SIST EN 703:2004

SLOVENSKI STANDARD
SIST EN 703:2004
01-september-2004
1DGRPHãþD
SIST EN 703:1996
Kmetijski stroji - Stroji za nalaganje, mešanje oziroma rezanje ter raztros silaže -
Varnost
Agricultural machinery - Silage loading, mixing and/or chopping and distributing
machines - Safety
Landmaschinen - Maschinen zum Laden, Mischen und/oder Zerkleinern und Verteilen
von Silage - Sicherheit
Matériel agricole - Désileuses chargeuses, mélangeuses et/ou hacheuses et
distributrices - Sécurité
Ta slovenski standard je istoveten z: EN 703:2004
ICS:
65.040.20 3RVORSMDLQQDSUDYH]D Buildings and installations for
SUHGHODYRLQVNODGLãþHQMH processing and storage of
NPHWLMVNLKSULGHONRY agricultural produce
SIST EN 703:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 703:2004

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SIST EN 703:2004
EUROPEAN STANDARD
EN 703
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2004
ICS 65.060.99 Supersedes EN 703:1995
English version
Agricultural machinery - Silage loading, mixing and/or chopping
and distributing machines - Safety
Matériel agricole - Désileuses chargeuses, mélangeuses Landmaschinen - Maschinen zum Laden, Mischen
et/ou hacheuses et distributrices - Sécurité und/oder Zerkleinern und Verteilen von Silage - Sicherheit
This European Standard was approved by CEN on 2 February 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 703:2004: E
worldwide for CEN national Members.

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SIST EN 703:2004
EN 703:2004 (E)
Contents           page
Foreword.3
0 Introduction.4
1 Scope.5
2 Normative references.6
3 Terms and definitions .6
4 List of significant hazards .8
5 Safety requirements and/or protective measures.10
5.1 General.10
5.2 Location of the manual controls .10
5.3 Visibility.10
5.4 Loading device.12
5.4.1 Controls for cutting and loading tools .12
5.4.2 Loading door.13
5.5 Safeguarding of the cutting and loading tools when not in use.13
5.6 Mixing and/or chopping device.14
5.6.1 Protection against contact with moving parts.14
5.6.2 Checking of the mixing .14
5.6.3 Reducing accumulation of material on the top of the machine.14
5.6.4 Manual addition of feedstuffs.15
5.7 Distribution device.15
5.7.1 General.15
5.7.2 Case where a conveyor is used .15
5.7.3 Case where an auger is used .17
5.7.4 Case where a distributor cylinder is used .18
5.7.5 Case of free discharge .18
5.7.6 Case of turbines.19
5.8 Location of the weighing device display.20
5.9 Noise.21
5.9.1 Noise reduction as a safety requirement .21
5.9.2 Verification of requirements on noise based on noise emission values.21
6 Verification of safety requirements and/or protective measures .21
6.1 Visibility.21
6.2 Measurement of the tools stopping time.21
7 Information for use .22
7.1 Instruction handbook.22
7.2 Marking.23
Annex A (informative) Example of machines and components .24
Annex ZA (informative) Relationship of this document with EC Directives.32
Bibliography .33

