SIST EN 709:1998+A4:2010
(Main)Agricultural and forestry machinery - Pedestrian controlled tractors with mounted rotary cultivators, motor hoes, motor hoes with drive wheel(s) - Safety
Agricultural and forestry machinery - Pedestrian controlled tractors with mounted rotary cultivators, motor hoes, motor hoes with drive wheel(s) - Safety
This European Standard specifies safety requirements and testing for design and construction of, pedestrian controlled tractors with mounted rotary cultivators with the cultivator rotating axis horizontal and perpendicular to the direction of motion of the machine, motor hoes and motor hoes with drive wheel(s), all as used in agriculture, forestry, landscaping and gardening (including amenity use).
It describes methods for the elimination or reduction of risks arising from their use. In addition, it specifies the type of information to be provided by the manufacturer on safe working practices.
This European Standard does not cover the requirements to fulfil national road traffic regulations such as lights, steering and braking.
Environmental aspects have not been considered in this standard.
This European Standard applies primarily to machines which are manufactured after the date of issue of the standard.
Maschinen für die Land- und Forstwirtschaft - Einachstraktoren mit angebauter Fräse, Motorhacken, Triebradhacken - Sicherheit
Diese Europäische Norm legt sicherheitstechnische Anforderungen und Prüfungen für die Gestaltung und Konstruktion von Einachstraktoren mit angebauter Fräse fest, deren Drehachse horizontal oder vertikal zur Bewegungsrichtung der Maschine angeordnet ist, sowie von Motorhacken und Triebradhacken, die in der Land- und Forstwirtschaft sowie der Landschafts- und Gartenpflege (einschließlich Freizeitbereich) eingesetzt werden. Sie beschreibt Maßnahmen zur Vermeidung oder Verminderung der sich aus dem Gebrauch ergebenden Gefährdungen. Außerdem gibt sie Informationen über sicheres Arbeiten, die vom Hersteller zur Verfügung zu stellen sind. Diese Europäische Norm enthält keine Anforderungen zur Erfüllung nationaler Straßenverkehrsvorschriften wie beispielsweise an Beleuchtung, Lenkung und Bremsen. Umweltaspekte wurden in dieser Norm nicht in Betracht gezogen. Diese Europäische Norm gilt in erster Linie für Maschinen, die nach dem Ausgabedatum der Norm hergestellt worden sind.
Matériel agricole et forestier - Motoculteurs avec fraises portées, motobineuses et fraises à roue(s) motrice(s) - Sécurité
La présente norme européenne détermine les prescriptions de sécurité et les vérifications pour la conception et la construction des motoculteurs équipés de fraises dont l'axe de rotation est horizontal et perpendiculaire au sens d'avancement de la machine, des motobineuses et des fraises à roue(s) motrice(s), utilisés en agriculture, en foresterie, pour l'entretien des espaces verts et pour le jardinage (y compris à usage de loisir).
Elle décrit les méthodes pour éliminer ou réduire les risques inhérents à leur utilisation. En outre, elle spécifie le type d'informations que le fabricant doit donner sur les pratiques d'utilisation sûre.
La présente norme ne couvre pas les prescriptions permettant de satisfaire aux réglementations routières nationales telles que l'éclairage, le système de direction et le freinage.
Les aspects liés à l'environnement n'ont pas été pris en compte dans cette norme.
La présente norme européenne s'applique avant tout aux machines fabriquées après la date de publication de la norme.
