EN ISO 4254-17:2022

SLOVENSKI STANDARD
01-junij-2022
Nadomešča:
SIST EN 13118:2001+A1:2009
SIST EN 13140:2001+A1:2010
Kmetijski stroji - Varnost - 17. del: Stroji za pobiranje gomoljnic (ISO 4254-17:2022)
Agricultural machinery - Safety - Part 17: Root crop harvesters (ISO 4254-17:2022)
Landmaschinen - Sicherheit - Teil 17: Hackfruchterntemaschinen (ISO 4254-17:2022)
Matériel agricole - Sécurité - Partie 17: Matériel de récolte de pommes de terre, de
betteraves à sucre et fourragères (ISO 4254-17:2022)
Ta slovenski standard je istoveten z: EN ISO 4254-17:2022
ICS:
65.060.50 Oprema za spravilo pridelkov Harvesting equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4254-17
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 65.060.50 Supersedes EN 13118:2000+A1:2009, EN
13140:2000+A1:2009
English Version
Agricultural machinery - Safety - Part 17: Root crop
harvesters (ISO 4254-17:2022)
Matériel agricole - Sécurité - Partie 17: Matériel de Landmaschinen - Sicherheit - Teil 17:
récolte de racines et tubercules (ISO 4254-17:2022) Hackfruchterntemaschinen (ISO 4254-17:2022)
This European Standard was approved by CEN on 17 January 2022.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4254-17:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 4

European foreword
This document (EN ISO 4254-17:2022) has been prepared by Technical Committee ISO/TC 23 "Tractors
and machinery for agriculture and forestry" in collaboration with 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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13118:2000+A1:2009 and EN 13140:2000+A1:2009.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral
part of this document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 4254-17:2022 has been approved by CEN as EN ISO 4254-17:2022 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery" to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and
Annex I of Directive 2006/42/EC
The relevant Essential Clause(s)/sub-clause(s) Remarks/Notes
Requirements of EU Directive of this EN
2006/42/EC
1.1.2.a) Principles of safety integration 4; 5; 6; 7; 8; 9
1.1.2.c) Principles of safety integration 4; 5; 6; 7; 8; 9
1.1.5 Design of machinery to facilitate 4.1; 4.6.4
its handling
1.1.6 Ergonomics 4.1; 4.2; 4.9
1.1.8 Seating 4.9.1.10
1.2.1 Safety and reliability of control 4.2
systems
1.2.2 Control devices 4.2; 4.3; 4.6.1; 4.8; 4.9.2; 4.11
1.2.3 Starting 4.2
1.2.4 Stopping 4.2
1.2.4.3 Emergency stop 4.2
1.2.6 Failure of the power supply 4.5
1.3 Protection against mechanical 4.1; 4.4.2; 4.11; 5.1; 6.2; 7.1; 7.2
hazards
1.3 Protection against mechanical 4.1; 4.4.2; 4.5; 4.11; 5.1; 6.2;
hazards 7.1; 7.2
1.3 Protection against mechanical 4.1; 4.4; 4.8; 4.11; 4.12; 5.1; 5.2;
hazards 6.1; 6.2; 6.3; 7.1; 7.2; 7.3; 7.4;
7.5; 7.6;
1.3 Protection against mechanical 4.1; 4.4.4; 9.2.2
hazards
1.3 Protection against mechanical 9.1
hazards
1.3.1 Risk of loss of stability 4.6.4; 9.1.2
1.3.2 Risk of break-up during 4.5; 4.6
operation
1.3.3 Risks due to falling or ejected 4.4.4; 4.5; 4.6; 9.2
objects
1.3.4 Risks due to surfaces, edges or 4.4; 7.6
angles
1.3.4 Risks due to surfaces, edges or 4.1; 4.9
angles
1.3.7 Risks related to moving parts 4.1; 4.4; 4.5; 4.7; 4.8; 4.9.1;
4.11.2; 4.12; 5.1; 5.2; 6.1; 6.2;
6.3; 7.1; 7.2; 7.5; 7.6
1.3.8 Choice of protection against risks 4.4; 4.8; 4.9.1; 4.11.2; 4.12; 5.1;
arising from moving parts 5.2; 6.1; 6.2; 6.3; 7.1; 7.2; 7.5;
7.6
1.3.9 Risks of uncontrolled movement 4.4; 4.6; 4.11.1
1.4.1 General requirements 4.10
1.5.1 Electricity supply 4.1; 9.1
1.5.4 Errors of fitting 4.1; 9.1
1.5.8 Noise 4.13; 9.1 The determination of noise
emission values is not
covered.