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SIST EN 703:2004
EN 703:2004 (E)
Foreword
This document (EN 703:2004) 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 November 2004, and conflicting national standards shall be withdrawn at the latest
by November 2004.
This document supersedes EN 703:1995.
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 EC Directive(s).
For relationship with EC Directives, see informative annex ZA, which is an integral part of this document.
Annex A is informative and gives examples of machines and components.
This document includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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SIST EN 703:2004
EN 703:2004 (E)
0 Introduction
This document is a type C standard as stated in EN 1070.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this document. These hazards are specific to machines for loading (including silage
cutting), mixing and/or chopping and distributing silage.
Significant hazards that are common to all the agricultural machines (self-propelled, mounted, semi-mounted and
trailed) are dealt with in EN 1553.
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 standard.
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SIST EN 703:2004
EN 703:2004 (E)
1 Scope
This document, used together with EN 1553, 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, 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 manufacturer.
This document applies only to machines that have the following functional combinations:
 mixing and distributing functions; or
 mixing, chopping and distributing functions; or
 loading, mixing and distributing functions; or
 loading, mixing, chopping and distributing functions; or
 chopping and distributing functions; or
 loading, chopping and distributing functions.
Silage block cutters, even if they carry out a single function, are covered by this document.
It does not apply:
 to machines which pick up green fodder directly from the field;
 to loading cranes;
 to silage buckets.
NOTE 1 Loading cranes are dealt with in EN 12999.
NOTE 2 Silage buckets will be dealt through an amendment or during next revision.
This document deals with all 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 hazards arising from:
 failure of the control circuit;
 inadequate seating;
 inadequate lighting;
 impossibility of stopping the machine in the best possible conditions;
 travelling of machinery;
 break-up of parts rotating at high speed.
It is not applicable to environmental hazards (except noise).
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 by CEN.
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SIST EN 703:2004
EN 703:2004 (E)
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 ISO 12100-1:2003, Safety of machinery – Basic concepts, general principles for design – Part 1: Basic
terminology, methodology (ISO 12100-1:2003).
EN ISO 12100-2:2003, Safety of machinery – Basic concepts, general principles for design – Part 2: Technical
principles (ISO 12100-2:2003).
EN 294:1992, Safety of machinery – Safety distance to prevent danger zones being reached by the upper limbs.
EN 1070, Safety of machinery – Terminology.
EN 1553:1999, Agricultural machinery – Agricultural self-propelled, mounted, semi-mounted and trailed machines –
Common safety requirements.
EN ISO 5353, Earth-moving machinery, and tractors and machinery for agriculture and forestry – Seat index point
(ISO 5353:1995).
EN ISO 11688-1, Acoustics – Recommended practice for the design of low-noise machinery and equipment –
Part 1: Planning (ISO/TR 11688-1:1995).
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 1070 and the following apply.
NOTE Examples of machines and components, illustrating the following definitions are given in annex A.
3.1 machines
3.1.1
silage block cutter
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 machine can be equipped with a distribution
device)
3.1.2
silage bucket
bucket intended to be fitted as an attachment on a front loader or a self-propelled variable reach truck and which
carries out at least loading and distributing functions
3.2 functions
3.2.1
mixing
operation for blending two or more different materials without reducing the size of their components
3.2.2
chopping
operation to reduce the size of the constituent elements of a material or to break up an agglomerated or an
entangled material
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SIST EN 703:2004
EN 703:2004 (E)
3.3 loading device
3.3.1
cutting and loading tools
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
3.3.2
loading crane
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 the machine by means of
a grab, a hook or any other device
NOTE Adapted from EN 12999:2002, definition 3.1.1.
3.3.3
loading door
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 and/or chopping
compartment
3.4
mixing and/or chopping device
set of elements such as one or more rotating auger(s), rotating paddle auger, conveyor, separator, turbine
3.5
distribution device
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 belts, etc.)
3.6
work station
position of the operator, standing on the ground or on a platform or sitting, to actuate controls or carry out any other
task
3.7
driver's station
position of the operator from where the driving of the machine is controlled
3.8
flap
hinged guard which is closed when the machine is operating and which can be opened for service and
maintenance operations
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SIST EN 703:2004
EN 703:2004 (E)
4 List of significant hazards
For the purposes of this document Table 1 gives, for defined danger zones, the significant hazards, the hazardous
situations, the significant hazardous events, 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 to reduce the risk.
Table 1 — List of significant hazards associated with machines for loading, mixing and/or chopping and
distributing silage and/or other feedstuffs
N° Hazard Location or event Clause/sub-clause Clause/sub-clause
of EN 1553:1999 of this document
1.1 Crushing hazard Contact with unguarded working 4.1.7.1, 4.2.2.2, 5.2, 5.4.1, 5.4.2
tools, unexpected opening of the 4.2.6.1, 4.3.2.3,
loading door 4.3.4.1
1.2 Shearing hazard Contact with unguarded working 4.1.7.3, 4.2.2.2 5.2, 5.4.2, 5.6.1, 5.7
tools, unexpected opening of the
loading door
1.3 Cutting or severing hazard Contact with unguarded working 4.1.1, 4.1.7.1, 4.2.6.1, 5.2, 5.4.1, 5.5, 5.6.1,
tools 4.3.2.3, 4.3.4.1 5.7.1
1.4 Entanglement hazard Contact with unguarded working 4.1.1, 4.1.7.1, 4.2.6.1, 5.1, 5.2, 5.4.1, 5.5,
