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BRITISH STANDARD Hand-held non-electric power tools — Safety requirements — Part 3: Drills and tappers ICS 25.100.30; 25.140.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BS EN 792-3:2000 +A1:2008 BS EN 792-3:2000+A1:2008 National foreword This British Standard is the UK implementation of EN 792-3:2000+A1:2008 It supersedes BS EN 792-3:2000 which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by The UK participation in its preparation was entrusted by Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology, to Panel MCE/8/-/2, Hand-held, non-electric power tools – Safety A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Committee and comes into effect on 15 August 2000 © BSI 2009 ISBN 978 580 61932 Amendments/corrigenda issued since publication Date 30 April 2009 Comments Implementation of CEN amendment A1:2008 EUROPEAN STANDARD EN 792-3:2000+A1 NORME EUROPÉENNE EUROPÄISCHE NORM September 2008 ICS 25.140.10; 25.140.99 Supersedes EN 792-3:2000 English Version Hand-held non-electric power tools - Safety requirements - Part 3: Drills and tappers Machines portatives moteur non électrique - Prescriptions de sécurité - Partie 3: Perceuses et taraudeuses Handgehaltene nicht-elektrisch betriebene Maschinen Sicherheitsanforderungen - Teil 3: Bohrmaschinen und Gewindeschneider This European Standard was approved by CEN on 26 May 2000 and includes Amendment approved by CEN on 26 July 2008 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members B-1050 Brussels Ref No EN 792-3:2000+A1:2008: E BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Contents Page Foreword Introduction Scope Normative references 3.1 3.2 Terms and definitions General terms and definitions Terms and definitions related to drills and tappers List of hazards 5.1 5.2 5.3 5.4 5.5 5.6 5.7 Safety requirements and measures .9 Mechanical safety Thermal safety Noise .9 Vibration .10 Materials and substances processed, used or exhausted 10 Ergonomics 10 Safety related measures and means 11 6.1 6.2 Information for use 12 Marking, signs and written warnings .12 Instruction for use .12 7.1 7.2 7.3 7.4 Verification 14 Noise .14 Vibration .14 Unintentional start .14 Structure of verification 15 Annex A (informative) Examples of drills and tappers covered by this part 16 Annex B (informative) Symbols for labels and signs 17 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 18 Bibliography 20 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Foreword This document (EN 792-3:2000+A1:2008) has been prepared by Technical Committee CEN/TC 255 "Handheld, non-electric power tools - Safety", the secretariat of which is held by SIS This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2009 and conflicting national standards shall be withdrawn at the latest by December 2009 This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s) !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document." This document includes Amendment 1, approved by CEN on 2008-07-26 This document supersedes EN 792-3:2000 The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " The standard has been created in close co-operation with CENELEC/TC 61F with the aim of achieving requirements for mechanical safety in the EN 50144 series, which are similar for hand-held electric and nonelectric power tools The annexes to this part of the standard are: Annex A (informative) Examples of power tools covered by this part Annex B (informative) Labels, signs and tags !Annexes ZA and ZB" (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives This standard also contains a Bibliography According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Introduction This European standard is a type C standard as stated in EN 1070 The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this standard When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of other standards, for machines that have been designed and built according to the provisions of this type C standard The European Standard, EN 792, consists of a number of independent parts for individual types of hand-held non-electric power tools Other EN standards deal with safety rules for hand-held power tools used in e g the following fields: agriculture and forestry such as chain saws, hedge-trimmers, brush cutters, grass trimmers construction and building such as cutting-off power tools, concrete vibrators food industry, such as fowl secateurs, sheep shears Endeavours have been made to achieve co-ordination with the relevant Technical Committees so that the safety requirements are compatible This standard is divided in the following parts: Part - Assembly power tools for non-threaded mechanical fasteners (former part 14) Part - Cutting-off and crimping power tools (former part 15) Part - Drills and tappers Part - Non rotary percussive power tools Part - Rotary, percussive power drills Part - Assembly power tools for threaded fasteners Part - Grinders Part - Sanders and polishers Part - Die grinders Part 10 - Compression power tools Part 11 - Nibblers and shears Part 12 - Small circular, small oscillating and