Kmetijski in gozdarski stroji - Enoosni traktorji s priključenim prekopalnikom, motorni prekopalniki in motorni prekopalniki s pogonskim(a) kolesom(a) - Varnost
Ta evropski standard opredeljuje varnostne zahteve in preskušanje za načrtovanje in konstrukcijo enoosnih traktorjev s priključenim prekopalnikom, z vodoravno rotirajočo osjo prekopalnika in navpično glede na smer gibanja stroja, motorne prekopalnike in motorne prekopalnike s pogonskim(a) kolesom(a), vsi navedeni stroji kot se uporabljajo v kmetijstvu, gozdarstvu, krajinskem oblikovanju in vrtnarstvu (vključno z uporabo v javne namene). Opisuje metode za preprečevanje ali zmanjševanje tveganj, ki izvirajo iz njihove uporabe. Poleg tega opredeljuje vrste podatkov, ki jih mora zagotoviti proizvajalec glede varnih delovnih postopkov. Ta evropski standard ne zajema zahtev za izpolnjevanje predpisov posameznih držav v cestnem prometu, kot so luči, krmiljenje in zaviranje. Okoljski vidiki v tem standardu niso obravnavani. Ta evropski standard velja predvsem za stroje, ki so bili izdelani po datumu izdaje tega standarda.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2010
.PHWLMVNLLQJR]GDUVNLVWURML(QRRVQLWUDNWRUMLVSULNOMXþHQLPSUHNRSDOQLNRP
PRWRUQLSUHNRSDOQLNLLQPRWRUQLSUHNRSDOQLNLVSRJRQVNLP D NROHVRP D 9DUQRVW
Agricultural and forestry machinery - Pedestrian controlled tractors with mounted rotary
cultivators, motor hoes, motor hoes with drive wheel(s) - Safety
Maschinen für die Land- und Forstwirtschaft - Einachstraktoren mit angebauter Fräse,
Motorhacken, Triebradhacken - Sicherheit
Matériel agricole et forestier - Motoculteurs avec fraises portées, motobineuses et fraises
à roue(s) motrice(s) - Sécurité
Ta slovenski standard je istoveten z: EN 709:1997+A4:2009
ICS:
65.060.10 Kmetijski traktorji in prikolice Agricultural tractors and
trailed vehicles
65.060.20 Oprema za obdelovanje tal Soil-working equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 709:1997+A4
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2009
ICS 65.060.10; 65.060.20 Supersedes EN 709:1997+A2:2009
English Version
Agricultural and forestry machinery - Pedestrian controlled
tractors with mounted rotary cultivators, motor hoes, motor hoes
with drive wheel(s) - Safety
Matériel agricole et forestier - Motoculteurs avec fraises Maschinen für die Land- und Forstwirtschaft -
portées, motobineuses et fraises à roue(s) motrice(s) - Einachstraktoren mit angebauter Fräse, Motorhacken,
Sécurité Triebradhacken - Sicherheit
This European Standard was approved by CEN on 4 March 1997 and includes Amendment 1 approved by CEN on 1 July 1999,
Amendment 2 approved by CEN on 29 December 2008 and Amendment 4 approved by CEN on 24 October 2009.
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 Ref. No. EN 709:1997+A4:2009: E
worldwide for CEN national Members.
Contents Page
Foreword .4
Introduction .5
1 Scope .5
2 Normative references .5
3 Definitions .6
4 List of hazards .6
5 Safety requirements and/or measures .7
5.1 General .7
5.2 Starting device .7
5.3 Manual controls .8
5.4 Identification of controls .9
5.5 Controls of the movement of the machine and of the tool . 10
5.6 Reverse gear . 12
5.7 Guards for moving parts . 12
5.7.1 General . 12
5.7.2 Soil working tool . 12
5.8 Handlebars . 16
5.8.1 General . 16
5.8.2 Motor hoes . 16
5.9 Exhaust system. 17
5.9.1 Protection against exhaust gas . 17
5.9.2 Protection against hot surfaces . 18
5.10 Steering mechanisms . 19
5.10.1 General . 19
5.10.2 Measurement of the steering force . 19
5.11 Brakes for pedestrian controlled tractors . 20
5.12 Electrical installation . 22
5.13 Noise . 22
5.13.1 General . 22
5.13.2 Operating conditions . 22
5.14 Vibration . 22
5.14.1 !!Reduction by design and protective measures"" . 22
!! ""
5.14.2 Reduction by information . 23
5.14.3 Vibration measurement . 23
6 Information for use . 26
6.1 Instruction handbook . 26
6.2 Marking . 28
Annex A (normative) List of hazards . 30
Annex B (informative) Examples of machines . 36
Annex C (normative) !!Measurement of vibration at the handlebars"" . 38
!! ""
C.1 General . 38
C.2 Quantities to be measured . 38
C.3 Instrumentation . 38
C.3.1 General . 38
C.4 Fastening of the transducer . 38
C.5 Calibration . 39
C.6 Measurement location and direction . 39
C.7 Pre - test . 39
C.8 Test conditions . 39
C.8.1 Machine set-up . 39
C.8.2 Operating conditions . 39
C.8.3 Operator. 40
C.9 Measurement procedure . 40
C.10 Test report . 40
Annex ZA (informative) ''Relationship between this European Standard and the Essential
''
Requirements of EU Directive 98/37/EC, amended by Directive 98/79/EC(((( . 42
Annex ZB (informative) ''''Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC(((( . 43
Bibliography . 44
Foreword
This document (EN 709:1997+A4:2009) 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 June 2010, and conflicting national standards shall be withdrawn at
the latest by December 2010.
