SIST EN 13378:2002
(Main)Pasta processing plants - Pasta presses - Safety and hygiene requirements
Pasta processing plants - Pasta presses - Safety and hygiene requirements
This draft European Standard specifies the safety requirements for the design, manufacture and information for safe use of pasta presses (see clause 3) used in continuous automatic pasta processing lines. The pasta press begins with the dosing unit and ends with the die.
Maschinen zur Teigwarenherstellung - Pressen zur Teigherstellung - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm spezifiziert die Sicherheitsanforderungen in bezug auf die Konstruktion, die Herstellung sowie Informationen über den sicheren Gebrauch von Teigpressen (siehe Abschnitt 3), wie sie in kontinuierlichen automatischen Teigherstellungsanlagen mit einem Ausstoß von mehr als 100 kg/h verwendet werden.
Diese Europäische Norm spezifiziert die Sicherheitsanforderungen für die Gestaltung und Herstellung und gibt Informationen für den sicheren Gebrauch der oben genannten Maschinen, die als stationäre Einheiten klassifiziert und während des Betriebes nicht bewegt werden können.
Die Presse zur Teigwarenherstellung beginnt mit der Dosiereinheit und endet mit der Ausformung. Die Presse umfaßt folgende Prozesse:
- Dosierung von festen und flüssigen Zutaten
- Mischung der Zutaten
- Extrusion des Teiges
- Ausformung des Teiges
Die Schneideeinheit ist ausgeschlossen.
Diese Europäische Norm gilt nicht für:
- Haushaltsmaschinen
- halbautomatische Maschinen, sogenannte "Batchmaschinen".
Die signifikanten Gefährdungen, die durch diese Norm abgedeckt sind, werden im Abschnitt 4 dieser Norm aufgelistet.
Zusatzeräte, die nicht Bestandteil der Anlage sind (z. B. Trichter), werden von dieser Europäischen Norm nicht abgedeckt.
Diese Europäische Norm gilt nur für Maschinen, die nach dem Datum der Veröffentlichung dieser Norm hergestellt wurden.
Machines pour pâtes alimentaires - Presses pour pâtes alimentaires - Prescriptions de sécurité et d'hygiene
1 Domaine d'application
La présente Norme européenne spécifie les prescriptions de sécurité relatives a la conception, a la fabrication et aux informations pour une utilisation en toute sécurité des presses pour pâtes alimentaires (voir article 3) utilisées dans les lignes automatiques de transformation en continu des pâtes alimentaires pouvant produire plus de 100 kg/h.
La présente Norme européenne spécifie les prescriptions de sécurité relatives a la conception, a la fabrication et aux spécifications pour l'utilisation des machines susdites, désignées sous le nom de presses, classées dans la catégorie des unités fixes qui ne peuvent donc etre déplacées pendant leur fonctionnement.
Une presse pour pâtes alimentaires va de l'unité de dosage a la matrice. Une presse comprend les procédés suivants :
3 dosage des ingrédients liquides et solides ;
3 mélange des ingrédients ;
3 extrusion de la pâte ;
3 modelage de la pâte ;
L'unité de coupe est exclue.
La présente Norme européenne ne s'applique pas :
3 aux machines a usage domestique ;
3 aux machines semi-automatiques, également appelées "machines en discontinu".
Les phénomenes dangereux significatifs couverts par la présente norme sont énumérés a l'article 4.
Ces phénomenes dangereux, ainsi que les mesures a prendre pour les limiter sont décrits dans la présente norme européenne.
Les équipements auxiliaires qui ne font pas partie intégrante des machines (par exemple les trémies, les convoyeurs, etc?) ne sont pas couverts par la présente Norme européenne.
La présente Norme européenne s'applique principalement aux machines fabriquées apres?(date d'approbation par le CEN).