reciprocating saws Part 13 - Fastener driving tools BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Certain parts of EN 792 cover hand-held non-electric power tools, driven by internal combustion engines powered by gaseous or liquid fuel In these parts, the safety aspects relating to internal combustion engines are found in a normative annex The parts are type C standards and refer to pertinent European Standards of type A and B where such standards are applicable Scope The standard EN 792 applies to hand-held non-electric power tools driven by rotary or linear motors, powered by compressed air, hydraulic fluid and intended to be used by one operator and supported by: the operator's hand or hands, a suspension, e.g a balancer This part, EN 792-3, applies to hand-held non electric power tools used for rotary drilling of holes in all kinds of material, e.g wood, metal, concrete, plastics etc and tappers for tapping and cleaning threads in metal and plastics This part lists the significant hazards caused by such power tools and specifies safety requirements valid for different aspects of safety during their foreseeable lifetime Power tools covered by this part of the standard: drills, heavy duty drills with two handles, tappers Special requirements and modifications on a hand-held power tool for the purpose of mounting it in a fixture are not covered by this part NOTE At the date of publication no drills and tappers driven by internal combustion engines are known Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of the publications referred to in this European Standard are valid only when they are incorporated in this standard by amendment or revision For undated references the latest edition of the publication referred to, applies (including amendments) EN 292-1:1991, Safety of machinery - Basic concepts, general principles for design – Part 1: Basic terminology, methodology EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design – Part 2: Technical principles and specifications EN 563, Safety of machinery - Temperatures of touchable surfaces - Ergonomics data to establish temperature limit values for hot surfaces EN 614-1, Safety of machinery - Ergonomic design principles – Part 1: Terminology and general principles BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) EN 1070, Safety of machinery - Terminology EN 12096, Mechanical vibration - Declaration and verification of vibration emission values EN ISO 4871, Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) !EN ISO 15744:2008, Hand-held non-electric power tools – Noise measurement code – Engineering method (grade 2) (ISO 15744:2002)" EN 28662-1, Hand-held portable power tools - Measurement of vibration at the handle – Part 1: General (ISO 8662-1:1988) ISO 3857-3, Compressors, Pneumatic tools and machines, Vocabulary – Part 3: Pneumatic tools and machines ISO 5391, Pneumatic tools and machines – Vocabulary Terms and definitions For the purposes of this part of the standard, the following terms and definitions apply: 3.1 General terms and definitions 3.1.1 hand-held power tool machine driven by rotary or linear motors powered by compressed air, hydraulic fluid, gaseous or liquid fuel, electricity or stored energy (e.g by a spring) to mechanical work and so designed that the motor and the mechanism form an assembly that can easily be brought to its place of operation The hand-held power tool is operated by one or two hands NOTE Hand-held power tools driven by compressed air or gas are called pneumatic tools Hand-held power tools driven by hydraulic liquid are called hydraulic tools 3.1.2 rotary power tool hand-held power tool the machine spindle of which rotates 3.1.3 inserted tool tool inserted in the hand-held power tool to perform the intended work 3.1.4 service tool tool intended for performing maintenance or service on the hand-held power tool 3.1.5 control device device to start and stop the hand-held power tool or to change the direction of the rotation or to control the functional characteristics such as speed and power 3.1.6 maximum operating pressure maximum pressure that a hand-held power tool may be operated at, as specified by the manufacturer BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) 3.2 Terms and definitions related to drills and tappers 3.2.1 drill rotary power tool driving an output spindle, typically through a gearbox The output spindle is normally fitted with chuck, or Morse taper or other socket, into which is fitted an inserted tool e.g drill bit, reamer, making the power tool suitable for drilling, reaming, tube expanding and for boring in metal, wood and other materials 3.2.2 drill bit inserted tool for drilling operation 3.2.3 reamer inserted tool for reaming operation 3.2.4 tap inserted tool for tapping operation 3.2.5 tapper rotary power tool for tapping or cleaning threads in holes in metal or other materials The rotation of the spindle is reversible For other terms, see EN 1070 and also ISO 3857-3 and ISO 5391 For examples of drills and tappers see annex A BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) List of hazards The following hazards can