oSIST prEN 17969:2023
(Main)Earth-moving machinery - Safety - Contamination protective systems
Earth-moving machinery - Safety - Contamination protective systems
This document describes requirements, test procedures and information to be provided by the manufacturer for protective ventilation systems to provide breathing air to operator's stations on earth-moving machinery used in contaminated areas.
This document gives additional requirements to the common safety requirements of EN 474-1 Earth-moving machinery – Safety – part 1: General requirements and to the machine specific parts of the EN 474 series and shall be used in conjunction with these as applicable.
This document does not repeat the requirements from the EN 474-series but adds or replaces the requirements as applicable for Earth-moving machinery.
Erdbaumaschinen - Sicherheit - Schutzbelüftungsanlagen
Dieses Dokument gilt für Schutzbelüftungssysteme zur Bereitstellung von Atemluft für Bedienstationen von Erdbaumaschinen, die in kontaminierten Bereichen eingesetzt werden. Ihr Zweck ist, die Exposition des Bedieners (Fahrers) gegenüber gefährlichen Stoffen beim Einsatz von Erdbaumaschinen in kontaminierten Bereichen zu begrenzen. Dieses Dokument beschreibt Anforderungen, Prüfverfahren und vom Hersteller bereitzustellende Informationen für Schutzbelüftungssysteme zur Atemluftversorgung von Bedienstationen auf Erdbaumaschinen, die in kontaminierten Bereichen zum Einsatz kommen.
Dieses Dokument enthält zusätzliche Anforderungen an die allgemeinen Sicherheitsanforderungen der EN 474 1 „Erdbaumaschinen – Sicherheit – Teil 1: Allgemeine Anforderungen“ und an maschinenspezifische Teile der Normenreihe EN 474.
Dieses Dokument wiederholt nicht die Anforderungen der Normenreihe EN 474, sondern ergänzt oder ersetzt die Anforderungen, die für Erdbaumaschinen gelten.
Dieses Dokument gilt nicht für:
— die Sicherheitsanforderungen, die für eine bestimmte Anwendung zu erfüllen sind;
— die relevante Filterleistung oder Filterklasse für konkrete Anwendungen;
— die tatsächliche Leistung der Kabine bei der Praxisanwendung;
— die Filtrationsleistung bei der Praxisanwendung;
— die Haltbarkeit von Filtern bei der Praxisanwendung.
Dieses Dokument gilt nicht für Schutzbelüftungssysteme, die vor dem Datum seiner Veröffentlichung als EN hergestellt wurden.
Engins de terrassement - Sécurité - Systèmes de protection contre les contaminations
Le présent document est applicable aux systèmes de ventilation de protection destinés à fournir de l'air respirable aux postes de l'opérateur des engins de terrassement utilisés dans des zones contaminées. Son objectif est de limiter l'exposition de l'opérateur (conducteur) aux agents dangereux lors de l'utilisation d'engins de terrassement dans des zones contaminées. Le présent document décrit les prescriptions, les modes opératoires d'essai et les informations à fournir par le fabricant pour les systèmes de ventilation de protection destinés à fournir de l'air respirable aux postes de l’opérateur des engins de terrassement utilisés dans des zones contaminées.
Le présent document fournit des prescriptions supplémentaires aux prescriptions communes de sécurité de l'EN 474-1 "Engins de terrassement — Sécurité — Partie 1 : Prescriptions générales" et aux parties spécifiques des machines de la série EN 474.
Le présent document ne répète pas les prescriptions de la série EN 474 mais ajoute ou remplace les prescriptions applicables aux engins de terrassement.
Le présent document ne couvre pas:
— la prescription de sécurité à utiliser pour toute application spécifique ;
— la performance du filtre ou la classe de filtre pertinente pour toute application particulière ;
— des performances réelles de la cabine dans le cas d'application au champ ;
— des performances de filtration dans le cas d'application au champ ;
— la durabilité des filtres.
Le présent document ne s'applique pas aux systèmes de ventilation de protection fabriqués avant sa date de publication.
Stroji za zemeljska dela - Varnost - Sistemi za zaščito pred onesnaženjem
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 17969:2023
01-julij-2023
Stroji za zemeljska dela - Varnost - Sistemi za zaščito pred onesnaženjem
Earth-moving machinery - Safety - Contamination protective systems
Erdbaumaschinen - Sicherheit - Schutzbelüftungsanlagen
Engins de terrassement - Sécurité - Systèmes de protection contre les contaminations
Ta slovenski standard je istoveten z: prEN 17969
ICS:
53.100 Stroji za zemeljska dela Earth-moving machinery
oSIST prEN 17969:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17969:2023
DRAFT
EUROPEAN STANDARD
prEN 17969
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS 53.100
English Version
Earth-moving machinery - Safety - Contamination
protective systems
Engins de terrassement - Sécurité - Systèmes de Erdbaumaschinen - Sicherheit -
protection contre la contamination Schutzbelüftungsanlagen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 151.
