Würth MIG/MAG 250 User manual

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MIG/MAG 250
MIG/MMA WELDER
General safety rules
WARNING: Read and understand all instructions. Failure to follow all instructions
listed below may result in serious injury.
CAUTION: Do not allow persons to operate or assemble this MIG/MAG 250
until they have read this manual and have developed a thorough understanding of
how the MIG/MAG 250 works.
WARNING: The warnings, cautions, and instructions discussed in this
instruction manual cannot cover all possible conditions or situations that could
occur. It must be understood by the operator that common sense and caution are factors which cannot
be built into this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY CONSIDERATIONS
1.1 Your Welding Environment
- Keep the environment you will be welding in free from flammable materials.
- Always keep a fire extinguisher accessible to your welding environment.
- Always have a qualified person install and operate this equipment.
- Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly
ventilated areas.
- Always have your welder maintained by a qualified technician in accordance with local, state and
national codes.
- Always be aware of your work environment. Be sure to keep other people, especially children, away
from you while welding.
- Keep harmful arc rays shielded from the view of others.
- Mount the welder on a secure bench or cart that will keep the welder secure and prevent it from
tipping over or falling.
1.2 Your Welder’s Condition
- Check ground cable, power cord and welding cable to be sure the insulation is not damaged. Always
replace or repair damaged components before using the welder.
- Check all components to ensure they are clean and in good operating condition before use.
GB

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1.3 Use of Your Welder
CAUTION
Do not operate the welder if the output cable, electrode, torch, wire or wire feed system is wet. Do not
immerse them in water. These components and the welder must be completely dry before attempting to
use them.
- Follow the instructions in this manual.
- Keep welder in the off position when not in use.
- Connect ground lead as close to the area being welded as possible to ensure a good ground.
- Do not allow any body part to come in contact with the welding wire if you are in contact with the
material being welded, ground or electrode from another welder.
- Do not weld if you are in an awkward position. Always have a secure stance while welding to prevent
accidents. Wear a safety harness if working above ground.
- Do not drape cables over or around your body.
- Wear a full coverage helmet with appropriate shade (see ANSI Z87.1 safety standard) and safety
glasses while welding.
- Wear proper gloves and protective clothing to prevent your skin from being exposed to hot metals,
UV and IR rays.
- Do not overuse or overheat your welder. Allow proper cooling time between duty cycles.
- Keep hands and fingers away from moving parts and stay away from the drive rolls.
- Do not point torch at any body part of yourself or anyone else.
- Always use this welder in the rated duty cycle to prevent excessive heat and failure.
1.4 Specific Areas of Danger, Caution or Warning
Electrical Shock
WARNING
Electric arc welders can produce a shock that can cause injury or death. Touching
electrically live parts can cause fatal shocks and severe burns. While welding, all metal
components connected to the wire are electrically hot. Poor ground connections are a
hazard, so secure the ground lead before welding.
- Wear dry protective apparel: coat, shirt, gloves and insulated footwear.
- Insulate yourself from the work piece. Avoid contacting the work piece or ground.
- Do not attempt to repair or maintain the welder while the power is on.
- Inspect all cables and cords for any exposed wire and replace immediately if found.
- Use only recommended replacement cables and cords.
- Always attach ground clamp to the work piece or work table as close to the weld area as possible.
- Do not touch the welding wire and the ground or grounded work piece at the same time.
- Do not use a welder to thaw frozen pipes.