1.5.15 Risk of slipping, tripping or 4.9; 4.10
falling
1.6.1 Machinery maintenance 4.5; 4.6.2; 4.10; 6.3; 9.1
1.6.2 Access to operating positions 4.5; 4.6.2; 4.9.1; 4.10; 6.3; 9.1
and service points
1.6.4 Operator intervention 4.1; 4.2
1.7.1.1 Information and information 4.9.1; 9.1; 9.2
devices
1.7.2 Warning of residual risks 4.4.4; 6.2; 7.1; 9.2.2
1.7.3 Marking of machinery 9.2.1
1.7.4 Instructions 6.2; 7.1; 9.1 1.7.4.2 u): The
determination of noise
emission values is not
covered.
3.2.1 Driving position 4.3
3.2.3 Positions for other persons 4.9
3.3 Control systems 4.1
3.3.1 Control devices 4.2; 9.1
3.3.1 Control devices 4.2; 4.8; 4.11
3.3.2 Starting/moving 4.2; 4.9.2
3.4.2. Moving transmission parts Not covered, excluding
strength for guards and
barriers
3.4.5 Means of access 4.9
3.4.6 Towing devices 4.1; 9.1
3.4.7 Transmission of power between 4.1
self-propelled machinery (or tractor)
and recipient machinery
3.6.2 Marking 9.2.1
3.6.3 Instructions 9.1
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 4254-17
First edition
2022-02
Agricultural machinery — Safety —
Part 17:
Root crop harvesters
Matériel agricole — Sécurité —
Partie 17: Matériel de récolte de racines et tubercules
Reference number
ISO 4254-17:2022(E)
ISO 4254-17:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 4254-17:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Safety requirements and/or protective/risk reduction measures for all machines .4
4.1 General . 4
4.2 Controls . 4
4.3 Visibility . 4
4.4 Haulm/leaf topping device . 5
4.4.1 Protection against unintentional contact with the rotating tools . 5
4.4.2 Haulm/leaf conveying device of a haulm/leaf topping device . 7
4.4.3 Haulm/leaf loading device of a haulm/leaf topping device . 8
4.4.4 Protection against thrown objects . 8
4.5 Bunker . 9
4.6 Unloading . 9
4.7 Prevention of hazards related to blockages . 9
4.8 Prevention of risks of unintentional contact with power-driven functional elements . 9
4.9 Platforms used as workplace on the machine . 10
4.9.1 General . 10
4.9.2 Sorting platform . 10
4.9.3 Packing platform . 11
4.10 Other places than the operator's stations .12
4.11 Leaf spreading device .13
4.11.1 General .13
4.11.2 Protection against unintentional contact .13
4.12 Haulm spreading devices . 17
4.12.1 Protection on the top and at the front . . 17
4.12.2 Protection at the sides . 19
4.13 Noise reduction as safety requirement . 19
5 Additional requirements for sieving harvesters .19
5.1 Digging devices . 19
5.2 Cleaning and conveying devices . 19
5.2.1 General . 19
5.2.2 Cleaning belts . 19
5.2.3 Other cleaning devices . 19
5.2.4 Conveying devices .20
6 Additional requirements for root lifting harvesters .20
6.1 Root lifting devices . 20
6.2 Cleaning devices . 20
6.2.1 General .20
6.2.2 Cleaning turbines . 20
6.2.3 Cleaning belts . 22
6.2.4 Cleaning rollers.23
6.3 Conveying devices . 24
7 Additional requirements for top lifting harvesters .24
7.1 Top lifting devices . 24
7.2 Cleaning devices . 26
7.3 Cleaning belts . 26
7.4 Conveying devices . 26
7.5 Devices in front of the top lifting devices . 26
7.6 Haulm/leaf removing device . 27
iii
ISO 4254-17:2022(E)
8 Verification of the safety requirements and/or protective/risk reduction measures .27
9 Information for use .28
9.1 Operator’s manual .28
9.1.1 General .28
9.1.2 All machines .28
9.1.3 Sieving harvesters.29
9.1.4 Root lifting harvesters .29
9.1.5 Top lifting harvesters .30
9.2 Marking . 30
9.2.1 General .30
9.2.2 Warnings .30
Annex A (informative) List of significant hazards .32
Annex B (informative) Examples of machines and components .39
Annex C (informative) Prevention of hazards related to blockages and removal of blockages
on root crop harvester .51
Bibliography .54
iv
ISO 4254-17:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 7, Equipment for harvesting and conservation, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 4254 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user's national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
ISO 4254-17:2022(E)
Introduction
This document is a type-C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.)
