Food processing machinery - Mincing machines - Safety and hygiene requirements

This European Standard specifies requirements for the design and manufacture of mincing machines used in a stationary position. The machines covered by this standard are used for size reduction of fresh or frozen meat, meat products and fish by cutting in a set of cutting tools. Mincing machines for domestic uses are not included in this standard. Filling mincers are covered by EN 12463$ "Food processing machinery - Filling machines and auxiliary machines - Safety and hygiene requirements". This standard applies only to machines that are manufactured after the date of issue of this standard. Mincing machines in connection with using a hold to run foot switch are not covered by this standard. This European Standard covers: - mincing machines used in shops and preparation rooms; - mincing machines used in kitchens where sausages are prepared; - mincing machines used industrially; - accessories. The extent to which hazards are covered, is indicated in this European Standard. For other hazards which are not covered by this European Standard, machinery should comply with EN ISO 12100 where applicable. This European Standard is not dealing with specific requirements for the control of mincing machines with foot switch.

Nahrungsmittelmaschinen - Wölfe - Sicherheits- und Hygieneanforderungen

1.1 Diese Europäische Norm legt Anforderungen an die Konstruktion und Herstellung von Wölfen (siehe Bilder 1 und 2), die stationär betrieben werden, fest. Die von dieser Norm erfassten Maschinen werden für die Zerkleinerung von frischem oder gefrorenem Fleisch, Fleischprodukten und Fisch durch Zerschneiden in einem Schneidsatz verwendet. Wölfe für den Hausgebrauch werden von dieser Norm nicht abgedeckt. Füllwölfe werden in prEN 12463 �Nah-rungsmittelmaschinen - Füllmaschinen und Vorsatzmaschinen - Sicherheits- und Hygieneanforderungen" behandelt. Diese Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Norm hergestellt werden.
Wölfe mit einem Fußschalter mit selbstständiger Rückstellung werden in dieser Norm nicht behandelt.
1.2 Diese Norm umfasst folgende Bauarten:
- Wolf mit Schale, Einfüllschacht und Stopfer, Durchmesser £ 52 mm am Einfüllschacht (siehe Bild 5),
- Wolf mit Schale, Einfüllschacht, Schutzplatte und Stopfer, Durchmesser > 52 mm am Einfüllschacht (siehe Bild 6),
- Wolf mit Einfülltrog und Deckel, Transportschnecke, mit ) oder ohne Mengwelle im Einfülltrog (siehe Bild 7),
- Wolf mit Einfülltrog, mit oder ohne Deckel, Transportschnecke, mit1) oder ohne Mengwelle im Einfülltrog, mit Beschickungseinrichtung (kontinuierlich oder diskontinuierlich).
Wölfe bestehen aus einem Maschinenständer, einem Schneckengehäuse mit Arbeitsschnecke, einer Einfüll-schale oder einem Einfülltrog, einer Transportschnecke (und manchmal einer zusätzlichen Mengwelle im

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

1.1 La présente Norme européenne spécifie les prescriptions relatives à la conception et à la fabrication des hachoirs (voir Figures 1 et 2) utilisés en position fixe.
Les machines couvertes par la présente norme sont utilisées pour hacher de la viande fraîche ou congelée, des produits à base de viande et du poisson, la coupe étant effectuée dans un ensemble de coupe. Les hachoirs à usage domestique ne sont pas couverts par la présente norme. Les poussoirs sont couverts par l’#EN 12463$ «Machines pour les produits alimentaires — Poussoirs et machines auxiliaires — Prescriptions relatives à la sécurité et à l’hygiène». La présente norme ne s’applique qu’aux machines fabriquées après sa date de publication. Les hachoirs utilisant un interrupteur à pied à action maintenue ne sont pas couverts par la présente norme.
#La présente Norme européenne couvre :
- les hachoirs utilisés dans les magasins et les laboratoires ;
- les hachoirs utilisés dans les cuisines pour la préparation des saucissons ;
- les hachoirs industriels ;
- les accessoires.
L'étendue des phénomènes dangereux couverts est indiquée dans la présente Norme européenne. Pour les autres phénomènes dangereux qui ne sont pas couverts par la présente Norme européenne, il convient que les machines soient être conformes à l'EN ISO 12100 lorsqu'elle s'applique.$
1.2 La présente norme couvre les types de machines suivants :
- hachoir avec plateau, goulotte d'alimentation et poussoir, diamètre de la goulotte d'alimentation  52 mm (voir Figure 5) ;
- hachoir avec plateau, goulotte d'alimentation, plaque protectrice et poussoir, diamètre de la goulotte d'alimentation > 52 mm (voir Figure 6) ;
- hachoir avec trémie d'alimentation et couvercle, hélice transporteuse, avec  ) ou sans vis mélangeuse dans la trémie d'alimentation (voir Figure 7) ; (...)

