GWS Professional

OBJ_DOKU-7159-004.fm Page 1 Wednesday, June 4, 2008 11:25 AM

Robert Bosch GmbH Power Tools Division 70745 Leinfelden-Echterdingen

www.bosch-pt.com GWS Professional

1 609 929 L56 (2008.06) O / 372 UNI 22-180 LVI | 22-230 LVI | 24-180 LVI | 24-230 LVI

de Originalbetriebsanleitung el Πρωτότυπο οδηγιών χρήσης ro Instrucţiuni de folosire en Original instructions tr Orijinal işletme talimat originale fr Notice originale pl Instrukcją oryginalną bg Оригинално ръководство es Manual original cs Původním návodem k за експлоатация pt Manual original používání sr Originalno uputstvo za rad it Istruzioni originali sk Pôvodný návod na použitie sl Izvirna navodila nl Oorspronkelijke hu Eredeti használati utasítás hr Originalne upute za rad gebruiksaanwijzing ru Оригинальное руководст- et Algupärane kasutusjuhend da Original brugsanvisning во по эксплуатации lv Oriģinālā lietošanas sv Bruksanvisning i original uk Оригінальна інструкція з pamācība no Original driftsinstruks експлуатації lt Originali fi Alkuperäiset ohjeet instrukcija OBJ_DOKU-7162-004.fm Page 4 Wednesday, June 4, 2008 11:30 AM

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Generalen Power Tool Safety e) When operating a power tool outdoors, use an extension cord suitable for out- Warnings door use. Use of a cord suitable for out- door use reduces the risk of electric WARNING Read all safety warnings and all instructions. Failure to follow shock. the warnings and instructions may result in elec- f) If operating a power tool in a damp loca- tric shock, fire and/or serious injury. tion is unavoidable, use a residual cur- Save all warnings and instructions for future rent device (RCD) protected supply. Use reference. of an RCD reduces the risk of electric shock. The term “power tool” in the warnings refers to your mains-operated (corded) power tool or 3) Personal safety battery-operated (cordless) power tool. a) Stay alert, watch what you are doing and 1) Work area safety use common sense when operating a power tool. Do not use a power tool a) Keep work area clean and well lit. Clut- while you are tired or under the influ- tered or dark areas invite accidents. ence of drugs, alcohol or medication. A b) Do not operate power tools in explosive moment of inattention while operating atmospheres, such as in the presence of power tools may result in serious person- flammable liquids, gases or dust. Power al injury. tools create sparks which may ignite the b) Use personal protective equipment. Al- dust or fumes. ways wear eye protection. Protective c) Keep children and bystanders away equipment such as dust mask, non-skid while operating a power tool. Distrac- safety shoes, hard hat, or hearing protec- tions can cause you to lose control. tion used for appropriate conditions will reduce personal injuries. 2) Electrical safety c) Prevent unintentional starting. Ensure a) Power tool plugs must match the outlet. the switch is in the off-position before Never modify the plug in any way. Do not connecting to power source and/or bat- use any adapter plugs with earthed tery pack, picking up or carrying the (grounded) power tools. Unmodified tool. Carrying power tools with your fin- plugs and matching outlets will reduce ger on the switch or energising power risk of electric shock. tools that have the switch on invites acci- b) Avoid body contact with earthed or dents. grounded surfaces, such as pipes, radia- d) Remove any adjusting key or wrench be- tors, ranges and refrigerators. There is fore turning the power tool on. A wrench an increased risk of electric shock if your or a key left attached to a rotating part of body is earthed or grounded. the power tool may result in personal inju- c) Do not expose power tools to rain or wet ry. conditions. Water entering a power tool e) Do not overreach. Keep proper footing will increase the risk of electric shock. and balance at all times. This enables d) Do not abuse the cord. Never use the better control of the power tool in unex- cord for carrying, pulling or unplugging pected situations. the power tool. Keep cord away from f) Dress properly. Do not wear loose cloth- heat, oil, sharp edges and moving parts. ing or jewellery. Keep your hair, clothing Damaged or entangled cords increase the and gloves away from moving parts. risk of electric shock. Loose clothes, jewellery or long hair can be caught in moving parts.