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or
type-B standards, the requirements of this type-C standard take precedence over the requirements of
the other standards for machines that have been designed and built according to the requirements of
this type-C standard.
NOTE Examples of machine and components, illustrating the terms and definitions in Clause 3, are given in
Annex B.
vi
INTERNATIONAL STANDARD ISO 4254-17:2022(E)
Agricultural machinery — Safety —
Part 17:
Root crop harvesters
1 Scope
This document, intended to be used together with ISO 4254-1, specifies the safety requirements
and their verification for the design and construction of the following types of root crop harvesting
machines trailed, mounted or self-propelled:
— sieving harvesters,
— root lifting harvesters,
— top lifting harvesters,
which carry out more than one of the following operations: haulm/leaf topping, digging/taking-in/
lifting, cleaning, conveying and unloading of root crops.
This document is also applicable for haulm/leaf toppers used individually.
This document is not applicable to cleaner-loaders which operate from a heap of beet. For these type of
machines, additional hazards are, at present, not dealt with in this document.
In addition, it specifies the type of information on safe working practices to be provided by the
manufacturer.
The list of significant hazards covered in this document is given in Annex A. It also indicates the hazards
which have not been dealt with.
Environmental aspects have not been considered in this document. Noise has been considered partly in
this document.
This document applies primarily to machines which are manufactured after the date of its publication.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4254-1:2013, Agricultural machinery — Safety — Part 1: General requirements
ISO 4254-1:2013/AMD 1:2021, Agricultural machinery — Safety — Part 1: General requirements
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria
ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Safety signs and hazard pictorials — General principles
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
ISO 4254-17:2022(E)
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 15534-3:2000, Ergonomic design for the safety of machinery — Part 3: Anthropometric data
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4254-1:2013, ISO 4254-1:2013/
AMD 1:2021, ISO 12100:2010 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
sieving harvester
harvesting machine which digs the crops together with a bed of soil and which separates the crops
from the soil by sieving
Note 1 to entry: These machines are typically used for harvesting of potatoes.
3.2
root lifting harvester
harvesting machine which lifts individual crops of a row and which separates remaining adhering soil
from the crops
Note 1 to entry: These machines are typically used for harvesting of beets.
3.3
top lifting harvester
harvesting machine which lifts crops of a row mainly by the leaf or haulm by using a clamping belt and
which separates remaining adhering soil from the crops
Note 1 to entry: These machines are typically used for harvesting of carrots or leeks.
3.4
haulm/leaf conveying device
device for transport of haulms/leaves to haulm/leaf spreader or to the loading device, if any, or to the
outside of the machine
3.5
cleaning device
device mainly intended to separate the crop from the soil adhering to it
3.6
crop conveying device
device which transports the crop from one part of the machine to another
3.7
unloading device
device which transfers the crop out of the machine
3.8
bunker
device to collect the crop on the machine which can be equipped with a system to raise and combined
with an unloading device (3.7)
ISO 4254-17:2022(E)
3.9
haulm/leaf topping device
device to remove and to evacuate the haulm/leaf prior to lifting the crop
Note 1 to entry: This device can be used also individually as haulm/leaf topper.
3.9.1
rotor
rotating device intended to remove the haulm/leaf of crops and/or to clean the top part of the crop still
in the ground
3.9.2
leaf spreading device
device which distributes leaves evenly on the soil surface
3.9.3
haulm spreading device
device which distributes haulms evenly on the soil surface
3.10
haulm de-vining device
device to separate haulm from the potatoes after lifting
3.11
digging device
device of a sieving harvester (3.1) to dig the crop together with soil from the field
3.12
clod and stone removal devices
devices to remove unwanted soil, stones and clods from the lifted crop
3.13
sorting platform
workplace for sorting on the machine
3.14
packing platform
workplace on the machine for manual packing of crops in bags or boxes with an area for transfer of the
bags or boxes to a transport vehicle
3.15
inspection platform
workplace on the machine for observing of the crop flow and the quality of the crop harvested
3.16
haulm/leaf loading device
device which transports haulms/leaves collected at the discharge outlet
3.17
root lifting device
device of a root lifting harvester (3.2) which extracts roots crops from the soil
3.18
haulm/leaf cutting device
device to remove the haulm/leaf by cutting after lifting the crop located just at the begining of the
clamping belt
3.19
haulm/leaf removing device
device to remove the residual haulm/leaf after lifting the crop located in upper area of the clamping
belt
ISO 4254-17:2022(E)
3.20
top lifting device
clamping belt in combination with a share as support for lifting the crop from the soil by lifting the crop
by the haulm/leaf
3.21
torpedo
tapered or cone-shaped device for raising haulm/leaf before lifting
Note 1 to entry: See Figures 15 and B.15.
