Clarke 6014505 MIG145 No Gas Gas Mig v2 Instructions

NO GAS/GAS MIG WELDER MODEL NO: MIG145

PART NO: 6014505

OPERATION & MAINTENANCE INSTRUCTIONS

ORIGINAL INSTRUCTIONS GC1121 - rev 11

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INTRODUCTION

Thank you for purchasing this CLARKE MIG 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.

GUARANTEE

This CLARKE product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase. Please keep your receipt as proof of purchase.

This guarantee is invalid if the product is found to have been abused or tampered with in any way, or not used for the purpose for which it was intended.

Faulty goods should be returned to their place of purchase, no product can be returned to us without prior permission.

This guarantee does not effect your statutory rights.

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.

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SAFETY PRECAUTIONS FOR ALL TYPES OF WELDING

FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY

GENERAL PRECAUTIONS

A) 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 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. Ear plugs should be worn when working overhead or in a confined space. 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 Directive 89/686/EEC

B) 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 products. The ultraviolet (radiant) energy of the arc can also decompose trichloroethylene and

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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perchloroethylene vapours to form phosgene. DO NOT WELD or cut where solvent vapours can be drawn into the welding or cutting atmosphere or where the radiant energy can penetrate to atmospheres containing even minute amounts of trichloroethylene or perchloroethylene.

C) FIRE AND EXPLOSION PREVENTION Causes of fire and explosion are:

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

2. Misuse of compressed gases and cylinders.

3. 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 combustibles 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.

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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 weld or cut. Hollow castings or containers must be vented before welding or cutting as they can explode.

In explosive atmospheres, never weld or cut where the air may contain flammable dust, gas, or liquid vapours.

ELECTRIC ARC (MIG, TIG) 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.

A) BURN PROTECTION The welding arc is intense and visibly bright. Its 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.

DONT GET BURNED! FOLLOW ALL SAFETY PRECAUTIONS!

PROTECTIVE CLOTHING 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). 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 an arc is struck. Looking at an arc momentarily with unprotected eyes (particularly high

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intensity gas-shielded arc) can cause a retinal burn thatmay 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.

B) TOXIC FUME PREVENTION Comply with all precautions in 1B.

C) FIRE AND EXPLOSION PREVENTION 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.

D) 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.

E) PROTECTION AGAINST SHOCK Keep 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.

1) 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.

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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.

2) TORCH A fully insulated torch should be used without protruding screws or other damage.

3) CONNECTORS Fully insulated lock-type connectors should be used to join welding cable.

4) 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.

5) TERMINALS AND OTHER EXPOSED PARTS Terminals and other exposed parts of electrical units should have insulating covers secured before operation.

6) 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.

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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.

ADDITIONAL PRECAUTIONS FOR MIG 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. 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 check that the pressure regulator and gauges (where fitted), are working correctly. DO NOT lubricate the regulator.

4. ALWAYS use the correct regulator. Regulators are designed to be used with a specific gases.

5. ALWAYS inspect the torch hose before use to ensure it is in good condition.

6. ALWAYS keep the free length of torch hose outside the work area.

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

8. 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.

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.

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9. The MIG welding process uses an INERT gas to protect the weld pool. It isimportant to ensure the appropriate gas is being used. NEVER use gas from a cylinder, the content of which is unknown.

NEVER a. Use a damaged cylinder.

b. Lift the cylinder by the valve.

c. Expose the cylinder to a heat source or sparks.

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

11. ALWAYS keep fire extinguisher handy....Dry Powder, C02 or BCF, NOT Water

12. 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.

13. 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.

14. NEVER point the MIG torch at any person or animal.

15. NEVER touch the MIG torch nozzle until the welder is switched OFF and the nozzle has been allowed to cool.

16. NEVER connect, disconnect, or attempt to service the welding torch, until the machine is switched OFF and disconnected from the mains supply.