tools checking of the mixing, 4.3.2.3, 4.3.4.1 5.6.1, 5.6.2, 5.7.1,
contact with the PTO drive shaft 5.7.2, 5.8
1.5 Drawing-in or trapping hazard Contact with unguarded working - 5.2, 5.4.1, 5.6.1, 5.6.2,
tools, contact with the PTO drive 5.7, 5.8
shaft, checking of the mixing
1.6 Impact hazard Contact with unguarded working 4.1.1, 4.1.7.1, 4.1.7.3, 5.2, 5.4.1, 5.4.2
tools, unexpected opening of the 4.2.6.1, 4.3.2.3,
loading door, lifting of the 4.3.4.1
drawbar
1.7 Stabbing or puncture hazard Contact of fingers with unguarded - 5.7.1
working tools, unexpected
opening of the loading door
1.9 High pressure fluid injection or ejection Hazardous location of 4.1.8.2 7.1.o), 7.2
hazard pressurised hoses
2.2 Contact of persons with parts which Contact of the loading device with - 7.1.f), 7.2
have become live under faulty overhead power lines
conditions (indirect contact)
2.3 Approach to live parts under high Contact of the loading device with 5.1 7.1.f), 7.2
voltage overhead power lines
2.5 Thermal radiation or other phenomena Hazardous location of cables 4.1.8.1, 4.2.5.1 -
such as the projection of molten
particles and chemical effects from
short circuits, overloads, etc.
4.1 Hearing loss (deafness), other Hearing damage due to the 4.1.2, annex D 5.9, 7.1
physiological disorders (e.g. loss of working machine
balance, loss of awareness)
5.2 Whole body vibration, particularly when Seat insufficiently dampened 4.1.3 -
combines with poor postures
(continued)
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SIST EN 703:2004
EN 703:2004 (E)
Table 1 — List of significant hazards associated with machines for loading, mixing and/or chopping and
distributing silage and/or other feedstuffs (concluded)
N° Hazard Location or event Clause/sub-clause Clause/sub-clause
of EN 1553:1999 of this document
7.1 Hazards from contact with or inhalation Leakage from the fuel tank or 4.2.5.2, 4.2.6.2, -
of harmful fluids, gases, mists, fumes, from the engine 4.3.4.2, 5.1
and dusts
7.2 Fire or explosion hazard Leakage from the engine 4.2.6.2, 4.3.4.2, 5.1 -
7.3 Biological or microbiological (viral or Leakage from the fuel tank 4.2.5.2 -
bacterial) hazards
8.1 Unhealthy postures or excessive Unergonomic design of 4.1.4, 4.1.5.1, 4.1.6, -
efforts operator's station 4.2.6.1, 4.3.4.1
8.2 Inadequate consideration of hand-arm Inability to check of the mixing 4.1.5.1, 4.1.5.2, 4.1.6, 5.6, 5.7
or foot-leg anatomy 4.2.2.2, 4.2.2.3.1,
4.2.3
8.6 Human error, human behaviour Misunderstanding of the meaning 4.2.1, 4.3.1, 5.1 7.1.c), g), h), i), p), 7.2
of controls
8.7 Inadequate design, location or Manual controls located in an 4.2.1, 4.2.3, 4.3.1 7.1.c), g), h), i), p), 7.2
identification of manual controls unusual way
10.2 Restoration of energy supply after an Activation of the cutting and 4.3.1 -
interruption loading tools while the operator is
standing around
13 Failure of power supply Unexpected opening of the - 5.4.2, 5.5
loading door, inadvertent
lowering of the cutting and
loading tools
15 Errors of fitting Confusion in the connection of 4.3.3, 5.1 7.1.k), 7.2
hoses or electrical cables
17 Falling or ejected objects or fluids Rupture of pressurised hoses 4.1.8.2 7.1, 7.2
18 Loss of stability/overturning of Incorrect location of attachments 4.2.4.1, 4.3.2.1 7.1.m)
machinery for towing, tie-down points or
application points for jacks
19 Slip, trip and fall of persons (relating to Inability to check of the mixing, 4.1.5.1, 4.1.5.2, 5.6.2, 5.6.3, 7.1
machinery) accumulation of material on the 4.1.5.3, 4.1.6, 4.2.5.2,
top of the machine 4.2.6.2, 4.3.4.2
20.1 Movement when starting the engine Unexpected opening of the 4.2.2.5 5.4.2, 7.1.m)
loading door
21.5 Insufficient visibility from the work Incorrect location of the manual - 5.2, 5.3, 6.1, 7.1.b), t)
positions controls, obstruction around the
working area
21.10 Insufficient means for Checking of the mixing 4.2.2.3.1 5.6.2
evacuation/emergency exit
22.1 Inadequate location of manual controls Manual controls located in an 4.3.1 7.1.c), g), h), i), p), 7.2
unusual way
22.2 Inadequate design of manual controls Manual controls located in an 4.2.1, 4.3.1 7.1.c), g), h), i), p), 7.2
and their mode of operation unusual way
24.3 Hazards from coupling and towing Incorrect location of attachments 4.2.4.1.1, 4.3.2.2 7.1.s), 7.2
for towing
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SIST EN 703:2004
EN 703:2004 (E)
5 Safety requirements and/or protective measures
5.1 General
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 scalds).
5.2 Location of the manual controls
It shall not be possible for the operator, when inside the mixing and/or chopping compartment(s), to reach the
manual controls.
The control system shall be such that it is not possible for the operator to reach the 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 is more than 850 mm.
The location of the manual control(s) of cutting and loading tools or loading door shall be such that when the
operator actuates these from the work station or the driver’s station, there is adequate direct visibility on the work
area of cutting and loading tools or the loading door as characterised in 5.3.
When the machine is travelling, it shall be possible to actuate controls for mixing and/or chopping and distribution
only from the driver’s station.
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.
These requirements shall be verified by measurement and inspection.
5.3 Visibility
The visibility is considered to be adequate when the operator, from his driver’s or work station, can see the work
area of the cutting and loading tools over their whole width. This work area extends from their highest position to a
minimum height of 1,5 m from the ground when the machine is in its loading position and:
 for self-propelled machines, at 200 mm measured from the edge of the cutting and loading tools (see
Figure 1);
 for trailed machines, at 200 mm measured from the outer edge of the machine (see Figure 2).
The position of the operator’s eye is determined as shown in Figures 1 and 3. This requirement shall be checked
according to 6.1.
When adequate direct visibility is not achieved, machines with cutting and loading tools or a loading door shall be
fitted with devices such as mirrors or closed circuit television (CCTV) which ensure indirect visibility. Additionally, a
sound and/or light signal shall be emitted at actuation of the cutting and loading tools. This requirement shall be
verified by functional test.
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SIST EN 703:2004
EN 703:2004 (E)
Dimensions in millimetres

