Clarke MIG120 MULTI Mode d’emploi

OPERATION & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS GC0722

MIG/MMA/TIG INVERTER WELDER

MODEL NO: MIG120 MULTI

PART NO: 6015601

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

INTRODUCTION

Thank you for purchasing this CLARKE Welder. Before attempting to operate

the machine it is essential that you read this manual thoroughly and carefully

follow all instructions given. In doing so you will ensure the safety of yourself

and that of others around you, and you can also look forward to the welder

giving you long and satisfactory service.

When unpacking, any damage or deficiency should be reported to your

CLARKE dealer immediately.

SPECIFICATIONS

NOTE: The details and specifications contained herein, are correct at the

time of going to print. However, CLARKE International reserve the

right to change specifications at any time without prior notice.

MIG120 Multi

Unpacked Weight (kg) 6.8

Dimensions (l x w x h) (mm) 305 x 155 x 233

Power Supply 230V~ 50Hz

Connecting plugs BS1363 (13A)

Max Input Power 3.9 KW

Max Input Current 17.3A

No Load Voltage 63V

Output Welding Current MIG 20A/15V -120A/20v

MMA 20A/18.8V - 100A/24V

TIG 20A/10.8V - 100A/14V

IP Rating IP21S

Insulation Grade Class 1 - Grade H

Suitable Electrode size 1.6-3.2mm

Welding Wire size 0.6mm, 0.8mm, 0.9mm & 1.0mm (flux cored)

0.6mm, 0.8mm (solid)

Welding Capacity (Mild Steel) 1-5 mm (MIG)

1.5-4.5 (MMA)

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or [email protected]

PRINCIPLES OF THE MACHINE

The MIG120 Multi is an inverter type welding machine, suitable to carry out

Gas and No Gas CO2welding, MMA, TIG and MIG (MAG -USA welding). The

welder is mainly used for CO2gas protected welding which has the

advantages of high energy efficiency, strong arc penetration and small

welding deformation.

Weldable materials include low carbon steel, low alloy steel, high strength

steel, stainless steel and aluminium alloy. Methods include full position spot

welding, butt welding, fillet welding and lap welding. The stable welding

process can be obtained by using pure CO2, CO2+Ar, CO2+ O2and other

protective gases. The torch is suitable for wire diameters of 0.6-1.0mm.

Manual Metal Arc (MMA) welding uses a coated consumable electrode

(stick) to lay the weld, therefore an additional welding torch kit is not used. The

arc melts the core of the electrode to produce drops of molten metal (weld

pool) that cool to create the welded joint. Because of the versatility and

simplicity of MMA welding, it requires less skill and is used primarily to weld iron

and steel (including stainless steel. but nickel and copper can also be welded

using this method.

MIG (Metal Inert Gas) welding allows you to fuse together two similar metals

without altering the properties of the metal.

A consumable wire electrode is continuously fed through the welding torch

fitted with a concentric gas nozzle. the wire is connected to a high voltage

supply which creates an electric arc between the electrode (the wire) and

the workpiece. The arc is used to create the required heat to turn the metal

into a molten state. The wire is used as both the electrode and as a filler.

The gas is used to prevent oxidation and to shield the arc and the weld from

atmospheric contamination. The choice of gas is dependent upon the

material being welded. This machine is designed to be used for both metal

ARC (MMA) and TIG welding.

(TIG welding leads are not supplied with the machine. These are however,

readily available from your CLARKE dealer (Part number 6012233).

A wide selection of accessories and consumables are available from your

CLARKE dealer (see page 36)

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

SUITABILITY OF DIFFERENT METHODS

When using the welder in a gasless configuration the shielding gas is created

from the flux within the welding wire.

When using the welder outside you may need to erect a wind break to make

sure the shielding gas is not blown away, thereby leaving a poor quality weld.

ENVIRONMENTAL RECYCLING POLICY

Through purchase of this product, the customer is taking on the

obligation to deal with the WEEE in accordance with the WEEE

regulations in relation to the treatment, recycling & recovery and

environmentally sound disposal of the WEEE.

In effect, this means that this product must not be disposed of with general

household waste. It must be disposed of according to the laws governing

Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal

facility.

If disposing of this product or any damaged components, do not dispose of

with general waste. This product contains valuable raw materials. Metal

products should be taken to your local civic amenity site for recycling of metal

products.

MMA/Arc Welding Carbon Steel, Low Alloy Steel, Stainless Steel, Cast

Iron.