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g) If devices are provided for the connec- 5) Service tion of dust extraction and collection fa- a) Have your power tool serviced by a qual- cilities, ensure these are connected and ified repair person using only identical properly used. Use of dust collection can replacement parts. This will ensure that reduce dust-related hazards. the safety of the power tool is maintained. 4) Power tool use and care a) Do not force the power tool. Use the correct power tool for your application. The Machine-specific correct power tool will do the job better Safety Warnings and safer at the rate for which it was designed. b) Do not use the power tool if the switch Safety Warnings common for Grinding, does not turn it on and off. Any power Sanding, Wire Brushing or Abrasive Cut- tool that cannot be controlled with the ting Off Operations switch is dangerous and must be re- f This power tool is intended to function as a paired. grinder, sander, wire brush or cut-off tool. c) Disconnect the plug from the power Read all safety warnings, instructions, illus- source and/or the battery pack from the trations and specifications provided with power tool before making any adjust- this power tool. Failure to follow all instruc- ments, changing accessories, or storing tions listed below may result in electric power tools. Such preventive safety shock, fire and/or serious injury. measures reduce the risk of starting the f This power tool is not recommended for power tool accidentally. polishing. Operations for which the power d) Store idle power tools out of the reach of tool was not designed may create a hazard children and do not allow persons unfa- and cause personal injury. miliar with the power tool or these in- f Do not use accessories which are not spe- structions to operate the power tool. cifically designed and recommended by the Power tools are dangerous in the hands of tool manufacturer. Just because the acces- untrained users. sory can be attached to your power tool, it e) Maintain power tools. Check for mis- does not assure safe operation. alignment or binding of moving parts, f The rated speed of the accessory must be at breakage of parts and any other condi- least equal to the maximum speed marked tion that may affect the power tool’s op- on the power tool. Accessories running fast- eration. If damaged, have the power tool er than their rated speed can break and fly repaired before use. Many accidents are apart. caused by poorly maintained power tools. f The outside diameter and the thickness of f) Keep cutting tools sharp and clean. Prop- your accessory must be within the capacity erly maintained cutting tools with sharp rating of your power tool. Incorrectly sized cutting edges are less likely to bind and accessories cannot be adequately guarded are easier to control. or controlled. g) Use the power tool, accessories and tool f The arbor size of wheels, flanges, backing bits etc. in accordance with these in- pads or any other accessory must properly structions, taking into account the work- fit the spindle of the power tool. Accesso- ing conditions and the work to be per- ries with arbor holes that do not match the formed. Use of the power tool for mounting hardware of the power tool will run operations different from those intended out of balance, vibrate excessively and may could result in a hazardous situation. cause loss of control.

