EN 13389:2005

Food processing machinery - Mixers with horizontal shafts - Safety and hygiene requirements

This European Standard specifies requirements for the design, installation, operation and maintenance of batch production fixed or tilting horizontal bowl type mixers with one or two rotating shafts with or without movable blades. These mixers are used to mix, knead and homogenise food for animal or human consumption in powder, paste or liquid form. The mixers can be floor mounted or transportable (with or without castors). They are intended to be used when stationary.
These machines are used in feed mills and factories which produce, work on or process foodstuff, for example biscuits, bread, chocolate, cereal products.
This European Standard does not deal with the use of the machine in potentially explosive atmospheres.
This European Standard deals with the significant hazards, hazardous situations and events relevant to mixers with horizontal shafts, when used as intended and under the conditions foreseen by the manufacturer.
This European Standard also specifies food hygiene requirements.
The feeding equipment, the dosing equipment, and the requirements of equipment for the supply of inert gases, and for heating and cooling, are excluded from the scope of this European Standard.
The hazards due to the unloading equipment (container, discharge belt, etc.) are not dealt with in this European Standard.
When drafting this European Standard, it has been assumed that the machines are not intended to be cleaned with a water jet.
This European Standard is not applicable to mixers with horizontal shafts which are manufactured before the date of publication of this European Standard by CEN.

Nahrungsmittelmaschinen - Mischmaschinen mit horizontalen Wellen - Anforderungen an die Sicherheit und Hygiene

Diese Europäische Norm spezifiziert die Anforderungen an die Konstruktion, die Installation, den Betrieb und die Wartung von Mischmaschinen mit horizontalem feststehendem oder kippbarem Bottich mit ein oder zwei Wellen, mit oder ohne bewegliche Messer für die Chargenproduktion. Diese Mischmaschinen werden für das Mischen, Kneten und Homogenisieren von Nahrungsmitteln in pulveriger, pastöser oder flüssiger Form für den Verzehr durch Tiere oder Menschen verwendet. Die Mischer können sowohl am Boden montiert, als auch transportierbar (mit oder ohne Rollen) sein. Es ist vorgesehen die Maschinen nur im Stillstand zu betreiben.
Diese Maschinen werden in Futterfabriken und in Fabriken eingesetzt, die Nahrungsmittel, zum Beispiel Kekse, Brot, Schokolade, Cerealien herstellen, bearbeiten und verarbeiten.
Diese Europäische Norm behandelt nicht den Einsatz dieser Maschinen in explosionsfähiger Atmosphäre.
Diese Europäische Norm erfasst signifikante Gefährdungen, Gefährdungssituationen und Ereignisse in Verbindung mit Mischern mit horizontalen Wellen, wenn diese so genutzt werden, wie vorgesehen und unter den vom Hersteller vorgegebenen Bedingungen.
In dieser Europäischen Norm werden ebenfalls Anforderungen an die Lebensmittelhygiene beschrieben.
Einrichtungen für Beladung und Dosierung sowie Anforderungen an Einrichtungen für die Zufuhr von Schutzgasen, für die Beheizung und für die Kühlung sind vom Anwendungsbereich dieser Europäischen Norm ausgeschlossen.
Die Gefährdungen in Verbindung mit der Entladeausrüstung  (Container, Förderband zum Entladen usw.) werden in dieser Norm nicht berücksichtigt.
Bei der Erstellung dieser Europäischen Norm wurde festgestellt, dass diese Maschinen nicht mit einem Hochdruckwasserstrahl zu reinigen sind.
Diese Europäische Norm ist nicht auf Mischmaschinen mit horizontalen Wellen anwendbar, die vor dem Datum der Veröffentlichung dieser Europäischen Norm durch CEN gebaut wurden.

Machines pour les produits alimentaires - Pétrins horizontaux - Prescriptions relatives à la sécurité et à l'hygiène