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Fumes and Gases
WARNING
- Fumes emitted from the welding process displace clean air and can result in injury or death.
- Do not breathe in fumes emitted by the welding process. Make sure your breathing air is clean and safe.
- Work only in a well-ventilated area or use a ventilation device to remove welding fumes from the
environment where you will be working.
- Do not weld on coated materials (galvanized, cadmium plated or containing zinc, mercury or barium).
They will emit harmful fumes that are dangerous to breathe. If necessary use a ventilator, respirator
with air supply or remove the coating from the material in the weld area.
- The fumes emitted from some metals when heated are extremely toxic. Refer to the material safety
data sheet for the manufacturer’s instructions.
- Do not weld near materials that will emit toxic fumes when heated. Vapors from cleaners, sprays and
degreasers can be highly toxic when heated.
UV and IR Arc Rays
DANGER .
The welding arc produces ultraviolet (UV) and infrared (IR) rays that can cause injury to
your eyes and skin. Do not look at the welding arc without proper eye protection.
- Always use a helmet that covers your full face from the neck to top of head and to the back of each
ear.
- Use a lens that meets ANSI standards and safety glasses. For welders under 160 Amps output, use a
shade 10 lens; for above 160 Amps, use a shade 12. Refer to the ANSI standard Z87.1 for more
information.
- Cover all bare skin areas exposed to the arc with protective clothing and shoes. Flame-retardant cloth
or leather shirts, coats, pants or coveralls are available for protection.
- Use screens or other barriers to protect other people from the arc rays emitted from your welding.
- Warn people in your welding area when you are going to strike an arc so they can protect themselves.
Fire Hazards
WARNING
Do not weld on containers or pipes that contain or have had flammable, gaseous or
liquid combustibles in them. Welding creates sparks and heat that can ignite flammable
and explosive materials.
- Do not operate any electric arc welder in areas where flammable or explosive materials are present.
- Remove all flammable materials within 10 m of the welding arc. If removal is not possible, tightly cover
them with fireproof covers.
- Take precautions to ensure that flying sparks do not cause fires or explosions in hidden areas, cracks
or areas you cannot see.
- Keep a fire extinguisher close in the case of fire.
- Wear garments that are oil-free with no pockets or cuffs that will collect sparks.

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- Do not have on your person any items that are combustible, such as lighters or matches.
- Keep work lead connected as close to the weld area as possible to prevent any unknown, unintended
paths of electrical current from causing electrical shock and fire hazards.
- To prevent any unintended arcs, cut wire back to 6 mm stick out after welding.
Hot Materials
CAUTION
Welded materials are hot and can cause severe burns if handled improperly.
- Do not touch welded materials with bare hands.
- Do not touch MIG gun nozzle after welding until it has had time to cool down.
Sparks/Flying Debris
CAUTION
Welding creates hot sparks that can cause injury. Chipping slag off welds creates flying
debris.
- Wear protective apparel at all times: ANSI-approved safety glasses or shield, welder’s hat and ear
plugs to keep sparks out of ears and hair.
Electromagnetic Field
CAUTION
- Electromagnetic fields can interfere with various electrical and electronic devices such
as pacemakers.
- Consult your doctor before using any electric arc welder or cutting device
- Keep people with pacemakers away from your welding area when welding.
- Do not wrap cable around your body while welding.
- Wrap MIG gun and ground cable together whenever possible.
- Keep MIG gun and ground cables on the same side of your body.
Shielding Gas Cylinders Can Explode
WARNING
High pressure cylinders can explode if damaged, so treat them carefully.
- Never expose cylinders to high heat, sparks, open flames, mechanical shocks or arcs.
- Do not touch cylinder with MIG gun.
- Do not weld on the cylinder.
- Always secure cylinder upright to a cart or stationary object.
- Keep cylinders away from welding or electrical circuits.
- Use the proper regulators, gas hose and fittings for the specific application.
- Do not look into the valve when opening it.
- Use protective cylinder cap whenever possible.

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1.5 Proper Care, Maintenance and Repair
DANGER .
- Always have power disconnected when working on internal components.
- Do not touch or handle PC board without being properly grounded with a wrist strap. Put PC board
in static proof bag to move or ship.
- Do not put hands or fingers near moving parts such as drive rolls of fan.
MIG/MAG 250 series use and care
• Do not modify the MIG/MAG 250 in any way. Unauthorized modification may impair
the function and/or safety and could affect the life of the equipment. There are specific applications
for which the MIG/MAG 250 was designed.
• Always check of damaged or worn out parts before using the
MIG/MAG 250 .
Broken parts will affect the
MIG/MAG 250 operation. Replace or repair damaged or worn parts
immediately.
• Store idle
MIG/MAG 250 . When MIG/MAG 250 is not in use, store it in a secure place out
of the reach of children. Inspect it for good working condition prior to storage and before re-use.