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
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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17969:2023 E
worldwide for CEN national Members.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Safety requirements and/or protective/risk reduction measures . 8
4.1 General. 8
4.2 General requirements . 9
4.3 Special provisions for machinery with dust filter units or gas filter units . 13
4.4 Special provisions for machinery with breathing compressors air used as protective
ventilation systems . 16
5 Verification of the safety requirements and/or protective/risk reduction measures
. 16
6 Information for use . 19
6.1 Operator’s manual . 19
6.2 Marking . 20
Annex A (informative) List of significant hazards . 22
Annex B (normative) Determination of the nominal airflow of the protective ventilation unit
. 24
Annex C (normative) Determination of the protection capacity of the gas filters . 25
C.1 General. 25
C.2 Test procedure . 25
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 32
Bibliography . 35
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European foreword
This document (prEN 17969:2023) has been prepared by Technical Committee CEN/TC 151
“Construction equipment and building material machines - Safety”, the secretariat of which is held by
DIN.
This document is currently submitted to the CEN Enquiry.
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 relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
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Introduction
This document is a type C standard as stated in EN ISO 12100.
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 organizations, 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 in the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this document. 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.
When operating earth-moving machinery used in contaminated areas, the operator can be exposed to
hazardous agents such as chemical agents in the form of dust, aerosols, gases or vapours or biological
agents in the form of aerosols. Protective ventilation systems of earth-moving machinery providing
protection against these hazardous agents can reduce operator exposure to airborne contaminants
present in contaminated areas.
The objective of this document is to improve the operator protection by using the protective ventilation
systems of earth-moving machinery used in contaminated areas. For this purpose, this document
specifies requirements, test procedures and the operator information to be provided, in particular with
regard to installation, use and maintenance operations.
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1 Scope
This document is applicable to protective ventilation systems to provide breathing air to operator's
stations on earth-moving machinery used in contaminated areas. Its purpose is to limit the exposure of
the operator (driver) to hazardous agents when earth-moving machinery is used in contaminated areas.
This document describes requirements, test procedures and information to be provided by the
manufacturer for protective ventilation systems to provide breathing air to operator's stations on earth-
moving machinery used in contaminated areas.
This document gives additional requirements to the common safety requirements of EN 474-1 “Earth-
moving machinery – Safety – Part 1: General requirements” and to the machine specific parts of the
EN 474 series.
This document does not repeat the requirements from the EN 474 series but adds or replaces the
requirements as applicable for Earth-moving machinery.
This document does not cover:
— the safety requirement to be used for any specific application;
— the relevant filter performance or filter class for any particular application;
— the actual cab performance in the field application;
— the filtration performance in the field application;
— the field durability of filters.
This document is not applicable to protective ventilation systems which are manufactured before the
date of its publication as an EN.
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.
EN 474-1:2022, Earth-moving machinery - Safety - Part 1: General requirements
EN 474-5:2022, Earth-moving machinery - Safety - Part 5: Requirements for hydraulic excavators
EN 1822-1:2019, High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance
testing, marking
EN ISO 10121-1:2014, Test method for assessing the performance of gas-phase air cleaning media and
devices for general ventilation — Part 1: Gas-phase air cleaning media (ISO 10121-1:2014)
EN 12021:2014, Respiratory equipment - Compressed gases for breathing apparatus
EN 12341:2014, Ambient air - Standard gravimetric measurement method for the determination of the
PM10 or PM2,5 mass concentration of suspended particulate matter
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1
EN 12941:1998, Respiratory protective devices - Powered filtering devices incorporating a helmet or a
hood - Requirements, testing, marking
EN 13274-8:2002, Respiratory protective devices - Methods of test - Part 8: Determination of dolomite dust
clogging
EN 14387:2021, Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing,
marking
EN 15695-1:2017, Agricultural tractors and self-propelled sprayers - Protection of the operator (driver)
against hazardous substances - Part 1: Cab classification, requirements and test procedures
EN 60204-1:2018, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
2
EN 60529:1991, Degrees of protection provided by enclosures (IP Code)
EN ISO 2860:2008, Earth-moving machinery - Minimum access dimensions (ISO 2860:1992)
EN ISO 13766-1:2018, Earth-moving and building construction machinery - Electromagnetic compatibility
(EMC) of machines with internal electrical power supply - Part 1: General EMC requirements under typical
electromagnetic environmental conditions (ISO 13766-1:2018)
EN ISO 19014-3:2018, Earth-moving machinery - Functional safety - Part 3: Environmental performance
and test requirements of electronic and electrical components used in safety-related parts of the control
system (ISO 19014-3:2018)
EN ISO 29463-5:2022, High-efficiency filters and filter media for removing particles in air - Part 5: Test
method for filter elements (ISO 29463-5:2022)
ISO 6165:2022, Earth-moving machinery — Basic types — Identification and terms and definitions
ISO 10263-4:2009, Earth-moving machinery — Operator enclosure environment — Part 4: Heating,
ventilating and air conditioning (HVAC) test method and performance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6165:2022 and the following
apply.
