ExpressWeld MasterMIG 500W User manual

Expressweld MasterMIG 500W
Model :
www. .com.traskaynak
Gas Metal Arc Welding Machine
Eczacıbaşı - Lincoln Electric recommend to use ASKAYNAK gas metal arc welding“”
wire for obtaining high performance from MasterMIG 500W.
USER GUIDE
Guarantee Period and Features
2 Years Guarantee (excl. torch and cables)GMAW (MIG/MAG)
Welding Method
CO2

Pazarlama ve Lojistik Müdürü / Marketing and Logistics Manager / Directeur de Marché et Logistiques
Kaynak Tekni i Sanayi ve Ticaret A. .ğŞ
TOSB Taysad Organize Sanayi Bölgesi, 2. Cadde, No: 5, ekerp nar 41480 Çay rova, Kocaeli - TURKEYŞı ı
Sertaç ÖZEN
18.06.2009Tarih / Date / Datum / Date :
AT - UYGUNLUK BEYANI
EU - DECLARATION of CONFORMITY
EU - KONFORMITÄTSERKLÄRUNG
Déclaration de Conformité de l'EU
KAYNAK TEKN SANAY ve T CARET A. .İĞİ İ İ Ş
Şirket / Firm / Firma / Société
a a da modeli belirtilen kaynak makinesininşğı
declares that the welding machine
erklärt, daß die Bauart der Maschine
déclare que le poste de soudage
®®
EXPRESSWELD MasterMIG 500W
a a da belirtilen yönergelere uygun oldu unuşğı ğ
conforms to the following directives
den folgenden Bestimmungen entspricht
est conformé aux directives suivantes
2004/108/EC, 2006/95/EC
ve yine a a da belirtilen normlara uygun olarak tasarland n beyan eder.ş ğı ığı ı
and has been designed in compliance with the following standards
und in Überienstimmung mit den nachstehenden normen hergestellt wurde
et qu'il a été conçu en conformité avec les normes
TS EN 60974-1:2007, TS EN 60974-10:2009

Expressweld MasterMIG 500W
IMPORTER
Kaynak Tekni i Sanayi ve Ticaret A. .ğŞ
TOSB Taysad Organize Sanayi Bölgesi, 2. Cadde, No: 5, ekerp nar 41480 Çay rova, KOCAELŞı ı İ
Phone: [phone] Fax: [phone]
www. .com.tr
askaynak
MANUFACTURER
Manufactured in People s Republic of China by KAYNAK'
TEKNİĞİ SANAYİ ve TİCARET A.Ş..
Dear Customer,
®®
Thank you for having choosen the gasExpressweld MasterMIG 500W
metal arc welding machine.
All connections, operations and maintenance-repair work of your product
should be performed by authorized personnel.
To get optimized efficiency from your welder, before starting your machine
please carefully read and understand the user guide and keep it as a
supplementary resource for future reference. Failing to follow the instructions
within the user guide may cause serious injury and damage on the machine.
Therefore, we recommend to carefully read the warnings stated in “General
Safety Rules" section. "Kaynak Tekniği Sanayi ve Ticaret A Ş." is not liable.
for any damages due to improper connection, storage conditions, operation
and maintenance-repair work.
Kaynak Tekni iğ
Sanayi ve Ticaret A. .Ş

"Expressweld"
"Expressweld" is the registered trademark of
Kaynak Tekniği Sanayi ve Ticaret A.Ş..
Expressweld MasterMIG 500W

"MasterMIG"
is the registered trademark of Kaynak
Tekniği Sanayi ve Ticaret A.Ş..
Expressweld MasterMIG 500W