Stroji za izdelavo testenin - Iztiskovalnik testenin - Varnostne in higienske zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13378:2002
01-november-2002
Stroji za izdelavo testenin - Iztiskovalnik testenin - Varnostne in higienske zahteve
Pasta processing plants - Pasta presses - Safety and hygiene requirements
Maschinen zur Teigwarenherstellung - Pressen zur Teigherstellung - Sicherheits- und
Hygieneanforderungen
Machines pour pâtes alimentaires - Presses pour pâtes alimentaires - Prescriptions de
sécurité et d'hygiene
Ta slovenski standard je istoveten z: EN 13378:2001
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
SIST EN 13378:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 13378:2002
---------------------- Page: 2 ----------------------
SIST EN 13378:2002
EUROPEAN STANDARD
EN 13378
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 67.260
English version
Pasta processing plants - Pasta presses - Safety and hygiene
requirements
Machines pour pâtes alimentaires - Presses pour pâtes Maschinen zur Teigwarenherstellung - Pressen zur
alimentaires - Prescriptions relatives à la sécurité et à Teigherstellung - Sicherheits- und Hygieneanforderungen
l'hygiène
This European Standard was approved by CEN on 10 February 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13378:2001 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 13378:2002
Page 2
EN 13378:2001
CONTENTS
FOREWORD.3
Introduction.3
1 Scope.4
2 Normative references .4
3 Definitions, terminology and description .6
4 List of hazards .7
4.1 Mechanical hazards .7
4.2 Electrical hazards .8
4.3 Thermal hazard.8
4.4 Noise hazard.8
4.5 Hazards due to slip, trip and fall.8
4.6 Hazard due to neglecting hygienic principles.8
4.7 Harmful substance.8
5 Safety requirements and/or measures .10
5.1 Mechanical hazards .10
5.2 Electrical hazards .12
5.3 Thermal hazard.13
5.4 Noise reduction.13
5.5 Protective measures against slip, trip and fall.13
5.6 Protective measures against hazards due to neglecting hygienic principles .13
5.7 Harmful substance.14
6 Verification of the safety requirements and /or measures.14
7 Information for use (see clause 5 of EN 292-2: 1991).14
7.1 Technical information .14
7.2 Indicators.15
7.3 Marking .15
ANNEX A (normative) Principles of design to ensure the cleanability of machinery.17
A.1 Terms and definitions .17
A.2 Material of construction.17
A.3 Design.18
ANNEX B (normative) Noise test code - Grade 2 or 3 .27
B.1 Terms and definitions .27
B.2 Installation and mounting conditions.27
B.3 Operating conditions.27
B.4 Measurements .27
B.5 Emission sound pressure level determination .28
B.6 Sound power level determination .28
B.7 Measurement uncertainties .28
B.8 Information to be recorded .28
B.9 Information to be reported .28
B.10 Declaration and verification of noise emission value.29
ANNEX ZA (informative) Relationship of this document with EC Directives .30
Bibliography .31
---------------------- Page: 4 ----------------------
SIST EN 13378:2002
Page 3
EN 13378:2001
FOREWORD
This European Standard has been prepared by Technical Committee CEN/TC 153 "Food
processing machinery", the secretariat of which is held by DIN.
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 2001, and conflicting national
standards shall be withdrawn at the latest by October 2001.
This standard is one of a series of safety standards for machines used in continuous
pasta processing plants.
This European standard has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association, and supports
essential requirements of EC directive(s).
For the relationship with EC directive(s), see informative Annex ZA which is an integral
part of this standard
The annexes A and B are normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Introduction
This European Standard has been prepared to be a harmonized standard providing a
means of conforming with essential safety requirements of the UE "machinery directive"
and associated EFTA regulations.
This European Standard is a type C standard as stated in EN 1070. The machinery
concerned and the extent to which hazards are covered are indicated in the scope of this
standard.
In addition, the machinery shall comply as appropriate with EN 292 for hazards which
are not covered by this European Standard.
The machine, for which this European standard applies, can cause certain hazardous
situations to the operators, due to their moving parts, drive components and electrical
equipment.
Besides the specific hygiene requirements common to all food processing machines,
pasta presses also comply with the requirements covering cleanability described in the
present European Standard.
---------------------- Page: 5 ----------------------
SIST EN 13378:2002
Page 4
EN 13378:2001
1 Scope
This European Standard specifies the safety requirements for the design, manufacture
and information for safe use of pasta presses (see clause 3) used in continuous
automatic pasta processing plants able to produce more than 100 kg/h.
