DWE4357 - Sander DEWALT - Free user manual and instructions

USER MANUAL DWE4357 DEWALT

Cutting off Vibration emission value a h,CO = m/s

The vibration emission level given in this information sheet has been measured in accordance with a standardised test given in EN62841 and may be used to compare one tool with another. It may be used for a preliminary assessment ofexposure.

WARNING: The declared vibration emission level

represents the main applications of the tool. However if the tool is used for different applications, with different accessories or poorly maintained, the vibration emission English (original instructions)

Congratulations! You have chosen a DeWALT tool. Years of experience, thorough product development and innovation make DeWALT one of the most reliable partners for professional power toolusers. Technical Data

Rated no‑load speed min

Grinding wheel thickness (max) mm

• weight includes side handle and guard Noise and vibration total values (triax vector sum) according to EN62841‑2‑3:

(emission sound pressure level) dB(A) 89 89 89

(sound power level) dB(A) 97 97 97 K (uncertainty for the given sound level) dB(A) 3 3 3 Surface grinding Vibration emission value a h,AG

Uncertainty K = m/s² 1.5 1.5 1.538 EnGLIsh Identify additional safety measures to protect the operator from the effects of vibration such as: maintain the tool and the accessories, keep the hands warm, organisation of workpatterns.

CAUTION: Working with the wire brush or the abrasive cutting can lead to different vibration levels!

WARNING : Grinding thin sheets of metal or other easily

vibrating structures with a large surface can result in a total noise emission much higher (up to 15dB) than the declared noise emission values. Such workpieces should as far as possible be prevented from emitting sound by suitable measures such as the application of heavy flexible damping mats. The increased noise emission is also to be considered for both the risk assessment of noise exposure and selecting adequate hearingprotection. EC‑Declaration of Conformity Machinery Directive Small Angle Grinders

DWE4347, DWE4357, DWE4369

DeWALT declares that these products described under Technical Data are in compliance with: 2006/42/EC, EN62841‑1:2015+A11:2022, EN62841‑2‑3:2021 +A11:2021. These products also comply with Directive 2014/30/EU and 2011/65/EU. For more information, please contact DeWALT at the following address or refer to the back of themanual. The undersigned is responsible for compilation of the technical file and makes this declaration on behalf ofDeWALT. Vice President of Engineering, PTE‑Europe Director Engineering DeWALT, Richard‑Klinger‑Straße 11, 65510, Idstein, Germany

DECLARATION OF CONFORMITY

DeWALT declares that these products described under “technical data” are in compliance with: EN62841‑1:2015+A11:2022, EN62841‑2‑3:2021 +A11:2021. These products conform to the following UK Regulations The Supply of Machinery (Safety) Regulations, 2008, S.I. 2008/1597 (asamended). The Radio Equipment Regulations 2017, S.I. 2017/1206 (asamended) The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012, S.I. 2012/3032 (as amended). For more information, please contact DeWALT at the following address or refer to the back of the manual. The undersigned is responsible for compilation of the technical file and makes this declaration on behalf of DeWALT. Karl Evans Vice President Professional Power Tools EANZ GTS 270Bath Road, Slough SL1 4DX England

WARNING: To reduce the risk of injury, read the

instructionmanual. Definitions: Safety Guidelines The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to thesesymbols.

DANGER: Indicates an imminently hazardous

situation which, if not avoided, will result in death or seriousinjury.

WARNING: Indicates a potentially hazardous situation

which, if not avoided, could result in death or seriousinjury.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderateinjury. NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in propertydamage.

Denotes risk of electricshock.

Denotes risk offire. General Power Tool Safety Warnings

WARNING: Read all safety warnings, instructions,

illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or seriousinjury.

EnGLIsh The term “power tool” in the warnings refers to your mains‑operated (corded) power tool or battery‑operated (cordless) powertool.

a ) Keep work area clean and well lit. Cluttered or dark areas inviteaccidents. b ) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust orfumes. c ) Keep children and bystanders away while operating a power tool. Distractions can cause you to losecontrol.

2) Electrical Safety

a ) Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electricshock. b ) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed orgrounded. c ) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electricshock. d ) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electricshock. e ) When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electricshock. f ) If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electricshock.

a ) Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personalinjury. b ) Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non‑skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personalinjuries. c ) Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invitesaccidents. d ) Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personalinjury. e ) Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpectedsituations. f ) Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in movingparts. g ) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust‑relatedhazards. h ) Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of asecond.