This document includes Amendment 1, approved by CEN on 1999-07-01, Amendment 2, approved by CEN
on 2008-12-29 and Amendment 4, approved by CEN on 2009-10-24.
This document supersedes EN 709:1997+A2:2009.
The start and finish of text introduced or altered by amendment is indicated in the text by tags
!", # $ and '(.
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.$
The Annex A is normative and contains the "List of hazards".
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.
Introduction
The extent to which hazards are covered is indicated in the scope of this standard.
In addition, machines shall comply – as appropriate – with EN 292 for hazards which are not dealt with and
especially with Annex A of EN 292-2:1991/A1:1995 when EN 292 does not give precise requirements.
1 Scope
This European Standard specifies safety requirements and testing for design and construction of, pedestrian
controlled tractors with mounted rotary cultivators with the cultivator rotating axis horizontal and perpendicular
to the direction of motion of the machine, motor hoes and motor hoes with drive wheel(s), all as used in
agriculture, forestry, landscaping and gardening (including amenity use).
It describes methods for the elimination or reduction of risks arising from their use. In addition, it specifies the
type of information to be provided by the manufacturer on safe working practices.
This European Standard does not cover the requirements to fulfil national road traffic regulations such as
lights, steering and braking.
Environmental aspects have not been considered in this standard.
This European 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.
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 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 563:1994, Safety of machinery – Temperatures of touchable surfaces – Ergonomics data to establish
temperature limit value for hot surfaces.
EN 1033:1995, Hand-arm vibration – Laboratory measurement of vibration at the grip surface of hand-guided
machinery – General.
prEN 1553:1996, Agricultural, forestry, landscaping and garden machinery – Common requirements – Safety.
!CR 1030-1:1995, Hand-arm vibration – Guidelines for vibration hazards reduction – Part 1: Engineering
methods by design of machinery
ISO 5805:1981, Mechanical vibration and shock affecting man - Vocabulary"
EN ISO 3767-1:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment –
Symbols for operator controls and other displays – Part 1: Common symbols.
EN ISO 3767-3:1996, 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.
3 Definitions
For the purposes of this standard, the definitions given in EN 292-1:1991 apply together with the following:
3.1
pedestrian controlled tractor
agricultural self-propelled machine designed to be pedestrian controlled, capable of driving and/or pulling
different working tools (see Figure B.1)
3.2
tool
working element which can be adapted to a pedestrian controlled tractor
3.3
mounted rotary cultivator
tool used for working the soil composed of a group of rotating elements which can be adapted to a pedestrian
controlled tractor.
3.4
motor hoe
agricultural self-propelled machine designed to be pedestrian controlled with or without support wheel(s), in
such a way that its working elements act as hoeing tools to ensure propulsion (see figure B.2)
3.5
motor hoe with drive wheel(s)
agricultural self-propelled machine designed to be pedestrian controlled and propelled by one or various
wheels directly actuated from the engine and equipped with hoeing tools (see figure B.3).
3.6
handlebar
device equipped with grips enabling the machine to be manually controlled.
