BS EN 50636-2-92:2014 BSI Standards Publication Household and similar electrical appliances — Safety Part 2-92: Particular requirements for pedestrian-controlled mains-operated lawn scarifiers and aerators BS EN 50636-2-92:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 50636-2-92:2014 It supersedes BS EN 60335-2-92:2005 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee CPL/116, Safety of motor-operated electric tools A list of organizations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 © The British Standards Institution 2014 Published by BSI Standards Limited 2014 ISBN 978 580 72077 ICS 65.060.70; 97.030 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2014 Amendments issued since publication Date Text affected BS EN 50636-2-92:2014 EUROPEAN STANDARD EN 50636-2-92 NORME EUROPÉENNE EUROPÄISCHE NORM June 2014 ICS 65.060.70 Supersedes EN 60335-2-92:2005 English Version Household and similar electrical appliances - Safety - Part 2-92: Particular requirements for pedestrian-controlled mains-operated lawn scarifiers and aerators Appareils électrodomestiques et analogues - Sécurité Partie 2-92: Règles particulières pour les scarificateurs de gazon et les aérateurs fonctionnant sur le réseau et pour conducteur pied Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-92: Besondere Anforderungen für handgeführte netzbetriebene Rasen-Vertikutierer und Rasen-Lüfter This European Standard was approved by CENELEC on 2013-09-02 CENELEC 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-CENELEC Management Centre or to any CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members Ref No EN 50636-2-92:2014 E BS EN 50636-2-92:2014 EN 50636-2-92:2014 Contents –2– Page Foreword Introduction .6 Scope .7 Normative references .7 Terms and definitions General requirement .10 General conditions for the tests 10 Classification .11 Marking and instructions .11 Protection against access to live parts 14 Starting of motor-operated appliances 14 10 Power input and current 14 11 Heating 15 12 Void 15 13 Leakage current and electric strength at operating temperature 15 14 Transient overvoltages 15 15 Moisture resistance 15 16 Leakage current and electric strength .15 17 Overload protection of transformers and associated circuits 15 18 Endurance .15 19 Abnormal operation 16 20 Stability and mechanical hazards .16 21 Mechanical strength .23 22 Construction 24 23 Internal wiring .25 24 Components 25 25 Supply connection and external flexible cords 26 26 Terminals for external conductors 27 27 Provision for earthing 27 28 Screws and connections 27 29 Clearances, creepage distances and solid insulation 27 30 Resistance to heat and fire 27 31 Resistance to rusting 27 32 Radiation, toxicity and similar hazards 27 Annex AA (normative) Safety signs and symbols .39 Annex BB (informative) Safety Instructions .42 BS EN 50636-2-92:2014 –3– EN 50636-2-92:2014 Annex CC (normative) Vibration 45 Annex DD (normative) Noise test code – Engineering method (grade 2) .50 Annex EE (informative) Example of a material and construction fulfilling the requirements for an artificial surface 56 Annex FF (normative) Base 58 Annex ZZ (informative) Coverage of Essential Requirements of EU Directives .60 Bibliography 61 Figures Figure 101 Safety distances – Machines with more than one axle 28 Figure 102 Safety distances – Single axle machines 29 Figure 103 Foot probe 30 Figure 104 Strength of tine assembly 31 Figure 105 Operator zone 32 Figure 106 Front and rear guarding of tines 33 Figure 107 Side guarding of tines 34 Figure 108 Guarding of rear discharge machines 35 Figure 109 Guarding of front discharge machines 36 Figure 110 Thrown object test rig for rear discharge scarifiers with rigid tines 37 Figure 111 Impact test fixture for handle insulation 38 Figure AA.1 “Read operator’s manual” 39 Figure AA.2 “Keep bystanders away” 40 Figure AA.3 “WARNING – Beware of sharp tines, keep fingers and toes away Remove plug from mains before maintenance, adjusting, cleaning or if the cord is entangled or damaged Tines continue to rotate after the motor is switched off” 40 Figure AA.4 “Keep supply flexible cord away from tines” 41 Figure CC.1 – Examples of transducer location/orientation 47 Figure CC.2 – Examples of transducer location/orientation for hand-arm vibration 48 Figure DD.1 Microphone positions on the hemisphere (see Table DD.1) 51 Figure EE.1 Sketch of the measurement surface covered with an artificial surface (not to scale) 57 Figure FF.1 Base detail 58 Figure FF.2 Nail plan of base 59 Tables Table DD.1 Co-ordinates of microphone positions 52 Table DD.2 Absorption coefficients 53 BS EN 50636-2-92:2014 EN 50636-2-92:2014 –4– Foreword This document (EN 50636-2-92:2014) has been prepared by CLC/TC 116 "Safety of motor-operated electric tools" The following dates are fixed: • • latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement latest date by which the national