1. General Safety Rules
Electromagnetic Compatibility
2. General Information, Warnings and Operation Conditions
3. Specifications
4. Technical Data
5. Front Panel Controls
6. Back Panel Controls
7. Controls in Wire Feeder Unit
8. Connection Diagram
9. Installation and Operation of Machine
9.1. Mains Supply
9.2. Shielding Gas Connection
9.3. Welding Torch Connection
9.4. Connection Between Power Unit and Wire Feeder Unit
9.5. Installing Welding Wire
10. Functions of Wire Feeder Unit
11. Environment Conditions
12. Receiving Welding Machine From Service
13. GMAW (MIG/MAG) Method
14. Productive Usage In Terms of Energy Consumption
15. Storage and Transportation
16. Maintenance and Repair
17. Unpacking
18. Troubleshooting Guide
19. Failures in Welding Seams
20. Spare Part List
21. Warning Label
22. Electrical Circuit Diagram
23. Wire Feeder and Power Unit Specifications
TECHNICAL SERVICES
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Table of Contents
Expressweld MasterMIG 500W
Physical life determined by Ministry of Industry and Trade is 10 years.
(This is the period for providing spare parts required for the machine to operate.)

Page 1
1 General Safety Rules
Be sure that this machine should only operated by qualified personnel. Be sure that
all installation, operation, maintenance and repair procedures are performed only by
authorized personnel. Be sure to read user guide carefully before operating the
machine. Failure to follow the instructions included in the user guide may cause
serious injury, loss of life and damage on machine. Please read the warnings next to
the symbols stated below. "Kaynak Tekniği Sanayi ve Ticaret A.Ş." is not liable for
any damages due to improper connection, storage conditions and operation
procedures.
THIS MACHINE HAS BEEN DESIGNED FOR GMAW (MIG/MAG).
SHALL NOT BE USED FOR ANY OTHER PURPOSE.
WARNING: This symbol indicates that the instructions within the user guide must be
followed to avoid potential serious personal injury, loss of life and damages on machine.
Protect yourself and other people.
READ AND UNDERSTAND THE INSTRUCTIONS CAREFULLY:
Be sure to read and understand the user guide before operating the
machine. Failure to follow the instructions stated in the user guide may
cause serious injury, loss of life and damage on equipment.
Do not weld while you are unattentive, unattentive, tired and sleepless.
Arc welding is a safe application when necessary measures are taken to protect the
welder against potential dangers. If these measures missed or disregarded, there may
be dangers such as electric shock, exposing to high levels of fume and gas, arc
radiation, fire and explode which may cause serious injury or even death.
Not :e For detailed information on safety in welding, please read ANSI Z49.1 standard.
Protective Equipments:
Welding operators should wear protective clothing to protect themselves against
burning risk. Welding burns is a frequent risk which may be caused due to splash of
welding sparks on bare skin.
Clothing used while welding may vary based on used welding method but generally it
should provide easy movements and should cover welder s body to protect against'
splashes, sparks and arc radiation.
Expressweld MasterMIG 500W

Page 2
Wool y clothing should be preferred due to its resistance against flame. Synthetic
clothing should not be worn since they will melt when exposed to heat.
Protective clothing should be protected from grease and oil. This kind of materials may
flare and burn uncontrolledly in an environment with oxygen.
Shirtsleeves and trouser hems should not be folded. Since sparks and melted metals
may enter into these folds. Trousers should be kept outside the work shoes and should
not be inserted into it. Otherwise melted metals and sparks may enter into shoe.
Other protective clothing used in dangerous situations are stated below:
Flame resistant clothing,
Gaiters,
Aprons,
Leather cuff gloves and capes,
Helmet used under the welding mask.
To protect hands against burns, cuts and scratches, gloves made from flame resistant
materials such as leather must be used. In addition, to provide some insulation against
electric shock, care should be taken that the gloves made from flame resistant material
are in good condition and dry.
Noise:
To protect ears against sparks and melted metals and to prevent hearing impairment due
to noise of arc welder, ear protectors should be used. When the noise in working
environment is reached to a level that disturbing the ears and causing headache,
auditory problem may occur. In such a condition immediately use your ear protectors.
Hearing impairment may not be noticed until tested and then it may be too late for
treatment.
Importance and Cleanliness of Working Environment:
The tidiness and cleanliness of working environment is important as the maintenance of
welder.
Even the level of potential damage rises up to number of people in the environment.
Although warnings related to machine are read and necessary measures are taken, any
of the personnel tripping over a cable may cause electric shock, contact to hot metal or
falling risk for himself, you and other people.
Expressweld MasterMIG 500W

