BOSCH GWS 18 V-LI Angle Grinder Instruction Manual

: June 3, 2024
: Bosch

BOSCH GWS 18 V-LI Angle Grinder

Parts

Safety Instructions

General Power Tool Safety Warnings

WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

Work area safety

Keep work area clean and well lit. Cluttered or dark areas invite accidents.
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 or fumes.
Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

Electrical safety

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 electric shock.
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 or grounded.
Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
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 electric shock.
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 electric shock..
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 electric shock.

Personal safety

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 personal injury.
Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
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 energizing power tools that have the switch on invites accidents.
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 personal injury.
Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
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-related hazards.

Power tool use and care

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 was designed.
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 be repaired.
Disconnect the plug from the power source and/or the battery pack 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 tool accidentally.
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 untrained users.
Maintain power tools. 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 power tools.
Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
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 hazardous situation.

Battery tool use and care

Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.

Service

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 is maintained.

Safety Warnings for Angle Grinder

Safety Warnings common for Grinding, Sanding, Wire Brushing or Abrasive Cutting Off operations

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 serious injury.
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 personal injury.
Do not use accessories that are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
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 fly apart.
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 or controlled.
The threaded mounting of accessories must match the grinder spindle thread. For accessories mounted by flanges, the arbor hole of the accessory must fit the locating diameter of the flange. Accessories that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
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 test time.
Wear personal protective equipment. Depending on the application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and a workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high-intensity noise may cause hearing loss.
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 the immediate area of operation.
Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring. Contact with a “live” wire will also make exposed metal parts of the power tool “live” and could give the operator an electric shock.
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 your control.
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 your body.
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 electrical hazards.
Do not operate the power tool near flammable materi-als. Sparks could ignite these materials.
Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.

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 the binding.
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 these conditions. Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.

Maintain a firm grip on the power tool and position your body and arm 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 can control torque reactions or kickback forces, if proper precautions are taken.
Never place your hand near the rotating accessory. The accessory may kick back over your hand.
Do not position your body in the area where the power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
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 or kickback.
Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety Warnings Specific for Grinding and Abrasive Cutting-Off operations

Use only wheel types that are recommended 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 are unsafe.
The grinding surface of centre 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 adequately protected.
The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed to the operator. The guard helps to protect the operator from broken wheel fragments, accidental contact with the wheel and sparks that could ignite clothing.
Wheels must be used only for recommended applications. For example: do not grind with the side of the cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.
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 wheel flanges.
Do not use worn-down wheels from larger power tools. The wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst.

Additional Safety Warnings Specific for Abrasive Cutting Off operations

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 wheel breakage.
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 kick-back may propel the spinning wheel and the power tool directly at you.
When wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold the power tool 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 wheel binding.
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 the workpiece.
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 the wheel.
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 cause kickback.

Safety Warnings specific for Sanding operations

Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations, when selecting sanding paper. Larger sanding paper extending beyond the sanding pad presents a laceration hazard and may cause snagging, tearing of the disc, or kickback.

Safety Warnings specific for Wire Brushing operations

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/or skin.
If the use of a guard is recommended for wire brushing, do not allow any interference of the wire wheel or brush with the guard. Wire wheel or brush may expand in diameter due to workload and centrifugal forces.

Additional Safety Information

Wear safety goggles

Use suitable detectors to determine if there are hidden supply lines or contact the local utility company for assistance. Contact with electric cables can cause fire and electric shock. Damaging gas lines can lead to explosions. Breaking water pipes causes property damage.
Do not touch grinding and cutting discs until they have cooled down. The discs can become very hot while working.
Release the On/Off switch and set it to the Off position when the power supply is interrupted, e.g. when the battery pack is removed. This prevents uncontrolled restarting.
Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.
Do not open the battery. There is a risk of short-circuiting.
Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short-circuiting.
In case of damage and improper use of the battery, vapors may be emitted. The battery can set alight or explode. Ensure the area is well-ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
Only use the battery with products from the manufacturer. This is the only way in which you can protect the battery against dangerous overload.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.