standards conflicting with this document have to be withdrawn (dop) 2014-12-20 (dow) 2016-09-02 This document supersedes EN 60335-2-92:2005 EN 60335-2-92:2014 includes the following significant technical changes: – rewording of some clauses; – alignment to the European Machinery Directive 2006/42/EC; – alignment to EN 60335-1:2012 This document is to be used in conjunction with EN 60335-1:2012 “Household and similar electrical appliances Safety Part 1: General requirements” When “Part 1” is mentioned in this standard, it refers to EN 60335-1:2012 This document supplements or modifies the corresponding clauses in Part 1, so as to convert that publication into the European Standard “Particular requirements for pedestrian-controlled walkbehind mains operated scarifiers and aerators” Where a particular subclause of Part is not mentioned in this document, that subclause applies as far as is relevant Where this standard states “addition”, “modification” or “replacement”, the relevant text in Part is to be adapted accordingly Compliance with the relevant clauses of Part together with this document provides one means of conforming to the specified essential health and safety requirements of the Directive This European Standard follows the overall requirements of EN ISO 12100 Warning: Other requirements arising from other EU Directives can be applicable to the products falling within the scope of this European Standard The following numbering system is used: – subclauses , notes, tables and figures that are numbered starting from 101 are additional to those in Part 1; – additional annexes are lettered AA, BB, etc.; Note In this European Standard the following print types are used: - requirements proper: in roman type; test specifications: in italic type; explanatory matter: in smaller roman type Words in bold in the text are defined in Clause When a definition concerns an adjective, the adjective and the associated noun are also in bold Common modifications are indicated by a vertical line in the left margin of the text BS EN 50636-2-92:2014 –5– EN 50636-2-92:2014 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s) For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document BS EN 50636-2-92:2014 EN 50636-2-92:2014 –6– Introduction This document is a type C standard as stated in EN ISO 12100 The machinery concerned and the extent to which hazards, hazardous situations and events are covered is as indicated in the scope of this document 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 other standards, for machines which have been built and designed to the provisions of this type C standard BS EN 50636-2-92:2014 –7– EN 50636-2-92:2014 Scope This clause of Part is replaced by the following This European Standard specifies safety requirements and their verification for the design and construction of pedestrian controlled walk-behind mains operated scarifiers and aerators, hereinafter referred to as ‘machine(s)’, which are designed for re-generating lawns by, for instance, combing out grass, thatch and moss or cutting vertically into the lawn face using tines which rotate about a horizontal axis This standard applies in conjunction with Part NOTE Lawn scarifiers are also known as lawn rakes This European Standard does not apply to non-powered scarifiers and aerators, battery powered scarifiers and aerators, vertical axis scarifiers and aerators or those aerators which cut into the soil by means of a reciprocating motion and ride-on machines This European Standard does not apply to – lawnmowers (EN 60335-2-77); – lawn trimmers (EN 60335-2-91); – lawn edge trimmers (EN 60335-2-91); – lawn edgers, flail mowers, sickle-bar mowers or agricultural mowers This European Standard is not applicable to aerators/scarifiers which are manufactured before the date of publication of this document This European Standard deals with all the significant hazards presented by pedestrian-controlled lawn scarifiers and lawn aerators when they are used as intended and under conditions of misuse which are reasonably foreseeable NOTE Combustion engine machines are covered by EN 13684 Normative references This clause of Part is applicable except as follows Addition: EN 60335-1:2012, Household and similar electrical appliances Safety Part 1: General requirements (IEC 60335-1:2010, modified) EN ISO 354:1993, Acoustics Measurement of sound absorption in a reverberation room (ISO 354:2003) EN ISO 2758:2003, Paper Determination of bursting strength (ISO 2758:2001) EN ISO 3744:2010, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010) EN ISO 4871:2009, Acoustics Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) BS EN 50636-2-92:2014 EN 50636-2-92:2014 –8– EN ISO 11201:2010, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 11201:2010) EN ISO 12100:2010, Safety of machinery General principles for design Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13857:2008, Safety