MIG Welding Carbon Steel, Mild Steel, Stainless Steel

TIG Welding Carbon Steel, Low Alloy Steel, Stainless Steel, Cast

Iron, Titanium, Copper + Brass.

Metal Being Welded Suitable Gas Part number

Mild Steel Carbon Dioxide (CO2) 6000642

Stainless Steel Argon 6000663

Aluminium

Thin Sheet Metal/Mild

Steel

Carbon Dioxide (CO2)/Argon Mix 6000662

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SAFETY PRECAUTIONS FOR ALL TYPES OF WELDING

FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY.

GENERAL PRECAUTIONS

BURN PREVENTION

Wear protective clothing - gauntlet gloves designed for use in welding, apron,

and protective shoes. Button shirt collar and pocket flaps and wear cuffless

trousers to avoid entry of sparks and slag. Wear helmet with safety goggles or

glasses with side shields underneath, appropriate filter lenses or plates

(protected by clear glass). This is a MUST for welding (and chipping) to protect

the eyes from radiant energy and spatter. Replace cover glass when broken,

pitted, or spattered. Avoid oily or greasy clothing. A spark may ignite them. Hot

metal should never be handled without gloves. First aid facilities and a

qualified first aid person should be available unless medical facilities are close

by for immediate treatment of flash burns of the eyes and skin burns. A hard

hat should be worn when others work overhead. Flammable hair preparations

should not be used by persons intending to weld or cut.

NOTE: ALL protective wear incl. masks & head shields MUST comply with

PPE Regulation (EU) 2016/425.

TOXIC FUME PREVENTION

Severe discomfort, illness or death can result from fumes, vapours, heat, or

oxygen enrichment or depletion that welding (or cutting) may produce.

Prevent them with adequate ventilation. NEVER ventilate with oxygen. Lead-,

cadmium-, zinc-, mercury- and beryllium-, bearing materials, when welded (or

cut) may produce harmful concentrations of toxic fumes. Adequate local

exhaust ventilation must be used, or each person in the area as well as the

operator must wear an air- supplied respirator. For beryllium, both must be

used. Metals coated with or containing materials that emit toxic fumes should

not be heated unless coating is removed from the work surface, the area is

well ventilated, or the operator wears an air-supplied respirator. Work in a

confined space only while it is being force ventilated and, if necessary, while

wearing an air-supplied respirator. Vapours from chlorinated solvents can be

decomposed by the heat of the arc (or flame) to form PHOSGENE, a highly

toxic gas, and other lung and eye irritating by-products. The ultraviolet

(radiant) energy of the arc can also decompose trichloroethylene and

perchloroethylene vapours to form phosgene. DO NOT WELD where solvent

WARNING: AS WITH ALL MACHINERY, THERE ARE CERTAIN HAZARDS

INVOLVED WITH THEIR OPERATION AND USE. EXERCISING RESPECT AND

CAUTION WILL CONSIDERABLY LESSEN THE RISK OF PERSONAL INJURY.

HOWEVER, IF NORMAL SAFETY PRECAUTIONS ARE OVERLOOKED, OR

IGNORED, PERSONAL INJURY TO THE OPERATOR MAY RESULT.

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vapours can be drawn into the welding atmosphere or where the radiant

energy can penetrate to atmospheres containing even minute amounts of

trichloroethylene or perchloroethylene.

FIRE AND EXPLOSION PREVENTION

Causes of fire and explosion are:

1. Combustibles reached by the arc, flying sparks, hot slag or heated

material;

2. Short circuits.

BE AWARE that flying sparks or falling slag can pass through cracks, along

pipes, through windows or doors, and through wall or floor openings, out of

sight of the goggled operator.

To prevent fires and explosion: keep equipment clean and operable, free of

oil, grease, and (in electrical parts) of metallic particles that can cause short

circuits. If combustibles are in the area, DO NOT weld. Move the work if

practicable, to an area free of combustibles.

Avoid working in paint spray rooms, dip tanks, storage areas, ventilators. If the

work cannot be moved, move combustibles away from sparks and heat; or

protect against ignition with suitable fire-resistant covers or shields.

Walls, ceilings, and floor near work should be protected by heat resistant

covers or shields. Fire watcher must be standing by with suitable fire

extinguishing equipment during and for some time after welding or cutting if:

1. Appreciable combustibles (including building construction) are within 10m.

2. Appreciable combustibles are further than 10m, but can be ignited by

sparks.

3. Openings (concealed or visible) in floors or walls can expose combustibles

to sparks.

4. Combustibles adjacent to walls, ceilings, roofs or metal partitions can be

ignited by radiant or conducted heat.