4 Safety requirements and/or protective/risk reduction measures for all
machines
4.1 General
4.1.1 Machinery shall conform with the safety requirements and/or protective/risk reduction
measures of this clause. In addition, the machine shall be designed in accordance with the principles
of ISO 12100:2010, Clause 4, for hazards relevant, but not significant, which are not dealt with by this
document.
4.1.2 Except where otherwise specified in this document, the machine shall be in accordance with
the requirements of ISO 4254-1:2013, ISO 4254-1:2013/AMD 1:2021 and with ISO 13857:2019, Tables 1,
3, 4 and 6 as appropriate.
4.2 Controls
4.2.1 The starting and the stopping of the moving parts shall be controllable only from the driver's
station of the self-propelled machine and in case of trailed and mounted machines only from the
driver's station of the towing machine. If this is not possible for particular functions or not useful (e.g.
for removing of blockages), the controls for these particular functions may be located on the machine
provided they can be operated from a safe position.
4.2.2 The lowering of the bunker shall be controllable from the driver's station and the control shall
be of hold-to-run-type.
4.2.3 On machines with a sorting platform, emergency stop equipment in accordance with
ISO 13850:2015 shall be accessible from each workplace on the platform to stop hazardous movements,
but at least the conveyor of the sorting platform. The accessibility of the emergency stop equipment shall
be determined according to ISO 15534-3:2000. In case of an emergency stop activation, a clear signal
shall be transmitted to the driver in order alert the driver to stop further movements by switching off
the power transmission.
4.2.4 The controls for the adjustment of moving parts shall be located so that they can be operated
from the driver's station and/or the sorting platform and with the guards in guarding position. The
operator's manual shall include an appropriate notice on the need to adjust the driving speed and/or
the speed of the functional components of the machine to the conditions of work.
4.3 Visibility
4.3.1 Self-propelled machines shall be fitted with an audible warning alarm in accordance with
ISO 9533:2010. This alarm shall be automatically engaged during reversing manoeuvres.
ISO 4254-17:2022(E)
4.3.2 This alarm is not required if the machine is equipped with a closed-circuit television (CCTV)
which permits the driver to have a clear view on the rear of the machine.
4.3.3 In direction of travel lateral visibility to view the outermost edges of the machine shall be
provided. If this is not possible by direct view, mirrors or any other equivalent means shall be provided.
4.4 Haulm/leaf topping device
4.4.1 Protection against unintentional contact with the rotating tools
4.4.1.1 General
Machines shall be designed or guarded in such a way that any unintentional contact with the rotating
tools at the front, at the rear, at the sides and on the top is avoided.
4.4.1.2 Protection on the top, at the front and the rear
4.4.1.2.1 On the top, the protection shall be achieved by an imperforate guard. The front and rear
edge of this imperforate guard shall be located at a maximum height of 400 mm from the lowest point of
the tools path and at a minimum horizontal distance of 200 mm from the tools path [see Figure 1 a)].
4.4.1.2.2 The protection at the front and the rear shall be achieved by the extension of the upper
imperforate guard to the front and to the rear [see Figure 1 a)].
4.4.1.2.3 For rotors with a vertical drive shaft, the protection on the front and back can alternatively
be achieved by covering the bottom edge of the top cover by at least 3 mm downwards (see Figure 2)
and stopping the tools when the rotor is in the highest position.
4.4.1.3 Protection at the sides
4.4.1.3.1 In the accessible zone, the lateral protection shall be:
— an imperforate guard, located near the tools and in such a way that its lower edge extends by a
minimum of 3 mm below the tools path [see Figure 1 b)]; or
— in case the lower edge of the imperforate guard does not extend by a minimum of 3 mm below the
tools path, the lower edge of this imperforate guard shall be located at a maximum height of 400 mm
from the lowest point of the tools path and additionally by a barrier located at a maximum height of
400 mm from the lowest point of the tools path and at a minimum horizontal distance of 200 mm
from the tools path [see Figure 1 c)]. If the height of the barrier is more than 400 mm from the lowest
point of the tools path the barrier shall be located along a contour with angle of 45° to the exterior
whereby the maximum height of the barrier shall not exceed 800 mm. Barriers at the sides can be
foldable for transport. They shall remain attached to the machine and shall be kept fixed in their
position. The operation of the tools shall be avoided when the barrier is not in protective position
(e.g. by restriction of the function of the machine components in this situation); or
— a combination of these two previous protective devices.