occur in the use of drills and tappers Hazard type Reference to safety requirement By design or Information guarding for use 4.1 Mechanical hazards - cutting - drawing in or trapping (caused by hair, clothing etc getting entangled in a rotating power tool) - friction or abrasion hazard - whipping hose - ejection from high pressure hydraulic systems - ejection of parts - loss of stability - hose and hose coupling specifications 4.2 Electrical hazards 4.3 Thermal hazards - explosions - health damage due to hot or cold surfaces 4.4 Hazards caused by noise 4.5 Hazards generated by vibration 4.6 Hazards generated by materials substances processed, used or exhausted - inhalation of harmful dust - exhaust air - lubricants - hydraulic fluid 5.1.1 6.2.2 5.1.1 6.2.2 5.1.4 5.1.3 5.1.2 6.2.2 6.2.2 5.2 5.2 5.3 5.4 6.2.2 6.2.2 and 4.7 Hazards caused by neglecting ergonomic principles - repetitive strain injuries - unsuitable postures - inadequate grip design and tool balance - effects of reaction forces upon operator - neglected use of personal protection equipment 5.5.2, 5.5.1 5.5.3 6.2.2 5.6.1, 5.6.2, 5.6.3, 6.2.2 5.6.1 5.6.4 6.2.2 4.8 Hazards caused by failure of energy supply - unexpected return of energy supply after a breakdown - incorrect hydraulic fluid flow and outlet pressure 4.9 Hazards caused by missing and/or incorrectly positioned safety related means - start and stop device - unintentional start 6.2.2 6.2.2 6.2.2 5.7.1 5.7.2 6.2.2 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Safety requirements and measures 5.1 Mechanical safety 5.1.1 Surfaces, edges and corners Accessible parts of the power tools shall not have sharp edges or angles or rough or abrasive surfaces, see 3.1 of EN 292-2:1991 5.1.2 Supporting surface and stability Power tools shall be so designed that they can be laid aside and remain in stable position on a plane surface 5.1.3 Chuck keys and service tools Chuck keys and service tools used with drilling and tapping chucks shall be so designed that they drop easily out of position when released They may be fixed to the power tool by design, e.g clip, but not by a chain or string or other similar means 5.1.4 High pressure ejection Hydraulic systems of the power tools shall be enclosed so as to give protection against high pressure fluid ejection 5.1.5 Guards Guards covering the chuck and inserted tools are not required 5.2 Thermal safety Surface temperatures of parts of the power tools which are held during use or could be inadvertently touched shall follow the provisions of EN 563 NOTE The limit values for low temperatures are studied by CEN/C 122 Power tools for use in potentially explosive atmospheres should comply with EN 1127-1 However because the suitability of a power tool for use in potentially explosive atmospheres will depend not only on the power tool but the inserted tool and the workpiece, it is not possible to give any detailed advice in this standard 5.3 Noise 5.3.1 General The emission of noise from a hand-held power tool shall be kept as low as possible The noise emission from using hand-held power tools emanates from three main sources: the hand-held power tool itself, the inserted tool, the workpiece NOTE Generally, the manufacturer has no possibility of influencing the noise emitted by the processed workpiece BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) 5.3.2 Noise emitted by the hand-held power tool The noise emitted by the hand-held power tool itself can be divided into: noise from the motor, noise from exhaust air at pneumatic tools, vibration induced noise The noise from the exhaust of air is one major contributor of noise from pneumatic driven hand-held power tools A silencer of good design will reduce this noise The principles contained in EN ISO 11688-1 should be followed to reduce the noise emitted by the power tool NOTE The exhaust air can also be piped away in a hose away from the operator, however this method has limitations in practice Vibration induced noise can be reduced by use of acoustic isolation and vibration damping 5.4 Vibration Vibration at the handle of a hand-held power tool shall be kept as low as possible The principles contained in CR 1030-1 should be followed to reduce the vibration emitted by the power tool 5.5 5.5.1 Materials and substances processed, used or exhausted Exhaust air For power tools driven with compressed air the exhaust air shall be directed in such a way that it cannot cause a hazard to the operator and so that any secondary effects are minimized e.g blowing the dust and reflected air from the workpiece onto the operator 5.5.2 Dust It shall be possible to connect to drills a dust collecting device or to use a dust suppression device 5.5.3 Lubricants Lubricants for power tools, specified by the manufacturer, shall not cause hazards to the operator or the environment 5.6 5.6.1 Ergonomics Design of the handle Handles and other parts used for gripping the power tool shall be designed to ensure that the operator is able to grip the drill or the tapper correctly and to perform the expected work Handles shall suit the functional anatomy of the hand and the dimensions