''''3.7
maximum operating engine speed
highest engine speed obtainable with the tools engaged and with the machine supported such that the
working tools are clear of any contact with the ground(
4 List of hazards
The list of significant hazards dealt with in this standard is given in Annex A.
Annex A also indicates the hazards which have not been dealt with.
5 Safety requirements and/or measures
5.1 General
Unless otherwise specified in this standard, the machine shall comply with the requirements of tables 1, 3, 4
and 6 of EN 294:1992.
The requirements of prEN 1553 apply where relevant.
5.2 Starting device
In addition to the hold-to-run controls (see 5.5) the machines shall be equipped with a device which prevents
the engine starting if the start-up can induce rotation of the wheels or movement of the tool.
The type of device which can be considered as fulfilling this requirement is one which, for example, by a
mechanical linkage only allows the engine to start when the gear lever is in neutral and the tool is declutched.
Such a device is not necessary if, when starting the machine according to the instructions, the operator is not
required to be in the danger zone. The danger zone is taken as the longitudinal band defined by the width of
the machine and tool extending both forward and rearwards from it. If the machine is not provided with reverse
gear, the danger zone to the rear of the machine is limited to a distance of 550 mm as measured from the rear
extremity of the protective devices for moving parts (see figure 1).
In the case of a machine provided with reverse gear, the danger zone to the rear includes the whole
longitudinal zone limited by the working width of the equipment.
Should the operator have to lean on the machine to start the engine, the appropriate place shall be indicated
or an identified support provided with a corresponding indication.
With the exception of hand cranks (see ISO/DIS 11102-1 and ISO/DIS 11102-2), 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.
Dimensions in millimetres
Figure 1 — Limits of the danger zone when operating the starting device for machines with no reverse
gear
5.3 Manual controls
The height of the handlebar grips in relation to the ground shall be adjustable.
The following manually operated controls shall be within the "hand reach zone" from the normal operator
working position:
clutch;
brakes;
gearbox (within the selected range);
reversing device;
steering system;
engine working speed;
hold-to-run control (see 5.5);
tool clutch lever;
stop control.
The "hand reach zone" (see figure 2) is defined as the truncated hemispherical volume of radius R = 800 mm
with its centre at the midpoint (point B in figure 2) 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 lowest height setting where this is not
available, with its flat face on the vertical plane tangential to the handlebar grip ends and facing rearwards,
and truncated below by a plane parallel to the ground positioned 450 mm above the ground.
'An engine stopping device shall be provided. The engine stopping device shall not depend on sustained
manual pressure for its operation.(
Dimensions in millimetres
Figure 2 — "Hand reach zone" volume
5.4 Identification of controls
The controls used for driving the working tool and for locking the differential in their different positions shall be
marked.
The gear positions (including the neutral position) shall be durably and clearly marked and located within the
field of vision of the operator.
Detailed instructions on the operation of all controls shall be provided in the instruction handbook.
Symbols in accordance with EN ISO 3767-1:1995 and EN ISO 3767-3:1996 shall be used as appropriate.
5.5 Controls of the movement of the machine and of the tool
'The machine shall be equipped with a hold-to-run control(s).( All movements of the machine and of the
working tool shall be stopped when the hold-to-run control(s) is (are) released.
'Releasing the hold-to-run control(s) shall not stop the engine. For electrical powered machines, this
requirement does not apply.
The force required to maintain the hold-to-run control in the engaged position shall not be greater than 27,5 N
when the hold-to-run control is located on only one handlebar.
If the hold-to-run control is located so that it can be operated by either or both hands when they are holding the
handle-grips, the force required to maintain the hold-to-run control in the engaged position shall not be greater
than 35 N.
The measuring of these values shall be carried out with the following method:
The measurement shall be performed with a device having an accuracy of ± 0,5 % (e.g. dynamometer) with
the engine stopped. The force (F) required to maintain the hold-to-run control shall be measured at 10 mm
from the end of the hold-to-run control. The measurement shall be taken when the control is at the end of the
displacement run or when it comes in contact with the handlebar grip, see Figure 3.