17. NEVER allow the earth cable or torch hose 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.

the mains supply. 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 manufacturers recommendations. 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 manufacturers 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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ELECTRICAL CONNECTIONS

This product is provided with a standard 13 amp, 230 volt (50Hz), BS 1363 plug, for connection to a standard, domestic electrical supply. Should the plug need changing, make sure that a plug of identical specification is used.

If the colours of the wires in the power cable do not correspond with the markings on the terminals of your plug, proceed as follows.

Connect the blue wire to the terminal which is marked N.

Connect the brown wire to the terminal which is marked L.

Connect the Yellow and Green wire to the terminal which is marked E or .

We recommend that this machine is connected to the mains supply via a Residual Current Device (RCD)

If in doubt, consult a qualified electrician. DO NOT attempt any repairs yourself.

WARNING: READ THESE ELECTRICAL SAFETY INSTRUCTIONS FULLY BEFORE CONNECTING THE PRODUCT TO THE MAINS SUPPLY.

WARNING: THE WIRES IN THE CABLE ARE COLOURED AS FOLLOWS: BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN = EARTH

Plug must be BS1363/A approved.

Always fit

make sure that the outer sheath of

Neutral (Blue)

Live (Brown)

a 13 Amp

the cable is firmly held by the clamp

fuse.

Earth (Green and Yellow)

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SAFETY SYMBOLS

INVENTORY

Any damage or deficiency should be reported to your CLARKE dealer immediately. Some of the components are stored within the machine side compartment.

The components include the following:

1 x Mig Welder

1 x Welder

1 x Carry Handle

1 x Pull Handle

1 x Handle Cap

1 x Handle Fixings Pack

3 x Copper Torch Tips - 2 x 0.8 mm, 1 x 1.0 mm (fitted)

Mild Steel Wire Mini Spool 0.6mm

Flux cored mild steel wire mini spool 0.9 mm

1 x Instruction Manual

1 x Wheel Kit

General Warning. This indicates that failing to follow these instructions could result in injury or damage to the machine.

Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment.

Read instruction manual before use.

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OVERVIEW

NO DESCRIPTION NO DESCRIPTION

1 Pull Handle 6 Torch

2 Carry Handle 7 Torch Hose

3 Gas Connection Point 8 Earth Clamp

4 Side Panel 9 Wheels

5 Control Panel

7 8

9

1 2

3 4

5

6

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THE CONTROL PANEL

1. Thermal overload light. If the duty cycle is exceeded as a result of welding too long with a high current, the yellow overload light will illuminate and the welder will turn off. When the welder has cooled down (approx. 5 to 10 minutes), the power will be restored and welding can recommence.

2. Power ON/OFF switch. When the power is ON the green switch will be illuminated. When the welder is no longer required, the Power On/Off switch should be switched to the OFF position and the plug should be disconnected from the mains supply.

3. Current setting switches MIN-MAX & 1-2. Used together these two switches provide 4 increasing power levels as follows:

MIN-1

MIN-2

MAX-1

MAX-2.

4. Wire speed control knob. As a general rule, a higher current requires a higher wire speed.

1. Open the side panel, by pushing the latch down and allowing the side panel to drop down.

2. Remove any loose items that have been transported inside such as the handle, wheel kit etc.

1

2

3

4

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ASSEMBLING THE WELDING SHIELD

1. The welding shield shown on page 12 is supplied flat for shipping. Fold the sides of the shield around and clip to the top panel.

2. Insert both the glass lens panels into the recess inside the shield.

The clear glass must be fitted first to face the outside.

3. Insert the two plastic screws and use the plastic wingnuts to clamp the glass panels to the shield.

The clear glass panel should be replaced when it becomes badly pitted.

4. When replacing the glass panels, only use parts supplied by Clarke International. The dark panel is a certified, optical glass and should not be exchanged for any other type.

5. Secure the handle in position using the plastic nuts provided.

The handle will be on the inside of the shield.