ISO and IEC maintain terminology 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
contaminated area
area where hazardous agent is present in the ambient air
1
As amended by EN 12941:1998/A1:2003 and EN 12941:1998/A2:2008.
2
As amended by EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013.
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3.2
hazardous agents
chemical agent in the form dust, aerosol, vapour or gas, or biological agent, which can expose an operator
to a risk for his health
3.3
aerosol
suspension in air of solid particles, liquid particles or solid and liquid particles having a negligible falling
velocity
3.4
dust
finely divided, airborne and sedimented solid particles
3.5
protective ventilation systems
systems to provide breathing air indicate:
— particle filter systems or
— gas filter systems or
— breathing compressed air systems
3.6
prefilter
device to reduce the amount of particles before entering particle filter
Note 1 to entry: The prefilter efficiency is lower than the particle filter efficiency.
Note 2 to entry: The prefilter can be conducted as a mechanical device, e.g. cyclone, or with a filter material.
3.7
particle filter unit
air handling device to provide air with a reduced amount of dust and aerosol to the operator’s cab
Note 1 to entry: The system contains the air recirculation unit itself, a monitoring device and the particle filters.
3.8
gas filter unit
air handling device to provide air with a reduced amount of dust, aerosol, vapour and gas to the operator’s
cab
Note 1 to entry: The system contains the air recirculation unit itself, a monitoring device, a particle filters and gas
filters.
3.9
breathing compressed air unit
air handling device supplying breathable air independent of the atmosphere outside the cab and
consisting of:
— compressed air bottles, lines and fittings or
— lines and fittings providing breathing air to the operator's station
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Note 1 to entry: The system contains the air recirculation unit and a control device.
3.10
filter housing
enclosure where gas- and/or dust particle filters are placed
3.11
ambient air
ambient air indicates the air of the area where the machine is used. It may contain hazardous agents
3.12
monitoring device
device for monitoring and indicating the operating status and alarms of the protective ventilation unit. It
can be a stand-alone unit or an integrated part of the dash panel of the construction machine
3.13
recirculation unit
air handling device which solely filtering the air inside the cab without taking fresh air
3.14
overpressure
pressure above the atmospheric pressure
3.15
filters/filter elements
pack of filtration media
3.16
breathing air
filtered ambient air or air from compressed air units and filtered recirculating air
3.17
operator’s station
area on a ride-on machine from which an operator controls the functions of the machine
3.18
operator’s cab
enclosure on a ride-on machine from which an operator controls the functions of the machine
3.19
HVAC
Heating, Ventilation and Air Conditioning
4 Safety requirements and/or protective/risk reduction measures
4.1 General
This document describes requirements, test procedures and information to be provided by the
manufacturer for protective ventilation systems to provide breathing air to operator's stations on earth-
moving machinery used in contaminated areas.
NOTE Filters performances and filters are depending of risk assessment and national regulation.
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4.2 General requirements
4.2.1 Requirements for the operator's station
4.2.1.1 HVAC system
EN 474-1:2022, 4.3.2 applies with the following addition:
The operator's station shall be equipped with a HVAC in accordance with ISO 10263-4:2009.
4.2.1.2 Doors and windows
Doors, windows, flaps and their locking devices shall be so designed that no hazards will be created to
the operator during opening under pressure, e.g. by abrupt movements.
4.2.1.3 Respiratory protective device
A place for keeping an appropriate respiratory protective device (depending on the kind of protective
ventilation systems) to rescue oneself (means of escape) shall be provided at the operator's station and
be easily accessible.