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Product description
MIG/MAG 250 series Gas Shielded Inverter arc Welder used the Electric arc to fusion the welding
wire and the base metal and input the gas to protect the welding area to make sure the welding quality.
Due to melting gas shielded arc welding of the welding area protection is simple, convenient, easy for
observation, the torch is easy to operate, high production efficiency, easy for all position welding, easy
to realize mechanization and automation, thus increasingly widely used in practical production.
 MIG/MAG 250 Machine used CO2 and Argon gas as the Shielding gases. With the welding wire
as pole, semi-automatic gas shielded arc welding It is quite popular in welding the materials like low-
carbon steel, alloy steel and stainless steel. Compared with normal hand welding the Gas Shielded
Welder has the advantage of energy saving, material saving, high efficiency, low cost and so on.
 Using single tube IGBT inverter control technology, frequency more than 20 kHz, save electricity,
response quickly.
 A closed-loop feedback control, stable output voltage, strong ability to resist power grid voltage
fluctuation (15%).
 Can continuous adjustable welding voltage, and the welding current to achieve precise matching,
good welding characteristics.
 Dynamic characteristic of welding control circuit, stable welding arc, less spatter and weld moulding
beauty, weld efficiency is high. Suitable for different welding requirements.
 Have 2T/4T function, Suitable for different welding requirements.
 With welding droplet clearing function.
 Can use CO2 and Mixed gas for welding.
 Apply to ф 0.8 - ф 1.2 wire welding.
 With MMA function.
 Under the CO2 with Voltage preset function, under the MMA with current preset function.
 With overheating, overcurrnet and short circuit function.
Safety Operation
Operator’s Self Protection
 Please always follow the rules that conform to safety and hygiene. Wear protective garments to
avoid injuries to eyes and skins.
 Use the welding helmet to cover your head while working with the welding machine. Only by viewing
through the filter lens on the welding helmet can you watch your operation.
 Under no circumstance can you allow any part of your body to touch the welder’s output bipolarity
(the handle of electrode holder and work piece).
Attention
 MIG/MAG 250 series Gas Shielded Inverter Arc Welder is electronic products whose spare parts
are very tender, do not change or adjust with a rush otherwise the switch will be damaged.
 Check the connection to see if it is well connected, whether the earth (ground) connection is reliable,
etc.
 Fumes and gases produced when welding are hazardous to health. Make sure to work in places
where there are exhaust or ventilation facilities to keep fumes or emissions away from the breathing
zone.