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PREPARATION FOR USE

FITTING THE WHEELS 1. Fit two e-clips onto the axle in the

positions shown.

2. Slide the axle into the wheel supports.

3. Fit two e-clips onto the opposite end of the axle in the same positions.

4. Remove the cap on the wheel and slide the wheel onto the axle.

5. Secure the wheel using an e-clip.

6. Replace the wheel cap.

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FITTING THE HANDLE 1. Fit the 2 handles together and

secure to the top of the welder using the screws and washers supplied.

MOUNTING THE WELDING WIRE SPOOL

NOTE: Spools of welding wire are available from your Clarke dealer.

1. Open the side panel, by pushing the latch down and allowing the side panel to drop down.

2. Remove the locking knob and retaining disc.

3. Place the spool of welding wire (not supplied) over the spindle so that it sits on the spring.

Do not release the tension on the wire as it will unravel causing feeding problems later.

The wire will feed off the spool anticlockwise from the bottom of the reel.

The spool must be fitted with the correct orientation otherwise it will not feed correctly.

Warning: Ensure that the welder is not connected to the mains supply.

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SETTING THE DRIVE ROLLER SIZE 1. Loosen the tensioning knob and

pivot it towards you.

2. Lift up the arm.

3. Take hold of the triangular knob on the drive roller cover and rotate it 90anticlockwise to release it.

4. Pull the roller retainer off the drive spindle to reveal the roller.

5. Pull the roller off the drive spindle.

The groove size is stamped on the corresponding side of the roller. Select the groove size according to the size of the wire you are using and put the roller back on the spindle with your chosen side facing you.

6. Replace the drive roller cover back onto the drive spindle with the opening facing right.

7. Ensure that the flanges at the base of the drive roller cover, seat fully into the circular recess in the main moulding and then rotate the drive roller cover through 90 to lock it in place.

THREADING THE WIRE IMPORTANT: Do not release the tension on the wire as it will unravel causing feeding problems later.

1. Pull out the end of the wire from the spool, taking care not to release the tension.

We recommend you cut off and discard the first 10 cm of wire from the spool to avoid burrs and then straighten the next 15 cm of wire to help with feeding.

2. Loosen the tensioning knob and pivot it towards you.

3. Lift up the arm.

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4. Pass the wire through the guide, over the drive roller and into the torch liner.

Push about 10-15 cm into the torch liner.

5. Lower the arm and replace the tensioning knob.

Tighten the tensioning knob sufficiently to hold firmly, but do not fully tighten.

NOTE: Correct tension will allow the wire to feed into the torch liner smoothly, but will allow the drive roller to slip in the event of a blockage.

6. Close the side panel of the welder.

7. Pull off the torch shroud with a twisting movement, then unscrew the contact tip.

8. Connect the welder to the power supply and switch ON.

9. Set the WIRE FEED rotary control on the front panel to position 7 or 8 and squeeze the trigger on the torch body.

The wire will feed through the hose until it appears at the torch tip.

Ensuring the hose is free from kinks during this process will assist the wire in its passage through the hose liner.

10. Release the trigger and switch off the welder and disconnect the machine from the mains supply.

11. Refit the appropriate size contact tip (0.9 mm, for no gas welding is supplied fitted) to suit your wire. then replace the shroud.

A spare 0.8 mm tip is supplied loose and should be used when using 0.6/0.8 mm mild steel solid wire.

12. Trim the welding wire so that it protrudes no more than 5 mm from the end of the contact tip.

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MIG WELDING PRINCIPLES

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 that is 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, Two types are available from Clarke International.

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.

GAS/NO-GAS SELECTION

The welder can be configured to weld, with or without a gas supply according to the type of welding wire being used.

Mild Steel solid core (with gas)

Flux Cored (no gas)

Carbon Dioxide (CO2) For Mild Steel Part No. 6000642

CO2/Argon Mix For thin sheet metal-Mild Steel / Stainless Steel

Part No. 6000660

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WELDING WITHOUT GAS 1. If using 0.9mm flux cored wire,

connect the terminal as shown.