4) Power Tool Use and Care

a ) Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it wasdesigned. b ) Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must berepaired. c ) Disconnect the plug from the power source and/ or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power toolaccidentally. d ) Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrainedusers. e ) Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained powertools. f ) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier tocontrol. g ) Use the power tool, accessories and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardoussituation. h ) Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpectedsituations.

a ) Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool ismaintained.40 EnGLIsh

SAFETY INSTRUCTIONS FOR ALL OPERATIONS

Safety Warnings Common for Grinding, Sanding, Wire Brushing, or Cutting‑Off Operations: a ) This power tool is intended to function as a grinder, sander, wire brush, or cut-off tool. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or seriousinjury. b ) Operations such as polishing are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personalinjury. c ) Do not convert this power tool to operate in a way which is not specifically designed and specified by the tool manufacturer. Such a conversion may result in a loss of control and cause serious personalinjury. d ) Do not use accessories which are not specifically designed and specified by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safeoperation. e ) The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and flyapart. f ) The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded orcontrolled. g ) The dimensions of the accessory mounting must fit the dimensions of the mounting hardware of the power tool. Accessories that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss ofcontrol. h ) Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this testtime. i ) Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various applications. The dust mask or respirator must be capable of filtrating particles generated by the particular application. Prolonged exposure to high intensity noise may cause hearingloss. j ) Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and cause injury beyond immediate area ofoperation. k ) Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electricshock. l ) Position the cord clear of the spinning accessory. If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinningaccessory. m ) Never lay the power tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the power tool out of yourcontrol. n ) Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into yourbody. o ) Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electricalhazards. p ) Do not operate the power tool near flammable materials. Sparks could ignite thesematerials. q ) Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution orshock. Kickback and Related Warnings: Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of thebinding. For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under theseconditions. Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as givenbelow. a ) Maintain a firm grip with both hands on the power tool and position your body and arms to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can41 EnGLIsh control torque reactions or kickback forces, if proper precautions aretaken. b ) Never place your hand near the rotating accessory. Accessory may kickback over yourhand. c ) Do not position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point ofsnagging. d ) Use special care when working corners, sharp edges, etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control orkickback. e ) Do not attach a saw chain woodcarving blade, segmented diamond wheel with a peripheral gap greater than 10mm or toothed saw blade. Such blades create frequent kickback and loss ofcontrol. Safety Warnings Specific for Grinding and Cutting‑Off Operations: a ) Use only wheel types that are specified for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and areunsafe. b ) The grinding surface of center depressed wheels must be mounted below the plane of the guard lip. An improperly mounted wheel that projects through the plane of the guard lip cannot be adequatelyprotected. c ) The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed towards the operator. The guard helps to protect the operator from broken wheel fragments, accidental contact with wheel and sparks that could igniteclothing. d ) Wheels must be used only for specified applications. For example: do not grind with the side of cut-off wheel. Abrasive cut‑off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them toshatter. e ) Always use undamaged wheel flanges that are of correct size and shape for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut‑off wheels may be different from grinding wheelflanges. f ) Do not use worn down wheels from larger power tools. A wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and mayburst. g ) When using dual purpose wheels always use the correct guard for the application being performed. Failure to use the correct guard may not provide the desired level of guarding, which could lead to seriousinjury. Additional Safety Warnings Specific for Cutting‑Off Operations: a ) Do not “jam” the cut-off wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheelbreakage. b ) Do not position your body in line with and behind the rotating wheel. When the wheel, at the point of operation, is moving away from your body, the possible kickback may propel the spinning wheel and the power tool directly atyou. c ) When the wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold it motionless until the wheel comes to a complete stop. Never attempt to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take corrective action to eliminate the cause of wheelbinding. d ) Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully re-enter the cut. The wheel may bind, walk up or kickback if the power tool is restarted in theworkpiece. e ) Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback. Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of thewheel. f ) Use extra caution when making a “pocket cut” into existing walls or other blind areas. The protruding wheel may cut gas or water pipes, electrical wiring or objects that can causekickback. g ) Do not attempt to do curved cutting. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage, which can lead to seriousinjury. Safety Warnings Specific for Sanding Operations: a ) Use proper sized sanding disc paper. Follow manufacturer's recommendations, when selecting sanding paper. Larger sanding paper extending too far beyond the sanding pad presents a laceration hazard and may cause snagging, tearing of the disc orkickback. Safety Warnings Specific for Wire Brushing Operations: a ) Be aware that wire bristles are thrown by the brush even during ordinary operation. Do not overstress the wires by applying excessive load to the brush. The wire bristles can easily penetrate light clothing and/orskin. b ) If the use of a guard is specified for wire brushing, do not allow any interference of the wire wheel or brush42 EnGLIsh with the guard. Wire wheel or brush may expand in diameter due to work load and centrifugalforces. Additional Safety Rules for Grinders a ) Do not use Type 11(flaring cup) wheels on this tool. Using inappropriate accessories can result ininjury. b ) Always use side handle. Tighten the handle securely. The side handle should always be used to maintain control of the tool at alltimes. Residual Risks In spite of the application of the relevant safety regulations and the implementation of safety devices, certain residual risks cannot be avoided. These are:

• Impairment ofhearing.