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English | 23 f Do not use a damaged accessory. Before f Never lay the power tool down until the ac- each use, inspect the accessory such as cessory has come to a complete stop. The abrasive wheels for chips and cracks, back- spinning accessory may grab the surface and ing pads for cracks, tears or excess wear, pull the power tool out of your control. wire brushes for loose or cracked wires. If f Do not run the power tool while carrying it power tool or accessory is dropped, inspect at your side. Accidental contact with the for damage or install an undamaged acces- spinning accessory could snag your clothing, sory. After inspecting and installing an ac- pulling the accessory into your body. cessory, position yourself and bystanders f Regularly clean the power tool’s air vents. away from the plane of the rotating acces- The motor’s fan will draw the dust inside the sory and run the power tool at maximum housing and excessive accumulation of pow- no-load speed for one minute. Damaged ac- dered metal may cause electrical hazards. cessories will normally break apart during this test time. f Do not operate the power tool near flammable materials. Sparks could ignite these ma- f Wear personal protective equipment. De- terials. pending on application, use face shield, safety goggles or safety glasses. As appro- f Do not use accessories that require liquid priate, wear dust mask, hearing protectors, coolants. Using water or other liquid cool- gloves and workshop apron capable of stop- ants may result in electrocution or shock. ping small abrasive or workpiece fragments. The eye protection must be capable Kickback and related warnings of stopping flying debris generated by vari- f Kickback is a sudden reaction to a pinched or ous operations. The dust mask or respirator snagged rotating wheel, backing pad, brush must be capable of filtrating particles gener- or any other accessory. Pinching or snagging ated by your operation. Prolonged exposure causes rapid stalling of the rotating accesso- to high intensity noise may cause hearing ry which in turn causes the uncontrolled loss. power tool to be forced in the direction op- f Keep bystanders a safe distance away from posite of the accessory’s rotation at the the work area. Anyone entering the work ar- point of the binding. ea must wear personal protective equip- For example, if an abrasive wheel is snagged ment. Fragments of workpiece or of a broken or pinched by the workpiece, the edge of the accessory may fly away and cause injury be- wheel that is entering into the pinch point yond immediate area of operation. can dig into the surface of the material caus- f Hold power tool by insulated gripping sur- ing the wheel to climb out or kick out. The faces only, when performing an operation wheel may either jump toward or away from where the cutting accessory may contact the operator, depending on direction of the hidden wiring or its own cord. Cutting ac- wheel’s movement at the point of pinching. cessory contacting a “live” wire may make ex- Abrasive wheels may also break under these posed metal parts of the power tool “live” conditions. and shock the operator. Kickback is the result of power tool misuse f Position the cord clear of the spinning ac- and/or incorrect operating procedures or cessory. If you lose control of the power tool, conditions and can be avoided by taking the cord may be cut or snagged and your proper precautions as given below. hand or arm may be pulled into the spinning accessory.

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24 | English f Maintain a firm grip on the power tool and f Always use undamaged wheel flanges that position your body and arm to allow you to are of correct size and shape for your se- resist kickback forces. Always use auxiliary lected wheel. Proper wheel flanges support handle, if provided, for maximum control the wheel thus reducing the possibility of over kickback or torque reaction during wheel breakage. Flanges for cut-off wheels start-up. The operator can control torque re- may be different from grinding wheel flanges. actions or kickback forces, if proper precau- f Do not use worn down wheels from larger tions are taken. power tools. Wheels intended for larger f Never place your hand near the rotating ac- power tools are not suitable for the higher cessory. The accessory may kickback over speed of a smaller tool and may burst. your hand. f Do not position your body in the area where Additional safety warnings specific for the power tool will move if kickback occurs. abrasive cutting off operations Kickback will propel the tool in the direction f Do not “jam” the cut-off wheel or apply ex- opposite to the wheel’s movement at the cessive pressure. Do not attempt to make point of snagging. an excessive depth of cut. Overstressing the f Use special care when working corners, wheel increases the loading and susceptibili- sharp edges, etc. Avoid bouncing and snag- ty to twisting or binding of the wheel in the ging the accessory. Corners, sharp edges or cut and the possibility of kickback or wheel bouncing have a tendency to snag the rotat- breakage. ing accessory and cause loss of control or f Do not position your body in line with and kickback. behind the rotating wheel. When the wheel, f Do not attach a saw chain woodcarving at the point of operation, is moving away blade or toothed saw blade. Such blades from your body, the possible kickback may create frequent kickback and loss of control propel the spinning wheel and the power over the power tool. tool directly at you. f When wheel is binding or when interrupting Additional safety instructions for grind- a cut for any reason, switch off the power ing and cutting off operations tool and hold the power tool motionless un- f Use only wheel types that are recommend- til the wheel comes to a complete stop. Nev- ed for your power tool and the specific er attempt to remove the cut-off wheel from guard designed for the selected wheel. the cut while the wheel is in motion, other- Wheels for which the power tool was not de- wise kickback may occur. Investigate and signed cannot be adequately guarded and take corrective action to eliminate the cause are unsafe. of wheel binding. f The guard must be securely attached to the f Do not restart the cutting operation in the power tool and positioned for maximum safe- workpiece. Let the wheel reach full speed ty, so the least amount of wheel is exposed and carefully reenter the cut. The wheel may towards the operator. The guard helps to pro- bind, walk up or kickback if the power tool is tect operator from broken wheel fragments restarted in the workpiece. and accidental contact with wheel. f Support panels or any oversized workpiece f Wheels must be used only for recommend- to minimize the risk of wheel pinching and ed applications. For example: do not grind kickback. Large workpieces tend to sag un- with the side of the cut-off wheel. Abrasive der their own weight. Supports must be cut-off wheels are intended for peripheral placed under the workpiece near the line of grinding; side forces applied to these wheels cut and near the edge of the workpiece on may cause them to shatter. both sides of the wheel.