This European Standard specifies the safety requirements for the design, manufacture
and information for use for the machines mentioned above, known with the name of
presses, classified as stationary units which cannot be moved when in operation.
The pasta press begins with the dosing unit and ends with the die. The press includes
the following processes:
- dosing solid and liquid ingredients,
- mixing the ingredients,
- extruding the dough,
- forming the dough.
Cutting unit is excluded.
This European Standard does not apply to:
- household machines,
- batch machines.
The significant hazards covered by this standard are listed in clause 4.
These hazards, as well as the measures for their reduction, are described in the present
European Standard
Ancillary equipment, which is not an integral part of the press (e.g. hoppers, conveyors,
etc), is not covered by this European Standard.
This European Standard applies to machines which are manufactured after .( date of
issue of approval by CEN).
2 Normative references
This European Standard incorporates, by dated or undated references, provisions from
other publications. These normative references are cited at the appropriate place in the
text and the publications are listed hereafter. For dated references, subsequent
amendments 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 292-1:1991 Safety of machinery - Basic concepts, general principles for
design - Part 1: Basic terminology, methodology
EN 292-2:1991/A1:1995 Safety of machinery - Basic concepts, general principles for
design - Part 2: Technical principles and specifications
EN 294:1992 Safety of machinery - Safety distances to prevent danger
zones being reached by the upper limbs
EN 349:1993 Safety of machinery - Minimum gaps to avoid crushing of
parts of the human body
EN 418 Safety of machinery - Emergency stop equipment,
functional aspects - Principles for design
---------------------- Page: 6 ----------------------
SIST EN 13378:2002
Page 5
EN 13378:2001
EN 457 Safety of machinery - Auditory danger signals - General
requirements, design and testing (ISO 7731:1986,
modified)
EN 954-1:1996 Safety of machinary - Safety related parts of control
systems – Part 1:General principle for design
EN 982:1996 Safety of machinery - Safety requirements for fluid power
system and components - Hydraulics
EN 983:1996 Safety of machinery - Safety requirements for fluid power
system and components - Pneumatics
EN 1070 Safety of machinery - Terminology
EN 1088:1995 Safety of machinery - Interlocking devices associated with
guards - Principles for design and selection
EN 1672-2: 1997 Food processing machinery - Basic concept - Part 2:
Hygiene requirements
EN 60204-1:1997 Safety of machinery - Electrical equipment of machines -
Part 1: General requirements (IEC 60204-1:1997)
EN 60529: 1991 Degrees of protection provided by enclosures (IP code)
(IEC 60529: 1989)
prEN 1005-2:1998 Safety of machinery - Human physical performance -
Part. 2: Manual handling of objects associated to
machinery
prEN ISO 14122-1:1999 Safety of machinery - Permanent means of access to
machines and industrial plants - Part. 1: Choice of a fixed
means of access between two levels (ISO/FDIS
14122-1:1999)
prEN ISO 14122-2:1999 Safety of machinery - Permanent means of access to
machines and industrial plants - Part. 2: Working platforms
and walkways (ISO/FDIS 14122-2:1999)
prEN ISO 14122-3:1999 Safety of machinery - Permanent means of access to
machines and industrial plants - Part. 3: Stairways,
stepladders and guard-rails (ISO/FDIS 14122-3:1999)
prEN ISO 14122-4:1999 Safety of machinery - Permanent means of access to
machines and industrial plants - Part. 4: Fixed ladders
(ISO/FDIS 14122-4:1999)
EN ISO 3744 Acoustics - Determination of sound power levels of noise
sources using sound pressure - Engineering method
employing an enveloping measurement surface in an
essentially free field over a reflecting plane (ISO
3744:1994)
EN ISO 3746 Acoustics - Determination of sound power levels of noise
sources – Survey method using an enveloping
measurement surface over a reflecting plane (ISO
3746:1995)
EN ISO 4871: 1996 Acoustics - Declaration and verification of noise emission
values of machinary and equipment (ISO 4871:1996)
---------------------- Page: 7 ----------------------
SIST EN 13378:2002
Page 6
EN 13378:2001
EN ISO 9614-1:1995 Acoustics - Determination of sound power levels of noise
sources using sound intensity– Part 1: Measurement at
discrete points (ISO 9614-1:1993)
EN ISO 9614-2 Acoustics - Determination of sound power levels of noise
sources using sound intensity– Part 2: Measurement by
scanning (ISO 9614-2:1996)
EN ISO 11204 Acoustics - Noise emitted by machinery and equipment -
Measurement of emission sound pressure levels at a work
station and at other specified positions - Method requiring
environmental corrections (ISO 11204:1995)
EN ISO 11688-1 Acoustics - Recommended practice for the design of low-
noise machinery and equipment - Part 1: Planning (ISO/TR
11688-1:1995)
ISO 468 Surface roughness - Parameter values and general rules
for specifying requirements
IEC 60332-1 Test on electrical cables under fire conditions – Part 1:Test on a
single vertical insulated wire or cable
3 Definitions, terminology and description
For the purposes of this European Standard the terms and definitions given in EN 1070
apply.
