SIST EN 12733:2001+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.9DUQRVWLand- und forstwirtschaftliche Maschinen - Handgeführte Motormäher - SicherheitMatériel agricole et forestier - Motofaucheuses à conducteur à pied - SécuritéAgricultural and forestry machinery - Pedestrian controlled motor mowers - Safety65.060.50Oprema za spravilo pridelkovHarvesting equipmentICS:Ta slovenski standard je istoveten z:EN 12733:2001+A1:2009SIST EN 12733:2001+A1:2009en,fr01-maj-2009SIST EN 12733:2001+A1:2009SLOVENSKI
STANDARDSIST EN 12733:20011DGRPHãþD



SIST EN 12733:2001+A1:2009



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12733:2001+A1
March 2009 ICS 65.060.50 Supersedes EN 12733:2001English Version
Agricultural and forestry machinery - Pedestrian controlled motor mowers - Safety
Matériel agricole et forestier - Motofaucheuses à conducteur à pied - Sécurité
Land- und forstwirtschaftliche Maschinen - Handgeführte Motormäher - Sicherheit This European Standard was approved by CEN on 21 January 2001 and includes Corrigendum 1 issued by CEN on 15 October 2003 and Amendment 1 approved by CEN on 29 December 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:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12733:2001+A1:2009: ESIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 2 Contents Foreword . 4 Introduction . 5 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 7 4 List of hazards . 8 5 Safety requirements and/or measures . 8 5.1 General . 8 5.2 Engine starting and stopping devices . 8 5.3 Manual controls . 9 5.4 Marking of controls. 10 5.5 Controls of the movement of the machine and of the blade(s) . 10 5.6 Reverse gear . 11 5.7 Handlebars . 11 5.8 Pressurized components . 11 5.9 Liquid spillage . 11 5.10 Exhaust system. 11 5.11 Steering mechanism . 14 5.12 Brakes . 16 5.13 Electrical installations . 17 5.14 Noise . 17 5.15 Vibration . 17 6 Specific requirements . 18 6.1 Sickle bar mowers . 18 6.2 Grassland mowers . 19 6.3 Flail mowers . 30 6.4 Scrub clearing machines . 32 7 Information for use . 35 7.1 Instruction handbook . 35 7.2 Marking . 36 Annex A (normative)
List of hazards . 37 Annex B (normative)
Noise test code for motor mowers - Engineering method (grade 2) . 42 B.0 Scope . 42 B.1 A-weighted sound power level determination . 42 B.2 A-weighted emission sound pressure level determination . 44 B.3 Requirements for test floor . 44 B.4 Installation, mounting and operating conditions . 44 B.5 Measurement uncertainties and declaration of noise emission values. 45 B.6 Information to be recorded and reported . 45 Annex C (normative)
Vibration measurement of motor mowers . 46 C.1 Quantities to be measured . 46 C.2 Instrumentation . 46 C.3 Measurement direction and measurement location. 46 C.4 Test procedure . 47 C.5 Measurement procedure . 48 C.6 Determination of the measurement result . 49 Annex D (normative)
Foot probe test . 50 D.1 Test equipment . 50 D.2 Test method . 50 D.3 Test acceptance . 50 Annex E (normative)
Material of protective skirts . 52 SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 3 E.1 Tearing resistance test. 52 E.2 Perforation resistance test . 52 E.3 Wear resistance test . 52 Annex F (normative)
Corrugated fibreboard penetration tests on grassland mowers - Test enclosure wall panels (see 6.2.2.2.4.2) . 53 F.1 Purpose. 53 F.2 Test fixture . 53 F.3 Fibreboard samples . 53 F.4 Procedure . 53 F.5 Acceptance criteria . 53 Annex G (normative)
Target elevation areas. 55 G.1 Lower elevation target. 55 G.2 Middle elevation target . 55 G.3 Top elevation target . 55 G.4 Operator target area . 55 Annex H (normative)
Test enclosure . 56 H.1 Base . 56 H.2 Target composition . 56 Annex I (normative)
Thrown object test for flail mower . 59 I.1 Principle . 59 I.2 Test installation . 59 I.3 Test procedure . 62 I.4 Test result . 63 I.5 Acceptance criteria . 63 Annex J (normative)
Thrown object test for scrub clearing machines . 64 J.1 Test equipment . 64 J.2 Test method . 64 J.3 Data sheet - Thrown object test for scrub clearing machine . 66 Annex K (informative)
Example of a material and construction fulfilling the requirements for an artificial surface . 68 K.1 Material . 68 K.2 Construction . 68 Annex L (informative)
Examples of machines. 71 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by Directive 98/79/EC"""" . 72 Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 73 Bibliography . 74
SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 4 Foreword This document (EN 12733:2001+A1:2009) has been prepared by Technical Committee CEN/TC 144 "Tractors and machinery for agriculture and forestry", the secretariat of which is held by AFNOR. 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 September 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This European Standard was approved by CEN on 21 January 2001 and includes Corrigendum 1 issued by CEN on 15 October 2003 and Amendment 1 approved by CEN on 29 December 2008. This document supersedes EN 12733:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". The modifications of the related CEN Corrigendum have been implemented at the appropriate places in the text and are indicated by the tags ˜ ™. 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." Annexes A, B, C, D, E, F, G, H, I and J are normative. Annexes K and L are informative. 