Product Description and Specifications

Read all the safety and general instructions. Failure to observe the safety and general instructions may result in electric shock, fire and/or serious injury.
Please observe the illustrations at the beginning of this operating manual.

Intended use

The power tool is intended for cutting, roughing, and brushing metal and stone materials without the use of water. A special protective guard for cutting must be used when cutting bonded abrasives. Sufficient dust extraction must be provided when cutting stone. With approved abrasive tools, the power tool can be used for sanding with sanding discs. With the Bluetooth® Low Energy Module GCY 42 inserted, power tool data and settings can be transferred between the power tool and a mobile device by means of Bluetooth® wire-less technology.

Product Features

The numbering of the product features refers to the diagram of the power tool on the graphics page.

Direction-of-rotation arrow on the housing
Spindle lock button
On/Off switch
Hex key
Battery pack
Battery unlocking button
Auxiliary handle (insulated gripping surface)
Grinder spindle
Locking screw for a protection guard
Protection guard for grinding
Mounting flange with O-ring
Grinding wheel
Clamping nut
Quick-clamping nut
Carbide grinding head
Protection guard for cutting
Cutting disc
Handguard
Rubber sanding plate
Sanding sheet*
Round nut
Cup brush
Button for charge-control indicator
Battery charge-control indicator
Handle (insulated gripping surface)
Cutting guide with dust extraction protection guard
Diamond cutting disc

Accessories shown or described are not part of the standard delivery scope of the product. A complete overview of accessories can be found in our accessories program.

Technical Data

Noise/Vibration Information

Sound emission values are determined according to EN 60745-2-3.
Typically the A-weighted noise levels of the product are

Sound pressure level 82 dB(A); Sound power level 93 dB(A).
Uncertainty K =3 dB.
Wear hearing protection!

Vibration total values ah (triax vector sum) and uncertainty K

determined according to EN 60745-2-3

Surface grinding: ah=6.0m/s2, K=1.5m/s2,
Disk sanding: ah=2.5m/s2, K=1.5 m/s2.

The vibration level given in this information sheet has been measured in accordance with a standardized test given in EN 60745 and may be used to compare one tool with another. It may be used for a preliminary assessment of exposure. 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 insertion tools or is poorly maintained, the vibration emission may differ. This may significantly increase the exposure level over the total working period. An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or when it is running but not actually doing the job. This may significantly reduce the exposure level over the total working period. Identify additional safety measures to protect the operator from the effects of vibration such as: maintaining the tool and the accessories, keeping the hands warm, and organization of work patterns.

Assembly

Battery Charging

Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion battery of your power tool.
Note: The battery is supplied partially charged. To ensure full battery capacity, fully charge the battery in the charger before using your power tool for the first time.
The lithium-ion battery can be charged at any time without reducing its service life. Interrupting the charging process does not damage the battery.
The lithium-ion battery is protected against deep discharge by the “Electronic Cell Protection (ECP)”. When the battery is discharged, the power tool is switched off by means of a protective circuit: The application tool no longer rotates.
Do not continue to press the On/Off switch after the power tool has automatically switched off. The battery can be damaged.

Follow the instructions on correct disposal.

Removing the Battery
The battery ( 5 ) is equipped with two locking levels to prevent the battery from falling out if the battery release button ( 6 ) is pressed unintentionally. As long as the battery is inserted in the power tool, it is held in position by means of a spring.

To remove the battery (7), press the release button (8) and pull the battery out of the power tool. Do not use force to do this.

Battery Charge-control Indication (see figure A)

The three green LEDs of the battery charge-control indicator 24 indicate the charge condition of the battery 5. For safety reasons, it is only possible to check the status of the charge condition when the machine is at a standstill. Press button 23 to indicate the charge condition. This is also possible when the battery 5 is removed.

When no LED lights up after pushing button 23, then the battery is defective and must be replaced.

Mounting the Protective Devices

Before any work on the machine itself (e. g. maintenance, tool change, etc.) as well as during transport and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating the On/Off switch.