Page 3
All equipment, cables, hoses and gas cylinders should be kept away from busy places
such as doors, aisles and stairs. Care should be taken for the tidiness of the
environment and when welding is completed working environment should be cleaned.
By this way, both work safety and working efficiency will increase. Besides, other
workers near the welding area may step into weld pool by mistake, therefore safety
guards should be placed around the welding area during welding.
Electric shock danger is the most serious risk that operator may encounter frequently.
Contacting electrically hot parts may cause injuries, death or falling down due to electric
shock and sudden reflex. While machine is operating, do not touch to the electrode,
ground connection or live work piece connected to the machine. Insulate yourself
against electrode, grounding connection or work piece. Immediately after plugging out
the power cable, do not touch metal ends of power cable, there may be electric shock
danger.
Electric shock risk related to welding machine divides into two categories:
Primary voltage shock (e.g. 230-460 V)
Secondary voltage shock (e.g. 20-100 V)
Primary electric shock is very dangerous since it is much higher than welding voltage.
When the power to the machine is open, you can encounter with primary electric shock
while your body is in contact with ground or touching a live point within the machine.
Please note that turning off the ON/OFF switch located on the machine do not cut off
the electric. To cut off the electric to the machine it is necessary to disconnect the
supply cable from connection point or to shut down the fuse of incoming electric.
Never remove side covers of the machine and in case of failure have an authorized
technician to inspect and repair it.
Be sure to ground the machine and work piece.
While installing the machine and making ground connection, follow general electric
rules, all local laws and regulations and instructions of the manufacturer company.
Do not use uninsulated cables and pliers, replace with the new ones. Never dip the
electrode in water for cooling.
ELECTRIC SHOCK can kill.
Expressweld MasterMIG 500W

Page 4
Never simultaneously touch electrically "hot" parts of electrode holders connected to two
separate welders, because voltage between the two can be the total of the open circuit
When working above floor level, use a safety belt to protect yourself from a fall should
you get a shock.
In semi-automatic or automatic welding, welding wire, electrode reel, welding head,
nozzle or torch are also electrically hot“”.
Always be sure the work cable makes a good electrical connection with the metal being
welded. The connection should be as close as possible to the area being welded.
While the welder is electrically hot, do not insert your hand or any other object inside it.
WELDING ARC and ARC RAYS can burn.
Use a shield with proper filter and cover plates to protect your eyes from sparks and the
rays of the arc when welding or observing open arc welding. Skin should be protected
by clothing made from flame resistance material. Protect other nearby personnel with
suitable, non-flammable screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.
When eyes are exposed to UV rays even for a short time, also called as Getting“
Welder s Flash , it may cause burns in your eyes. Getting Welder s Flash may not be'” '
noticed after hours of exposing, but it is too irritating as well as may cause transient
blindness. Normally getting welder s flash is a temporary situation, but exposing eyes to'
UV rays for a long time and frequently may cause permanent damage on eyes. As a
protection measure besides not to watch arc rays, also using welding goggles having
proper filter is necessary.
As a rule, welding should start with a dark colored protective filter then should continue
with a lighter colored filter sufficient to see the area being welded providing that not to
fall under the minimum level. Welding masks protect head, face, ears and neck against
electric shock risk, heat, sparks and fire.
Expressweld MasterMIG 500W
voltage of both welders.