• Risk of personal injury due to flyingparticles.

• Risk of burns due to accessories becoming hot duringoperation.

• Risk of personal injury due to prolongeduse.

• Risk of dust from hazardoussubstances. Electrical Safety The electric motor has been designed for one voltage only. Always check that the power supply corresponds to the voltage on the ratingplate. Your DeWALT tool is double insulated in accordance with EN62841; therefore no earth wire isrequired. If the supply cord is damaged, it must be replaced only by DeWALT or an authorised serviceorganisation.

WARNING: We recommend the use of a residual current

device with a residual current rating of 30mA orless. Using an Extension Cable If an extension cable is required, use an approved 3–core extension cable suitable for the power input of this tool (see Technical Data). The minimum conductor size is 1.5 mm

• Check for damage to the tool, parts or accessories which may have occurred duringtransport.

• Take the time to thoroughly read and understand this manual prior tooperation. Markings on Tool The following pictograms are shown on the tool: Read instruction manual beforeuse. Wear earprotection. Wear eyeprotection. Always operate with twohands. Do not use the guard for cut‑offoperations. Electronicbrake. Date Code Position (Fig. D) The date code

, which also includes the year of manufacture, is printed onto the gearcase. Example: 2023XX XX Year and Week of Manufacture Description (Fig. A, B)

WARNING: Never modify the power tool or any part of it.

Damage or personal injury couldresult.

LED Indicator Intended Use Your heavy‑duty small angle grinder has been designed for professional grinding, sanding, wire brushing and cuttingapplications. DO nOT use grinding wheels other than centre depressed wheels and flapdiscs.

DANGER: Do not use for wood cutting or woodcarving.

Do not use toothed blades of any kind. Serious injury canresult. DO nOT use under wet conditions or in the presence of flammable liquids orgases. Your heavy‑duty angle grinder is a professional powertool. DO nOT let children come into contact with the tool. Supervision is required when inexperienced operators use thistool.43 ENGLISH

• Young children and the infirm. This appliance is not intended for use by young children or infirm persons without supervision.

• This product is not intended for use by persons (including children) suffering from diminished physical, sensory or mental abilities; lack of experience, knowledge or skills unless they are supervised by a person responsible for their safety. Children should never be left alone with thisproduct. Features Anti‑vibration Side Handle DWE4369 The anti‑vibration side handle offers added comfort by absorbing the vibrations caused by thetool. No‑Volt The No‑volt function stops the grinder restarting without the switch being cycled if there is a break in the powersupply. E‑Clutch This unit is equipped with an E‑Clutch (Electronic Clutch), which in the event of a stall or wheel pinch, the unit will be shut off to reduce the reaction torque to the user. The switch needs to be cycled (turned on and off) to restarttool. Brake When the slider switch is released the motor immediately turns off and electronically brakes stopping the accessoryquickly. Kickback Brake™ When a severe pinch, stall, or bind‑up event is sensed the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder, and shut the grinder off. The switch needs to be cycled (turned off and then on) to restarttool. Constant Clutch™ When overloaded or stalled the motor torque is reduced. If load is reduced the torque and RPM will increase. If the tool is stalled for an extended amount of time it will shut‑off and require the switch to cycle torestart. Electronic Soft Start This feature limits the initial start up momentum, allowing the speed to build up gradually over a 1secondperiod. LED Indicator (Fig. A) The LED indicator

will remain lit green during normal activity, or blink in a pattern of red light to alert you a tool protection feature has been activated. Refer to the LED Guide at the back of this manual for explanations of blinkpatterns.

ASSEMBLY AND ADJUSTMENTS

WARNING: To reduce the risk of serious personal

injury, turn tool off and disconnect tool from power source before making any adjustments or removing/ installing attachments or accessories. Be sure the trigger switch is in the OFF position. An accidental start‑up can causeinjury. Attaching Side Handle (Fig. B)

WARNING: Before using the tool, check that the handle is

tightenedsecurely. Screw the side handle

tightly into one of the holes on either side of the gear case. The side handle should always be used to maintain control of the tool at alltimes. Guards

CAUTION: Guards must be used with all grinding wheels, cutting wheels, sanding flap discs, wire brushes, and wire wheels. Refer to Figure A to see guards provided with the unit. Some applications may require purchasing the correct guard from your local dealer or authorized servicecentre.

CAUTION: When using a Type A (cut‑off) wheel guard for facial grinding, the wheel guard may interfere with the workpiece causing poorcontrol.