Key
1 Eye position
2 Cutting and loading tools
Figure 1 — Checking of the direct visibility for self-propelled machines
Dimensions in millimetres

Figure 2 — Checking of the direct visibility for trailed machines
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SIST EN 703:2004
EN 703:2004 (E)
Dimensions in millimetres

Key
1 Eye position
2 Clevis or hook
3 Lower hitch point
4 Ground
NOTE The hitch point is either 2 or 3
Figure 3 — Determination of the eye position from the driver’s station on the tractor
5.4 Loading device
5.4.1 Controls for cutting and loading tools
The controls for the activation and the lowering of the cutting and loading tools shall be of the hold-to-run type.
In addition, the controls of powered cutting and loading tools (rotary and oscillating cutter or knives) shall be
designed or guarded so that the tools cannot move without intentional action (e.g. a manual control requiring two
different actions to be operational). These requirements shall be verified by functional test.
The requirements of both paragraphs above do not apply to the control for the adjustment of the lowering speed of
the powered loading and cutting tools.
The stopping time of powered cutting and loading tools shall be 5 s max. for self-propelled machines and 10 s max.
for other machines.
This requirement shall be checked according to 6.2.
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SIST EN 703:2004
EN 703:2004 (E)
5.4.2 Loading door
The control for the activation of the loading door shall be of the hold-to-run type.
To ensure the protection of the operator against crushing and shearing hazards related to a failure of the control
circuit, the machine shall be fitted with a device which limits the maximum downward speed of the door to 40 mm/s
measured at the outermost point of the door.
In order to avoid unexpected opening of the loading door when travelling, mechanical or hydraulic locking devices
complying with 4.1.7.3 of EN 1553:1999 shall be provided.
For semi-mounted and trailed machines with a loading door articulated in its lower part, the vertical downwards
load at the hitch point shall be positive, measured stationary on a horizontal firm surface with the loading door (see
Figure A.9) in its most unfavourable condition for travelling and distribution, as specified by the manufacturer.
These requirements shall be verified by measurement and functional test.
5.5 Safeguarding of the cutting and loading tools when not in use
All the tools (e.g. blades, cutting components, sharp edges, etc.) which can be hazardous when not in use shall be
guarded in the travelling and distribution positions.
This guarding shall completely cover the tool path at the sides and the cutting and loading tools at the working
front.
In the case of rotating tools, the front guard shall be self-closing and shall extend on the working front at least 110°
from the vertical to the cutting and loading tools axis (see Figure 4), with the machine in travelling position. When
the cutting and loading tools are mounted at the front of the machine, the guard, if not self-closing type, shall be
activated from the driver’s station.

Key
1 Front guard
Figure 4 — Protection of rotating tools when not in use
The protection against inadvertent lowering of the cutting and loading tools during repair and maintenance shall be
provided eith
...