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 Please remember to keep arc rays away from the other nearby people when welding. This is only
due to the interference from arc rays.
 Never allow anybody else other than the operator himself to dislocate or modulate the welding
machine.
 Never allow the people with the cardiac pacemaker or any other things which are susceptible to the
electromagnetism to get close to the welding machine, which has interference with the pacemaker’s
normal function.
 The welder can not be used for pipeline ice-out.
 Over-load is forbidden. Please noted the rated continuous loading factor.
 Safety Measures to Be Taken to Assure the Correct Installation and Position.
 Careful precaution must be taken to keep the operator and the machine from the foreign materials
falling from up above.
 The dust, acid and erosible dirt in the air at the job site can not exceed the amount required by the
norm (excluding the emission from the welder).
 The welder must be installed in the place where it can not be exposed to sun and rain. Also it must
be stored in less humid place with the temperature range at -10 ℃ ~ 40 ℃.
 There should be 50 cm space about for the welding machine to have good ventilation.
 Make sure that there is no metal-like foreign body to enter the welding machine.
 No violent vibration in the welder’s surrounding area.
 Make sure that there is no interference with the surrounding area at the installation site.
 Make sure whether there is enough power supply to make the welding machine work properly. Any
power source required to access the welder must be installed with some protective equipments.
 The welder should be installed on the horizontal surface and if it over 15°, there should be added
some anti-dump set.
Safety Check
Each item listed below must be carefully checked before operation:
 Make sure that the welding machine has reliable earth wire connection.
 Make sure that there is no short circuit connection with welder’s both outputs.
 Make sure that there is always sound output and input wire connection instead of exposing it outside.
Regular check needs to be conducted by the qualified personnel after the welder has been installed
over a period of six months, which involves as follows:
 Routine cleaning needs to be done to make sure that there is no such abnormal condition as loose
connection happening in the welding machine.
 The external parts installed with the welder must guarantee that the welder works properly.
 Check the welding cable to see if it can continue to be used before it is worn out.
 Replace the welder’s input cable as soon as it is found to be broken or damaged.
 Please do not hesitate to contact us for technical assistance whenever you come across the problems
you can not work out or you may deem difficult to fix.

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Technical specification
Environment to which the product is subjected
* The surrounding temperature range during welding: -10 ℃ ~ +40 ℃
* During transport or in storage: -20 ℃ ~ +55 ℃
* Relative humidity: at 40 ℃ : ≤ 50%, at 20 ℃ : ≤ 90 %.
* The dust, acid and erosible materials in the air can not exceed the amount required by the norm
(apart from the emissions from the welder). No violent vibration at the job site.
* Altitude no more than 1000 m.
* Keep from raining when it is used outdoors.
The Requirement for Main Supply
* The voltage oscillogram should display actual sine wave, the oscillation of the frequency should not
exceed ±1% of the rated value.
* The oscillation of the supplied voltage should not exceed ±10% of the rated value.
The Welder’s Principle
The MIG Gun Specification
The MIG Gun is composed of the handle, the connecting cable and the gun. One end of the gooseneck
in the handle is connected with the cable and the other end is connected with the diffuser. The protective
gas will be lead through the nozzle.By regulating the switch on the handle the user can control the
welding current.
NOTICE
* Turn off the power before assembling or replacing parts of the MIG Gun.
* The parts like nozzle, diffuser, cable etc. should be replaced when it is damaged and the welding
quality is influenced.
Only when the green light is on, machine with the power can staring welding.
When the yellow light is on, internal temperature is too high, need to wait until the machine
automatically into the normal working condition.
Start Gas Inlet in
advance Welding
Power On
W
ire Feed
Arc Pilot
Welding
Stop
Feeding Wire
W
elding
Power Off
Stop
Gas Inlet

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Burn back time
Because of inertia of wire feeder, welding wire do not stop immediately, so small droplet is created on
top of wire. To eliminate this adverse factor machine is equipped with burn back function. When user
stops welding machie still keep output voltage for certain amount of time so the wire burns back and
eliminates the bulb.
Gas post-flow
In order to protect the welding area, when end of the welding still have gas for protect (last 3S).
MMA function
When put the switch under the MMA, wlding machine can work with electrodes.
Sign & Pictures Illustration
Ground
Three phase stillness transducer–transformer–rectifier
MIG/MAG welder
DC current
Three phases AC power source
X Duty Cycle
I1max Max Input Current
I1eff Effective Input Current
I2: Rated Welding Current
U0 Rated Open Circuit Voltage
U1 Rated Input Voltage
U2 Rated Load V
V Voltage
A Amperage
% Duty Cycle
A/ V~ A/ V: Output Range, Rated Minimum, Rated Maximum Welding Current
and
elated Load Voltage
EN60974-1 International Standard, Welding Equipments – Part 1: Welding Power
Sources
IP21S Case protection class. IP is the code of International Protection. 2 mean
preventing user’s finger from the dangerous parts; preventing the solid
material with the diameter no less than 12.5 mm into the box. 1 means
preventing water dropping vertically which is harmless. S means water
proof test is conducting while the movable parts are standstill.
H Insulation Grade H