CAUTION: When using a Type B (grinding) wheel guard for cutting‑off operations with bonded abrasive wheels, there is an increased risk of exposure to emitted sparks and particles, as well as exposure to wheel fragments in the event of wheelburst.

CAUTION: When using a Type A (cut‑off), Type B (grinding) wheel guard for cutting‑off and facial operations in concrete or masonry, there is an increased risk of exposure to dust and loss of control resulting inkickback.

CAUTION: When using a Type A (cut‑off), TypeB (grinding) wheel guard with a wheel‑type wire brush with a thickness greater than the maximum thickness as specified in Technical Data, the wires may catch on the guard leading to breaking ofwires. NOTE: Edge grinding and cutting can be performed with Type 27wheels designed and specified for this purpose; 6mm thick wheels are designed for surface grinding while thinner Type 27wheels need to be examined for the manufacturer's label to see if they can be used for surface grinding or only edge grinding/cutting. A Type A (cut‑off) wheel guard must be used for any wheel where surface grinding is forbidden. A Type A (cut‑off) (previously called type 1/41) wheel guard must be used for for any dual purpose (combined grinding and cutting‑off abrasive) wheels. Cutting can also be performed by using a Type1/41 wheel and a Type A cut‑off wheel guard previously called Type 1/41guard. NOTE: See the Accessory and Guard Applications chart to select the proper guard / accessorycombination. Adjusting and Mounting Guard (Fig. C, D)

CAUTION: Turn unit off and unplug the tool before making any adjustments or removing or installing attachments oraccessories.

CAUTION: BEFORE operating the tool, identify which guard adjustment option your tool is set to.44 ENGLISH Adjustment Options For guard adjustment, the guard release lever

engages one of the alignment holes

on the guard collar using a ratcheting feature. Your grinder offers two options for thisadjustment.

: In this position the engaging face is slanted and will ride over to the next alignment hole when guard is rotated in a clockwise direction (spindle facing user) but self‑locks in the anti‑clockwisedirection.

: In this position the engaging face is straight and squared off. It will NOT ride over to the next alignment hole unless guard release lever is pressed and held while simultaneously rotating the guard in either a clockwise or anti‑clockwise direction (spindle facing user). One‑Touch

Setting Guard Adjustment Options To adjust the guard release lever

for desired adjustmentoption:

2. Remove the guard release lever taking note of the spring

position. Choose the end of the lever for the desired adjustment option. One‑touch will use the slanted end of the lever

to engage the alignment holes

on the guard collar. Two‑touch will use the squaredend to engage the alignment holes

. Ensure the lever is in proper contact with thespring.

4. Replace screw and torque to 2.0–3.0Nm. Ensure proper

installation with spring return function by depressing guard release lever

Mounting Guard (Fig.D)

CAUTION: Prior to mounting guard, ensure the screw, lever, and spring are fitted correctly before mounting theguard.

1. With the spindle facing the operator, press and hold the

on the guard with the slots

3. Push the guard down until the guard lugs engage and

rotate them in the groove on the gear case hub. Release the guard releaselever.

: Rotate the guard clockwise into the desired working position. Press and hold the guard release lever

to rotate the guard in the anti‑clockwisedirection. Two-touch

: Press and hold the guard release lever

Rotate the guard clockwise or anti‑clockwise into the desired working position. NOTE: The guard body should be positioned between the spindle and the operator to provide maximum operatorprotection. The guard release lever should snap into one of the alignment holes

on the guard collar. This ensures that the guard issecure.

5. To remove the guard, follow steps 1–3 of these instructions

inreverse. Flanges and Wheels Mounting Non‑Hubbed Wheels (Fig. E)

WARNING: Failure to properly seat the flange/clamp nut/

wheel could result in serious injury (or damage to the tool orwheel).

CAUTION: Included flanges must be used with Type 27grinding wheels and Type41and Type 42cutting wheels. See the Accessory and Guard Applications chart for moreinformation.

WARNING: A closed, two‑sided cutting wheel guard is

re quired when using cutting wheels.

WARNING: Use of a damaged flange or guard or fail ure

to use proper flange and guard can re sult in injury due to wheel breakage and wheel contact. See the Accessory and Guard Applications chart for moreinformation.

1. Place the tool on a table, guardup.

2. Install the unthreaded backing flange

with the raised centre (pilot) facing the wheel.

against the backing flange, centring the wheel on the raised centre (pilot) of the backingflange.

4. While depressing the spindle lock button and with the

hex depressions facing away from the wheel, thread the clampnut

on spindle so that the lugs engage the two slots in thespindle.