Dimensions in millimetres
F
Figure 3a
F1
Figure 3b
F
Isometric view Lateral view
Figure 3c
Key
1 end of the control
F force required to maintain the hold-to-run control
Figure 3 – Locations of the force F
The hold-to-run control shall be designed so that the tool or wheels can not move without intentional action
(e.g. a manual control requiring two different action to be operated). This requirement shall be verified by
functional test.(
The hold-to-run control(s) shall not extend beyond the end of the handlebar grips.
The movement of the machine or of the tools shall not start unless the operator is able to grip both the
control(s) and the handlebar grip.
5.6 Reverse gear
In all machines with reverse gear, it shall not be possible to go directly from forward to reverse motion. This
requirement is fulfilled, for example, by providing a neutral position.
In the case of pedestrian controlled tractors and motor hoes with drive wheel, it shall not be possible to
operate the working tool and the reverse gear simultaneously (e.g. by having a mechanical interlock on the
reverse gear).
For motor hoes without drive wheel, the maximum design reverse speed at rated engine speed shall not
exceed 1 m/s.
5.7 Guards for moving parts
5.7.1 General
5.7.1.1 Moving transmission parts which generate hazards shall be protected by means of fixed guards.
5.7.1.2 If, according to the instruction handbook, frequent access is foreseen e.g. for adjustment or
maintenance, guards shall be used which remain attached to the machine (e.g. by means of hinges), and
which can only be opened by using a tool and which automatically lock without the use of a tool.
5.7.1.3 If this type of guard is not used, movable guards as specified in 4.2.2.3 of EN 292-2:1991 shall be
provided, which:
Cause the dangerous movement to stop before reaching the danger zone; or
Do not open until the dangerous movement ceases.
5.7.2 Soil working tool
The operator driving the machine shall be protected by the design of the machine from unintentional contact
with the soil working tool.
The protective device shall be designed with a minimum thickness of 2 mm of steel or equivalent material, and
fulfil the requirements in 5.7.2.1 and 5.7.2.2.
NOTE Subsequent revision of this standard will provide adequate test methods.
5.7.2.1 Pedestrian controlled tractors and motor hoes with drive wheel
The tools shall have a full cover from over the full working width with no openings. The cover shall extend
forward by an angle of at least 60° to the vertical pane which cuts through the rotating axis of the working tool
(see 'Figure 4().
The upper covering shall also extend rearwards and downwards (depending on the length of the handlebars)
so that the minimum values indicated in table 1 for m and n are reached (see %Figure 4&). Hinged
covering is allowed providing that it always remains in contact with the soil without any external action during
work. 'The rear edge of the rear covering shall be so designed that it does not present a sharp edge (e.g.
by rounding off).(
''Table 1 — Clearance from the handlebar grips to the working tool and minimum dimensions of the
''
guard devices
Dimensions in millimetres
l m n Position of point D
l ≥ 700 150 20 3 (G)
600 ≤ l < 700 180 1/3 r 2
a
600 ≤ l < 700 230 2/3 r 1
a
For machines having an engine power up to 4 kW or for machines having a mass less than 120 kg only the
requirements of the third line apply.
(
Dimensions in millimetres
Where:
A is the intersection of the ground line with the vertical from the centre of the wheel;
B is the point on the line AC located at 1/3 r from C;
C is the axis of rotation of the working tool;
D is the rear end of the working tool's protective device;
E is the intersection of the extension of the straight line FB with a line parallel to and 20 mm below the line AC;
F is the intersection between the protective device and the line passing through B at an angle of 60° from the
vertical passing through C;
G is the point on the straight line through E parallel to AC located 150 mm from the periphery of the working
tool from the point H;
H is the rearmost point at which the extension of line AC intersects the periphery of the working tool;
h is the height of the end of the handlebar grips above the ground equal to 800 mm or the nearest available
height setting;
l is the distance, parallel to the ground, between the rearmost periphery of the working tool and the vertical
plane projected downwards from the ends of the handlebar grips when h = 800 mm or at the nearest available
height setting;
m is the distance parallel to AC, between the rear end of guard D and the tangent to the periphery of the
working tool at point H;
n is the distance to D from and perpendicular to the line AC;
r is the maximum turning radius of the working tool.