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English | 25 f Use extra caution when making a “pocket f When working stone, use dust extraction. cut” into existing walls or other blind areas. The vacuum cleaner must be approved for The protruding wheel may cut gas or water the extraction of stone dust. Using this pipes, electrical wiring or objects that can equipment reduces dust-related hazards. cause kickback. f Use a cutting guide when cutting stone. Without sideward guidance, the cutting disc Safety warnings specific for sanding op- can jam and cause kickback. erations f When working with the machine, always f Do not use excessively oversized sanding hold it firmly with both hands and provide disc paper. Follow manufacturers recom- for a secure stance. The power tool is guided mendations, when selecting sanding paper. more secure with both hands. Larger sanding paper extending beyond the f Secure the workpiece. A workpiece clamped sanding pad presents a laceration hazard and with clamping devices or in a vice is held may cause snagging, tearing of the disc, or more secure than by hand. kickback. f Keep your workplace clean. Blends of materials are particularly dangerous. Dust from Safety warnings specific for wire brush- light alloys can burn or explode. ing operations f Never use the machine with a damaged ca- f Be aware that wire bristles are thrown by ble. Do not touch the damaged cable and the brush even during ordinary operation. pull the mains plug when the cable is dam- Do not overstress the wires by applying ex- aged while working. Damaged cables in- cessive load to the brush. The wire bristles crease the risk of an electric shock. can easily penetrate light clothing and/or skin. f If the use of a guard is recommended for Functional Description wire brushing, do not allow any interfer- ence of the wire wheel or brush with the Read all safety warnings and all in- guard. Wire wheel or brush may expand in di- structions. Failure to follow the ameter due to work load and centrifugal forc- warnings and instructions may re- es. sult in electric shock, fire and/or serious injury. Additional safety warnings While reading the operating instructions, unfold the graphics page for the machine and leave it Wear safety goggles. open.

Intended Use The machine is intended for cutting, roughing, and brushing metal and stone materials without f Use suitable detectors to determine if utili- using water. ty lines are hidden in the work area or call For cutting metal, a special protection guard for the local utility company for assistance. cutting (accessory) must be used. Contact with electric lines can lead to fire For cutting stone, a special extraction hood for and electric shock. Damaging a gas line can cutting with cutting guide (accessory) must be lead to explosion. Penetrating a water line used. causes property damage or may cause an With approved sanding tools, the machine can electric shock. be used for sanding with sanding discs.

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Vibration total values (triax vector sum) deter- Product Features mined according to EN 60745: The numbering of the product features refers to Surface grinding: Vibration emission value 2 2 the illustration of the machine on the graphics ah=4.5 m/s , Uncertainty K=1.5 m/s , page. Disk sanding: Vibration emission value 2 2 1 Spindle lock button ah=3.5 m/s , Uncertainty K=1.5 m/s . 2 Vibration damper The vibration emission level given in this information sheet has been measured in accordance with 3 On/Off switch a standardised test given in EN 60745 and may be 4 Auxiliary handle used to compare one tool with another. It may be 5 Grinder spindle used for a preliminary assessment of exposure. 6 Protection guard for grinding The declared vibration emission level repre- 7 Encoding key sents the main applications of the tool. However if the tool is used for different applications, with 8 Clamping lever for protection guard different accessories or poorly maintained, the 9 Screw for adjustment of protection guard vibration emission may differ. This may signifi- 10 Mounting flange with O-ring cantly increase the exposure level over the total 11 Grinding/cutting disc* working period. 12 Clamping nut An estimation of the level of exposure to vibration should also take into account the times 13 Quick-clamping nut * when the tool is switched off or when it is run- 14 Protection guard for cutting* ning but not actually doing the job. This may sig- 15 Hand guard* nificantly reduce the exposure level over the to- 16 Spacer discs* tal working period. 17 Rubber sanding plate* Identify additional safety measures to protect the operator from the effects of vibration such 18 Sanding sheet* as: maintain the tool and the accessories, keep 19 Round nut* the hands warm, organisation of work patterns. 20 Cup brush* 21 Cutting guide with dust extraction protec- Declaration of Conformity tion guard * We declare under our sole responsibility that 22 Diamond cutting disc* the product described under “Technical Data” is *The accessories illustrated or described are not in- in conformity with the following standards or cluded as standard delivery. standardization documents: EN 60745 according to the provisions of the directives Noise/Vibration Information 2004/108/EC, 98/37/EC (until Dec. 28, 2009), 2006/42/EC (from Dec. 29, 2009 on). Measured values determined according to EN 60745. Technical file at: Robert Bosch GmbH, PT/ESC, Typically the A-weighted noise levels of the D-70745 Leinfelden-Echterdingen product are: Sound pressure level 92 dB(A); Sound power level 103 dB(A). Uncertainty Dr. Egbert Schneider Dr. Eckerhard Strötgen K=3dB. Senior Vice President Head of Product Wear hearing protection! Engineering Certification