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Main Technical Data
Item Unit Specification
Input Voltage V 3 ～400
Frequency Hz 50/60
Max Input Current A 14
Rated Input Capacity kVA 9.9
Open circuit Voltage V 55
Rated Working Voltage V 16.5～26.5
Duty Cycle % 60
Wire diameter mm Ф0.8～Ф1.2
Wire Feeding Speed m/min 2.5～13
CO2 Rated welding current A 250
CO2 welding current range A 50～250
MMA Rated welding current A 200
MMA welding current range A 30～250
Insulation Grade H
Case Protection Grade IP21S
Cooling Type Air
Weight kg 42
Case Size L × W × H mm 621 × 300 × 681

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Installation
Welder´s Placement
* The dust acid and erosible dirt in the air at the job site can not exceed the amount required by the
norm.
* Wlding machine must be installed in the place where it will not be exposed to sun and rain. Also it
must be stored in less humid place with the temperature range at -10°C ~ 40°C.
* In order to have good ventilation there should be at least 50 cm of clear space around welding
machine.
* Smoke extractors should be installed when working indoor.
Connection chart
Connection between Welder and Power Source (See the Input Connection Sketch)
Connect the power source cable at the back board of the welder into the three phase 380~400
voltage power network with breaker.
Notice: Power network earth connection is not power network connection zero.
Item MIG/MAG 250
Air Switch A ≥60
Fuse (Rated Current) A 16
Cable Line mm
2
≥2.5
Notice: The melting current of the fuse is two times of its rated current.
MIG Torch
Torch Switch
Workpiece Mat Earth Clamp
Grounding cable Welder
Gas hose
Power cord
CO
2
Regulator
3
-
400V

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Connection between Welder and Gas Cylinder
* Install the pressure regulator on the gas cylinder, tighten it and make sure there is no gas leak.
* Put the plug of the pressure regulator into the socket of heater.
* Connect the one end of the gas hose with the pressure regulator and tighten with the clip and connect
the other end with the gas valve connector on the back panel of the welder.
Connection between Welder and Wire Feeder
* Choose the right wire according to the diameter and make sure it matches the drive roller, liner and
contact tips.
* Fix the wire spool with the spool axel and make sure the direction is right.
* Adjust the damp bolt to have a right resistance and lead the wire into the drive roller.
Connection between Welder and MIG Gun
* Connect the MIG Gun with the interface on the front panel and fix it.
Connection between Welder and Work Piece
Insert the quick connector of earth cable with earth clamp into current output ‘-’ electrode adaptor on
the second half of the front panel and then screw down clockwise. The earth clamp is connected with
work piece.

