Saf-Fro PRESTO 275 User manual

IM3137
02/2022
REV01
PRESTO 275
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-260 Bielawa, Poland

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:
…………………………………………………………………... ……………………….…………………………………………..
INDEX
Technical Specifications...................................................................................................................................................... 1
ECO design information ...................................................................................................................................................... 2
Electromagnetic Compatibility (EMC).................................................................................................................................. 4
Safety.................................................................................................................................................................................. 5
Introduction ......................................................................................................................................................................... 7
Installation and Operator Instructions.................................................................................................................................. 7
WEEE ............................................................................................................................................................................... 18
Spare Parts ....................................................................................................................................................................... 18
REACh .............................................................................................................................................................................. 18
Authorized Service Shops Location .................................................................................................................................. 18
Electrical Schematic.......................................................................................................................................................... 18
Accessories....................................................................................................................................................................... 19

English 1 English
Technical Specifications
NAME INDEX
PRESTO 275 W100000001
INPUT
Input Voltage U1EMC Class
PRESTO 275
400V +/- 15% 3 phases A
I1eff I
1max
9.8A 15,3A
PRESTO 275
Input Power at Rated Cycle Input Amperes I1max PF (400V)
7,1 kVA (@100%) 10,1A 0,79
9,1 kVA (@60%) 12,9A 0,85
11 kVA (@25%) 15,3A 0,89
RATED OUTPUT
Duty Cycle 40°C
(based on a 10 min. period) Output Current I2
GTAW
100% 200A
60% 230A
40% 270A
SMAW
100% 180A
60% 230A
25% 270A
OUTPUT RANGE
Welding Current Range Peak Open Circuit Voltage U0
GTAW 5 - 270A 70V
SMAW 5 - 270A
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse Type gR or Circuit Breaker Type Z Power Lead
PRESTO 275 16A, 400V AC 4 Conductors, 1,5mm2
DIMENSIONS AND WEIGHT
Weight Height Width Length
PRESTO 275 14,1Kg 360 mm 230 mm 498 mm
Protection Rating Maximum Gas Pressure
PRESTO 275
IP23 0,5 MPa (5 bar)
Operating Temperature Storage Temperature
from -10°C to +40°C from -25°C to +55°C

English 2 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
W100000001 PRESTO 275 85% / 19W No equivalent model
Idle state occurs under the condition specified in below table
IDLE STATE
Condition Presence
MIG mode
TIG mode X
STICK mode
After 30 minutes of non-working X
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 3 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 4 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:
64,8mΩfor the PRESTO 275
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 5 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 6 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.
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 7 English
Introduction
PRESTO 275 is a SMAW and GTAW power source
The complete package contains:
Power source
USB with operator’s manual.
Recommended equipment, which can be bought by user,
was mentioned in the "Accessories" chapter.
Installation and Operator Instructions
Read this entire section before installation or operating the
machine.
Exploitation conditions
This machine can operate in harsh environments.
However, it is important to use the following simple
preventive measures that will ensure its long life and
reliable operation:
Do not place or operate this machine on a surface with
an incline higher 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. 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 PRESTO 275 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 8 English
Controls and Operational Features
Front panel PRESTO 275
Figure 1
1. Output negative socket for the welding circuit
2. Output positive socket for the welding circuit: Socket
where TIG torch must be connected
3. Remote Control Connector Plug For connecting a
Remote Control Kit
4. User Interface: See „User Interface” section.
5. USB connector
Back panel PRESTO 275
Figure 2
1. Power switch
User Interface
Figure 3
1. Display: 5” TFT display shows welding processes
parameters.
2. Left button: Home & Back
3. Central Knob: Parameter access and validation by
pushing knob
4. Right Button: Access to specific parameter of the
current selected page.
Main Menu
Figure 4
In Main Menu, 3 selections are possible
GTAW: allow to enter in TIG Home Menu
SMAW: allow to enter in MMA Home Menu
Information: Entering in this section allow to the user
to configure various parameters of the power source.
2
5
3
1
4
1
1
2
4
3