Figure ''4(( — Clearance between the ends of the handlebar grips and the working tool and
'' ((
protection of the working tool
The minimum clearance distance, measured horizontally, between the periphery of the working tool on the
operator's side and the rear end of the handlebar grips, in the position shown in 'Figure 4(, shall
correspond to the values indicated in table 1.
The side elements of the covering shall coincide, as a minimum, with the area FBEG and correspond to the
measurements indicated in 'Figure 4( and table 1. They can be extended to the working tool.
5.7.2.2 Motor hoes
The rotating parts of the working tool shall be protected by a fixed, solid protective device covering them
rearward to an angle of, at least, 60° to the vertical (see 'Figure 5().
The minimum dimensions of the protective guard shall be as given in table 2.
Table 2 — Minimum dimensions of the guard
Dimensions in millimetres
Width of the tool Minimum length of the protective device
≤ 600 Width of the tool
> 600 600
Dimensions in millimetres
Figure ''''5(((( — Guarding of the rotating parts of the working tool
The distance measured parallel to the ground between the rearmost periphery of the working tool and the
vertical plane projected downwards from the ends of the handlebar grips shall be a minimum of 900 mm.
This requirement shall be met with the handlebars in the position as shown in 'Figure 5(.
5.8 Handlebars
5.8.1 General
The handlebars shall be rigid relative to one another, and shall be capable of withstanding, without
deformation, a force of 500 N applied downward to them when in the position shown in Figure 2.
5.8.2 Motor hoes
Lateral adjustment of the handlebars shall be limited to a maximum of 35° either side of the central axis of the
handlebars. The angle shall be measured at the intersection between the central axis of the handlebars and
the longitudinal axis of the working tools (see 'Figure 6().
Figure ''''6(((( — Lateral adjustment of the handlebars
A deterrent crossbeam shall be placed between the handlebars, located at a minimum of 550 mm from the
tool periphery to prevent the operator approaching (see 'Figure 7( a). This crossbeam is not necessary if
at 550 mm from the tool the distance between the handlebars is less than 310 mm (see 'Figure 7( b).
Dimensions in millimetres
a) with crossbeam b) without crossbeam
Figure ''''7(((( — Relative position of the handlebars
5.9 Exhaust system
5.9.1 Protection against exhaust gas
The exhaust gas outlet shall be arranged in such a manner that the fumes are not directed towards the
operator.
The requirement can be fulfilled by directing the outlet of gases sideways between the angles of 60° and 120°
to the longitudinal axis of the machine.
5.9.2 Protection against hot surfaces
5.9.2.1 Requirements
A guard shall be provided to prevent unintentional contact with any exposed engine exhaust components
larger than 10 cm which have a surface temperature greater than 80°C at 20°C + 3°C ambient temperature
during normal starting, mounting and operation of the machine.
The temperature of the guard, when provided, shall not exceed 80°C measured in the above described
conditions.
NOTE The temperature of 80°C is to be reviewed at the next revision of this standard taking into account any
relevant values given in EN 563.
5.9.2.2 Test equipment
The temperature measuring equipment shall have an accuracy of + 4°C.
5.9.2.3 Test method
The engine shall be operated at its maximum operating speed until the surface temperatures stabilize.
The test shall be conducted in the shade.
If the test is conducted at an ambient temperature outside of the nominal 20°C + 3°C the reported
temperatures shall be determined by correcting the observed temperature by adding the difference between
the 20°C and the actual test ambient temperature.
Identify the hot surface area(s) on the engine exhaust system.
When the distance between the identified hot area and the nearest control is in excess of 100 mm, cone A as
shown in 'Figure 8( shall be used. For distances less than 100 mm between the identified hot area and
the nearest control, cone B as shown in 'Figure 8( shall be used.