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Operation
ATTENTION: The protection class of MIG/MAG 250 series Gas Shielded Inverter Arc Welder
is IP21S. It is forbidden to put in a finger or insert a round bar less than 12.5 mm (metal bar in particular)
into the welder. No heavy force can be employed on the welder.
* The ‘protection indicator light’ will be on after a long time operation, it shows that the inner
temperature is over the permitted data, then the machine should be stopped using for some time to
let it cool down. It can continue using after the ‘protection indicator light’ is off.
* The power source should be switched off after the operation or while temporarily leaving job site.
* Welders should dress canvas work cloth and wear welding mask to prevent the hurt from arc and
thermal radiation.
* Light separating screen should be put in the job site.
* Inflammable or explosive materials are prohibited to access the job site.
* Each connection of the welder should be connected correctly.
Basic Welding Procedure
a) Connect Mig torch, Gas hose, welding wire and connect the power source switch【Power
Indicator Light】; fan is working now.
b) Unscrew the gas flowmeter, the barometer will indicate the pressure.
c) Press the switch of the torch, and the wire will come out form the torch.
REMARKS
* Only until the slag cools off and becomes hardened can the removal work starts.
* To avoid the slag injuring people, never point at the nearby people when you remove slag.
Material
Thickness
mm
Wire
Diameter
mm
Liner Inside
Diameter
mm
Wire feeding
tube
Spec mm
Amperage
A
Voltage
V
Gas Flow
L/min
0.8～1.5 Φ0.8 Φ1.4 1.2×1.6
(
Blue liner
)
50～90 17～18 6
1.0～2.5 Φ0.8 Φ1.4 1.2×1.6
(Blue liner) 60～100 18～19 7
2.5～4.0 Φ0.8 Φ1.4 1.2×1.6
(Blue liner) 100～140 21～24 8
2.0～5.0 Φ1.0 Φ1.6 1.2×1.6
(Black liner) 70～120 19～21 9
5.0～10 Φ1.0 Φ1.6 1.2×1.8
(Black liner) 120～170 23～26 10
5.0～8.0 Φ1.2 Φ1.6 1.2×1.8
(Black liner) 110～180 22～24 10
8.0～12 Φ1.2 Φ1.6 1.2×1.8
(Black liner) 160～300 25～38 12

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Maintenance and Service
Unlike the traditional transformers, the inverter welding machines belongs to the group of scientifically
sophisticated products which uses the modern electronic component parts combined with state-of-the
art technology. Therefore the trained personnel are required for its maintenance. However, due to the
fact that there are very few components to be easily worn out, it doesn’t need regular service apart
from usual cleaning work. Only the qualified people are allowed to be in charge of the repair job. It is
strongly recommended that customers contact our company for the technical back-up or service when
they feel unable to work out the technical hitch or problems.
The Maintenance includes:
* Dust Removal
The professional service man must regularly clean up the dust from the welder by the dry compressed
air (air compressor or the similar device). Meanwhile examination can also be performed to make
sure there are no loose parts and components inside the machine. Immediate cleaning is needed if
there is an accumulation of dust. Under normal circumstance cleaning is only required once a year
unless there is too much dust inside the welder. If so, cleaning needs to be done every quarter of the
year.
* Keep the Welder Cable Plug in good condition
The Welder Cable Plug needs to be checked from time to time. In its regular usage, at least it has to
be inspected each month. However, it is necessary to check it every time when machines was mobile.
WARNING
* If the main loop voltage happens to be a bit higher, safety precaution should be taken before repair
to avoid accidental shock. The untrained people are forbidden to open the case!
* Power source needs to be cut off before dust removal.
* Never tamper with wire or damage the component parts when cleaning.

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Trouble shooting
No. Breakdown Analysis Solution
1
No Wire Feeding
when turning on the
switch of the MIG
Gun
Power is off. Turn on the power.
The s
w
itch of the MIG Gun is damaged. Replace the switch.
2
No Wire Feeding with
normal OCV and Gas
Inlet
The potentiometer of the wire feed
system is damaged.
Replace the
potentionmeter.
The cable of the wire feeder is bro
k
en. Recover the connection.
PCB is defected. Replace the
P
CB.
3
No OCV with
normal Wire Feeding
and Gas Inlet
The main PCB is defected. Replace the main PCB.
Bad contact of the parts inside. Replace the parts.
4 Maladjustment of
Welding Current
The potentiometer is damaged. Replace the potentiometer.
The control PCB is defected. Replace the control PCB.
5 Low OCV The input power is too lo
w
. Increase the power.
6 Arc is unstable and
with splash
The current does not match the voltage.
A
djust.
The size of the wire does not match the
contact tip or the drive roller.
Replace the contact tip or
drive roller.
The resistance of the
w
ire feeding it too
high.
Clean or replace the liner
and do not bend the
welding cable
7
No Arc Pilot with
normal OCV and Wire
Feeding
Short circuit Recover the connection.
To much dirt or rust on the
w
or
k
piece. Clean the dirt or rust.
8 No Gas Protection
The gas hose is bro
k
en. Replace the gas hose.
The gas hose is pressed and jammed. Chec
k
the air flo
w
.
The valve is bro
k
en. Repair or replace the
valve.
9
Wire is bended, even
broken at the entrance
of drive roller and liner
Contact tip is stuc
k
with the wire. Replace the contact tip.
Theinsidediameterofthe contacttip
is too small.
Replace with a right
contact tip.
The end of the liner is too far awa
y
from the drive roller.
Reduce the distance
between liner and drive
roller.
The grooveandthelinerare not aligned.
A
djust until aligned.
The inside diameter of the liner is too
small or to big.
Replace
w
ith a right liner
with right diameter.
The liner is jammed. Clean the liner.
Power Protection: Continually turn on/off in short time is forbidden. It will lock the power source.