Page 5
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GASES and FUMES can be dangerous.
Expressweld MasterMIG 500W
When welding with electrodes which require special ventilation such as stainless or
hard facing or on lead or cadmium plated steel and other metals or coatings which
produce highly toxic fumes, keep exposure as low as possible and keep the
exposure level under Minimum Limit Values using local exhaust or mechanical
ventilation. In confined spaces or in some circumstances, a respirator may be
required even outdoors. Additional precautions are also required when welding on
galvanized steel.
Do not weld in locations near chlorinated hydrocarbon vapors coming from
degreasing, cleaning or spraying operations. The heat and rays of the arc can react
with solvent vapors to form a highly toxic gas, and other irritating products.
Welding may cause fumes and gases that are injurious to health. Always enough
ventilation should be used or fumes and gases should be exhausted from breathing
place.
Generally in welding applications temporary effects for short time can be seen such
as face and skin burning, dizziness, nausea and fever based on exposure period
and amount of fume. Long time fume exposure may cause iron loading and
dysfunctions in lungs. Bronchitis and pulmonary fibrosis are primary effects occurred.
Some electrodes may include alloys that entail special ventilation. Label of these
products that entails special ventilation should not be ignored and Product Safety
Information Form reports should be read carefully. When welding on this kind of
materials it may be necessary to use gas mask.
Keeping your head out of fume clouds is the easiest way for protection against toxic
fumes and gases.
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;
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Avoid breathing these fumes and gases, air circulation or mechanical ventilation
equipments should be used and if the ventilation is not enough gas mask should be
used.

Page 6
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WELDING and CUTTING SPARKS can cause
fire or explosion.
Expressweld MasterMIG 500W
Where compressed gases are to be used at the job site, special precautions should be
used to prevent hazardous situations.
Do not heat, cut or weld tanks, drums or containers until the proper steps have been
taken to insure that such procedures will not cause flammable or toxic vapors from
substances inside. Tanks, drums or containers can cause an explosion even though
they have been cleaned. For information, read Recommended Safe Practices for the
Preparation for Welding and Cutting of Containers and Piping That Have Held
Hazardous Substances , AWS F4.1 from American Welding Society.
Connect the work cable to the work as close to the welding area as possible. Work
cables connected to the building framework or other locations away from the welding
area increase the possibility of the welding current passing through lifting chains, crane
cables or other alternate circuits. This can create fire hazards or overheat lifting chains
or cables until they fail.
Keep away fire hazards from welding area and have a fire extinguisher readily
available. Remember that welding sparks and hot materials from welding can easily go
through small cracks and openings to adjacent areas. Until ensuring that precautions
are used to fully clean flammable and toxic gases, never weld any tanks, drums,
containers or material. Never operate welder in places that flammable gases, vapors or
liquid fuels exist.
Always keep in mind the fire risk due to high temperatures in arc welding. Welding arc
temperature may increase up to 5000 C, but generally this temperature is not the only
fire reason. Fire risk may be occurred due to sparks or melted metals splashed around.
These metals may splash up to ten meters away. Therefore keep inflammable materials
away from welding area. Also make sure that your work piece do not contact with any
material that may flare when heated. Material that may flare with contact are divided
into three categories as liquids (fuel, oil, paint, thinner etc.), solids (wood, cartoon,
paper etc.) and gases (acetylene, hydrogen etc.).
Inspect the welding area. If there are systems operating with fuel or hydraulic oil and if
you cannot move welding area or system, place fire-resistant protecting screen
between them.
“
”
°

Page 7
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FIRE DANGER may cause accidents.
Expressweld MasterMIG 500W
If you are working above floor level or on stairway, make sure there is no flammable or
explosive material below. Also please remember that slag and sparks may splash on
people around.
Special precautions should be used when welding in dusty environment. Dust particles
may burn and may cause sudden fire or explosion. If you don t have information about
the inflammableness and fugacity of the dust in the environment, do not start welding
or cutting until it is inspected and approved by expert and authorized person.
Before starting to the welding procedure, please check if there is any flammable or self-
ignition under heat coating on the surface of your work piece.
When you have a break in welding process, please make sure that the electrode holder
do not contact to the ground or work piece.
If you are welding within ten meters to the place where flammable materials located,
have a observor near you. This observer should watch where the sparks and splashes
go and should access easily to the fire extinguishers when necessary. After welding
process, please check if there is any fume around for half an hour with the observer.
As in other emergency situations, first rule is not to panic in situations where welding
accidents happen. According to the size of the fire, to warn the others activate the fire
alarm, inform fire station, shut down the welder and leave the building from fire exits as
soon as possible.
'
To prevent the risk for every kind of arc glare and fire, never leave the welding torch on
welding desk or any surface in contact with work clamp.
Never refuel near to the welding arc or if there is any engine operating in the
surrounding area. Stop the engine and allow it to cool before refueling to prevent spilled
fuel from vaporizing on contact with hot engine parts and igniting. While refilling the
tank, do not spill fuel around.