For cone A with the axis of the cone anywhere between 0° and 180° to the horizontal and with the point of the
cone in a downward to horizontal direction, move the cone towards the hot surface. The cone shall not be
moved in an upwards direction. When moving the cone, determine if contact is made with the hot surface
area(s) with the cone tip or conical surface of the cone.
Cone B shall be moved in any direction.
5.9.2.4 Test acceptance
When tested in accordance with 5.9.2.3, using the test equipment given in 5.9.2.2 the tip or conical surface of
cone A or B shall not make contact with the hot surface of the exhaust system as described in 5.9.2.1.
Dimensions in millimetres
Figure ''''8(((( — Test cones
5.10 Steering mechanisms
5.10.1 General
The machine design shall allow for easy manual changing of direction.
Easy means of direction change may be considered achieved if:
The steering force measured in accordance with 5.10.2 does not exceed 180 N; or
The mass of the machine, including the working tools, does not exceed 120 kg; or
The transmission is fitted with a differential gear or with a device permitting the independent
disengagement of the driving wheels from the handlebars.
5.10.2 Measurement of the steering force
a) the measurement shall be carried out at point B with the working tool mounted and the machine
stationary on a flat, dry concrete surface (see 'Figure 9();
b) the handlebars shall be placed in their normal working position and locked during the test so that they
cannot involuntarily swing out laterally, with the grips at 800 mm above the ground, or, should this not be
possible owing to the adjustment limitations, to the next lower height. Metallic rod crode shall be placed
between the two handlebar grips rigidly, the middle point of this rod identifies the measuring point B;
c) the machine shall be fitted with the wheels and tyres recommended by the manufacturer. The tyres shall
be inflated to the maximum recommended pressure and the wheels adjusted to the maximum
recommended track width;
d) using a cable at least 4 m long, which is maintained vertical and fixed at the measuring point B, the
machine shall be tilted forward until the working tool is just above the surface of the ground.
e) The steering force shall be applied at measuring point B, perpendicularly to the longitudinal central plane,
until the machine moves through, at least 5°.
Dimensions in millimetres
Figure ''''9(((( — Measurement of the steering force in pedestrian controlled tractors and motorhoes
with drive wheel
'
5.11 Brakes for pedestrian controlled tractors
5.11.1 General
For pedestrian controlled tractors, service and parking brake systems shall be provided to stop the pedestrian
controlled tractor’s motion in both forward and reverse directions if a force of more than 250 N, applied at the
centre of the wheel axle and parallel to the slope, is required to hold the pedestrian controlled tractor, with the
mounted rotary cultivator touching the ground, on a 30 % (16,7°) slope.
For the test, the pedestrian controlled tractor shall be equipped with the tyres recommended by the
manufacturer having the least tread area in contact with the test surface. The surface shall be dry, smooth and
hard (e.g. concrete or equivalent test surface).
Service and parking brake systems shall be tested in accordance with 5.11.2 and 5.11.3.
If steering-assist brakes are also used for service brakes, it shall be possible to connect them in a way that
they apply both brakes with equal force.
If the pedestrian controlled tractor is equipped with steering brakes, these shall be capable of being combined
or activated simultaneously.
5.11.2 Service brake
5.11.2.1 Performance requirements
The pedestrian controlled tractor shall be equipped with a means of stopping its motion in both forward and
reverse directions within a braking distance of 0,19 m for each 1 km/h of speed, when tested in accordance
with 5.11.2.2.
5.11.2.2 Test method
Test stops shall be conducted on a substantially level (not to exceed 1 % gradient) dry, smooth, hard surface
roadway of concrete (or equivalent test surface).
When testing a pedestrian controlled tractor with separate clutch and brake control means, the clutch shall be
simultaneously disengaged with brake engagement.
The test shall be carried out in both forward and reverse directions at the maximum ground speed attainable.
Five test stops shall be carried out and the result is the mean of the five stopping distances.
5.11.3 Parking brake
5.11.3.1 General requirements
A parking brake shall be provided on pedestrian controlled tractors requiring a service brake.