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Complete Set Specification
Repair Parts List
No. English name Unit QTY
1 Iron chain m 0.8
2 Filter pcs 1
3 Spacer for power cable pcs 1
4 Power cable pcs 1
5 Back panel pcs 1
6 Leackage protecting switch pcs 1
7 Switch holder pcs 2
8 Gas valve pcs 1

19
No. English name Unit QTY
9 Fan pcs 1
10 Inching switch pcs 1
11 Power PCB pcs 1
12 Driving board for wire feeder pcs 1
13 Rectifier filter board pcs 1
14 Control transformer pcs 1
15 Fan II pcs 1
16 Right side upper panel pcs 1
17 Timing sequence PCB pcs 1
18 Beam pcs 1
19 Right side lower panel pcs 1
20 Bracket for heat sink-II pcs 2
21 Bracket for heat sink-I pcs 2
22 Loarding board pcs 1
23 Driving board pcs 1
24 Rubber wheel pcs 2
25 IGBT Power amplifiers PCB pcs 1
26 Bracket for heat sink-I pcs 1
27 Bracket for heat sink-II pcs 1
28 Bottom panel bracket pcs 1
29 Bottom panel pcs 1
30 Universal wheel pcs 2
31 Strut pcs 2
32 Bracket for transformer pcs 1
33 Bracket Mid-frequency transformer pcs 1
34 Amps sampling board pcs 1
35 Main transformer pcs 1
36 Output reactor pcs 1

20
No. English name Unit QTY
37 Front panel pcs 1
38 Plastic edge pcs 1
39 Eurotype quick connector pcs 2
40 Polar conversion cable pcs 1
41 Rocker Switch pcs 1
42 LED holder pcs 1
43 Insulating flange pcs 1
44 Potentiometer knob pcs 1
45 IGBT heat sink pcs 1
46 Heat sink for FRD pcs 1
47 Rectifier board pcs 1
48 Handle pcs 1
49 Voltage display/Amps display pcs 2
50 Whole wire harness pcs 1
51 Median plate pcs 1
52 Cover plate pcs 1
53 Centre socket pcs 1
54 Insulating spacer for wire feeder pcs 1
55 Driving motor pcs 1
56 Left side lower panel pcs 1
57 Left side top panel pcs 1
58 Latch pcs 1
59 #5 wire spool holder pcs 1
60 Top panel pcs 1
61 Top panel fixed pcs 1

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Complete Set Specification
MIG/MAG 250 Gas Shielded Inverter Arc Welder 1
Product Certificate 1
Operator’s Manual 1
Remarks: a) No guarantee has been made yet to get the welding accessories repaired at any
time because of its breakable attribute.
Transport & Storage
This welding machine comes under the category of indoor equipment. The tolerable temperature for
both transport and storage ranges from -20 to +55℃, and the storage environment should be dry. To
keep the machine from the humidity, it is recommended to free it from moisture and dust before it is
kept in the plastic bag.
Users are suggested to keep carton and shock-proof stuff for the future possible transport. In line-haul,
please prepare another wood carton which is labeled "Keep it from rain", "Handle with care", and
“Precision Instrument etc.”
EC Declaration of Conformity
We declare under our sole responsibility that this product is in conformity with the following standards
and standardization documents:
EN 60974- 1:2012, EN 60974-10:2007 in accordance with the directives: 2006/95/EC,
2004/108/EC.
Technical documentation at:
Würth Hellas SA
23rd Km Athens-Lamia National Road
145 68 Krioneri Attica
Greece
D. Assimosis
General Manager