English 9 English
Home Menu description
Figure 5
1. In “Primary Settings” area, the type of process and
corresponding information will be indicated like type
of arc striking for TIG and type of MMA mode (Soft,
Crisp etc …)
If “Guided Setup Mode” is selected, all inputs will be
displayed in the section.
2. “Status Bar” give additional information like Trigger
Interlock selection, remote control status.
3. “Preset Current” indicates the current value
configured by welder and, during welding, welding
current value.
4. “Voltage”: Indication of voltage welding voltage.
5. “Secondary Settings” allow to user to see the current
values of weld sequence parameters.
6. “Contextual Buttons / Encoders Labels”, informs the
user of features associated to the knob and buttons
Welding GTAW process
To select, TIG mode process, select the GTAW icon and
push the knob button. Only Touch start.
Home menu
Figure 6
1. “Main Menu” access, push this button to go back.
2. Push button to configure all parameters of current
process. Turn the knob to adjust the welding current
value.
3. “Memories” access. See “Memories” chapter.
Configure Parameters
Weld sequence
Figure 7
Select “Weld Sequence” menu to configure the following
parameters:
Start current
Ramp-up time
Welding current
Figure 8
For each parameters, use the knob to reach
corresponding part of the weld sequence and push knob
button to set value
Primary settings
Status Bar
Preset current Voltage
Secondary settings
Contextual Buttons / Encoders Labels
1 2 3

English 10 English
Remote control
Figure 9
In GTAW mode, 2 accessories can be selected:
Hand remote control
Pedal Remote control.
See “Accessories” chapter for more details.
Welding SMAW process
Figure 10
To select, stick mode process, select the SMAW icon and
push the knob button.
Home menu
Figure 11
1. “Main Menu” access, push this button to go back to
“Main Menu”.
2. Push button to configure all parameter of current
process.
Turn the knob to adjust the welding current value.
3. “Memories” access. See dedicated section.
4. “Secondary settings” User can see directly on “Home
page” the current parameter values.
Configure Parameters
Stick modes
Figure 12
To change the Stick modes, select the corresponding
menu and push the Knob button.
3
2
1
4

English 11 English
Figure 13
The machine allow the user the use 4 stick mode:
Soft: For a welding with a low spatter presence. Hot
Start and Arc Force are pre-defined and can not be
modified
Crisp: For an aggressive welding, with an increased
Arc stability
Manual: user has full control of Arc Force and Hot start
parameters.
Pulse: user can define the frequency, duty, and
welding current.
Hot Start
This is a temporary increase in the initial welding current.
This helps ignite the arc quickly and reliably.
Figure 14
Select the “Hot Start”, push the knob button, change the
value and push again to validate.
Unit is in percentage. In this example the Initial current will
be equal the welding current with 40% of welding current
added.
Example: if welding current is 100A, the Hot Start current
will be 40%
Arc Force
This is a temporary increase in the output current during
normal stick welding. This temporary increase in output
current is used to clear intermittent connections between
the electrode and the weld puddle that occur during
normal stick welding.
Figure 15
Anti-Sticking
This feature cannot be modified by user.
This is a function that decreases the output current of the
machine to a low level when the operator makes an error
and sticks the electrode to the work piece. This decrease
in current allows the operator to remove the electrode
from the electrode holder without creating large sparks
that can damage the electrode holder.
Remote Control
Figure 16
In SMAW mode, 2 accessories can be selected:
Hand remote control
Pedal Remote control.
See “Accessories” chapter for more details

English 12 English
Accessories
Accessories can be accessed in GTAW and SMAW by
pushing knob button and selecting “Remote Control” icon
and push knob again.
Figure 17
When activated, a new icon appears on the right of
“Remote Control” icon named “Remote range”.
Figure 18
Hand Remote
Usable for GTAW and SMAW process.
The current displayed correspond to the position of the
remote control potentiometer from minimum to maximum
current.
Minimum and maximum can be defined in the “Remote
Range”. In above example, the minimum current is 25A
and the maximum is 250A.
Foot Pedal
Usable in GTAW only.
When selected, the maximum current is the one set on
“Home” page by the knob. The minimum current is, like
“Hand Remote”, the one set on Remote Range section.
As much the pedal is pushed, as much the current will
increase.
When Remote Control is activated, an icon is displayed
on Home page
Figure 19

English 13 English
Memories
Welding process and all parameters which belongs to
cycle can be saved in a memory slot in order to be
recalled after.
“Memories” menu is accessible for both process TIG and
Stick process from “Home menu”.
Figure 20
Push the right button to access to memories menu.
Figure 21
1. On the top of memory page, the current settings
which are going to be saved are displayed.
2. With the knob it is possible to scroll up or down to
select an empty or used slot memory. If the slot is
already used, the parameters associated to the
backup are displayed.
Push the knob button to recall the process and
corresponding parameters stored in the selected slot.
3. In order to save the current setting in memory, push
the right button and keep it hold until the end of
saving.
Figure 22
If button is released before the end of saving process, slot
will not be erased.
Guided Setup
Guide Setup is a feature for SMAW which configures
automatically the power source according to a set of input
data:
Type of metal sheet.
Type of electrode.
Electrode diameter;
Based on this data, the power source will be automatically
configured to get the most suitable parameter for the
configuration.
Guide Setup activation
Guided Setup can be activated in “System Option” then
“Weld Mode Setup”.
In “Manual Mode”, assistance is deactivated. A push on
knob button will allow to activate it
Guide Setup use
When Guided mode is activated, Home page will be
adjusted by:
Adding list of all inputs data in “Primary Settings”
section.
Preset a defined current value.
Modifying current range ribbon
Primary settings:
To change and configure input parameters press the knob
button and navigate to parameter desired. Then push
knob button to validate.
Once parameters are modified, the output welding current
will be automatically adjust to fit with the application.
1
2
3