La présente Norme européenne spécifie les prescriptions relatives à la conception, à l’installation, au fonctionnement et à la maintenance des pétrins horizontaux destinés à la production industrielle, à cuve fixe ou basculante, à un ou deux arbres rotatifs, avec ou sans lames mobiles. Ces pétrins sont utilisés pour mélanger, pétrir ou homogénéiser de la nourriture destinée à la consommation animale ou humaine, sous forme de poudre, de pâte ou de liquide. Les pétrins peuvent être scellés au sol ou transportables (avec ou sans roulette). Ils sont destinés à être utilisés lorsqu’ils sont immobilisés.
Ces machines sont utilisées dans les usines qui fabriquent, travaillent ou traitent des produits alimentaires, par exemple des biscuits, du pain, du chocolat, des produits céréaliers.
La présente Norme européenne ne traite pas de l’utilisation de la machine en atmosphères potentiellement explosibles.
La présente Norme européenne traite des phénomènes dangereux significatifs, des situations et des événements dangereux associés aux pétrins horizontaux, lorsqu’ils sont utilisés dans le cadre de l'utilisation normale et dans les conditions prévues par le fabricant.
La présente Norme européenne spécifie également des prescriptions d'hygiène alimentaire.
Les équipements d'alimentation et de dosage, et les prescriptions relatives aux équipements pour l’alimentation en gaz inertes, et pour le chauffage et le refroidissement, sont exclus du domaine d'application de la présente Norme européenne.
Les phénomènes dangereux liés aux équipements de déchargement (conteneur, convoyeur, etc.) ne sont pas traités dans la présente Norme européenne.
Pendant l’élaboration de la présente Norme européenne, il a été admis que les machines ne sont pas destinées à être nettoyées au jet d’eau.
La présente Norme européenne ne s'applique pas aux pétrins horizontaux fabriqués avant la date de publication de la présente Norme européenne par le CEN.

Stroji za predelavo hrane – Mešalniki z vodoravno gredjo – Varnostne in higienske zahteve

General Information

• Status: Withdrawn
• Publication Date: 18-Oct-2005
• Withdrawal Date: 22-Dec-2009
• ICS: 67.260 - Plants and equipment for the food industry
• Technical Committee: CEN/TC 153 - Food processing machinery - Safety and hygiene specifications
• Drafting Committee: CEN/TC 153/WG 1 - Bakery equipment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 23-Dec-2009
• Completion Date: 23-Dec-2009
• Directive: 98/37/EC - Machinery
• Mandate: M/BC/CEN/88/13 - Standardization request to CEN/CENELEC relating to machinery
• Ref Project: SIST EN 13389:2006 - Food processing machinery - Mixers with horizontal shafts - Safety and hygiene requirements

Relations

• Merged Into: EN 13389:2005+A1:2009 - Food processing machinery - Mixers with horizontal shafts - Safety and hygiene requirements
• Effective Date: 10-Oct-2009

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2006
Stroji za predelavo hrane – Mešalniki z vodoravno gredjo – Varnostne in higienske
zahteve
Food processing machinery - Mixers with horizontal shafts - Safety and hygiene
requirements
Nahrungsmittelmaschinen - Mischmaschinen mit horizontalen Wellen - Anforderungen
an die Sicherheit und Hygiene
Machines pour les produits alimentaires - Pétrins horizontaux - Prescriptions relatives a
la sécurité et a l'hygiene
Ta slovenski standard je istoveten z: EN 13389:2005
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13389
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2005
ICS 67.260
English Version
Food processing machinery - Mixers with horizontal shafts -
Safety and hygiene requirements
Machines pour les produits alimentaires - Pétrins Nahrungsmittelmaschinen - Mischmaschinen mit
horizontaux - Prescriptions relatives à la sécurité et à waagerechten Wellen - Anforderungen an die Sicherheit
l'hygiène und Hygiene
This European Standard was approved by CEN on 1 August 2005.
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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13389:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms, definitions, mode of operation and description.6
4 List of significant hazards.8
5 Safety and hygiene requirements and/or protective measures.11
6 Verification of safety and hygiene requirements and/or protective measures .18
7 Information for use .20
Annex A (normative) Noise test code for mixers with horizontal shafts (Grade 2 of accuracy) .22
Annex B (normative) Principle of design to ensure the cleanability of mixers with horizontal
shafts .24
Annex ZA (informative) Relationship between this European Standard and the
Essential Requirements of EU Directive Machinery 98/37/EC, amended by
98/79/EC.40
Bibliography.41