28.01.2008, Robert Bosch GmbH, Power Tools Division D-70745 Leinfelden-Echterdingen

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Technical Data

Angle Grinder GWS ... 22-180 22-230 24-180 24-230 Professional LVI LVI LVI LVI Article number 3 601 ... H90 D.. H91 C.. H92 F.. H93 F.. H91 D.. H93 H.. Rated power input W 2200 2200 2400 2400 Output power W 1500 1500 1600 1600 Rated speed rpm 8500 6500 8500 6500 Grinding disc diameter, max. mm 180 230 180 230 Thread of grinder spindle M 14 M 14 M 14 M 14 Thread length (max.) of grinder spindle mm 25 25 25 25 Kickback stop z zzz Restarting Protection z zzz Reduced starting current z zzz Rotatable main handle – – z z Weight according to EPTA-Procedure 01/2003 kg 5.3 5.4 5.4 5.5 Protection class /II /II /II /II The values given are valid for nominal voltages [U] of 230/240 V. For lower voltage and models for specific countries, these values can vary. Please observe the article number on the type plate of your machine. The trade names of the individual machines may vary.

Assembly Protection Guard for Grinding Release the clamping lever 8. Place the protection guard 6 with the encoding key 7 engaging Mounting the Protective Devices into the groove on the spindle collar until the f Before any work on the machine itself, pull shoulder of the protection guard is seated the mains plug. against the flange of the power tool, and turn Note: After breakage of the grinding disc during the protection guard 6 to the requested posi- operation or damage to the holding fixtures on tion. Lock the clamping lever 8. the protection guard/power tool, the machine f Adjust the protection guard 6 in such a man- must promptly be sent to an after-sales service ner that sparking is prevented in the direc- agent for maintenance (for addresses, see section of the operator. tion „After-sales Service and Customer Assist- The tightening tension of the clamp from the ance“. protection guard 6 can be changed by loosening or tightening the adjustment screw 9. Ensure that the protection guard 6 is tightly seated and check regularly.

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Note: The encoding keys on the protection guard 6 ensure that only a protection guard that Mounting the Grinding Tools fits the machine type can be mounted. f Before any work on the machine itself, pull the mains plug. Protection Guard for Cutting f Grinding and cutting discs become very hot f For cutting metal, always work with the pro- while working; do not touch until they have tection guard for cutting 14. cooled. f For cutting stone, always work with the cut- Clean the grinder spindle 5 and all parts to be ting guide with dust extraction protection mounted. guard 21. For clamping and loosening the grinding tools, The protection guard for cutting 14 is mounted lock the grinder spindle with the spindle lock in the same manner as the protection guard for button 1. sanding 6. f Actuate the spindle lock button only when Vibration-dampening Auxiliary Handle the grinder spindle is at a standstill. Other- wise, the machine may become damaged.