English 14 English
Current range ribbon
The machine automatically configures the best current
value. It is also possible to adjust the current around this
value. As soon as the current remains in proper welding
current range for the application,
If the current exceed the proposer welding range, the
ribbon turned into red indicating to the user the current
selectin is not the best one.
System Options
To configure Power Source parameters, select “System
Option” icon.
USB Key Backup all settings & memories
Export from power source to memories previously saved.
USB Key Load Only Memories
Import from USB key to power source memories
previously saved.
USB Key Enable Data Monitoring on USB key
Activation of Data Monitoring is possible only when USB
key is plugged.
A .csv file is created on USB where average voltage,
average current, arc time and process selected.
Data monitoring remains active even if USB key is unplug
and data will be store after plugging again USB key.
Weld Mode Setup
See “Guided Setup” section.
Memories Management
Saved memories can be deleted in this section.
Voltage Reduction Device
When activated, output voltage no load voltage will be
reduced to 11V.
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English 15 English
In SMAW page, icon will appears on top right
screen.
Customer Support
In this menu, the user will find all accessories, spares
parts and component liked to 275S.
Advanced Settings System Information.
The software revision are displayed in this section.
Factory Reset allows to reset the power source
parameters.
Calibration.
WARNING
Calibration must be done by authorized technician with
proper equipment: power load, multimeters
This section allows to calibration current and voltage of
power source.
Software upgrade.
Software will be released during the life time of power
source and bring new features.
In order to upgrade software, insert USB key formatted in
FAT32 with new software package at the root of USB key.
A second window will ask you to accept the installation of
new software. Push “Confirm” button to start installation
workflow.
Transport and Lifting
WARNING
Falling equipment can cause injury and
damage to unit.
During transportation and lifting with a crane, adhere to
the following rules:
The device contains elements adapted for transport.
For lifting a suitable lifting equipment capacity.
WARNING
In any way the power source cannot be lifted
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
be lost.
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
least once a 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 removed case, machine has to be turned off and
the power lead has 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 16 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.saf-fro.com for any updated information.
Error Codes and troubleshooting
When the error occurs and remains, the Error messages
is displayed in Red.
By pushing the knob button, the Error code number is
displayed.
During error, new welding sequence is blocked until the
reason of error remains.
When the error vanished, it is now possible to
acknowledge the error by pushing the knob. The
background error message becomes white
Table 1 shows list of basic errors that can appear. To get
full list of error codes, please contact local service.
Type of
error
Error
code
“Done”, starting a
new sequence is
possible

English 17 English
Table 1 Error codes
Error code Symptoms Cause Recommended Course of Action
36
The machine has shut
down because it has
overheated.
System detected a temperature
level beyond the normal system
operating limit.
Be sure process does not exceed duty
cycle limit of the machine.
Check the setup for proper air flow around
and through the system.
Check that the system has been properly
maintained, including removal of
accumulated dust and dirt from the intake
and outlet louvers.
User interface show information when
machine will be cooled down. To continue
welding operation Please press left knob
or start welding operation by the torch
trigger
37
The machine has shut
down because it has
overheated.
System detected a temperature
level beyond the normal system
operating limit.
Be sure process does not exceed duty
cycle limit of the machine.
Check the setup for proper air flow around
and through the system.
Check that the system has been properly
maintained, including removal of
accumulated dust and dirt from the intake
and outlet louvers.
266 Torch is too warm. No liquid flows in water torch
Check the cooling liquid level, and fill
liquid if the level is too low.
Check proper connection of cooling
circuit
WARNING
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

English 18 English
WEEE
07/06
Do not dispose of electrical equipment together with normal waste!
In observance of European Directive 2012/19/EC 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!
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 that
contains a picture-descriptive part number 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:
Bisphénol 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 Authorization” 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 Sales Representative for assistance in locating the nearest Authorized Service Facility.
Electrical Schematic
Refer to the "Spare Part" manual supplied with the machine.