Note: After breakage of the grinding disc during operation or damage to the holding fixtures on the protection guard/power tool, the machine must promptly be sent to an after-sales service agent for maintenance. For addresses, see section “After- sales Service and Application Service”.

Protection Guard for Grinding

Place protection guard 10 on the spindle collar. Adjust the position of the protection guard 10 to the requirements of the operation. Lock the protection guard 10 tightening the locking screw 9 with a hex key 4.

Adjust the protection guard 10 in such a manner that sparking is prevented in the direction of the operator.

Note: The encoding keys on the protection guard 10 ensure that only a protection guard that fits the machine type can be mounted.

Protection Guard for Cutting

For cutting with bonded abrasives, always use the protection guard for cutting 16.
Provide for sufficient dust extraction when cutting stone.
The protection guard for cutting 16 is mounted in the same manner as the protection guard for grinding 10.

Cutting Guide with Dust Extraction Protection Guard

The cutting guide with dust extraction protection guard 26 is mounted in the same manner as the protection guard for grinding 10.

Auxiliary Handle

Operate your machine only with the auxiliary handle 7.
Screw the auxiliary handle 7 on the right or left of the machine head depending on the working method.

Hand Guard

For operations with the rubber sanding plate 19 or with the cup brush/wheel brush/flap disc, always mount the hand guard 18. The hand guard 18 is fastened with the auxiliary handle 7.

Mounting the Grinding Tools

Before any work on the machine itself (e. g. maintenance, tool change, etc.) as well as during transport and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating the On/Off switch.
Do not touch grinding and cutting discs before they have cooled down. The discs can become very hot while working.
Clean the grinder spindle 8 and all parts to be mounted. For clamping and loosening the grinding tools, lock the grinder spindle with the spindle lock button 2.
Actuate the spindle lock button only when the grinder spindle is at a standstill. Otherwise, the machine may become damaged.

Grinding/Cutting Disc

Pay attention to the dimensions of the grinding tools. The mounting hole diameter must fit the mounting flange without play. Do not use reducers or adapters. When using diamond cutting discs, pay attention that the direction- of-rotation arrow on the diamond cutting disc and the direction of rotation of the machine (see direction-of-rotation arrow on the machine head) agree. See the graphics page for the mounting sequence. To fasten the grinding/cutting disc, screw on the clamping nut 13 and tighten with the two-pin spanner; see Section “Quickclamping Nut ”.

After mounting the grinding tool and before switching on, check that the grinding tool is correctly mounted and that it can turn freely. Make sure that the grinding tool does not graze against the protection guard or other parts.

A plastic part (O-ring) is fitted around the centering collar of mounting flange 11. If the O-ring is missing or damaged, the mounting flange 11 must be replaced before resuming operation.

Flap Disc

For operations with the flap disc, always mount the hand guard 18.

Rubber Sanding Plate

For operations with the rubber sanding plate 19, always mount the hand guard 18.
See graphics page for the mounting sequence.
Screw on the round nut 21 and tighten with the two-pin spanner.

Cup Brush/Disc Brush

For operations with the cup brush/wheel brush, always mount the hand guard 18.

See graphics page for the mounting sequence. The cup brush/disc brush must be able to be screwed onto the grinder spindle until it rests firmly against the grinder spindle flange at the end of the grinder spindle threads. Tighten the cup brush/disc brush with an open-end spanner.

Quick-clamping Nut

For convenient changing of grinding tools without the use of additional tools, you can use the quick-clamping nut 14 instead of the clamping nut 13.

The quick-clamping nut 14 may be used only for grinding or cutting discs.
Use only a flawless, undamaged quick-clamping nut 14.
When screwing on, pay attention that the side of the quick-clamping nut 14 with printing does not face the grinding disc; the arrow must point to the index mark 28.

Lock the grinder spindle with the spindle lock button 2. To tighten the quick- clamping nut, firmly turn the grinding disc in a clockwise direction. A properly attached, the undamaged quick-clamping nut can be loosened by hand when turning the knurled ring in an anticlockwise direction. Never loosen a tight quick clamping nut with pliers. Always use the two-pin spanner. Insert the two-pin spanner as shown in the illustration.

