kSIST FprEN 703:2020

SLOVENSKI STANDARD
oSIST prEN 703:2018
01-oktober-2018

Kmetijski stroji - Varnost - Stroji za nalaganje, mešanje in/ali rezanje ter raztros

Agricultural machinery - Safety - Silage loading, mixing and/or chopping and distributing

Landmaschinen - Sicherheit - Maschinen zum Laden, Mischen und/oder Zerkleinern und

Matériel agricole - Sécurité - Désileuses chargeuses, mélangeuses et/ou hacheuses et

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Matériel agricole - Sécurité - Désileuses chargeuses, Landmaschinen - Sicherheit - Maschinen zum Laden,

mélangeuses et/ou hacheuses et distributrices Mischen und/oder Zerkleinern und Verteilen von

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 703:2018 E

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 7

3.1 machines ............................................................................................................................................................ 7

3.2 functions ............................................................................................................................................................. 8

3.3 loading device ................................................................................................................................................... 8

4 List of significant hazards ............................................................................................................................ 9

5 Safety requirements and/or protective measures .......................................................................... 12

5.1 General ............................................................................................................................................................. 12

5.2 Location of the manual controls ............................................................................................................. 12

5.2.1 General ............................................................................................................................................................. 12

5.2.2 Requirements for hold-to-run controls ............................................................................................... 12

5.2.3 Additional requirements for manual controls .................................................................................. 12

5.3 Visibility........................................................................................................................................................... 13

5.3.1 for work area of the cutting, loading tools and loading door ....................................................... 13

5.4 Loading device ............................................................................................................................................... 14

5.4.1 Controls for cutting and loading tools .................................................................................................. 14

5.4.2 Loading door .................................................................................................................................................. 15

5.5 Safeguarding of the cutting and loading tools when not in use ................................................... 15

5.5.1 General ............................................................................................................................................................. 15

5.5.2 Maintenance of cutting tools .................................................................................................................... 16

5.5.3 Blockages ........................................................................................................................................................ 16

5.5.4 Protection against inadvertent re-engagement in case of mechanical elements

stopped by blockage .................................................................................................................................... 17

5.6 Mixing and/or chopping device .............................................................................................................. 17

5.6.1 Protection against contact with moving parts ................................................................................... 17

5.6.2 Checking of the mixing ............................................................................................................................... 18

5.6.3 Top edges of the chamber of the machine ........................................................................................... 18

5.6.4 Manual addition of feedstuffs .................................................................................................................. 18

5.6.5 Maintenance of mixing and/or chopping tools ................................................................................. 19

5.7 Distribution device ...................................................................................................................................... 19

5.7.1 General ............................................................................................................................................................. 19

5.7.2 Case where a conveyor is used ................................................................................................................ 19

5.7.3 Case where an auger is used .................................................................................................................... 23

5.7.4 Case where a distributor cylinder is used ........................................................................................... 23

5.7.5 Case of free discharge ................................................................................................................................. 25

5.7.6 Case of turbines............................................................................................................................................. 26

5.8 Weighing device display ............................................................................................................................ 28

5.9 Noise ................................................................................................................................................................. 29

5.9.1 Noise reduction as a safety requirement ............................................................................................. 29

5.9.2 Verification of requirements on noise.................................................................................................. 29

5.10 Jacking points ................................................................................................................................................ 30

5.11 Brakes............................................................................................................................................................... 30

5.12 Stability and immobilisation .................................................................................................................... 30

5.12.1 Stability and immobilisation of the detached machine .................................................................. 30

5.12.2 Minimum load on the drawbar hitch ..................................................................................................... 31

5.13 Remote control .............................................................................................................................................. 31

5.14 Electro-magnetic compatibility (EMC) .................................................................................................. 31

6 Verification of the safety requirements and/or protective measures ...................................... 31

6.1 Measurement of the tools' stopping time ............................................................................................ 31

7 Information for use ...................................................................................................................................... 31

7.1 Instruction handbook ................................................................................................................................. 31

7.2 Marking ............................................................................................................................................................ 34

7.3 Safety signs ...................................................................................................................................................... 35

Annex A (informative) Examples of machines and components ................................................................ 37

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2006/42/EC aimed to be covered ...................................................... 45

Bibliography ................................................................................................................................................................. 47

This document (prEN 703:2018) 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 document 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 Annex ZA, which is an integral part of this

EN 703:2004+A1:2009 has been technically revised. The main following changes were introduced:

— improvement of the safety requirements in particular regarding controls, visibility, protection

against cutting tools, blockages, loading door, inspection of mixing, access (addition of feedstuffs),

— addition of new clauses on: jacking points, brakes, stability and immobilisation, remote control,

The machinery concerned and the extent to which hazards, hazardous situations and hazardous events

are covered are indicated in the scope of this document. These hazards are specific to silage loading,

Significant hazards that are common to all the agricultural machines (self-propelled, mounted, semi-

When provisions of this type C standard are different from those which are stated in type A or B

standards, the provisions of this type C standard take precedence over the provisions of the other

standards, for machines that have been designed and built according to the provisions of this type C

This document is of relevance, in particular, for the following stakeholder groups representing the

— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).