Grinding/Cutting Disc Pay attention to the dimensions of the grinding f Operate your machine only with the auxilia- tools. The mounting hole diameter must fit the ry handle 4. mounting flange without play. Do not use reduc- Screw the auxiliary handle 4 on the right or left ers or adapters. of the machine head depending on the working When using diamond cutting discs, pay atten- method. tion that the direction-of-rotation arrow on the The vibration-dampening auxiliary handle reduc- diamond cutting disc and the direction of rota- es the vibrations, making operation more com- tion of the machine (see direction-of-rotation ar- fortable and secure. row on the machine head) agree. f Do not make any alterations to the auxiliary See graphics page for the mounting sequence. handle. To fasten the grinding/cutting disc, screw on Do not continue to use an auxiliary handle if it the clamping nut 12 and tighten with the two- is damaged. pin spanner; see Section “Quick-clamping Nut ”. Vibration Damper f 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 The integrated vibration damper reduces occur- other parts. ring vibrations. An O-ring (plastic part) is in- f Do not continue to use the power tool when serted in the mounting flange the damping element is damaged. 10 around the centring collar. Hand Guard If the O-ring is missing or is damaged, it must in all cases f For operations with the rubber sanding be replaced (article number plate 17 or with the cup brush/wheel 1 600 210 039) before the brush/flap disc, always mount the hand mounting flange 10 is mount- guard 15. ed. The hand guard 15 is fastened with the auxiliary handle 4.

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Flap Disc Lock the grinder spin- f For operations with the flap disc, always 23 dle with the spindle mount the hand guard 15. lock button 1. To tighten the quick-clamping Rubber Sanding Plate nut, firmly turn the f For operations with the rubber sanding grinding disc in clock- plate 17, always mount the hand guard 15. wise direction. See graphics page for the mounting sequence. Before mounting the rubber sanding plate 17, put the 2 spacer discs 16 onto the grinder spindle 5. A properly attached, Screw on the round nut 19 and tighten with the undamaged quick- two-pin spanner. clamping nut can be loosened by hand Cup Brush/Disc Brush when turning the f For operations with the cup brush/wheel knurled ring in anti- brush, always mount the hand guard 15. clockwise direction. See graphics page for the mounting sequence. Never loosen a tight quick-clamping nut The cup brush/disc brush must be able to be with pliers. Always screwed onto the grinder spindle until it rests use the two-pin span- firmly against the grinder spindle flange at the ner. Insert the two-pin end of the grinder spindle threads. Tighten the spanner as shown in cup brush/disc brush with an open-end span- the illustration. ner.

Approved Grinding Tools Quick-clamping Nut All grinding tools mentioned in these operating For convenient changing of grinding tools with- instructions can be used. out the use of additional tools, you can use the quick-clamping nut 13 instead of the clamping The permissible speed [rpm] or the circumfer- nut 12. ential speed [m/s] of the grinding tools used must at least match the values given in the table. f The quick-clamping nut 13 may be used only for grinding or cutting discs. Therefore, observe the permissible rotation- al/circumferential speed on the label of the Use only a flawless, undamaged quick-clamp- grinding tool. ing nut 13. When screwing on, pay attention that the side of the quick-clamping nut 13 with printing does not face the grinding disc; the arrow must point to the index mark 23.

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max. Dust/Chip Extraction [mm] [mm] f Dusts from materials such as lead-containing D b d [rpm] [m/s] coatings, some wood types, minerals and metal can be harmful to one’s health. Touch- d 180 8 22.2 8500 80 ing or breathing-in the dusts can cause aller- D 230 8 22.2 6500 80 gic reactions and/or lead to respiratory infec- b tions of the user or bystanders. Certain dusts, such as oak or beech dust, are D 180 8500 80 considered as carcinogenic, especially in –– 230 6500 80 connection with wood-treatment additives (chromate, wood preservative). Materials containing asbestos may only be worked by d specialists. 100 30 M 14 8500 45 b – Use dust extraction whenever possible. D – Provide for good ventilation of the working place. Rotating the Main Handle – It is recommended to wear a P2 filter- (GWS 24-180 LVI/GWS 24-230 LVI) class respirator. f Before any work on the machine itself, pull Observe the relevant regulations in your the mains plug. country for the materials to be worked.