of machinery Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) EN ISO 20643:2008; Mechanical vibration Hand-held and hand-guided machinery Principles for evaluation of vibration emission (ISO 20643:2005) Terms and definitions This clause of Part is applicable except as follows 3.1.9 Replacement: 3.1.9 normal operation operation of the machine under the following conditions: the machine is operated at rated voltage with the load necessary to attain rated power input Addition: 3.101 braking system combination of one or more brakes and related means of operation and control 3.102 catcher part or combination of parts which provides a means for collecting grass, thatch, moss or other debris 3.103 control means or device which will control the operation of the machine or any specific operating function thereof 3.104 discharge chute extension of the tine enclosure from the discharge opening, generally used to control the discharge of material from the tines 3.105 discharge opening gap or opening in the tine enclosure through which grass, thatch, moss and other debris may be discharged a) front discharge denotes throwing out grass, thatch and moss so that they will be collected in a catcher which is located in front of the tines b) rear discharge denotes throwing out grass, thatch and moss so that they will be collected in a catcher which is located behind the tines BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 50 – Annex DD (normative) Noise test code – Engineering method (grade 2) DD.1 Scope This noise test code specifies the information necessary to carry out efficiently and under standardized conditions the determination of the noise emission characteristics of scarifiers and aerators Noise emission characteristics include the emission sound pressure level at the operator position and the sound power level The determination of these quantities is necessary for – manufacturers to declare the noise emitted including the uncertainties of measurement, – comparing the noise emitted by machines in the family concerned, – purposes of noise control at the source at the design stage The use of this noise test code ensures reproducibility of the determination of the noise emission characteristics within specified limits determined by the grade of accuracy of the basic noise measurement method used Noise measurement methods allowed by this standard give results with grade of accuracy DD.2 Sound power level determination For the determination of the sound power level, EN ISO 3744:2010 shall be used subject to the following modifications: – the reflecting surface shall be replaced by an artificial surface or by natural grass which complies with Clause DD.4 Reproducibility of results using natural grass is likely to be lower than that required for grade of accuracy In the case of dispute, measurements shall be carried out in the open air and on the artificial surface; – the measurement surface shall be a hemisphere with a radius, r, which depends on the width of cut of the machine under test and which shall be a) r = m for machines with a width of cut up to 1,2 m, b) r = 10 m for machines with a width of cut exceeding 1,2 m; – the microphone array shall be six microphone positions as defined in Figure DD.1 and Table DD.1; – environmental conditions shall be within the limits specified by the manufacturers of the measuring equipment The ambient air temperature shall be in the range from °C to 30 °C and the wind speed shall be less than m/s and preferably less than m/s; – for measurements in the open air K2A = dB BS EN 50636-2-92:2014 – 51 – EN 50636-2-92:2014 Dimensions in mm Key r Radius of hemisphere Figure DD.1 Microphone positions on the hemisphere (see Table DD.1) BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 52 – Table DD.1 Co-ordinates of microphone positions Position no x/r y/r z +0,7 +0,7 1,5 m -0,7 +0,7 1,5 m -0,7 -0,7 1,5 m +0,7 -0,7 1,5 m -0,27 +0,65 0,71 r +0,27 -0,65 0,71 r DD.3 A-weighted emission sound pressure level determination For the determination of the A-weighted emission sound pressure level, EN ISO 11201:2010 grade shall be used subject to the following modifications: – the reflecting surface shall be replaced by an artificial surface or by natural grass which complies with Clause DD.4 Reproducibility of results using natural grass is likely to be lower than that required for grade of accuracy In the case of dispute, measurements shall be carried out in the open air and on the artificial surface; – environmental conditions shall be within the limits specified by the manufacturers of the measuring equipment The ambient air temperature shall be in the range from °C to 30 °C, and the wind speed shall be less than m/s and preferably less than m/s; – the microphone shall be head mounted 200 mm ± 20 mm from the median plane of the head on the louder side and in line with the eyes The operator shall