5. While depressing the spindle lock button, tighten the

loosen the clampnut. Mounting Sanding Backing Pads (Fig. B, F) NOTE: Use of a guard with sanding discs that use backing pads, often called fiber resin discs, is not required. Since a guard is not required for these accessories, the guard may or may not fit correctly ifused.

WARNING: Failure to properly seat the flange/clamp nut/

wheel could result in serious injury (or damage to the tool orwheel).

WARNING: Proper guard must be reinstalled for grinding

wheel, cutting wheel, sanding flap disc, wire brush or wire wheel applications after sanding applications arecomplete.

1. Place or appropriately thread backing pad

2. Place the sanding disc

spindle, piloting the raised hub on the clamp nut into the centre of san ding disc and backingpad.45 EnGLIsh

4. Tighten the clamp nut by hand. Then depress the spindle

lock button while turning the sanding disc until the sanding disc and clamp nut aresnug.

5. To remove the wheel, grasp and turn the backing pad and

sanding pad while depressing the spindle lockbutton. Mounting Wire Cup Brushes and Wire Wheels (Fig. A, B)

WARNING: Failure to properly seat the flange/clamp nut/

wheel could result in serious injury (or damage to the tool orwheel).

CAUTION: To reduce the risk of personal injury, wear work gloves when handling wire brushes and wheels. They can becomesharp.

CAUTION: To reduce the risk of damage to the tool, wheel or brush must not touch guard when mounted or while in use. Undetectable damage could occur to the accessory, causing wires to fragment from accessory wheel orcup. Wire cup brushes or wire wheels install directly on the threaded spindle without the use of flanges. Use only wire brushes or wheels provided with a M14 threaded hub. These accessories are available at extra cost from your local dealer or authorised servicecentre.

1. Place the tool on a table, guardup.

2. Thread the wheel on the spindle byhand.

and use a wrench on the hub of the wire wheel or brush to tighten thewheel.

4. To remove the wheel, reverse the aboveprocedure.

NOTICE: To reduce the risk of damage to the tool, properly seat the wheel hub before turning the toolon. Prior to Operation

• Install the guard and appropriate disc or wheel. Do not use excessively worn discs orwheels.

• Be sure the inner and outer flange are mounted correctly. Follow the instructions given in the Accessory and Guard Applicationschart.

• Make sure the disc or wheel rotates in the direction of the arrows on the accessory and thetool.

• Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no‑load speed for one minute. Damaged accessories will normally break apart during this testtime. OPERATION Instructions for Use

WARNING: Always observe the safety instructions and

applicableregulations.

WARNING: To reduce the risk of serious personal

injury, turn tool off and disconnect tool from power source before making any adjustments or removing/ installing attachments or accessories. Be sure the trigger switch is in the OFF position. An accidental start‑up can causeinjury.

• Ensure all materials to be ground or cut are secured inplace.

• Secure and support the workpiece. Use clamps or a vise to hold and support the workpiece to a stable platform. It is important to clamp and support the workpiece securely to prevent movement of the workpiece and loss of control. Movement of the workpiece or loss of control may create a hazard and cause personalinjury.

• Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback. Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of thewheel.

• Always wear regular working gloves while operating thistool.

• The gear becomes very hot duringuse.

• Apply only a gentle pressure to the tool. Do not exert side pressure on thedisc.

• Always install the guard and appropriate disc or wheel. Do not use excessively worn disc orwheel.

• Be sure the inner and outer flange are mountedcorrectly.

• Make sure the disc or wheel rotates in the direction of the arrows on the accessory and thetool.

• Avoid overloading. Should the tool become hot, let it run a few minutes under no load condition to cool the accessory. Do not touch accessories before they have cooled. The discs become very hot duringuse.

• Never work with the grinding cup without a suitable protection guard inplace.

• Do not use the power tool with a cut‑offstand.

• Never use blotters together with bonded abrasiveproducts.

• Be aware, the wheel continues to rotate after the tool is switchedoff. Proper Hand Position (Fig. G)

WARNING: To reduce the risk of serious personal injury,

WARNING: To reduce the risk of serious personal

injury, ALWAYS hold securely in anticipation of a suddenreaction. Proper hand position requires one hand on the side handle

with the other hand on the body of the tool, as shown in FigureG.46 ENGLISH Variable Speed Dial (Fig. A) DWE4357, DWE4369

WARNING: Regardless of the speed setting, the rated

speed of the accessory must be at least equal to the maximum speed marked on the powertool. The variable speed dial offers added tool control and enables the tool to be used at optimum conditions to suit the accessory andmaterial.

to the desired level. Turn the dial upward for higher speed and downwards for lowerspeed. Slider Switch (Fig. A)