of the hands of the operator population See 3.6 of EN 292-2:1991 and EN 614-1 Power tools having a mass greater than kg (including the inserted tool) shall be capable of being supported by two hands whilst being lifted or operated 10 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) 5.6.2 Control device The control device shall be adapted to the handle or to the part of the power tool being gripped by the operator so that it can be held comfortably in the run position For power tools which are normally are started frequently and often used for precision works the trigger force should be small For further information on trigger forces for control devices see EN 894-3:2000 5.6.3 Suspension device Provision shall be made, where appropriate, to enable the attachment to the power tool of a suspension device The fitting of a suspension device shall not introduce an additional hazard 5.6.4 Reaction torque Drills and tappers shall be designed so that the effect of reaction torque is reduced as much as possible This can be done by mounting a support handle or other suitable means There shall be provisions for mounting a support handle when the chuck capacity is equal or larger than 16 mm Straight rotary tools shall have provisions for mounting a second handle, when the reaction torque is over Nm Pistol grip tools shall have a provision for mounting a second handle, when the reaction torque is over 10 Nm 5.7 5.7.1 Safety related measures and means Start and stop device Drills and tappers shall be equipped with a single control device to start or stop them It shall be arranged near the handle so that the operator can activate it without releasing the grip on the handles The start and stop device shall be so designed that the inserted tool ceases to be powered when the start and stop device is released Without manual effort it shall, when released, move to the stop position, i.e be of the type "hold to run" The start and stop device shall be in the stop position or immediately move to the stop position when the drill or tapper is connected to the energy supply It shall not be possible to lock the start and stop device in the running position 5.7.2 Unintentional start The start and stop device for drills and tappers with chuck capacity larger than 10 mm shall be so designed, positioned or guarded that the risk of unintentional start is minimized Verification shall be made according to 7.3 11 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Information for use 6.1 Marking, signs and written warnings !Drills and tappers shall be marked visibly, legibly and indelibly with the following minimum particulars: the business name and full address of the manufacturer and, where applicable, his authorized representative; designation of the machinery; the CE Marking (see Annex III); designation of series or type; serial number, if any; the year of construction, that is the year in which the manufacturing process is completed." Power tools shall be permanently marked with a graphical symbol, stating that the operator's instruction shall be read before work starts, according to annex B 6.2 Instruction for use 6.2.1 General The instructions for use shall be drawn up by the manufacturer and contain: operator's instruction maintenance instruction The operator's instructions shall be drawn up in according to 5.5.2 of EN 292-2:1991 and annex A, 1.7.4 and 2.2 of EN 292 2:1991 Concerning residual risks see 5.5 of EN 292-1:1991 6.2.2 Operator's instruction The operator's instruction shall include a description of the correct use of the drill or tapper and make reference to the appropriate inserted tools The operator's instruction shall state that any other use is forbidden Foreseeable misuse of the power tool, which experience has shown to occur, shall be warned against !The operator's instruction shall give information on airborne noise emissions: the A-weighted emission sound pressure level at workstations, where this exceeds 70 dB (A); where this level does not exceed 70 dB (A), this fact shall be indicated; the peak C-weighted instantaneous sound pressure value at workstations, where this value exceeds 63 Pa (130 dB in relation to 20 µPa); the A-weighted sound power level emitted by the machinery, where the A-weighted emission sound pressure level at workstations exceeds 80 dB(A)." 12 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) !The operator's instruction shall give information on vibration total value in the handles, including uncertainty of measurement." The reference numbers of the applied standards for noise and vibration measurements shall be given The operator's instruction shall recommend the use of ear protectors Warnings shall be given: that power tools are not generally insulated for coming into contact with electric power sources; that, if the application for which the power tool is being used may result in the reaction torque upon the operator exceeding the appropriate value according to clause 5.6.1, a second handle shall be used; that high reaction torque can be developed in the case of stalling Stalling can be caused by excessive loads being applied to