Foreword
This European Standard (EN 13389:2005) has been prepared by Technical Committee CEN/TC 153 “Food
processing machinery — Safety and hygiene specifications”, 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 April 2006, and conflicting national standards shall be withdrawn at the
latest by April 2006.
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 EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this European
Standard.
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.
Introduction
This European Standard is a type C standard as stated in EN ISO 12100-1.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this European Standard.
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.
1 Scope
This European Standard specifies requirements for the design, installation, operation and maintenance of
batch production fixed or tilting horizontal bowl type mixers with one or two rotating shafts with or without
movable blades. These mixers are used to mix, knead and homogenise food for animal or human
consumption in powder, paste or liquid form. The mixers can be floor mounted or transportable (with or
without castors). They are intended to be used when stationary.
These machines are used in feed mills and factories which produce, work on or process foodstuff, for example
biscuits, bread, chocolate, cereal products.
This European Standard does not deal with the use of the machine in potentially explosive atmospheres.
This European Standard deals with the significant hazards, hazardous situations and events relevant to
mixers with horizontal shafts, when used as intended and under the conditions foreseen by the manufacturer.
This European Standard also specifies food hygiene requirements.
The feeding equipment, the dosing equipment, and the requirements of equipment for the supply of inert
gases, and for heating and cooling, are excluded from the scope of this European Standard.
The hazards due to the unloading equipment (container, discharge belt, etc.) are not dealt with in this
European Standard.
When drafting this European Standard, it has been assumed that the machines are not intended to be cleaned
with a water jet.
This European Standard is not applicable to mixers with horizontal shafts which are manufactured before the
date of publication of this European Standard by CEN.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 294:1992, Safety of machinery — Safety distance to prevent danger zones being reached by the upper
limbs.
EN 418:1992, Safety of machinery — Emergency stop equipment, functional aspects, principles for design.
EN 563:1994, Safety of machinery — Temperatures of touchable surfaces — Ergonomics data to establish
temperature limit values for hot surfaces.
EN 574:1996, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design.
EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and
movable guards.
EN 954-1:1996, Safety of machinery — Safety related parts of control systems — Part 1: General principles
for design.
EN 999, Safety of machinery — The positioning of protective equipment in respect of approach speeds of
parts of the human body.
EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design
and selection.
EN 1127-1, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and
methodology.
EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements.
EN 13478, Safety of machinery — Fire prevention and protection.
EN 60204-1:1997, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:1997).
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989).
EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound
pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994).
EN ISO 4287, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms,
definitions and surface texture parameters (ISO 4287:1997).
EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment
(ISO 4871:1996).
EN ISO 11201, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound
pressure levels at a work station and at other specified positions — Engineering method in an essentially free
field over a reflecting plane (ISO 11201/AC1:1995).
EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995).
EN ISO 12001, Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and
presentation of a noise test code (ISO 12001:1996).
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 ISO 13732-3, Ergonomics of the thermal environment - Touching of cold surfaces - Part 3: Ergonomics
data and guidance for application (ISO/DIS 13732-3:2002).
3 Terms, definitions, mode of operation and description
3.1 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003 and the
following apply.
3.1.1
fixed bowl mixer
mixer with a bowl which is fixed during filling, mixing and discharge
3.1.2
tilting bowl mixer
mixer with a bowl that tilts to allow filling and/or discharging of the mixer
3.1.3
mixing element
blade, plough, Z blade or other device attached to the main horizontal shafts used to mix the product
3.1.4
movable blade(s)
knife (knifes) fixed inside the bowl
3.1.5
side cutter
mixing device independently driven from the main drive shaft(s)
3.2 Mode of operation and normal operational use
The range of machines covered by this European Standard are designed to batch mix powdered, paste and
liquid products, the primary ingredient usually being flour.
When the mixing bowl is in its loading position, the machine receives the dry or wet ingredients, weighted or
metered. This operation is controlled by either the operator of the machine or automatically.
The machine mixes and/or melts ingredients during a time or with an energy based measurement.
When the mixing cycle is over, the product is unloaded into a mobile container, or into a fixed hopper or onto a
discharge belt, e. g. by tilting the mixing bowl.
The machine may be manually operated or completely automatic. The bowl may be heated or cooled.
3.3 Description
Typical mixers with horizontal shafts are shown in Figures 1a and 1b, with the following main elements:
a) rigid machine frame;
b) mixing bowl;
c) rotating mixing shafts;
d) main drive motor and gearbox;
e) bowl tilting mechanism;
f) electrical controls;
g) delivery device: discharge hopper, discharge belt or mobile container;
h) movable blades if any.
Figure 1a — "Z blade and tilting bowl" machine

Figure 1b — "Fixed bowl" machine
Figure 1 — Mixers with horizontal shafts
4 List of significant hazards
4.1 General
This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with
in this European Standard, identified by risk assessment as significant for this type of machinery and which
require action to eliminate or reduce the risk.
Before using this European Standard it is important to carry out a risk assessment of the mixer with horizontal
shafts to check that it has the hazards identified in this clause.
4.2 Mechanical hazards
The significant mechanical hazards are:
a) trapping points between the blades and the bowl;
b) trapping points between the bowl and machine frame during tilting of the bowl on tilting
...