CAUTION: Hold the side handle and body of the tool firmly to maintain control of the tool at start up and during use and until the wheel or accessory stops rotating. Make sure the wheel has come to a complete stop be fore laying the tooldown. NOTE: To reduce unexpected tool movement, do not switch the tool on or off while under load conditions. Allow the grinder to run up to full speed before touching the work surface. Lift the tool from the surface before turning the tool off. Allow the tool to stop rotating before putting itdown. To start the tool, slide the ON/OFF slider switch

toward the front of the tool. To stop the tool, release the ON/OFF sliderswitch. For continuous operation, slide the switch toward the front of the tool and press the forward part of the switch inward. To stop the tool while operating in continuous mode, press the rear part of the slider switch andrelease. Spindle Lock (Fig. B) The spindle lock

is provided to prevent the spindle from rotating when installing or removing wheels. Operate the spindle lock only when the tool is turned off, unplugged from the power supply, and has come to a completestop. NOTICE: To reduce the risk of damage to the tool, do not engage the spindle lock while the tool is operating. Damage to the tool will result and attached accessory may spin off possibly resulting ininjury. To engage the lock, depress the spindle lock button and rotate the spindle until you are unable to rotate the spindlefurther. Surface Grinding, Sanding and Wire Brushing

CAUTION: Always use the correct guard per the instructions in thismanual.

WARNING: Metal dust build-up. Extensive use of flap

discs in metal applications can result in the increased potential for electric shock. To reduce this risk, insert an RCD before use and clean the ventilation slots daily by blowing dry compressed air into the ventilation slots in accordance with the below maintenanceinstructions. To perform work on the surface of a workpiece:

1. Allow the tool to reach full speed before touching the tool

2. Apply minimum pressure to the work surface, allowing

the tool to operate at high speed. Material removal rate is greatest when the tool operates at highspeed. Angle

3. Maintain an appropriate angle between the tool and work

surface. Refer to the chart according to particularfunction. Function Angle Grinding 20˚‑30˚ Sanding with Flap Disc 5˚‑10˚ Sanding with Backing Pad 5˚‑15˚ Wire Brushing 5˚‑10˚

4. Maintain contact between the edge of the wheel and the

worksurface. ‑ If grinding, sanding with flap discs or wire brushing move the tool continuously in a forward and back motion to avoid creating gouges in the worksurface. ‑ If sanding with a backing pad, move the tool constantly in a straight line to prevent burning and swirling of worksurface. NOTE: Allowing the tool to rest on the work surface without moving will damage the workpiece.

5. Remove the tool from work surface before turning tool off.

Allow the tool to stop rotating before laying itdown.

CAUTION: Use extra care when working over an edge, as a sudden sharp movement of grinder may beexperienced. Precautions To Take When Working on a Painted Workpiece

1. Sanding or wire brushing of lead based paint is NOT

RECOMMENDED due to the difficulty of controlling the contaminated dust. The greatest danger of lead poisoning is to children and pregnantwomen.

2. Since it is difficult to identify whether or not a paint contains

lead without a chemical analysis, we recommend the following precautions when sanding any paint: Personal Safety

1. No children or pregnant women should enter the work area

where the paint sanding or wire brushing is being done until all clean up iscompleted.

2. A dust mask or respirator should be worn by all persons

entering the work area. The filter should be replaced daily or whenever the wearer has difficultybreathing. NOTE: Only those dust masks suitable for working with lead paint dust and fumes should be used. Ordinary painting masks do not offer this protection. See your local hardware dealer for the proper N.I.O.S.H. approvedmask.

3. NO EATING, DRINKING or SMOKING should be done in the

work area to prevent ingesting contaminated paint particles. Workers should wash and clean up BEFORE eating, drinking47 ENGLISH or smoking. Articles of food, drink, or smoking should not be left in the work area where dust would settle onthem. Environmental Safety

1. Paint should be removed in such a manner as to minimize

the amount of dustgenerated.

2. Areas where paint removal is occurring should be sealed

with plastic sheeting of 4milsthickness.

3. Sanding should be done in a manner to reduce tracking of

paint dust outside the workarea. Cleaning and Disposal

1. All surfaces in the work area should be vacuumed and

thoroughly cleaned daily for the duration of the sanding project. Vacuum filter bags should be changedfrequently.

2. Plastic drop cloths should be gathered up and disposed

of along with any dust chips or other removal debris. They should be placed in sealed refuse receptacles and disposed of through regular trash pick‑upprocedures. During clean up, children and pregnant women should be kept away from the immediate workarea.

3. All toys, washable furniture and utensils used by children

should be washed thoroughly before being usedagain. Edge Grinding and Cutting

WARNING: Do not use edge grinding/cutting wheels for

surface grinding applications because these wheels are not designed for side pressures encountered with surface grinding. Wheel breakage and injury mayresult.