Additional terms and definitions specifically needed for this European Standard are listed
below (see figure 1).
3.1
continuous working machine
machine with non stop product cycle. The raw materials are fed automatically into the
machine and the end product is extruded without a break.
3.2
batch machine
machine where the raw materials are pressed in separate units. The raw material are fed
into the machine under manual control and the machine is emptied before another cycle
is started.
3.3
dosing unit
assembly where solid and liquid ingredients are measured and transferred into the
mixing unit by means of volumetric or gravimetric devices
3.4
mixing unit
assembly where ingredients, coming from dosing unit, are mixed until becoming a
homogeneous dough which is transferred into the compression unit. This unit can be
equipped with one or more mixing tanks or similar devices.
3.5
compression unit
assembly where the dough is pressed and transferred to the forming units. This unit can
be equipped with one or more compression screws, rotating into barrels. Each barrel can
be equipped with screw extractor.
---------------------- Page: 8 ----------------------
SIST EN 13378:2002
Page 7
EN 13378:2001
3.6
forming unit
assembly where the dough pushed through by the compression unit is shaped. It is
composed of one or more heads, containing a die. Heads are normally equipped with
devices against overpressure. Big machines, due to the big size of their dies, are
equipped with automatic devices to extract and insert dies.
4 List of hazards
This clause covers all hazards, as far as they are considered in this European Standard,
and identified by risk assessment significant for this type of machinery and requiring an
action to eliminate or reduce risk.
4.1 Mechanical hazards
The significant mechanical hazards are:
- crushing hazard;
- cutting or severing hazard;
- entanglement hazard;
- shearing hazard;
- fluid ejection hazard;
- impact hazard.
The examples shown in figure 1 illustrate the danger zones associated with these
hazards.
4.1.1 Moving transmission parts
Zone 1 includes transmission parts, e.g. belts, chains, shafts, which may cause hazards
like shearing, crushing, and entanglement of fingers, hands and arms.
4.1.2 Moving parts contributing to the work
Zone 2 includes moving parts contributing to the work, e.g. paddles of the mixing and
pre-mixing units, rotating chambers, compression and feeding screws which may cause
hazards like entanglement, shearing, cutting or severing of fingers, hands, arms or the
whole body.
4.1.3 Mobile parts
Zone 3 includes mobile parts which need to be handled due to cleaning, maintenance or
changing production, e.g. shafts, screws, dies, pre-dies, covers. These parts may cause
hazards like crushing and cutting of parts of the body.
4.1.4 Ejection of parts
Zone 4 includes parts which may be ejected due to overpressure in the compression and
forming units, e.g. bolts, nuts and screws. This may cause impact hazards to the body.
4.1.5 Ejection of fluids
Hydraulic and pneumatic systems used i.e. extract or insert dough, opening cover, etc.
may cause ejection of hydraulic oil or high pressure air which cause impact when
whipped from flexible pipes.
4.1.6 Hazards due to unexpected start or failure of emergency device
Unexpected start up or failure of emergency device may cause hazard of contact with
dangerous moving parts, with the consequences listed in 4.1, 4.2, 4.3.