4.2.2 Requirements for providing breathing air
4.2.2.1 Breathing air distribution
Consistent breathing air inlet and distribution shall be provided at the operator’s station. Breathing air
coming into the cab shall not be on floor level to avoid stirring of dust.
4.2.2.2 Breathing air filtration
Air inside the operator’s station shall be filtered by a recirculation unit. The filters shall be classified H13
according to dust classes to EN 1822-1:2019.
NOTE The filter class may depend on the application and on the country regulation.
4.2.2.3 Recirculating air flow rate
3
The filtered recirculating airflow shall be at least 50 m /h.
4.2.2.4 Fresh air flow rate
For machinery with dust filter units or gas filter units
3
The protective ventilation system shall provide at least 30 m /h of filtered fresh air.
3
The breathing air volume flow rate provided shall not exceed 120 m /h.
Air flow rate shall be measured according to Annex B.
For machinery with breathing compressors air used as protective ventilation systems
3
The air flow volume provided to the operator’s station shall have a minimum amount to 12 m per person
per hour under all normal use operating conditions.
Air flow rate shall be measured according to Annex B.
Instead of measuring the volume flow of the breathing air provided, carbon dioxide (CO ) can
2
alternatively be measured by a measuring device with alarm threshold. In the process, carbon dioxide
shall not exceed 0,18 % by vol. When this value is exceeded, the measuring device shall trigger an acoustic
or visual alarm.
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The measuring points of the measuring devices shall not be located in an area that corresponds to the
position of the operator’s mouth and nose, so that neither the breathing air provided at the inlet nor the
exhalation air at the outlet are measured. If necessary, the filament position centre point according to
ISO 5006:2017 can provide orientation. Malfunctions on measuring devices shall trigger an alarm by self-
monitoring.
4.2.2.5 Information on operating condition of protective ventilation system
An information plate shall be fitted easily visible within the operator's station to communicate the
following information:
"The system to provide breathing air shall be running while the openings (e.g. window(s), door(s)) of the
operator's station are closed!".
Pictorials may alternatively be used.
4.2.2.6 Emission sound pressure level at the operator's station
EN 474-1:2022, 4.13.2.2 applies.
Protective ventilation systems shall be so arranged, designed or capsuled that the permissible emission
sound pressure level (LpA) of 80 dB(A) at the operator's ear will not be exceeded during operation of the
machine.
4.2.2.7 Visibility
Protective ventilation systems shall be so arranged that the operator has sufficient visibility from the
operator's station in relation to the travel and work areas of the machine.
The requirements for the operator's field of view shall comply with EN 474-1:2022, 4.8.1.
For hydraulic excavators, the requirement for the operator’s field of view shall comply with
EN 474-5:2022, 4.6. These requirements shall also be met if breathing air supply systems are installed on
the earth-moving machine.
4.2.2.8 Vibration
Protective ventilation systems and their fastening system on the earth-moving machine shall withstand
a vibration test as described in EN ISO 19014-3:2018, 5.6.
4.2.2.9 Access
EN 474-1:2022, 4.2.1 applies.
Access to protective ventilation systems and locations for their mounting and maintenance shall comply
with EN ISO 2867:2011 "Earth-moving machinery – Access systems".
4.2.2.10 Maintenance
EN 474-1:2022, 4.22.1 applies.
Openings for mounting and maintenance of protective ventilation systems shall comply with
EN ISO 2860:2008 "Earth-moving machinery – Minimum access dimensions".
4.2.2.11 Filter unit handling
The filter unit (e.g. dust filter unit, gas filter unit) shall be provided with measures for safe handling.
4.2.2.12 Ventilation system mounting
By mounting of protective ventilation systems
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— access to other maintenance- and control stations on earth-moving machinery shall not be
obstructed
— the protective effect of roll-over protective structures (e.g. ROPS, TOPS) and protective structures
(e.g. FOPS) shall not be affected;
— installation of a protective ventilation system shall meet the requirements of EN 474-1:2022, 4.2.1
Access Systems and 4.3.2.3. Alternative opening (emergency exit).
4.2.2.13 Overpressure of the station
The operator's station and the breathing air inlet shall be so designed that during operation an
overpressure of at least 100 Pascal is maintained and an overpressure of 300 Pascal cannot be exceeded.
NOTE This limitation is applicable for the whole range of ventilation air flow, if relevant.
On the monitoring device shall be an indication that shows the operator that the recirculation filter is
fitted in the recirculation unit. If the filter is not fitted in the unit, the monitoring device shall give an
audible and visual alarm.
4.2.3 Requirements for control devices
4.2.3.1 Protective ventilation system control
The protective ventilation system shall start and stop automatically by starting and stopping the engine
or by activate the ignition of the earth moving machine.