CAUTION: Wheels used for edge grinding and cutting may break or kick back if they bend or twist while the tool is being used. In all edge grinding/cutting operations, the open side of the guard must be positioned away from theoperator. NOTICE: Edge grinding/cutting with a Type27wheel must be limited to shallow cutting and notching—less than 13mm in depth when the wheel is new. Reduce the depth of cutting/notching equal to the reduction of the wheel radius as it wears down. Refer to the Accessory and Guard Applications chart for more information. Edge grinding/cutting with a Type 41wheel requires usage of a Type Aguard.

1. Allow the tool to reach full speed before touching the tool

2. Apply minimum pressure to the work surface, allowing

the tool to operate at high speed. Grinding/cutting rate is greatest when the tool operates at highspeed.

3. Position yourself so that the open‑underside of the wheel is

facing away fromyou.

4. Once a cut is begun and a notch is established in the

workpiece, do not change the angle of the cut. Changing the angle will cause the wheel to bend and may cause wheel breakage. Edge grinding wheels are not designed to withstand side pressures caused bybending.

5. Remove the tool from the work surface before turning

the tool off. Allow the tool to stop rotating before laying itdown. Metal Applications When using the tool in metal applications, make sure that a residual current device (RCD) has been inserted to avoid residual risks caused by metalswarf. If the power supply is shut off by the RCD, take the tool to an authorised DeWALT repairagent.

WARNING: In extreme working conditions, conductive

dust can accumulate inside the machine housing when working with metal. This can result in the protective insulation in the machine becoming degraded with a potential risk of an electricalshock. To avoid build‑up of metal swarf inside the machine, we recommend to clear the ventilation slots on a daily basis. Refer toMaintenance. Cutting Metal For cutting with bonded abrasives, always use the guardTypeA. When cutting, work with moderate feed, adapted to the material being cut. Do not exert pressure onto the cutting disc, tilt or oscillate themachine. Do not reduce the speed of running down cutting discs by applying sidewardpressure. The machine must always work in an upgrinding motion. Otherwise, the danger exists of it being pushed uncontrolled out of thecut. When cutting profiles and square bar, it is best to start at the smallest crosssection. Rough Grinding Never use a cutting disc forroughing. Always use the guard TypeB. The best roughing results are achieved when setting the machine at an angle of 30° to 40°. Move the machine back and forth with moderate pressure. In this manner, the workpiece will not become too hot, does not discolour and no grooves areformed. Cutting Stone The machine shall be used only for drycutting. For cutting stone, it is best to use a diamond cutting disc. Operate the machine only with additional dust protectionmask. Working Advice Exercise caution when cutting slots in structuralwalls. Slots in structural walls are subject to the country‑specific regulations. These regulations are to be observed under all circumstances. Before beginning work, consult the responsible structural engineer, architect or the constructionsupervisor. MAINTENANCE Your DeWALT power tool has been designed to operate over a long period of time with a minimum of maintenance. Continuous satisfactory operation depends upon proper tool care and regularcleaning.48 ENGLISH The capacity of this tool is 125mm diameter x 6mm thick grinding or cutting wheels. It is important to choose the correct guards, backing pads and flanges to use with grinder accessories. See the Accessory and Guard Applications chart for information on choosing the correctaccessories. Protecting the Environment Separate collection. Products and batteries marked with this symbol must not be disposed of with normal householdwaste. Products and batteries contain materials that can be recovered or recycled reducing the demand for raw materials. Please recycle electrical products and batteries according to local provisions. Further information is available at www.2helpU.com. LED Guide The section provides a list of possible LED blink patterns, their causes and corrective solutions. The user or maintenance personnel can perform some corrective actions, and others may require the assistance of qualified DeWALT technician or yourdealer. No‑Volt Protection Problem Solution The switch is in the on position and power has been applied. The unit stayed off. Cycle the switch to restart. Kick Back Brake Problem Solution A pinch has been sensed by the tool and the kickback brake has activated. Inspect accessory for damage from pinch and replace if necessary. Adjust work piece and tool position as necessary and cycle switch to restart. Thermal Protection Problem Solution The unit has shut down to prevent permanent damage due to overheating. Ensure intake and exhaust vents are not blocked by users hands, clothing or debris during use. Reduce frequency of feathering the tool on/off and cycle switch to restart and/or unplug the unit and then plug it back in. Stall/Overload Protection Problem Solution The unit has been in a stalled condition for an extended period and it has shut down. Remove load from tool and cycle the switch to restart.