Approved Grinding Tools

All grinding tools mentioned in these operating instructions can be used.
The permissible speed [min-1] or the circumferential speed [m/s] of the grinding tools used must at least match the values given in the table.
Therefore, observe the permissible rotational/circumferential speed on the label of the grinding tool.

Rotating the Machine Head

Remove the battery from the power tool before carrying out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be removed for transport and storage. There is a risk of injury from unintentionally pressing the on/off switch.The machine head can be rotated in 90° increments. In this way, the on/off switch can be brought into a more favorable handling position for particular applications, e.g. for left-handed tool users.
Completely unscrew the four screws. Rotate the machine head carefully, without removing it from the housing, into the new position. Screw in and retighten the four screws.

Dust/Chip Extraction
Dust from materials such as lead-containing coatings, some wood types, minerals, and metal can be harmful to one’s health. Touching or breathing in the dust can cause allergic reactions and/or lead to respiratory infections of the user or bystanders.
Certain dust, such as oak or beech dust, is considered carcinogenic, especially in connection with wood-treatment additives (chromate, wood preservative). Materials containing asbestos may only be worked by specialists.

Provide for good ventilation of the working place.
It is recommended to wear a P2 filter-class respirator. Observe the relevant regulations in your country for the materials to be worked.
- Avoid dust accumulation at the workplace. Dust can easily ignite.

Operation

Start-up

Inserting the battery
Push the charged battery (5) into the base of the power tool from the front until the battery is securely locked.

Switching On and Off

To start the power tool, push the On/Off switch 3 forwards.
To lock the On/Off switch 3, press the On/Off switch 3 down at the front until it latches.
To switch off the power tool, release the On/Off switch 3 or, if it is locked, briefly push down the back of the On/Off switch 3 and then release it.
To save energy, only switch the power tool on when using it.
Check grinding tools before using. The grinding tool must be mounted properly and be able to move freely. Carry out a test run for at least one minute with no load.
Do not use damaged, out-of-center or vibrating grinding tools. Damaged grinding tools can burst and cause injuries.

Working Advice

Exercise caution when cutting slots in structural walls; see Section “Information on Structures”.
Clamp the workpiece if it does not remain stationary due to its own weight.
Do not strain the machine so heavily that it comes to a standstill.
After heavily straining the power tool, continue to run it at no-load for several minutes to cool down the accessory.
Do not touch grinding and cutting discs before they have cooled down. The discs can become very hot while working.
Do not use the power tool with a cut-off stand.
When the power tool is electrostatically charged, the built-in electronic control switches it off. To restart the power tool, press the On/Off switch 3 again.

Rough Grinding

Never use a cutting disc for roughing.

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 are formed.

Flap Disc

With the flap disc (accessory), curved surfaces and profiles can be worked. Flap discs have a considerably higher service life, lower noise levels and lower sanding temperatures than conventional sanding sheets.

Cutting Metal

For cutting with bonded abrasives, always use the protection guard for cutting 16.
When cutting, work with moderate feed, adapted to the material being cut. Do not exert pressure onto the cutting disc, tilt or oscillate the machine.
Do not reduce the speed of running down cutting discs by applying sideward pressure.

The machine must always work in an upgrinding motion. Otherwise, the danger exists of it being pushed uncontrolled out of the cut. When cutting profiles and square bar, it is best to start at the smallest cross section.

Cutting Stone

Provide for sufficient dust extraction when cutting stone.
Wear a dust respirator.
The machine may be used only for dry cutting/grinding.

For cutting stone, it is best to use a diamond cutting disc. When using the cutting guide with dust extraction protection guard 26, the vacuum cleaner must be approved for vacuuming masonry dust. Suitable vacuum cleaners are available from Bosch.

Switch on the machine and place the front part of the cutting guide on the workpiece. Slide the machine with moderate feed, adapted to the material to be worked.