the drill bit, the drill bit snags on the material being drilled into or when the drill bit breaks through the material being drilled; that unexpected tool movement or breakage of inserted tool may cause injuries; that unsuitable postures may not allow counteracting of normal or unexpected movement of the power tool; that power tools shall be isolated from the energy source before changing the inserted tool; of the risk related to the rotating chuck and drill bit; of the risk of drawing in or trapping; of the risk of a whipping compressed air hose; Instructions shall be given: on suitable postures to counteract the effects of sudden excessive torque, e.g by the mounting of a support handle; on action to be taken on the break-through when the drill bit passes through the material being drilled; to check that the chuck key is taken away before drilling starts; if the drill or tapper is fixed to a suspension device, make sure that the attachment is secure; release the start and stop device in the case of an interruption of the energy supply; that only lubricants recommended by the manufacturer shall be used; that only hydraulic fluid recommended by the manufacturer shall be used; to use support handle or other means provided with the power tool in order to minimize the hazard due to reaction torque Information shall be given for hydraulic power tools regarding the design and dimension of couplings: specification of the coupling, specification of hoses with regard to pressure and flow, 13 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) maximum inlet pressure, maximum flow, maximum inlet temperature of the inlet fluid If the drill is intended as a prime mover for other functions such as sawing, screw driving, hedge trimming, the operator's instructions shall make reference to instructions for those applications NOTE 6.2.3 It is recommended to check with the manufacturer if non-flammable fluids can be used Maintenance instruction The maintenance instruction shall contain: instruction to keep the power tool safe by regular maintenance; information on when the regular maintenance shall be carried out; for instance after a specified time of operation, a specified number of cycles/operations, a stated number of times per year; instructions for disposal so as not to impose hazards to personnel and the environment; ! the specifications of the spare parts to be used, when these affect the health and safety of operators." Verification 7.1 Noise Compliance with 5.3 and 6.2.2 shall be verified as follows: An equivalent continuous A-weighted sound pressure level at workstation shall be measured, and stated according to !EN ISO 15744:2008" An A-weighted sound power level shall be measured and stated according to !EN ISO 15744:2008" The noise emission values shall be declared according to EN ISO 4871 7.2 Vibration Compliance with 5.4 and 6.2.2 shall be verified as follows: The vibration level at the handle of the power tool shall be measured and stated according to EN 28662-1 The vibration value shall be declared according to EN 12096 7.3 Unintentional start Compliance with 5.7.2 shall be verified as follows: The drill or tapper with chuck capacity larger than 10 mm shall be connected to the energy supply and placed in any possible position and pulled over the horizontal plane by its hose Continuous operation of the start and stop device shall then not occur 14 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) 7.4 Structure of verification Safety requirement 5.1.1 Visual check Functional check Measurement Reference to clauses of this standard or to other standards X Surfaces, edges and angles 5.1.2 X Stability 5.1.4 X High pressure ejection 5.2 X EN 563 X !EN ISO 15744:2008" X EN 28662-1 Thermal safety 5.3 Noise 5.4 Vibration 5.5.2 X Dust 5.6.1 X Handle 5.6.2 X X Control device 5.6.3 X Suspension device 5.6.4 X X X Reaction torque 5.7.1 X Start and stop device 5.7.2 X X clause 7.3 Unintentional start 15 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Annex A (informative) Examples of drills and tappers covered by this part E: drill (straight) E: heavy duty drill with two handles F: perceuse droite F: Perceuse deux poignée pour travaux lourds D: Bohrmaschine, gerader Griff D: Hochleitungsbohrmaschine mit zwei Handgriffe E: drill (pistol-grip) E: tapper F: perceuse poignée revolver F: taraudeuse D: Bohrmaschine, Pistolengriff D: Gewindeschneider E: drill (angle) F: perceuse d'angle D: Bohrmaschine mit Winkelgetriebe 16 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Annex B (informative) Symbols for labels and signs Symbol Significance Colours B.1 The operator's instructions must be read before work starts Background: blue Corresponding standard Symbol; white 17 BS EN 792-3:2000+A1:2008 EN 792-3:2000+A1:2008 (E) Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 98/37/EC, amended by 98/79/EC on machinery Once this standard is cited in the Official Journal of the European Communities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive except ER 1.5.7 and associated EFTA regulations WARNING - Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard." 18