Page 8
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CYLINDER may explode if damaged.
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MOVING PARTS may hurt your hands.
Expressweld MasterMIG 500W
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. All
hoses, fittings, etc. should be suitable for the welding application and maintained in
good condition with a proper installation.
Always keep cylinders in an upright position securely chained to an undercarriage or
fixed support.
Carefully choose the locations of the cylinders:
Cylinders should be kept away from areas where they may be struck or subjected
to physical damage.
Cylinders should be located to a safe distance from arc welding or cutting
operations and any other source of heat, sparks or flame.
Never allow the electrode, electrode holder or any other electrically hot parts to touch
a cylinder.
Keep your head and face away from the cylinder valve outlet when opening the cylinder
valve.
Valve protection caps should always be in place and hand tight except when the
cylinder is in use or connected for use (including the transportation of the cylinder).
“”
Always keep all safety guards, coverings and equipments in place and maintain in good
condition. Always keep your hands, hair, clothing and tools away from V-belt, gears,
fans and all other moving parts when starting, operating or repairing the equipment.
In some cases, it may be necessary to remove safety guards to perform required
maintenance. Remove the guards only when necessary and replace them when the
maintenance requiring their removal is complete. Always use the greatest care when
working near moving parts.
Never put your hands near to the cooling fan while it is operating.
To prevent accidentally starting gasoline engines while turning the engine or welding
generator during maintenance work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.

Page 9
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For electrically powered equipment.

WELDED HOT material may cause burns.

ELECTRIC and MAGNETIC fields may be
hazardous on human health.

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Compliance with CE NORMS,
SAFE USE.
Expressweld MasterMIG 500W
Turn off input power using the disconnect switch at the fuse box before working on the
equipment. Install equipment in accordance with local codes in force.
Power cables should be connected to a well grounded plug for your
safety and proper operation of the equipment.
Periodically inspect the conditions of electrode cables, supply cables and cables
connected to the equipment. If you notice any unproper situation, immediately replace
damaged parts with the new ones. To prevent the risk for every kind of arc glare and
fire, never leave the electrode holder on welding desk or any surface in contact with
work clamp.
GROUNDING:
High amounts of heat may be produced from welding process. Hot surfaces and
material may cause serious burns. While touching or moving this kind of material
always wear gloves.
Electric current flowing through any conductor causes electromagnetic fields. This
electromagnetic field may interfere with devices such as pacemaker. Welders having a
pacemaker shall consult their physician before operating this equipment. Exposure to
electric and magnetic fields may have other health effects which are not known yet
(For detailed information, refer to Page 12).
This machine has been manufactured in compliance with "European Directivesı
This machine is suitable for welding in environments where electric shock risk is high.
".