After work, check that area is free of sparks, glowing embers and flames. An

empty container that held combustibles or that can produce flammable or

toxic vapours when heated, must never be welded on or cut, unless the

container has first been cleaned. This includes a thorough steam or caustic

cleaning (or a solvent or water washing, depending on the combustible’s

solubility) followed by purging and inerting with nitrogen or carbon dioxide,

and using protective equipment.

Water filling just below the working level may substitute for inerting.

A container with unknown contents should be cleaned (see paragraph

above). DO NOT depend on sense of smell or sight to determine if it is safe to

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or [email protected]

weld or cut. Hollow castings or containers must be vented before welding as

they can explode.

In explosive atmospheres, NEVER weld or cut where the air may contain

flammable dust, gas, or liquid vapours.

DO NOT overload arc welding equipment. It may overheat cables and cause

a fire. Loose cable connections may overheat or flash and cause a fire. NEVER

strike an arc on a cylinder or other pressure vessel. It creates a brittle area that

can cause a violent rupture or lead to such a rupture later under rough

handling.

ELECTRIC ARC WELDING

Comply with precautions in above and this section. Arc welding, properly

done, is a safe process but a careless operator invites trouble. The equipment

carries high currents at significant voltages. The arc is very bright and hot.

Sparks fly, fumes rise, ultraviolet and infrared energy radiates and work pieces

are hot. The wise operator avoids unnecessary risks and protects himself and

others from accidents.

BURN PROTECTION

The welding arc is intense and visibly bright. It’s radiation can damage eyes,

penetrate lightweight clothing, reflect from light coloured surfaces and burn

the skin and eyes. Skin burns resemble acute sunburn, those from gas -

shielded arcs are more severe and painful.

PROTECTIVE CLOTHING (PPE) MUST BE WORN

Wear long sleeved clothing (particularly for gas shielded arc) in addition to

gloves, apron and strong shoes. As necessary, use additional protective

clothing such as leather jacket or sleeves, flameproof apron, and fire-resistant

leggings. Avoid outer garments of untreated cotton. Bare skin protection:

Wear dark substantial clothing, Button collars closed to protect the chest and

neck and button any pockets to prevent entry of sparks.

EYE AND HEAD PROTECTION

Protect eyes from exposure to arc. NEVER look at an electric arc without

protection. Welding helmet or shield containing an appropriate filter plate

(Please refer to the section ‘Welding Shield on page 12). Place over face

before striking arc. Protect filter plate with a clear cover plate. Cracked or

broken helmet or shield should NOT be worn; radiation can pass through to

cause burns.

Cracked, broken, or loose filter plates must be replaced IMMEDIATELY.

Replace clear cover plate when broken, pitted, or spattered. WE SUGGEST

you wear flash goggles with side shields under the helmet, to give some

protection to the eyes should the helmet not be lowered over the face before

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an arc is struck. Looking at an arc momentarily with unprotected eyes

(particularly high intensity gas-shielded arc) can cause a retinal burn that may

leave a permanent dark area in the field of vision. Before welding whilst

wearing contact lenses, seek advice from your optician.

PROTECTION OF NEARBY PERSONNEL

For production welding, a separate, well vented room or enclosed bay is best.

In open areas, surround the operation with low reflective, non- combustible

screens or panels. Allow for free air circulation, particularly at floor level.

Provide face shields for all persons who will be looking directly at the weld.

Others working in the area should wear flash goggles. Before starting to weld,

make sure that screen or bay doors are closed.

SHOCK PREVENTION

Exposed live conductors or other bare metal in the welding circuit, or in

unearthed, electrically-LIVE equipment can fatally shock a person whose

body becomes a conductor. DO NOT STAND, SIT, LIE, LEAN ON, OR TOUCH a

wet surface when welding without suitable protection.

PROTECTION FOR WEARERS OF ELECTRONIC LIFE SUPPORT DEVICES

(PACEMAKERS)

Magnetic fields from high currents can affect pacemaker operation. Persons

wearing pacemakers should consult with their doctor before going near arc

welding or spot welding operations.

PROTECTION AGAINST SHOCK

Keep your body and clothing dry. NEVER work in damp area without

adequate insulation against electric shock. Stay on a dry duckboard or rubber

mat when dampness or sweat can not be avoided. Sweat, sea water, or

moisture between body and an electrically LIVE part - or earthed metal -

reduces the body surface electrical resistance, enabling dangerous and

possibly lethal currents to flow through the body.