Operation 24 25 Starting Operation f Observe correct mains voltage! The voltage of the power source must agree with the voltage specified on the nameplate of the machine. Power tools marked with 230 V can also be operated with 220 V. When operating the machine with power from mobile generators that do not have sufficient re- The main handle 24 can be rotated with respect serve capacity or are not equipped with suitable to the machine housing toward the left or right voltage control with starting current amplifica- in steps of 90°. In this manner, the On/Off tion, loss of performance or untypical behavior switch can be brought into a more convenient can occur upon switching on. position for special working situations, e.g., for Please observe the suitability of the power gen- cutting operations using the cutting guide with erator being used, particularly with regard to dust extraction protection guard 21/cut off the mains voltage and frequency. stand or for left-handed persons. Switching On and Off Press the handle unlocking button 25 in the direction of the arrow and at the same time turn To start the power tool, press the On/Off switch the main handle 24 to the requested position 3 forward and then down. until it latches. To lock-on the pressed On/Off switch 3, push the On/Off switch 3 further forward.

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To switch off the power tool, release the On/Off Note: When the machine runs with full speed af- switch 3, or when it is locked, briefly press the ter switching on, the reduced starting current, On/Off switch 3 and then release it. the restarting protection and the kickback stop Switch Version without Lock-on features have failed. The power tool must (country-specific): promptly be sent to an after-sales service agent for maintenance; addresses, see Section „After- To start the power tool, press the On/Off switch sales Service and Customer Assistance“. 3 forward and then down. To switch off the machine, release the On/Off Working Advice switch 3. f Exercise caution when cutting slots in f Check grinding tools before using. The structural walls; see Section “Information grinding tool must be mounted properly on Structures ”. and be able to move freely. Carry out a test run for at least one minute with no load. Do f Clamp the workpiece if it does not remain not use damaged, out-of-centre or vibrating stationary due to its own weight. grinding tools. Damaged grinding tools can f Do not strain the machine so heavily that it burst and cause injuries. comes to a standstill. f Kickback stop After heavily straining the power tool, continue to run it at no-load for several minutes In case of a sudden drop in speed, to cool down the cutting/grinding tool. e.g., caused by a jammed disc f while cutting, the power supply to Grinding and cutting discs become very hot the motor is electronically inter- while working; do not touch until they have rupted. cooled. To restart the operation, switch the On/Off Note: When not using for extended periods, pull switch 3 to the Off position and start the ma- the mains plug out of the socket outlet. When chine again. the mains plug is inserted and mains voltage is given, the power tool, even when switched off, Note: When the machine only runs with heavily still consumes a low amount of current. reduced speed, the kickback stop feature has failed. The power tool must promptly be sent to Rough Grinding an after-sales service agent for maintenance; ad- f Never use a cutting disc for roughing. dresses, see Section „After-sales Service and Customer Assistance“. The best roughing results are achieved when setting the machine at an angle of 30° to 40°. Restarting Protection Move the machine back and forth with moderate The restarting protection feature prevents un- pressure. In this manner, the workpiece will not controlled restarting of the machine after an in- become too hot, does not discolour and no terruption in the power supply. grooves are formed. To restart the operation, switch the On/Off Flap Disc switch 3 to the Off position and start the ma- With the flap disc (accessory), curved surfaces chine again. and profiles can be worked. Reduced starting current Flap discs have a considerably higher service The electronic reduced starting current limits life, lower noise levels and lower sanding tem- the power consumption when switching the tool peratures than conventional sanding sheets. on and enables operation from a 13 ampere Cutting Metal fuse. f For cutting metal, always work with the protection guard for cutting 14.