Page 10
EXTRA SAFETY PRECAUTIONS:
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PRECAUTIONS FOR OTHERS IN THE WORKING ENVIRONMENT:
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Expressweld MasterMIG 500W
In some situations, it may be difficult to use safety precautions, but even so follow
stated instructions. Keep your gloves dry, if getting wet is unavoidable, have a spare
gloves. Stand on a dry and insulating material such as plywood, plastic mat etc.
Insulate your body from work piece.
If welding must be performed under electrically hazardous conditions such as in
damp locations or while wearing wet clothing, on metal structures such as floors,
gratings or scaffolds, when in cramped positions such as sitting, kneeling or lying, if
there is a high risk of unavoidable or accidental contact with the workpiece or ground,
prefer to use the following equipment:
Semi-automatic DC Constant Voltage Welder
DC Manual Arc Welder
AC Welder with Reduced Voltage Control
Conditions of electrode holder and cables is too important. Plastic or fiber insulating
material on holder prevents contact to electrically hot" places. Before starting the
welder, always check the condition of the holder. Replace the old and worn ones,
never attempt to repair. Perform same checks for the cables, since the cost will be
high to replace cables, repair by using tubw with high insulation or similar. Always
check the insulations before every time you start the welder.
If you feel an electric shock, always remember that this is a warning. In such case
before continue to work, check your equipment, working routines and working
environment against electric shock. If there is an abnormal situation, never continue
welding without using the necessary precaution. If you cannot determine the source
of problem, have an expert and authorized person to check it.
“
Cleanliness and tidiness of working environment is extremely important for your
safety as well as other people in the environment. While other welders working or
people walking around the welding area may step onto your weld puddle by mistake
or may cause you and others to fall down by tripping over cables and electric shock
risk. Also welding sparks may cause burn danger by splashing on other people
around.
Surrounding welding area with fire resistant screens reduces potential risks.
Also warn other people in the working environment for the use of work safety
equipments. Especially when they have to be in welding area, warn them to use fire
and flame resistant work safety clothing, welding goggles, welding mask, insulated
work shoes and gloves. Keep away any people who do not follow the instructions.

Page 11
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INFORMATION ON RESIDUAL RISKS:

Expressweld MasterMIG 500W
When working above floor level, use related warning signs to prevent splashing of
melted metals and welding sparks on people under working area.
Electromagnetic fields may be hazardous for pacemakers.
Make the necessary warnings and use warning signs for other people working or
passing around who are not related to welding work. Inform them that they have to
contact with their doctors before working in a welding environment.
In welding environments there is high electric shock risk. Other people may encounter
electric shock risk by tripping over cables while working. Do not use uninsulated
welding cables, route cables through insulated, plastic channels if available.
Expressweld MasterMIG 500W welder has been designed and manufactured in
compliance with safety rules required by TS EN 60974-1 standard. To eliminate the
safety risks all necessary precautions have been taken, precautions that need to be
taken by operator and users and all rules to be followed have been stated in the user
manual. It is not possible to eliminate the risks in cases that necessary care is not
taken or safety measures are not used. These risks may cause slight injuries but at the
same time fire and explosion risks may be fatal for more than one people. It is the
user s responsibility to assure the safety of welding environment, in cases that
precautions are not used or lacking, work must be stopped immediately and authorized
people should be informed.
'

Page 12
ELECTROMAGNETIC COMPATIBILITY
ELECTROMAGNETIC fields may be hazardous.
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After turning of the power unit, you should wait approximately for 5-10 seconds
for electrical stability of the machine and then start to welding procedure.
Designed according to TS EN 60974-1:2007.
EMU Class of machine according to TS EN 55011:2007 is Group 2 Class A.
For detailed information refer to TS EN 60974-10:2009.
While welding do not turn on/off the power switch. This situation may
cause voltage fluctuations in mains as well as shorten the economic life
of the machine.
Expressweld MasterMIG 500W
Welding machine has been designed according to related norms and rules. In addition,
it may cause safety problem for the devices affected from electromagnetic waves since
it may produce interfering electromagnetic waves for telecommunication devices
(telephone, radio, television) and safety equipments. To prevent and eliminate the
effect of these electromagnetic waves (interferences) produced by the machine, please
read below explanations carefully.
Welding machine has been intended to use in industrial fields. In case of using in living
spaces, to eliminate potential effects of electromagnetic waves it is necessary to use
specific precautions. User should certainly install and operate the machine as per the
instructions included in the user guide. In case any electromagnetic interference is
detected, user should take necessary precautions for this. If necessary, Kaynak Tekniği
Sanayi ve Ticaret A.Ş. will help to the user in this matter. No modifications should be
made on the machine without the written consent of Kaynak Tekniği Sanayi ve Ticaret
A.Ş
Before the installation of the welding machine, user should check if there is any device
in the working area that may be affected due to electromagnetic waves. Some of these
devices are stated below:
..
1- Lead wires, control cables and phone cables near the working area and machine,
2- Radio and/or television receivers and transmitters, telecommunication devices,
3- Computers or computer controlled devices,
4 - Safety and control equipments for industrial processes,
5- Personal medical devices such as pacemakers and hearing aids,
Electromagnetic fields may interfere with some pacemakers. Therefore welders
having pacemakers should contact with their physicians before welding process.
6- Calibration and measuring devices.

