 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.

English 15 English
Troubleshooting
Table 2
No. Problem Possible Cause What to do
1 Yellow Thermal
Indicator is on
Input voltage is too high (≥15%)
Switch off power source; Check the main
supply. Restart welder when power recovers
to normal state.
Input voltage is too low (≤15%)
Insufficient ventilation. Improve the ventilation.
Ambient temperature is too high. It will automatically recover when the
temperature reduces.
Exceeding the rated duty-cycle. It will automatically recover when the
temperature reduces.
2 Wire feeding motor
not working
Potentiometer faulty Change potentiometer
Nozzle is blocked. Change nozzle
Drive roll is loose. Increase tension on drive roll
3
Cooling Fan not
working or turning
very slowly
Switch broken Replace the switch
Fan broken Replace or repair the fan
Wire broken or disconnected Check the connection
4 Arc is not stable
and spatter is large
Too large contact tip makes the current
unsteady
Change to proper contact tip and / or drive
roll.
Too thin power cable makes the power
unstable. Change the power cable.
Too low input voltage Correct the input voltage.
Wire feeding resistance is too large Clean or replace the liner and keep the gun
cable straight.
5 Arc will not start
Work cable broken Connect / repair work cable
Work piece has greasy, dirty, rusty or
painted
Clean work piece, ensure good electrical
contact between work clamp and job.
6 No shielding gas
Torch is not connected properly. Re-connect the torch.
Gas pipe is crimped or blocked. Check gas system.
Gas hose broken. Repair or replace
7 Others Please contact our Field Service Shop.
Table 3 Error Codes
No. Error Description
1 F01/E01 Device overheating
2 F02/E02 Supply voltage too low
3 F05/E05 Grip trigger activated before turning on the power
4 F09/E09 Short-circuit output terminals / Incorrect output voltage

English 16 English
WEEE
07/06
Spare Parts
12/05
Part list reading instructions
Do not use this part list for a machine if its code number is not listed. Contact the Lincoln Electric Service Department
for any code number not listed.
Use the illustration of assembly page and the table below to determine where the part is located for your particular
code machine.
Use only the parts marked "X" in the column under the heading number called for in the assembly page (# indicate a
change in this printing).
First, read the Part List reading instructions above then refer to the "Spare Part" manual supplied with the machine, which
contains a picture-descriptive part number cross-reference).
cross-reference).
REACh
11/19
Communication in accordance with Article 33.1 of Regulation (EC) No 1907/2006 – REACh.
Some parts inside this product contain:
Bisphenol A, BPA, EC 201-245-8, CAS 80-05-7
Cadmium, EC 231-152-8, CAS 7440-43-9
Lead, EC 231-100-4, CAS 7439-92-1
Phenol, 4-nonyl-, branched, EC 284-325-5, CAS 84852-15-3
in more than 0,1% w/w in homogeneous material. These substances are included in the “Candidate List of Substances
of Very High Concern for Authorisation” of REACh.
Your particular product may contain one or more of the listed substances.
Instructions for safe use:
use according to Manufacturer instructions, wash hands after use;
keep out of reach of children, do not put in mouth,
dispose in accordance with local regulations.
Authorized Service Shops Location
09/16
The purchaser must contact a Lincoln Authorized Service Facility (LASF) about any defect claimed under Lincoln's
warranty period.
Contact your local Lincoln Sales Representative for assistance in locating a LASF or go to www.lincolnelectric.com/en-
gb/Support/Locator.
Electrical Schematic
Refer to the "Spare Part" manual supplied with the machine.
English
Do not dispose of electrical equipment together with normal waste!
In observance of European Directive 2012/19/UE on Waste Electrical and Electronic Equipment (WEEE)
and its implementation in accordance with national law, electrical equipment that has reached the end of
its life must be collected separately and returned to an environmentally compatible recycling facility. As
the owner of the equipment, you should get information on approved collection systems from our local
representative.
By applying this European Directive you will protect the environment and human health!

English 17 English
Accessories
W10429-15-3M LGS2 150 MIG gun, gas cooled - 3m
W10429-15-4M LGS2 150 MIG gun, gas cooled - 4m
W000010786 Gas nozzle conical Ø12mm.
W000010820 Contact Tip M6x25mm ECu 0.6mm
W000010821 Contact Tip M6x25mm ECu 0.8mm
WP10440-09 Contact Tip M6x25mm ECu 0.9mm
W000010822 Contact Tip M6x25mm ECu 1.0mm
WP10468 Protection cap to FCAW-SS process
R-1019-125-1/08R Adapter for spool S200 (200mm)
K10158-1 Adapter for spool type B300
K10158 Adapter for spool type S300
W10529-17-4V TIG torch WTT2 17- 4m with valve
E/H-200A-25-3M Welding cable with electrode holder - 3m
W000260684
KIT (set of welding cables) for MMA process:
Electrode holder with lead to MMA process - 3m
Work lead with clamp - 3m
ROLL KIT FOR SOLID WIRES
KP14016-0.8 Drive roll V0.6 / V0.8
KP14016-1.0 Drive roll V0.8 / V1.0 (Installed in standard)
ROLL KIT FOR CORED WIRES
KP14016-1.1R Drive roll U1.0 / U1.2
ROLL KIT FOR ALUMINIUM WIRES
KP14016-1.2A Drive roll VK1.0 / VK1.1