---------------------- Page: 9 ----------------------
SIST EN 13378:2002
Page 8
EN 13378:2001
4.2 Electrical hazards
Hazards of electric shock from direct or indirect contact with live components.This
hazard is present in control consoles, driving boards, motor connectors, electrical
resistances, etc.
Hazard of external influence on electrical components.This hazard is present in running
operation of the press (e.g. caused by interference to control signals or by cleaning with
water or steam) .
4.3 Thermal hazard
Risks of burns exist by touching pipes when machines operate with hot fluids for dough
or for barrel/head conditioning. Electrical motors and gearboxes can reach dangerous
temperatures on their external surface.
4.4 Noise hazard
Noise generated by presses can lead to
- permanent loss of hearing
- ringing in the ears
- fatigue, stress
- interference with speech communication, acoustic signals.
4.5 Hazards due to slip, trip and fall
Walkways, stairs and gangways may cause hazards like slip, trip and fall.
4.6 Hazard due to neglecting hygienic principles
Neglecting hygienic principles may create a risk to human health and unacceptable
modifications to foodstuff i.e. contamination by microbial growth or foreign materials.
4.7 Harmful substance
The use of a cleaning agent may cause harm to the skin, eyes and respiratory system by
direct contact or by ingestion.
---------------------- Page: 10 ----------------------
SIST EN 13378:2002
Page 9
EN 13378:2001
Key
1 Dosing units 2 Mixing units 3 Compression units 4 Forming units
Figure 1 - Pasta press
---------------------- Page: 11 ----------------------
SIST EN 13378:2002
Page 10
EN 13378:2001
5 Safety requirements and/or measures
Presses shall comply with requirements and/or measures of this clause.
5.1 Mechanical hazards
Any gaps between moving parts and the press framework shall be so arranged that either it is
not possible for a finger to enter the gap (i.e. a gap of 6 mm or less) or the gap is sufficientely
large to prevent trapping and crushing.
The minimum distance given in table 1 of EN 349:1993 shall be strictly observed.
5.1.1 Moving transmission parts
Access to drive shafts, coupling between the motor and reduction gear and transmission belts
shall be prevented by fixed guard in accordance with 4.2.2.2 of EN 292-2: 1991. The safety
distances of EN 294: 1992 shall apply. For reaching over protective structures table 2 of
EN 294: 1992 applies.
5.1.2 Moving parts contributing to the work
Access to moving parts contributing to the work with easy access, e.g. paddles of mixing units
shall be prevented by cover or movable guard . The cover and movable guard shall be
provided with interlocking devices with guard locking in accordance with 5.7 of EN 1088:
1995.
The safety related to the control systems shall comply with category 1 of EN 954-1:1996.
Moving parts contributing to the work which are inside the machine structure/frame and shall
not be reached through openings ( see EN 294 ) shall be protected with fixed guards.
5.1. 3 Mobile parts
For easy and safe handling of mobile parts, see 6.2.3 of EN 292-2: 1991. For the weight limits
see 4.3.1.1 of prEN 1005-2: 1993.
Covers when in opening position shall have a device keeping the covers in a stable position. In
case of power actuated covers, they shall be operated by a hold-to-run control device.
In case of power failure the covers shall remain stable in their position.
If the insertion and extraction devices for dies and screws are mechanized access to moving
parts shall be prevented by an interlocking guard or the movement controlled by the hold-to-
run control device.
5.1.4 Ejection of parts
Ejection of parts of the machine due to the lack of safety device against overpressure shall be
prevented by means of mechanical devices ( e.g. a fixed guard containing the ejected bolts).
5.1.5 Fluid ejection
Water, superheated water, steam and diathermic oil piping systems together with their
intercepting and controlling devices shall be designed for a pressure 1,5 times of the maximum
working pressure.
---------------------- Page: 12 ----------------------
SIST EN 13378:2002
Page 11
EN 13378:2001
Hydraulic and pneumatic systems shall be designed and manufactured according to EN 982
and EN 983.
5.1.6 Unexpected start or failure of emergency device
To avoid hazard due to unexpected start up or failure of emergency device, control circuits and
control functions shall conform with EN 60204-1 :1997, clause 9 with the following
requirements.