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When cutting, work with moderate feed, adapt- For cutting expecially hard material, e. g., con- ed to the material being cut. Do not exert pres- crete with high pebble content, the diamond sure onto the cutting disc, tilt or oscillate the cutting disc can overheat and become damaged machine. as a result. This is clearly indicated by circular Do not reduce the speed of running down cut- sparking, rotating with the diamond cutting ting discs by applying sideward pressure. disc. In this case, interrupt the cutting process and al- The machine must low the diamond cutting disc to cool by running always work in an the machine for a short time at maximum speed up-grinding mo- with no load. tion. Otherwise, the danger exists of it Noticeable decreasing work progress and circu- being pushed un- lar sparking are indications of a diamond cutting controlled out of disc that has become dull. Briefly cutting into the cut. abrasive material (e. g. lime-sand brick) can re- sharpen the disc again. When cutting profiles and square Information on Structures bar, it is best to Slots in structural walls are subject to the start at the smallest Standard DIN 1053 Part 1, or country-specific cross section. regulations. Cutting Stone These regulations are to be observed under all circumstances. Before beginning work, consult f For cutting stone, always work with the cut- the responsible structural engineer, architect or ting guide with dust extraction protection the construction supervisor. guard 21. f The machine may be used only for dry cutting/grinding. Maintenance and Service For cutting stone, it is best to use a diamond cutting disc. As a safety measure against jam- ming, the cutting guide with dust extraction pro- Maintenance and Cleaning tection guard 21 must be used. f Before any work on the machine itself, pull Operate the machine only with dust extraction the mains plug. and additionally wear a dust protection mask. f For safe and proper working, always keep The vacuum cleaner must be approved for the the machine and ventilation slots clean. extraction of masonry dust. Bosch provides suit- f In extreme working conditions, conductive able vacuum cleaners. dust can accumulate in the interior of the Switch on the ma- machine when working with metal. The pro- chine and place tective insulation of the machine can be de- the front part of graded. The use of a stationary extraction the cutting guide system is recommended in such cases as on the workpiece. well as frequently blowing out the ventila- Slide the machine tion slots and installing a residual current with moderate device (RCD). feed, adapted to Please store and handle the accessory(-ies) the material to be carefully. worked.

1 609 929 L56 | (4.6.08) Bosch Power Tools OBJ_BUCH-429-005.book Page 33 Wednesday, June 4, 2008 11:55 AM

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If the machine should fail despite the care taken Ireland in manufacturing and testing procedures, repair Origo Ltd. should be carried out by an after-sales service Unit 23 Magna Drive centre for Bosch power tools. Magna Business Park In all correspondence and spare parts order, City West please always include the 10-digit article Dublin 24 number given on the type plate of the machine. Tel. Service: +353 (01) 4 66 67 00 WARNING! Important instructions for con- Fax: +353 (01) 4 66 68 88 necting a new 3-pin plug to the 2-wire cable. Australia, New Zealand and Pacific Islands The wires in the cable are coloured according to the following code: Robert Bosch Australia Pty. Ltd. Power Tools Locked Bag 66 Clayton South VIC 3169 Customer Contact Center Inside Australia: Phone: +61 (01300) 307 044 Do not connect the blue or brown wire to the Fax: +61 (01300) 307 045 earth terminal of the plug. Inside New Zealand: Important: If for any reason the moulded plug is Phone: +64 (0800) 543 353 removed from the cable of this power tool, it Fax: +64 (0800) 428 570 must be disposed of safely. Outside AU and NZ: Phone: +61 (03) 9541 5555 www.bosch.com.au After-sales Service and Customer As- sistance Disposal Our after-sales service responds to your ques- The machine, accessories and packaging should tions concerning maintenance and repair of your be sorted for environmental-friendly recycling. product as well as spare parts. Exploded views and information on spare parts can also be Only for EC countries: found under: Do not dispose of power tools in- www.bosch-pt.com to household waste! Our customer consultants answer your ques- According the European Guideline tions concerning best buy, application and ad- 2002/96/EC for Waste Electrical justment of products and accessories. and Electronic Equipment and its implementation into national Great Britain right, power tools that are no longer usable Robert Bosch Ltd. (B.S.C.) must be collected separately and disposed of in P.O. Box 98 an environmentally correct manner. Broadwater Park North Orbital Road Denham Subject to change without notice. Uxbridge UB 9 5HJ Tel. Service: +44 (0844) 736 0109 Fax: +44 (0844) 736 0146 E-Mail: [email protected]

Bosch Power Tools 1 609 929 L56 | (4.6.08)