4.4.1.3.2 The projection on a horizontal plane of these protective devices shall be continuous.
ISO 4254-17:2022(E)
Dimensions in millimetres
a) Protection at the top, b) Protection at the sides c) Protection at the sides
front and rear by an by an imperforate guard by a barrier
imperforate guard
Key
1 barrier
2 tools path
3 imperforate guard
Figure 1 — Haulm/leaf topping device with horizontal axis — Protective devices
Dimensions in millimetres
a) Protection at the top, b) Protection at the sides c) Protection at the sides
front and rear by by an imperforate guard by a barrier
an imperforate guard
Key
1 barrier
2 tools path
3 imperforate guard on the top
4 imperforate at the side
5 tools
Figure 2 — Haulm/leaf topping device with vertical axis — Protective devices
ISO 4254-17:2022(E)
4.4.2 Haulm/leaf conveying device of a haulm/leaf topping device
4.4.2.1 General
Any mobile elements of the haulm/leaf conveying device located less than 850 mm from the outer
contour of the machine shall be guarded except the discharge outlet. There shall be no crushing and
shearing points at the discharge outlet.
4.4.2.2 Protection of the discharge outlet at the top
On the top, the protection shall be achieved by an imperforate guard which extends beyond the outer
part of the haulm/leaf conveying device by a minimum of 150 mm (see Figure 3). When a conveyor belt
is used, the lower edge of the top guard shall be placed at 200 mm maximum above the upper plane of
the conveyor belt (see Figure 4).
4.4.2.3 Protection of the discharge outlet at the sides
The lateral part of conveying belts itself shall be guarded against unintentional contact. The lateral part
of augers shall be guarded with imperforate guards.
4.4.2.4 Protection of the discharge outlet at the front
The protection at the front shall be achieved by:
— when an auger is used, a fixed guard, the lower end of which shall extend at least 50 mm below the
axis of the screw (see Figure 3);
— when a conveyor belt is used, the guard on the top (see Figure 4); or
— a mobile guard which completely seals the discharge outlet and automatically returns to the closed
position when no more material is ejected (see Figure 5).
Dimensions in millimetres
Key
1 imperforate top guard
2 fixed guard
3 axis of the screw
Figure 3 — Protection of the discharge outlet in case of an auger
ISO 4254-17:2022(E)
Dimensions in millimetres
Key
1 imperforate top guard
2 conveyor belt
Figure 4 — Protection of the discharge outlet in case of a conveyor belt
Dimensions in millimetres
Key
1 mobile guard
Figure 5 — Protection of the discharge outlet by a mobile guard
4.4.3 Haulm/leaf loading device of a haulm/leaf topping device
The haulm/leaf loading device shall meet 4.1.
4.4.4 Protection against thrown objects
Sufficient protection against thrown parts shall be ensured. A warning of residual hazards according to
9.2.2 shall be provided.
ISO 4254-17:2022(E)
4.5 Bunker
4.5.1 Within accessible zones, between moving parts of the bunker and the bunker and other parts
of the machine, there shall be no shearing or pinching points. This does not apply for supporting points
for stabilization of the bunker located within the machine at a minimum distance of 550 mm from the
outer contour of the machine and which are not accessible from workplaces on the machine.
4.5.2 Supports in accordance with ISO 4254-1:2013, 4.11 shall be provided in order to enable
maintenance and service operations to be carried out by the operator under the bunker in raised
position.
4.5.3 The distribution auger shall be guarded to prevent any contact from the driver's station, from
the ground or from any platform.
4.6 Unloading
4.6.1 The machine shall be so designed that the operator can supervise the unloading process from
the driver's station.
4.6.2 Supports in accordance with ISO 4254-1:2013, 4.11 shall be provided in order to enable
maintenance and service operations to be carried out by the operator under unloading devices in raised
position. It shall be possible for the operator to fit and to remove the mechanical supports from outside
the hazard zone.
4.6.3 The unloading devices shall be supplied with a device to lock them in the transport position
according to
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