During operation it shall be possible for the operator to start and stop the protective ventilation system
manually (e.g. in case of system malfunction, abnormal function). In this case the monitoring device shall
give an audible and visual alarm.
Further operation of the protective ventilation system when the engine stopped shall be indicated by an
acoustic and visual alarm to the operator, e.g. in order to avoid discharge of the battery.
4.2.3.2 Overpressure control
A permanent indicator for the overpressure at the operator’s station shall be provided within the
operator’s field of view.
It can be a stand-alone unit or an integrated part of the dash panel of the construction machine, placed in
the operator’s front field of view.
The indicator shall at least comprise the range of 0 Pascal to 400 Pascal ± 5 %. Accurate to a 10 Pascal
resolution.
The upper and lower limited value for the overpressure shall be clearly identified or be permanently
marked on the display.
4.2.3.3 Pressure warning device
In addition to the indicators a warning light and an audible warning device (horn) shall be provided
indicating a decrease of pressure below the lower limited value or an increase of pressure higher than
the permitted upper limited value to the operator. The warning device shall act with a delay time of less
than 20 s.
4.2.3.4 Warning of the activation of the protective ventilation system
A green (depend on the regulation of the country) light with an output of at least 40 Lumens output shall
be mounted so clearly visible on the machine or the protective ventilation system that a casual observer
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can notice the activation of the contamination protective system at all times and from all sides of the
machine.
The light shall automatically switch on when the protective ventilation system is activated and the cab
pressure is in between the limits.
4.2.3.5 Filter set warning
On the monitoring device shall be an indication that shows the operator that the filter is fitted in the filter
unit. If the filter is not fitted in the unit, the monitoring device shall give an acoustic or visual alarm.
4.2.4 Moving parts
Hazards by shearing, crushing or drawing-in by movements of machine parts and equipment shall be
prevented by design. Access to dangerous moving parts shall be prevented. This can be achieved by fitting
fixed or interlocked movable guards in accordance with EN ISO 14120:2015.
NOTE 1 For fans and rotary valves, fixed guards have been proven to be effective.
NOTE 2 EN ISO 12100:2010 sets out the general principles for the guarding of moving parts.
Fixed guards shall be installed when access is rarely necessary. Fixed guards that are to be removed as a
part of maintenance procedures, described in the operator's manual, shall be fixed by systems that can
be opened or removed only with tools. These guards fixing systems shall remain attached to the guards
or to the machinery when the guards are removed.
Where possible, fixed guards shall be incapable of remaining in place without their fixings.
4.2.5 Protection against electrical hazards
The requirements of EN 60204-1:2018 apply unless stated otherwise in this document.
The requirements regarding prevention of electric shock due to direct contact and the requirements
regarding protection against short circuits and overloading shall comply with EN 60204-1:2018.
The protection against electric shock due to indirect contact shall be ensured by automatic isolation
(circuit breaker or fuse) of the electrical power supply of the machine by the operation of a protective
device installed by the user in the line powering the machine.
Depending on the location/installation of electrical and electronic components, the following degrees of
protection are required:
— electronic controls, connectors in control circuits, multi-pin connectors and control switches external
to the cab, shall have a minimum protection of IP 55 of EN 60529:1991, EN 60529:1991/A1:2000
and EN 60529:1991/A2:2013;
— components installed in the operator's cab or protected against the environment, the protection shall
be designed and executed to safeguard a correct function under expected and intended conditions.
Live parts in electrical enclosures shall not be accessible in accordance with EN 60204-1:2018. Fire risk
is not present where power circuits are protected against over current in accordance with
EN 60204-1:2018.
4.2.6 Electromagnetic compatibility
Ventilation protective system fitted earth-moving machines shall comply with the requirements of
electromagnetic compatibility as specified in EN ISO 13766-1:2018.
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4.3 Special provisions for machinery with dust filter units or gas filter units
4.3.1 Common provisions
4.3.1.1 General
Dust filter units and gas filter units shall be so arranged, designed and tested that permanent seal seat of
filters in the casing is safeguarded.
4.3.1.2 Tightness of the air delivery and filtration system
Particle filter units and gas filter units shall comply with EN 15695-1:2017, Annex B.
4.3.1.3 Filters design
Filters shall be designed in such way that they cannot be installed in the reverse flow-through direction
and shall be readily replaceable without use of special tools and without any significant loss of captured
contaminant during removal.
4.3.1.4 Protective ventilation units design
Protective ventilation units shall be designed and con
...
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