EARTHING THE EQUIPMENT

When arc welding equipment is earthed according to the National Electrical

Code and the workpiece is earthed, a voltage may exist between the

electrode and any conducting object.

Examples of conducting objects include, but are not limited to, buildings,

electrical tools, work benches, welding power source cases, workpieces, etc.

NEVER touch the electrode and any metal object unless the welding power

source is off. When installing, connect the frames of each unit such as welding

power source, control, work table, and water circulator to the building earth.

Conductors must be adequate to carry earth currents safely. Equipment

made electrically live by stray current may shock, possibly fatally. DO NOT

EARTH to electrical conduit or to a pipe carrying ANY gas or a flammable

liquid such as oil or fuel.

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CABLES

Frequently inspect cables for wear, cracks and damage. IMMEDIATELY

REPLACE those with excessively worn or damaged insulation to avoid possibly

lethal shock from bared cable. Cables with damaged areas may be taped to

give resistance equivalent to original cable. Keep cable dry, free of oil and

grease and protected from hot metal and sparks.

TERMINALS AND OTHER EXPOSED PARTS

Terminals and other exposed parts of electrical units should have insulating

covers secured before operation.

SAFETY DEVICES

Safety devices such as interlocks and circuit breakers should not be

disconnected or shunted out. Before installation, inspection, or service of

equipment, shut off all power and remove line fuses (or lock or red-tag

switches) to prevent accidental turning ON of power. DO NOT open power

circuit or change polarity while welding. If, in an emergency, it must be

disconnected, guard against shock burns, or flash from switch arcing. Always

shut OFF and disconnect all power to equipment. A power disconnect switch

must be available near the welding power source.

PREPARATION OF THE WORKING AREA

The working area must be sufficiently spacious, not humid, and well-ventilated

as to avoid any fumes which develop from the welding process and from

incidental material adhering to the pieces to be welded (oils, paints, tars...)

which may cause danger to the operator.

Avoid welding tanks which may contain flammable residuals.

WARNING: ELECTRIC SHOCK CAN BE FATAL. A PERSON QUALIFIED IN FIRST

AID SHOULD ALWAYS BE PRESENT IN THE WORKING AREA. IF PERSON IS

UNCONSCIOUS AND ELECTRIC SHOCK IS SUSPECTED, DO NOT TOUCH

THE PERSON IF HE OR SHE IS IN CONTACT WITH THE WELDER OR CABLES.

DISCONNECT THE WELDER FROM THE POWER SOURCE AND THEN USE FIRST

AID. DRY WOOD OR OTHER INSULATING MATERIAL CAN BE USED TO

MOVE CABLES, IF NECESSARY, AWAY FROM THE PERSON.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

ADDITIONAL PRECAUTIONS FOR MMA WELDING

1. ALWAYS ensure that there is full free air circulating around the outer casing

of the machine and that the louvres are unobstructed.

2. A welding arc can seriously damage your eyes. Both operator and

spectators must ALWAYS use a proper welding face shield or helmet with

suitable filter lenses. Proper gloves and working clothes should be worn at

all times.

3. ALWAYS remove all flammable materials from the welding area.

4. NEVER remove any of the panels unless the machine is disconnected from

the supply and never use the machine with any of the panels removed.

5. NEVER use or store in a damp environment. DO NOT EXPOSE TO RAIN.

6. NEVER attempt any electrical or mechanical repair unless your are a

qualified technician. If you have a problem with the machine contact your

local CLARKE dealer.

7. ALWAYS keep a fire extinguisher handy (Dry Powder, C02or BCF, NOT

Water).

8. NEVER continue to weld, if, at any time, you feel even the smallest electric

shock. Stop welding IMMEDIATELY and DO NOT attempt to use the machine

until the fault is diagnosed and corrected.

9. NEVER allow the earth cable or torch to become wrapped around the

operator or any person in the vicinity.

A comprehensive range of CLARKE safety equipment for use when welding is

available from your local dealer. See page 37.

Consideration should be given to shielding the supply cable of permanently

installed welding equipment, in metallic conduit or equivalent. Shielding

should be electrically continuous throughout its length.

The shielding should be connected to the welding power source so that good

electrical contact is maintained between the conduit and the welding power

source enclosure.

The welding equipment should be routinely maintained according to the

manufacturer’s recommendations (see page 33). All access and service doors

and covers should be closed and properly fastened when the welding

equipment is in operation. The welding equipment should not be modified in

any way except for those changes and adjustments covered in the

manufacturer’s instructions. In particular, the spark gaps of arc striking and

stabilizing devices should be adjusted and maintained according to the

manufacturers recommendations.

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