WARNING: To reduce the risk of serious personal

injury, turn tool off and disconnect tool from power source before making any adjustments or removing/ installing attachments or accessories. Be sure the trigger switch is in the OFF position. An accidental start‑up can causeinjury. Lubrication Your power tool requires no additionallubrication. Cleaning

WARNING: Blow dirt and dust out of the main housing

with dry air as often as dirt is seen collecting in and around the air vents. Wear approved eye protection and approved dust mask when performing thisprocedure.

WARNING: Never use solvents or other harsh chemicals

for cleaning the non‑metallic parts of the tool. These chemicals may weaken the materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the tool; never immerse any part of the tool into aliquid. Optional Accessories

WARNING: Since accessories, other than those offered

by DeWALT, have not been tested with this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury, only DeWALT recommended accessories should be used with thisproduct.

WARNING: Accessories must be rated for at least

the speed recommended on the tool warning label. Wheels and other accessories running over their rated accessory speed may fly apart and cause injury. Threaded accessories must have a M14 hub. Every unthreaded accessory must have a 22mm arbor hole. If it does not, it may have been designed for a circular saw. Use only the accessories shown in the Accessory and Guard Applications chart of this manual. Accessory ratings must always be above tool speed as shown on tool nameplate.

WARNING: Handle and store all abrasive wheels

carefully to prevent damage from thermal shock, heat, mechanical damage, etc. Store in a dry protected area free from high humidity, freezing temperatures or extreme temperaturechanges.

WARNING: Do not use a bonded abrasive wheel that is

past its expiration (EXP) date as marked near center of wheel (if provided). Expired wheels are more likely to burst and cause serious injury. Store bonded abrasive wheels in dry location without temperature or humidity extremes. Destroy expired or damaged wheels so they cannot beused. Consult your dealer for further information on the appropriateaccessories.49 ENGLISH Problem Power Line Problem Solution The unit is running on a poor quality power source like a low quality generator. This power may damage the tool. Try another power source, reduce extension cord length or reduce equipment used on the power source at one time. Additional Information for Guards and Accessories When using segmented diamond wheels, use only diamond wheels with a peripheral gap not greater than 10mm and negative rakeangle. ≤10 mm

segmented diamond wheels with a peripheral gap greater than 10mm and/or a positive rakeangle. For all grinding, sanding, and wheel type wire brushing accessories, the lowest portion of the accessory must be contained within the guard enclosure with 2mm or greater clearance to the bottom lip ofguard. ≥2 mm Guard Types Type B (Shallow, Grinding) Type A (Closed cut off)

Type A (Type 41) guards are intended for use with Type 41(1A) cutting wheels and Type 42(27A)wheels marked for cutting only. Grinding with wheels other than Type 27and Type 29require different accessory guards. Always use the smallest proper guard possible that does not contact theaccessory. NOTE: Type A (cut‑off) and Type B (grinding) wheel guards where previously referred to as Type 1/41and Type 27wheelguards.50 ENGLISH Accessory and Guard Applications Application Accessory Type Accessory Guard Assembly for Reference Surface Grinding Wheel Type 27 Type B (Grinding) Cutting Off Wheel Type 41 (1A) (metal) Type A (Closed cut off) Wheel Type 42 (27A) (metal) Type A (Closed cut off) Wheel Type 41 (1A) (masonry/concrete) Type A (Closed cut off) Diamond Cutting Wheel (masonry/concrete) Type A (Closed cut off)

For acceptable diamond wheel geomtry reference Additional Information for Guards and Accessories chart. Abrasive Wheels For Materials Other Than Metal Or Masonry/Concrete Type A (Closed cut off) Dual Purpose (combined cut‑off and grinding) Dual Purpose Abrasive Wheel Type A (Closed cut off) Wire Brushing Wheel‑Type Wire Brush Type A or Type B (Closed cut off or Grinding) Cup Type Wire Brush Guard no required51 ENGLISH Guidelines for Guards and Accessories for DWE4347, DWE4357, DWE4369 Non-approved Wheels for

DWE4347, DWE4357, DWE4369

Type 11/ T11 Hubbed Wheel Wrench Hubbed wheel wrench available at additional cost from your local DeWALT dealer or authorised DeWALT servicecentre

DANGER: Do not use for wood cutting or woodcarving.

Do not use toothed blades of any kind. Serious injury canresult. Application Accessory Type Accessory Guard Assembly for Reference Sanding Flap Disc (Type 27 / Type 29) Type B (Grinding) Flexible Abrasive (e.g. sandpaper) (supported by a flexible backing pad) Guard not required

BEWAAR ALLE WAARSCHUWINGEN

• Never work with the grinding cup without a suitable protection guard inplace.