The earth cable (Thicker Lead) should be connected to the positive (Red) terminal.

The cable from torch (Thinner Lead) should be connected to the Negative (Black) terminal.

WELDING WITH GAS 1. If using solid cored wire 0.6/0.8mm

wire, connect the terminal as shown.

The earth cable (Thicker Lead) should be connected to the negative (Black) terminal.

The cable from torch (Thinner Lead) should be connected to the positive (Red) terminal.

CONNECTING THE GAS SUPPLY

2. Connect a bottled gas supply to the small tube at the back of the welder.

OPERATING THE WELDER

PREPARING THE WORKPIECE The area being welded should be perfectly clean. Any coating, plating or corrosion must be removed, otherwise a good weld will be impossible to achieve.

Attach the earth clamp to the workpiece as close to the point of weld as possible, without it being intrusive.

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OPERATION

1. With the welding current set and the wire trimmed, set the wire feed control to 6.

2. Plug the machine into the mains supply and switch on.

3. Cover your face with a welding mask or welding helmet.

This is essential.

4. Lower the torch to the workpiece with one hand and approach the work with the torch tip at an angle of about 35o and pull the torch trigger fully.

As the wire touches the workpiece an arc will be struck.

5. In order to produce a satisfactory weld, the controls may be fine tuned as required. This will come with practice.

NOTE: MIG welding is an acquired skill. It is strongly advised that, if you are not fully familiar with this type of welding, you practice on a piece of material with the same characteristics as your workpiece until you are satisfied with the result, and you have fine tuned your welder to produce a satisfactory weld.

NOTE: One of the problems experienced with novice welders is the welding wire sticking to the contact tip. This is as a result of the wire feed speed being too slow. It is always better therefore to start with too high a speed and back off slightly to avoid the possibility of the wire welding itself to the tip. This is the reason position 6 is recommended for start up.

NOTE: The Wire Feed control is for fine tuning the wire speed. The speed of wire delivery will increase automatically as the current is increased. Therefore, once the ideal speed is achieved by fine tuning, it should not be necessary to adjust this control when the welding current is changed.

NOTE: Listen to the sound made. An irregular crackling sound denotes too high a wire speed. Decrease the speed until a regular, strong buzzing sound is heard.

CAUTION: THE DUTY CYCLE MUST BE ADHERED IN ORDER TO PREVENT THE THERMAL OVERLOAD PROTECTION FROM ACTIVATING

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THERMAL OVERLOAD The Thermal Overload shuts off the welder when it becomes too hot, due to the duty cycle being exceeded. This is to prevent any damage to the welder.

When this occurs, the warning lamp shown will light up. Allow the welder to cool until the amber light extinguishes before resuming work.

DUTY CYCLE These welders are covered by regulations EN 60974-1 and EN 50199, where the duty cycle is expressed as a percentage of time the machine may be used in a given period for a specified welding current.

Using the example shown, which is an illustration of the data plate;-

e.g. when welding at 40 amps the machine may be used for 6 minutes (60%) in any 10 minute period.

WELDING SUGGESTIONS

Try to maintain the tip of the nozzle at an angle of approx. 45O and at a constant distance of approx 5-7mm from the workpiece.

Try to maintain a constant speed of movement with the torch.

Do not weld in windy conditions or in an area where ventilation is a problem, or where air flow fluctuates.

ALWAYS keep the wire and nozzle clean...NEVER use rusted wire.

Avoid sharp bends or kinks in the welding hose.

Whenever possible, clean out the wire liner with compressed air when replacing the wire spool.

Periodically remove the dust using LOW PRESSURE compressed air within the casing. Adequate heat dissipation is essential during the welders operation.

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MAINTENANCE

Frequency of maintenance operations depends on the operating conditions, how intensively the welder is used and how clean or dirty the welding site is (aggressive environments etc).