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. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 5 Introduction The extent to which hazards are covered is indicated in the scope of this standard. 1 Scope This standard specifies safety requirements and their verification for design and construction of pedestrian controlled motor mowers with rotary or reciprocating cutting blades used in agricultural, forestry and landscaping to cut and/or mulch grass or similar plants or scrub and woody vegetation. For the purposes of this standard the following types of pedestrian controlled machines are considered to be motor mowers:  flail mowers;  grassland mowers;  scrub clearing machines;  sickle bar mowers. This standard applies also to multipurpose machines when are used for cutting or mulching grass or scrub. This standard does not cover lawn mowers (see EN 836), engine driven brush cutters and grass trimmers (see EN ISO 11806) or other lawn maintenance equipment. This standard describes methods for the elimination or reduction of hazards arising from the use of motor mowers. Additionally, it specifies the type of information to be provided by the manufacturer on safe working practices. Environmental aspects have not been considered in this standard. This standard applies primarily to machines which are manufactured after the date of issue of the standard. 2 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 these publications apply to this European Standard only when incorporated in it 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+A1:1995, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles and specifications. EN 294:1992, Safety of machinery — Safety distances to prevent danger zones being reached by the upper limbs. EN 709:1997, Agricultural and forestry machinery — Pedestrian controlled tractors with mounted rotary cultivators, motor hoes, motor hoes with drive wheel(s) — Safety. EN 836:1997, Garden equipment — Powered lawnmowers — Safety. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 6 CR 1030-1:1995:1995, Hand-arm vibration — Guidelines for vibration hazards reduction — Part 1: Engineering methods by design of machinery. EN 1033:1995, Hand-arm vibration — Laboratory measurement of vibration at the grip surface of hand-guided machinery – General. EN ISO 354:1993, Acoustics — Measurement of sound absorption in a reverberation room (ISO 354:1985). EN 60651:1994, Sound level meters (IEC 60651:1993). EN 60804:1994, Integrating-averaging sound level meters (IEC 60804:1985 and A1:1989). EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994). ISO 3767-1:1991, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Symbols for operator controls and other displays — Part 1: Common symbols. ISO 3767-3:1995, 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. EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment
(ISO 4871:1996). EN ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995). EN ISO 11688-1:1998, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995). EN ISO 11688-2:2000, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 2: Introduction to the physics of low-noise design. ISO 2758:1983, Paper — Determination of bursting strength. ISO 3789-1:1982, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Location and method of operation of operator controls — Part 1: Common controls. ISO 5718-1:1989, Harvesting equipment — Flat blades for rotary mowers — Specifications — Part 1: Type A flat blades. ISO 5718-2:1991, Harvesting equipment — Flat blades for rotary mowers — Part 2: Specifications for type B flat blades. ISO 11102-1:1997, Reciprocating internal combustion engines — Handle starting equipment — Part 1: Safety requirements and tests. ISO 11102-2:1997, Reciprocating internal combustion engines — Handle starting equipment — Part 2: Method of testing the angle of disengagement. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 7 3 Terms and definitions For the purposes of this standard, the terms and definitions given in EN 292-1:1991 and EN 292-2:1991/A1:1995 apply together with the following: 3.1 sickle bar mower motor mower which uses a power source to reciprocate a knife or knives to provide a shearing action with a stationary cutter bar or movable knife (see Figure L.1) NOTE Adapted from EN 836:1997. 3.2 rotary cutting blade cutting blade on which one or more knives or several blades fixed on drums or discs rotate around a vertical or horizontal axis 3.3 grassland mower motor mower with rotary cutting blade(s) rotating about a vertical axis designed for cutting or mulching high grass, the cutting blade protective enclosure of which is not fully enclosing (see Figure L.2). The minimum cutting height is limited by design to 50 mm 3.4 flail mower grass-cutting machine with a multiplicity of free-swinging cutting elements that rotate about an axis parallel to the cutting plane and cut by impact [EN 836:1997] 3.5 scrub clearing machine motor mower with rotary cutting blade(s) rotating about a vertical axis designed for cutting scrub and woody vegetation. There is no ground support in front of cutting blade(s). The front of the machine is supported at either side by skids, not wheels. At the front the cutting blade(s) enclosure may be open (see Figure L.3) 3.6 discharge opening opening in the protective enclosure of the cutting blade through which the cut material can be ejected 3.7 discharge chute extension of the discharge opening generally used to safely guide the ejection of the material coming from the cutting blade 3.8 handlebar device equipped with grips enabling the machine to be manually controlled [EN 709:1997] 3.9 maximum operating engine speed highest engine speed obtainable when adjusted in accordance with the machine manufacturer’s specifications and/or instructions with the cutting blades engaged NOTE Adapted from EN 836:1997. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 8 3.10 normal operation any use of the machine which is reasonably foreseeable, as seen by the user, and which is consistent with such activities as cutting grass, starting, stopping, fuelling, or connecting to (or disconnecting from) a power source NOTE Adapted from EN 836:1997. 3.11 normal use normal operation, plus routine maintenance, servicing, cleaning, transporting, attaching or removing accessories, and making ordinary adjustments as determined by the manufacturer's instructions [EN 836:1997] 3.12 multipurpose machine machine on which different attachments can be mounted 4 List of hazards The hazards, among those appearing in EN 292-1:1991, EN 292-2:1991 and EN 292-2:1991/A1:1995 considered as applicable to the machines covered in this standard, are given in annex A. 5 Safety requirements and/or measures 5.1 General Unless otherwise specified in this standard, the machine shall conform to the requirements of Tables 1, 3, 4 and 6 of EN 294:1992. 5.2 Engine starting and stopping devices 5.2.1 Primary starting A switch operated by a removable key, or a similar device shall be provided unless a manual starter is the only means of engine starting. Engine starting controls may only be outside the hand/foot reach zone defined in 5.3 if starting can only be accomplished with the cutting blade drive disengaged. With the exception of hand cranks (see ISO 11102-1:1997 and ISO 11102-2:1997) starting devices shall be integral with the machine (e.g. recoil pull start). Loose belts, cables, etc. are not accepted. If starting is achieved by means of a hand crank it shall be equipped with a device that disconnects the hand crank immediately when the engine starts and prevents its connection when the engine is running or kick-back during starting. 5.2.2 Secondary starting If a secondary or an auxiliary starting device is provided it shall also conform to the requirements of the primary starting device. 5.2.3 Stopping A stopping device shall be provided. The device shall not depend on sustained manual pressure for its continued operation. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 9 5.3 Manual controls The hand operated controls for:  clutch;  brakes;  traction gearbox (within the selected range);  reversing device;  steering system;  control of the engine working speed;  hold-to-run control (see 5.5);  blade clutch lever;  stop control; shall be within the “hand reach zone” (see below and Figure 1). Gear box range, parking brake and differential lock controls may be located in the “foot reach zone” (see below and Figure 1). Controls, other than those in the lists above, which are only used before work is started or after it is finished may be located outside the “hand/foot reach zones”. “Hand reach zone” is the truncated hemispherical volume of radius R1 = 800 mm (see Figure 1). The centre of the hemisphere is located at point B (the midpoint of a line joining the handlebar grip ends when the grips are set to a height of 800 mm above the ground, or set to the next available lower height setting where this is not available). The flat face of the hemisphere is on the vertical plane through the line joining the handlebar grip ends. The hemisphere is truncated bellow by a horizontal plane positioned 450 mm above the ground. “Foot reach zone” is the truncated hemispherical volume of radius R2 = 400 mm (see Figure 1). The centre of the hemisphere is located at point C (800 mm forward of point B and 100 mm above the ground). The flat face of the hemisphere is on the horizontal plane at 100 mm above the ground. The hemisphere is truncated by a vertical plane positioned rearward of the centre of the hemisphere at the point where it would be intersected by a horizontal plane 450 mm above the ground. SIST EN 12733:2001+A1:2009



EN 12733:2001+A1:2009 (E) 10 Dimensions in millimetres
Figure 1 — Volume of “hand reach zone” and “foot reach zone” 5.4 Marking of controls Controls, whose purpose is not obvious, shall have the function, direction and/or method of operation clearly identified by a durable label or mark. Detailed instructions on the operation of all controls shall be provided in the instruction handbook. If symbols are used for marking controls, they shall correspond to those in ISO 3767-1:1991 and ISO 3767-3:1995. 5.5 Controls of the movement of the machine and of the blade(s) On motor mowers which are self-propelled it shall be possible to engage or disengage the traction drive when the cutting blade is operating. The movement of the machine and the movement of the blade(s) shall be possible only by actuating hold-to-run controls. The hold-to-run controls shall be located on at least one of the hand
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