5.1.6.1 Supply disconnecting device
Each machine shall be equipped with a supply disconnecting device according to 5.3 of
60204–1 :1997 (options a, b, c) capable of being equipped with means to lock them in the off
position (e.g. trapped key system). The manually operated elements of controls shall be easily
and safely accessible and be designed, mounted and marked so as to allow instant recognition
of their purpose, as well as direction and condition of switching (see bibliography ISO 447).
These requirements shall apply to each separate control zone.
5.1.6.2 Emergency stop device
Each machine shall be equipped with emergency stop devices in accordance with 10.8 of
60204–1 :1997 category 0 and according with EN 418 on the control panels end at the
interface with other machines (e.g. dryer or spreader) .
5.1.6.3 Control circuits and control functions of stop device
Stop device (not for emergency) shall be in category 1 in accordance with 9.2.2 of
60204–1 :1997.
5.1.6.4 Safety related parts of control system
Safety related parts of control system shall be in accordance with 6.2.4 of EN 954-1 : 1996
category 1.
5.1.6.5 Automatic start warning
Where any form of automatic starting is provided, machines shall be equipped with a start-up
warning device, complying with EN 457, to alert people to leave the danger zone.
5.1.6.6 Safety limit device
Safety limit devices shall be in accordance with 10.1.4 of 60204–1 :1997 and be arranged in
such a way that they cannot be overrided.
5.1.6.7 Interlocking system of guards
Interlocking system of guards shall:
- comply with 5.2, 5.3, 5.4, 4.5, 5.6, 5.7 and 5.8 of EN 1088 :1995
- comply with hygiene requirements of EN 1672-2 and annex A of this standard
- be protected from the action of cleaning and disinfection agents, oil and liquids.
5.1.6.8. Other requirements
The level of performance of safety devices shall be consistent with the control system into
which they are integrated.
---------------------- Page: 13 ----------------------
SIST EN 13378:2002
Page 12
EN 13378:2001
Control activated devices, signal and display elements shall have a degree of protection IP
54 (see EN 60529 :1991)
Interlocking system with movable parts shall have a degree of protection of IP X5.
5.1.6.9 Controls for maintenance operations
If during maintenance operations the press has to work with open guards, an increased
safety shall be provided, i.e. the machine shall be designed to allow the introduction of a
device, which permits the operator to override the control panel (see 3.7.10 of EN 292 –2 :
1995), and to operate a specific moving part from a safe position e.g. a portable control
device that plugs into a local control position. The local control shall be equipped with a
hold-to-run control allowing low speed or limited movements. The local control shall also be
provided with emergency stop device.
5.2 Electrical hazards
Unless stated otherwise, all electrical equipment associated with the machine shall comply
with the requirements of EN 60204-1: 1997 as indicated in this clause.
5.2.1 Protection against electric shock
5.2.1.1 Direct contact
Live parts shall be located inside enclosures that provide protection against direct contact of
at least IP2X as defined in EN 60529:1991. The opening of enclosure shall only be possible
by using a key or tool, or by disconnecting the live parts before opening the enclosure (see
6.2.2 options a and b of EN 60204-1: 1997).
5.2.1.2 Indirect contact
Protection against indirect contact due to insulation failure between live parts and exposed
conductive parts, can be achieved by :
- use of class II equipment or by equivalent insulation (see 6.3.2 of EN 60204-1: 1997);
or
- use of automatic disconnection of supply; this protective measure comprises both (see
6.3.3 of EN 60204-1: 1997) :
- the connection of exposed conductive parts to the protective bonding circuits, and
- the use of protective device for the automatic disconnection of the supply in the
event of an insulation failure in TN or TT systems
- or the use of PELV (see 6.4 of EN 60204-1: 1997).
5.2.2 Degrees of protection (see 12.3 of EN 60204-1: 1997)
Enclosure of controlgear shall provide a degree of protection at least IP54. Enclosures used
in locations that are cleaned with low pressure water jet, shall be at least IP 55.
5.2.3 Cable section and colours
The cable sections shall be in accordance to what is indicated in Annex C of EN 60204-1:
1997.
Colours of cable shall be in accordance with 14.2 of EN 60204-1: 1997.
The cables used in pasta presses shall be in accordance wit
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.