Always inspect the earth cable and torch hose before use, to ensure they are in perfect condition and that the earth clamp is clean and secured correctly to the cable.

Check the hose for security and damage.

As a general rule the power supply should be inspected at least annually. Consult your CLARKE dealer for advice if necessary.

Wire feed unit:

The feed roller wire guide plays an important part in obtaining consistent results. Clean the rollers weekly, especially the feed roller groove, removing all dust deposits.

Torch:

Protect the torch hose assembly from mechanical wear. Clean the liner from the machine forwards by using compressed air. If the liner is blocked it must be replaced.

Contact tip:

The contact tip is a consumable item and must be replaced when the bore becomes enlarged or oval. The contact tip MUST be kept free from spatter to ensure an unimpeded flow of gas.

To keep the contact tip free from spatter, we recommend the use of anti- spatter spray (6000715) available from your CLARKE dealer.

Torch shroud:

The torch shroud must also be kept clean and free from spatter. Build-up of spatter inside the gas cup can cause a short circuit at the contact tip which will result in expensive machine repairs.

WARNING: ELECTRICITY CAN KILL - NEVER TOUCH LIVE ELECTRICAL COMPONENTS.

WARNING: DISCONNECT THE POWER SUPPLY BEFORE ALL INSPECTIONS AND MAINTENANCE OPERATIONS. BEWARE HOT SURFACES.

WARNING: ALWAYS LET THE WELDER COOL DOWN BEFORE ACCESSING INTERNAL COMPONENTS.

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TROUBLESHOOTING

Your CLARKE MIG Welder has been designed to give long and trouble free service. If however, having followed the instructions in this booklet carefully you still encounter problems, the following points should help identify and resolve them.

PROBLEM CAUSE SOLUTION

No response from welder.

Check fuses and mains lead.

Replace fuses as necessary. If problem persists return welder to your local dealer.

Check fuse size.

Welder does not feed wire.

Feed motor has malfunctioned.

Return welder to your local dealer.

Feed motor running but no wire being fed from welder tip.

Insufficient Feed Roller pressure.

Increase roller pressure.

Burr on end of wire. Re-cut wire square with no burr.

Liner blocked or damaged. Clean with compressed air or replace liner.

Inferior wire Use only good clean wire.

Roller worn out. Replace roller.

Wire welds itself to tip.

Wire feed speed too low. Unscrew tip, cut wire and fit new tip. Increase wire speed before operating again.

Wrong size tip. Fit correct size tip.

Wire feeds into birds nest tangle.

Wire welded to tip. As above plus reduce feed roller pressure.

Wire liner damaged preventing smooth operation.

Renew wire liner.

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If you have any problems which cannot be resolved by reference to the above, or if you require spare parts for your welder please contact your local Clarke dealer.

Loose coils of wire tangle around wire drum inside machine.

Locking knob too slack. Tighten Locking Knob slightly. Do not over-tighten.

Erratic wire feed.

Tensioning Knob too tight. Loosen Tensioning Knob slightly.

Tension roller worn. Check and replace if necessary.

Insufficient pressure on tension roller.

Increase pressure on tension roller Caution: Do not over-tighten.

Wire dirty, rusty, damp or bent.

Re-cut wire and ensure it is clean.

Liner partially blocked. Clean with compressed air.

Poor quality welds.

Insufficient gas at weld area.

Check that gas is not being blown away by draughts and if so move to a more sheltered work area. If no increase gas supply.

Rusty, painted, damp, oil or greasy workpiece.

Ensure workpiece is clean and dry.

Rusty/dirty wire. Ensure wire is clean and dry.

Poor earth contact. Check earth clamp/workpiece connection.

Welder cuts out whilst in use.

Duty cycle exceeded (auto cut-out operates).

Allow welder to cool 15-30 mins before continuing. Note: If duty cycle is continually exceeded, damage to the welder may result and welder output is probably too small for application.

PROBLEM CAUSE SOLUTION

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