Others can be affected by the level of machinery safety achieved with the means of the document by the

— machine users/employees (e.g. trade unions, organizations for people with special needs);

The above-mentioned stakeholder groups have been given the possibility to participate at the drafting

This document, used together with EN ISO 4254-1, specifies the safety requirements and their

verification for the design and construction of mounted, semi-mounted, trailed or self-propelled

machines that have a combination of two or more of the following functions: loading, mixing, chopping

and distributing silage and/or other feedstuffs or materials used for animal bedding such as straw, to be

used by one operator only. It includes those fitted with a built-in loading crane. In addition, it specifies

the type of information on safe working practices (including residual risks) to be provided by the

This document applies only to machines that have the following functional combinations:

Silage block cutters, even if they carry out a single function, are covered by this document.

NOTE 2 Autonomous silage loading, mixing and/or chopping and distributing machines (robotic feed systems)

This document deals with the significant hazards, hazardous situations and events relevant to machines

for loading, mixing and/or chopping and distributing silage and/or other feedstuffs, when they are used

as intended and under the conditions foreseen by the manufacturer as listed in Clause 4, except for the

— cutting hazard during service on sharp parts (e.g. blades of the mixing and/or chopping device).

This document is not applicable to machines for loading, mixing and/or chopping and distributing

silage and/or other feedstuffs which are manufactured before the date of publication of this document

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.

EN ISO 4254-1:2015, Agricultural machinery — Safety — Part 1: General requirements (ISO 4254-

EN ISO 12100:2010, Safety of machinery — General principles for design - Risk assessment and risk

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by

EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and

ISO 15817:2012, Earth-moving machinery — Safety requirements for remote operator control systems

For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Note 1 to entry: Examples of machines and components, illustrating the following definitions are given in

machine mounted on the rear 3-point linkage of a tractor that consists of a main guiding frame,

equipped with a set of horizontal tines, carrying the cutting frame equipped with one or more cutting

knives, intended to cut out a silage block, to take it from the silo and to discharge or distribute it (this

bucket intended to be fitted as an attachment on a front loader or a self-propelled variable reach truck

operation for blending two or more different materials without reducing the size of their components

operation to reduce the size of the constituent elements of a material or to break up an agglomerated or

set of elements, consisting of the loading arm and of tools for taking the materials such as rotary cutters,

knives, blades, teeth, etc., needed for picking-up (i.e. cutting) the material and for loading the machine

powered crane comprising a column, which slews about a base, and a boom system which is attached

onto the top of the column. The crane is fitted on the machine and is designed for loading product into

mobile part fitted generally at the rear of the machine, which is used for handling and/or for containing

the material and/or loading the products inside the machine. It is used as a door for closing the mixing

set of elements such as one or more rotating auger(s), rotating paddle auger, conveyor, separator,

set of elements (such as conveyor belt, auger, distributor cylinder, turbine) operated to unload the

materials from the machine and to deposit them where required (on the ground, in troughs, on feeding

position of the operator, standing on the ground or on a platform or sitting, to actuate controls or carry

hinged guard which is closed when the machine is operating and which can be opened for service and

Table 1 gives the significant hazard(s), the significant hazardous situation(s) and hazardous event(s)

covered by this document that have been identified by risk assessment as being significant for this type

of machine, and which require specific action by the designer or manufacturer to eliminate or reduce

Attention is drawn to the necessity to verify that the safety requirements specified in this document

apply to each significant hazard presented by a given machine and to validate that the risk assessment

Table 1 — List of significant hazards associated with machines for loading, mixing and/or

1.3 Cutting or severing hazard Contact with unguarded 4.1.1, 4.1.2, 4.9.1, 5.2, 5.4.1, 5.5, 5.6.1,

1.4 Entanglement hazard Contact with unguarded 4.1.1, 4.1.2, 4.9.1, 5.1, 5.2, 5.4.1, 5.5,

8.2 Inadequate consideration of Inability to check of the 4.7.1, 4.8.3, 5.1.4, 5.6, 5.7

8.6 Human error, human Misunderstanding of the 4.5, 5.1.3, 8.1, 8.2 7.1.c), g), h), i), p),

8.7 Inadequate design, location Manual controls located 4.5, 5.1.3, 8.1, 8.2 7.1 c), g), h), i), p),

19 Slip, trip and fall of persons Inability to check of the 4.7.1, 4.7.2, 4.8.3, 5.6.2, 5.6.3, 7.1

21.5 Insufficient visibility from Incorrect location of the - 5.2, 5.3, 6.1, 7.1 b), t)

22.1 Inadequate location of Manual controls located 4.5, 5.1.3 7.1 c), g), h), i), p),

22.2 Inadequate design of manual Manual controls located 4.5, 5.1.3 7.1 c), g), h), i), p),

Machinery shall comply with the safety requirements and/or protective measures of this clause. In

addition, the machine shall be designed according to the principles of relevant parts of EN ISO 12100

for hazards relevant but not significant, which are not dealt with by this document (e.g. burns and

Unless otherwise specified in this standard, the machines shall comply with the requirements of

EN ISO 4254-1:2015 and with EN ISO 13857:2008, Table 1, Table 3, Table 4 and Table 6 as appropriate.

It shall not be possible for the operator, when inside the mixing and/or chopping compartment(s), to

The control system shall be such that it is not possible for the operator to reach unguarded mobile

working tools while actuating the control. This requirement is considered met for mounted machines

when the distance between the manual controls and any unguarded mobile working tools in operation

For mounted, semi-mounted or trailed machines, when controls require actuation from the driver's

station, these controls shall be designed so that the operator can reach them, for example by means of

an adjustable position of the controls or controls that can be situated inside the tractor.

Where there is more than one control position, the control system shall be designed in such a way that

the use of one of them precludes the use of the others, except for stop controls and