stand or sit upright and look straight ahead The microphone shall be aimed with its axis of maximally flat response (as specified by the manufacturer) pointing forwards and at an angle of 45° downwards from the horizontal The operator shall wear a helmet on which the microphone may be attached The helmet shall be of a shape so that its outer edge is at least 30 mm closer to the head than the microphone The operator shall be 1,75 m ± 0,05 m tall DD.4 Requirements for test floor DD.4.1 Artificial surface The artificial surface shall have absorption coefficients as given in Table DD.2, measured in accordance with ISO 354:1993 BS EN 50636-2-92:2014 – 53 – EN 50636-2-92:2014 Table DD.2 Absorption coefficients Frequencies Absorption coefficients Tolerance 125 0,1 ± 0,1 250 0,3 ± 0,1 500 0,5 ± 0,1 000 0,7 ± 0,1 000 0,8 ± 0,1 000 0,9 ± 0,1 Hz The artificial surface shall be placed on a hard, reflecting surface and have a size of at least 3,6 m ± 3,6 m placed at the centre of the test environment The construction of the supporting structure shall be such that the requirements for the acoustic properties are also met with the absorptive material in place The structure shall support the operator to avoid compression of the absorbing material NOTE See Annex EE for an example of a material and construction which can be expected to fulfil these requirements DD.4.2 Natural grass The test environment shall be covered, at least for the horizontal projection of the measurement surface used, with high-quality natural grass Before the measurements are taken, the grass shall be cut with a mower to a height of cut as near as possible to 30 mm The surface shall be clean of grass clippings and debris and shall be visibly free of moisture, frost or snow DD.5 Installation, mounting and operating conditions Measurements shall be carried out on a new, normal production machine featuring standard equipment If a debris catcher is provided or available for the machine from the manufacturer, it shall be fitted and empty The machine shall be tested in a stationary position with any traction drive disengaged and shall be set to the highest position at which the tines will still drive when the operator presence control is engaged If this setting still allows the tines to make contact with the ground surface the ground support system of the machine (wheels, tracks etc.) shall be raised on support blocks to ensure ground clearance The blocks shall be as small as is practicable consistent with safety during the test and shall be well clear of the rotating tines The machine shall be maintained and serviced in accordance with the instruction manual Before the test is commenced the motor shall be run with the tines engaged until stable conditions (i.e motor speed) are reached The supply voltage/ frequency shall comply with the upper limit of the rated voltage range and frequency and shall be maintained during the test at 0,98 to 1,02 times the stated values The supply voltage of mains powered machines is measured at the plug of the cable or cord supplied, not at the plug of any extension cable or cord During the test the tine assembly shall be engaged and unloaded The test shall be carried out at the maximum operating motor speed (see 3.112) BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 54 – A motor speed indicator shall be used to check the speed of the motor It shall have an accuracy of ± 2,5 % of the reading The indicator and its engagement with the machine shall not affect the operation during the test For the sound power level determination, machines shall be measured by placing them on the surface in such a way that the projection of the geometrical centre of their main parts (excluding handle, debris catcher etc.) coincides with the origin of the coordinate system of the microphone positions For the test the tines are raised so that they are not in contact with any surface If an artificial surface in accordance with Clause DD.4.1 is used, it shall be placed so that its geometrical centre also coincides with the origin of the coordinate system of the microphone positions The longitudinal axis of the machine shall be on the x axis The measurement shall be carried out without an operator For the sound pressure level determination, adjustable features (e.g handle height,) shall be set to suit the operator DD.6 Measurement uncertainty When measuring the emission sound pressure level at the operator position, tests shall be repeated to attain the required grade of accuracy, and until three consecutive A-weighted results give values within not more than dB The arithmetic average of these shall be the measured A-weighted emission sound pressure level of the machine The total measurement uncertainty of the emission sound pressure level respectively sound power level is depending on the standard deviation σR0 given by the applied noise emission measurement method and