Page 13
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1 -
2 -
3 -
4 -
5 -
6 -
7 -
8 -
Expressweld MasterMIG 500W
Electromagnetic resistance of the equipments located and working in working area
should be checked. User must be sure that other surrounding devices will operate in
harmony with the machine. To achieve this extra protection measures may be
necessary.
To reduce the effect and exposure level of electromagnetic waves produced by the
machine, below warnings should certainly taken into account:
Mains supply connection should be performed as explained in the user manual. If
electromagnetic interference occurs, it may be necessary to take some precautions
like filtering the electric main.
Lead wires (electrode and work cables) should be as short as possible and should be
routed together. Never wrap these cables around your body and stand between the
cables and pay attention that the cables are not on the grounded surfaces.
Work cable should be connected to the piece being welded as close as possible.
While welding, keep the power unit in a place as far as possible.
Insulation of cables within the working area may reduce the electromagnetic
interference.
This situation may be necessary for some special applications.
To reduce electromagnetic interference and increase work safety, ground the work
piece if possible. User should check if this grounding may cause problem for himself
and for the machine.
Ideal measurements of the working area should be determined based on the
construction of this area and other factors included.
To achieve respectively harmonic current emissions and voltage fluctuations and
flicker limits according to TS EN 61000-3-12 and TS EN 61000-3-11 standards,
recommended mains supply s minimum short circuit power should be 3.5 MVA and
maximum impedance should be 0.05
'
Ω.

Page 14
2 General Information, Warnings and Operation Conditions
Warning !
Read entire section before installing and starting the machine.
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Expressweld MasterMIG 500W
Do not install, operate or repair the welder without reading safety precautions included
in user manual. Keep this user manual and place to an easy accessible place.
After completing the work or if you will discontinue working for a long time, disconnect
the mains supply.
Do not insert any object into the welder. While the welder is operating, especially do
not touch to the moving parts with your fingers.
Do not perform any modification on the machine. This may affect the machine features
and cause change in technical values.
It is forbidden to perform any modifications and adaptations on the machine.
Performing any modifications and adaptations, not only cause losing guarantee rights
but also may endanger the usage safety of the machine and may cause electric shock
for the users.
Always ground the welder before operating. Various welders or other electrical devices
should be connected in series if they are using the same grounding line, all machines
or devices should be connected in parallel to each other. Cross sectional area of the
grounding cable of the welder should not be less than the cross sectional area of the
cable in the mains input.
While welding, do not change the position of Welding Voltage Selector Switch
Welder should be used in places with good environment lighting and should not be
used in dark places. Also this welder has been designed to be used indoors and is not
suitable for using under sunlight, rain and snow. Welder cannot be used for pipe
melting works.
Welder has been designed to be used indoors and is not suitable for using under
sunlight, rain and snow.
Misuse or welding machine damages due to user mistake voids the guarantee rights.
Do not step on torch cable and do not keep the folding angle of the cable too narrow.
Accepted ambient temperature while operating is between - 10 C and + 40 C.
Accepted ambient temperature while transporting and storing is between - 20 and +
55
Allowable relative humidity rate is up to 90% at 20 C and up to 50% at 40 C.
“”.
°°
°°
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℃.