For cutting especially hard material, e. g., concrete with high pebble content, the diamond cutting disc can overheat and become damaged as a result. This is clearly indicated by circular sparking, rotating with the diamond cutting disc. In this case, interrupt the cutting process and allow the diamond cutting disc to cool by running the machine for a short time at maximum speed with no load. Noticeably decreasing work progress and circular sparking are indications of a diamond-cutting disc that has become dull. Briefly cutting into abrasive material (e. g. lime-sand brick) can resharpen the disc again.

Information on Structures

Slots in structural walls are subject to the Standard DIN 1053 Part 1, or country-specific regulations. These regulations are to be observed under all circumstances. Before beginning work, consult the responsible structural engineer, architect or construction supervisor.

Recommendations for Optimal Handling of the Battery

Protect the battery against moisture and water. Store the battery only within a temperature range between –20 °C and 50 °C. As an example, do not leave the battery in the car in summer. Occasionally clean the venting slots of the battery using a soft, clean and dry brush. A significantly reduced working period after charging indicates that the battery is used and must be replaced. Observe the notes for disposal.

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine itself (e. g. maintenance, tool change, etc.) as well as during transport and storage, remove the battery from the power tool. There is a danger of injury when unintentionally actuating the On/Off switch.
For safe and proper working, always keep the machine and ventilation slots clean. Please store and handle the accessories) carefully.

After-sales Service and Application Service

Our after-sales service responds to your questions concerning the maintenance and repair of your product as well as spare parts. Exploded views and information on spare parts can also be found at: www.bosch-pt.com

Bosch’s application service team will gladly answer questions concerning our products and their accessories. In all correspondence and spare parts orders, please always include the 10-digit article number given on the nameplate of the product

Great Britain

Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Address: Broadwater Park North Orbital Road Denham Uxbridge UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair. Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
You can find further service addresses at: www.bosch-pt.com/serviceaddresses

Ireland

JOrigo Ltd.
Unit 23 Magna Drive Magna Business Park City West Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888

Australia, New Zealand and Pacific Islands

Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66 Clayton South VIC 3169
Customer Contact Center
Inside Australia
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ
Phone: +61 3 95415555
www.bosch.com.au

Republic of South Africa

Customer service
Hotline: (011) 6519600

Gauteng – BSC Service Centre

35 Roper Street, New Centre Johannesburg
Tel: (011) 4939375
Fax: (011) 4930126
E-Mail: bsctools@icon.co.za

KZN – BSC Service Centre

Unit E, Almar Centre 143 Crompton Street Pinetown
Tel: (031) 7012120
Fax: (031) 7012446
E-Mail: bsc.dur@za.bosch.com

Western Cape – BSC Service Centre

Democracy Way, Prosperity Park Milnerton
Tel: (021) 5512577
Fax: (021) 5513223
E-Mail: bsc@zsd.co.za

Bosch Headquarters Midrand, Gauteng

Tel: (011) 6519600
Fax: (011) 6519880
E-Mail: rbsa-hq.pts@za.bosch.com

Transport

The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements. The batteries are suitable for road transport by the user without further restrictions. When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labeling must be observed. For the preparation of the item being shipped, consulting an expert for hazardous material is required. Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more detailed national regulations.

Disposal

Power tools, rechargeable batteries, accessories and packaging should be sorted for environmental-friendly recycling. Do not dispose of power tools and batteries/rechargeable batteries into household waste!

Only for EU countries
According to the European Guideline 2012/19/EU, power tools that are no longer usable, and according to the European Guideline 2006/66/EC, defective or used battery packs/batteries, must be collected separately and disposed of in an environmentally correct manner.

Batteries no longer suitable for use can be directly returned at

Great Britain

Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park North Orbital Road Denham Uxbridge UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Battery packs/batteries

Li-ion: Please observe the instructions in the section “Transport”.

Subject to change without notice.

EU Declaration of Conformity

We declare under our sole responsibility that the stated products comply with all applicable provisions of the directives and regulations listed below and are in conformity with the following standards. Technical file at