the uncertainty associated with the instability of the operating and mounting conditions σomc The resulting total uncertainty is then calculated from: σ tot = σR2 + σomc NOTE σtot was formerly denoted as σR ! The upper bound value of σR0 is about 1,5 dB for a grade measurement method, assuming a noise source which emits sound without significant tones NOTE For machines with a rather constant noise emission a value of 0,5 dB for σomc can apply In other cases, e.g a large influence of the material flow into and out of the machine or material flow that varies in an unpredictable manner, it is possible that a value of dB may be more appropriate Methods to determine σomc are described in the basic measurement standards The expanded measurement uncertainty U, in decibels, shall be calculated from U =k σtot, with k the coverage factor NOTE The expanded measurement uncertainty depends on the degree of confidence that is desired For the purpose of comparing the result with a limit value, it is appropriate to apply the coverage factor for a one-sided normal distribution In that case, the coverage factor k = 1,6 corresponds to a 95 % confidence level Further information is given in EN ISO 4871:2009 Please note that the expanded measurement uncertainty U is denoted as K in EN ISO 4871:2009 NOTE The expanded measurement uncertainty as described in this International Standard does not include the standard deviation of production which is used in EN ISO 4871:2009 for the purpose of making a noise declaration for batches of machines DD.7 Information to be recorded and reported The information to be recorded and reported is that required by EN ISO 3744:2010 and EN ISO 11201:2010 BS EN 50636-2-92:2014 – 55 – EN 50636-2-92:2014 DD.8 Declaration and verification of noise emission values The declaration of the A-weighted emission sound pressure level shall be made as a dual number noise emission declaration according to EN ISO 4871:2009 It shall declare the noise emission value LpA The declaration of the A-weighted sound power level LWA shall be made as a single number noise emission declaration according to EN ISO 4871:2009 The noise emission values shall be rounded to the highest decibel The noise declaration shall state that the noise emission values have been obtained according to this noise test code and to the basic standards EN ISO 11201:2010 and EN ISO 3744:2010 If this statement is not true, the noise emission declaration shall indicate clearly what the deviations are from this standard and/or from the basic standards If undertaken, verification shall be done according to EN ISO 4871:2009 by using the same mounting, installation and operating conditions as those used for the initial determination of the noise emission values BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 56 – Annex EE (informative) Example of a material and construction fulfilling the requirements for an artificial surface EE.1 Material Mineral fibre, 20 mm thick, having an airflow resistance of 11 kN s/m and a density of 25 kg/m³ EE.2 Construction As is shown in Figure EE.1, the artificial flooring of the measurement site is sub-divided into nine joint planes, each of approximately 1,20 m x 1,20 m The backing layer of the construction as shown in Figure EE.1 consists of chipboard, 19 mm thick, coated with a plastics material on both sides Such boards are used, for example, for the construction of kitchen furniture The cut edges of the chipboards should be protected against moisture by applying a coat of plastic paint The outsides of the flooring are bordered by a two-legged aluminium section, its leg height being 20 mm Sections of this profile material are also screwed to the edges of the joint planes where they serve as spacers and attachment points On the middle joint plane on which the machine is placed during measurement as well as any other place on which the operator can get to stand on, aluminium T-sections with a leg length of 20 mm are mounted as spacers These sections also provide exact markings which facilitate the alignment of the machine in the middle of the measurement site The prepared boards are then covered with the insulating felt material cut to size The felt flooring of the joint planes which are neither stood on nor driven over (type A surface in Figure EE.1) are covered with a simple wire mesh fastened to the edge strips and to the attachment points; for this purpose, the sections should be provided with holes Thus, the material is adequately attached, but it remains possible to replace the felt material should it become soiled As a wire mesh, a so-called aviary wire with a mesh width of 10 mm and a wire diameter of 0,8 mm has proved to be suitable This wire appears to protect the surface adequately without affecting the acoustic conditions Protection by simple wire mesh is not, however, sufficient in the area subjected to traffic (type B surface in