22
MIG/MAG 250
MIG/MMA WELDER
ΓΕΝΙΚΟΙ ΚΑΝΟΝΕΣ ΑΣΦΑΛΕΙΑΣ
ΠΡΟΕΙΔΟΠΟΙΗΣΗ : Διαβάστε και κατανοήστε πλήρως όλες τις οδηγίες. Η μη
τήρηση όλων των οδηγιών που εκτίθενται παρακάτω μπορεί να οδηγήσει σε σοβαρό τραυματισμό.
ΠΡΟΣΟΧΗ: Μην επιτρέπετε σε κανέναν να χειρίζεται ή να εκτελεί εργασίες
συναρμολόγησης σε αυτήν τη μηχανή MIG/MAG 250, εάν προηγουμένως δεν έχει
διαβάσει το παρόν εγχειρίδιο και κατανοήσει πλήρως το πώς λειτουργεί η μηχανή
MIG/MAG 250.
ΠΡΟΕΙΔΟΠΟΙΗΣΗ: Οι προειδοποιήσεις, οι επισημάνσεις κινδύνων και οι
οδηγίες που αναφέρονται στο παρόν εγχειρίδιο οδηγιών δεν μπορούν να καλύψουν
πλήρως όλες τις πιθανές συνθήκες ή καταστάσεις που μπορεί να εκδηλωθούν. Ο
χειριστής πρέπει να κατανοήσει ότι η κοινή λογική και η επίδειξη προσοχής είναι παράγοντες που δεν
μπορούν να ενσωματωθούν στο παρόν προϊόν, αλλά συνιστούν κανόνες που θα πρέπει να
εφαρμόζονται από τον ίδιο το χειριστή.
ΦΥΛΑΞΤΕ ΑΥΤΕΣ ΤΙΣ ΟΔΗΓΙΕΣ
ΣΗΜΑΝΤΙΚΟΙ ΠΑΡΑΓΟΝΤΕΣ ΑΣΦΑΛΕΙΑΣ
1.1. Περιβάλλον συγκόλλησης
- Φροντίζετε ώστε να μην υπάρχουν καθόλου εύφλεκτα υλικά στο περιβάλλον στο οποίο πρόκειται να
εκτελέσετε εργασίες συγκόλλησης.
- Έχετε πάντα σε ετοιμότητα και σε θέση εύκολης πρόσβασης έναν πυροσβεστήρα στο περιβάλλον
συγκόλλησης.
- Αναθέτετε πάντα την εγκατάσταση και τη λειτουργία αυτού του εξοπλισμού σε άτομα που διαθέτουν
τα κατάλληλα προσόντα.
- Βεβαιωθείτε ότι η περιοχή εργασίας είναι καθαρή, στεγνή και με καλό αερισμό. Μην λειτουργείτε τη
μηχανή συγκόλλησης σε περιοχές που είναι βρεγμένες, υγρές ή με ανεπαρκή αερισμό.
- Αναθέτετε πάντα τη συντήρηση της μηχανής συγκόλλησης σε εξειδικευμένο τεχνικό, σύμφωνα με τους
τοπικούς, περιφερειακούς και εθνικούς κώδικες.
- Προσέχετε πάντα το περιβάλλον εργασίας σας. Βεβαιωθείτε ότι δεν υπάρχουν άλλα άτομα, και κυρίως
παιδιά, στην περιοχή ενώ εκτελείτε εργασίες συγκόλλησης.
GR