The parking brake, whether hand-operated or not, may be in combination with the service brake.
An automatic parking brake, when provided, shall be activated when the transmission hold-to-run control is
released.
5.11.3.2 Performance requirements
The parking brake shall hold the pedestrian controlled tractor stationary facing both uphill and downhill, on a
30 % (16,7°) slope when tested in accordance with 5.11.3.3. The force required to engage and unlock the
brake shall not exceed 220 N.
5.11.3.3 Test method
5.11.3.3.1 Test equipment and condition: The test shall be conducted on 30 % (16,7°) slope with a
coefficient of friction such that the pedestrian controlled tractor does not slide down the slope.
The transmission shall be in neutral, the traction clutch disengaged and the engine off.
5.11.3.3.2 Test procedure: The pedestrian controlled tractor shall be positioned on the test slope with its
parking brake engaged and locked. The pedestrian controlled tractor shall be tested both with its front downhill
and its rear downhill.
5.11.3.3.3 Test acceptance: The pedestrian controlled tractor shall not move.(
5.12 Electrical installation
Electrical cables shall be protected if located in potentially abrasive contact with metal surfaces and shall be
resistant to, or protected against, contact with lubricant and fuel.
The wiring assembly shall, where possible, be grouped together, supported and located so that no portion is n
contact with the carburettor, metallic fuel lines, exhaust system, moving parts or sharp edges. Any metal
edges likely to be in contact with the cables shall be rounded or protected to prevent possible damage to the
cables by cutting or abrasion.
5.13 Noise
5.13.1 General
See 1.7.4 (f) in Annex A of EN 292-2:1991. The sound pressure and the sound power levels shall be
measured in accordance with 4.1.2 of prEN 1553:1996.
5.13.2 Operating conditions
The noise level measurements shall be carried out under the following operating conditions:
In the presence of an operator in the normal working position (holding the handlebars);
On hard ground (concrete or asphalt);
The tool disengaged;
Engine at 85% of the nominal engine speed.
5.14 Vibration
5.14.1 !!Reduction by design and protective measures
!!
The machine shall be designed to generate a vibration level as low as practicable. The main sources causing
vibration are:
oscillating forces from the engine;
tools;
unbalanced moving parts;
impact in gears, bearings and other mechanisms;
interaction between operator, machine and material being worked;
machine design related to mobility;
travelling speed, tyre(s) pressure.
NOTE CR 1030-1 gives general technical information on widely recognised technical rules and means to be followed
in the design of machines for low vibration solutions. Besides the vibration reduction of the source technical measures to
isolate the vibration source from the handle may be used, when appropriate, such as isolators and resonating masses.
5.14.2 Reduction by information
After taking possible technical measures for vibration reduction it is still recommended that the instruction
handbook precise, when appropriate:
the use of low-vibration operating modes, and/or limited time of operation;
the wearing of personal protection equipment (PPE).
5.14.3 Vibration measurement
The level of vibration on handlebar grips shall be measured in accordance with Annex C."
Figure ''''10(((( — Accelerometer positions
5.15 ''''Tool stopping
5.15.1 Tool stopping time
The tools of pedestrian controlled tractors and motor hoes shall stop from their maximum rotational speed
within 2 s after the operator releases the hold-to-run control.
The stopping time of the tool shall be measured according to clause 5.15.2.
For those machines that rely on the presence of a device (e.g. brake) to achieve the stopping time of the tools,
the test cycles according to clause 5.15.3 shall be carried out.
5.15.2 Measurement of tool stopping time
Prior to the test the machine shall be assembled and adjusted according to the manufacturers published
instructions for use. The machine shall be "run in" for a period as requested by the manufacturer or for 15 min
whichever is the less. During the "run in" period the hold-to-run control shall be operated 10 times.
The machine shall be mounted and instrumented in such a manner that the results of the test are not affected.
A device shall be provided to detect the moment of release of the hold-to-run control and another to detect
movement of the tool. The machine shall be supported such that the working tools are clear of any contact with
the ground.
The time recording measurement system shall have a total accuracy of 25 ms and any
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