Figure EE.1) For these surfaces, the use of wire grating of corrugated steel wire with a diameter of 3,1 mm and a mesh width of 30 mm has proved to be suitable The construction of the measurement site as described above offers two advantages: it can be prepared without much time and effort, and all the materials are easily obtainable The fact that the microphone positions are not situated directly above the flooring of the measurement site allows the microphones to be easily mounted on stands, assuming that the ground is even and hard as, for example, an asphalt or concrete site When arranging the microphones, account has to be taken of the fact that the height of the microphones has to be determined in relation to the surface of the flooring of the measurement site It shall, therefore, be 40 mm higher when measuring from the ground under the microphone BS EN 50636-2-92:2014 – 57 – EN 50636-2-92:2014 Dimensions in mm Key a backing layer of plastics coated chipboard (nominally 19 mm thick) b mineral wool fibre layer (nominally 20 mm thick) c aluminium T-sections (nominally mm thick × 20 mm high) d aluminium U-sections (nominally mm thick × 20 mm high) e wire mesh (nominally 10 mm × 10 mm mesh made of 0,8 mm diameter steel wire) f wire grating (nominally 30 mm × 30 mm mesh made of 3,1 mm diameter steel wire) NOTE Unless otherwise stated, all dimensions are approximate NOTE “A” This surface is not suitable to carry weight Do not stand on or drive over NOTE “B” This surface is suitable to carry weight May be stood on or driven over Figure EE.1 Sketch of the measurement surface covered with an artificial surface (not to scale) BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 58 – Annex FF (normative) Base The base shall consist of 19 mm plywood covered with 500 mm squares of coconut matting nailed to the plywood with nails spaced as shown in Figure FF.2 (see also Figure FF.1) Any square of coconut matting showing a worn area where there is evidence of 50 % or more reduction in the height or number of fibres shall be replaced The minimum base size shall be 1,5 m larger than the cutting width and 1,5 m larger than the distance between the forward edge of the leading blade tip circle and the rear edge of the trailing blade tip circle The coconut matting shall have approximately 20 mm high fibres embedded in a PVC base weighing approximately 000 g/m² Dimensions in mm Figure FF.1 Base detail BS EN 50636-2-92:2014 – 59 – EN 50636-2-92:2014 Dimensions in mm NOTE Dimensions shown are approximate Figure FF.2 Nail plan of base BS EN 50636-2-92:2014 EN 50636-2-92:2014 – 60 – Annex ZZ (informative) Coverage of Essential Requirements of EU Directives This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and within its scope the standard covers all relevant essential requirements as given in EU Directive 2006/42/EC (Machinery Directive) Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive concerned WARNING: Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard BS EN 50636-2-92:2014 – 61 – EN 50636-2-92:2014 Bibliography The bibliography of Part is applicable with the following additions: CR 1030-1:1995, Hand-arm vibration Guidelines for vibration hazards reduction Part 1: Engineering methods by design of machinery EN 13684, Garden equipment Pedestrian controlled lawn aerators and scarifiers Safety EN 60335-2-77:2010, Safety of household and similar appliances Part 2-77: Particular requirements for pedestrian-controlled walk-behind electrically powered lawn mowers (IEC 60335-277:2002, modified) EN 60335-2-91, Household and similar electrical appliances Safety Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers (IEC 60335-2-91) EN ISO 3767-1:2000 1), Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator controls and other displays Part 1: Common symbols (ISO 3767-1:1998) EN ISO 3767-3:1996 1), Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator controls and other displays Part 3: Symbols for powered lawn and garden equipment (ISO 3767-3:1995) EN ISO 3767-5:1995 1), Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator controls and other displays Part 5: Symbols for manual portable forestry machinery (ISO 3767-5:1992) EN ISO 5395-2:2013, Garden equipment - Safety requirements for combustion engine powered lawnmowers – Part 2: Pedestrian controlled lawnmowers (ISO 5395-2:2013) EN ISO 11688-1:2009, Acoustics Recommended practice for the design of low-noise machinery and equipment Part 1: Planning (ISO/TR 11688-1:1995) ISO 3864, series, Safety colours and safety signs ISO 7000:2008, Graphical symbols for use on equipment - Index and synopsis (ISO 7000:2004 + ISO 7000 Database:2008 up to ISO 7000-2750) ISO 7010:2012, Graphical symbols Safety colours and safety signs Safety signs used in workplaces and public areas ISO 11684, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment 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