Stroji za predelavo hrane - Stroji za mletje mesa - Varnostne in higienske zahteve (vključno z dopolnilom A1)

Ta evropski standard določa zahteve za načrtovanje in izdelavo strojev za mletje mesa, ki se uporabljajo na stalnem mestu. Stroji, ki jih zajema ta standard, se uporabljajo za zmanjševanje velikosti svežega ali zamrznjenega mesa, mesnih izdelkov in rib z rezanjem z garnituro rezalnega orodja. Ta standard ne vključuje strojev za mletje mesa za domačo uporabo. Polnilne stroje za mletje mesa zajema EN 12463$ »Stroji za predelavo hrane – Polnilni stroji in pomožni stroji – Zahteve za varnost in higieno«. Ta standard velja samo za stroje, ki so bili izdelani po datumu izdaje tega standarda. Ta standard ne zajema strojev za mletje mesa v povezavi z uporabo pridržitvenega nožnega stikala. Ta evropski standard zajema: - stroje za mletje mesa, ki se uporabljajo v trgovinah in pripravljalnicah; - stroje za mletje mesa, ki se uporabljajo v kuhinjah, v katerih se pripravljajo klobase in salame; - stroje za mletje mesa za industrijsko uporabo; - pomožne pripomočke. Ta evropski standard navaja obseg kritja nevarnosti. Za druge nevarnosti, ki jih ta evropski standard ne zajema, morajo stroji ustrezati EN ISO 12100, kjer je ustrezno. Ta evropski standard ne obravnava posebnih zahtev za krmiljenje strojev za mletje mesa z nožnim stikalom.

General Information

Status
Withdrawn
Publication Date
19-Sep-2010
Withdrawal Date
17-Sep-2015
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
18-Sep-2015
Due Date
11-Oct-2015
Completion Date
18-Sep-2015

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Wölfe - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Hachoirs - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Mincing machines - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 12331:2003+A2:2010SIST EN 12331:2004+A2:2010en,fr,de01-oktober-2010SIST EN 12331:2004+A2:2010SLOVENSKI

STANDARD
SIST EN 12331:2004+A2:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12331:2003+A2
June 2010 ICS 67.260 Supersedes EN 12331:2003English Version
Food processing machinery - Mincing machines - Safety and hygiene requirements

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

Nahrungsmittelmaschinen - Wölfe - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 1 September 2003 and includes Amendment 1 approved by CEN on 12 December 2004and Amendment 2 approved by CEN on 20 May 2010.

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 CEN 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 CEN 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12331:2003+A2:2010: ESIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 2 Contents page Foreword ...................................................................................................................................................................... 30Introduction .................................................................................................................................................... 41Scope .............................................................................................................................................................. 42Normative references .................................................................................................................................... 73Terms and definitions ................................................................................................................................... 84List of hazards .............................................................................................................................................. 104.1General .......................................................................................................................................................... 104.2Mechanical hazards ..................................................................................................................................... 104.3Electrical hazards ........................................................................................................................................ 124.4Hazard from loss of stability ....................................................................................................................... 124.5Noise hazard ................................................................................................................................................. 124.6Hazards from use of gases and direct steam ........................................................................................... 134.7Hazards from non-compliance with ergonomic principles ..................................................................... 134.8Hazards from non-compliance with hygiene principles .......................................................................... 135Safety requirements and/or measures ...................................................................................................... 135.1General .......................................................................................................................................................... 135.2Mechanical safety ........................................................................................................................................ 145.3Electrical hazards ........................................................................................................................................ 245.4Hazards from loss of stability ..................................................................................................................... 265.5Noise reduction ............................................................................................................................................ 265.6Hazards from use of gases (N2, CO2 and steam) ...................................................................................... 275.7Ergonomic requirements ............................................................................................................................ 275.8Hygiene and cleaning .................................................................................................................................. 286Verification of safety requirements and/or measures .............................................................................. 317Information for use ...................................................................................................................................... 327.1General .......................................................................................................................................................... 327.2Operating instruction .................................................................................................................................. 327.3Operator training.......................................................................................................................................... 348Marking ......................................................................................................................................................... 34Annex A (normative)

Noise test code for mincing machines (grade 2) ............................................................... 35Annex B (normative)

Design principles to ensure cleanability of mincing machines ....................................... 37Annex C (normative)

Common hazards for food processing machines and reduction requirements applicable to mincing machines ................................................................................................................ 42Annex ZA (informative)

#Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC$ ........................................................................................... 44Bibliography .............................................................................................................................................................. 45

SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 3 Foreword This document (EN 12331:2003+A2:2010) has been prepared by Technical Committee CEN/TC 153 “Food processing machinery – Safety and hygiene specifications”, the secretariat of which is held by DIN. #deleted text$ 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 December 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1, approved by CEN on 2004-12-12 and Amendment 2, approved by CEN on 2010-05-20. This document supersedes EN 12331:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags!" and # $This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of #EU Directive(s)$. #For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.$ #deleted text$ According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 4 0 Introduction #This document is a type C standard as stated in EN ISO 12100. 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.$ 1 Scope 1.1 This European Standard specifies requirements for the design and manufacture of mincing machines

(see Figures 1 and 2) used in a stationary position. The machines covered by this standard are used for size reduction of fresh or frozen meat, meat products and fish by cutting in a set of cutting tools. Mincing machines for domestic uses are not included in this standard. Filling mincers are covered by

#EN 12463$ "Food processing machinery - Filling machines and auxiliary machines - Safety and hygiene requirements". This standard applies only to machines that are manufactured after the date of issue of this standard. Mincing machines in connection with using a hold to run foot switch are not covered by this standard. #This European Standard covers:  mincing machines used in shops and preparation rooms;  mincing machines used in kitchens where sausages are prepared;  mincing machines used industrially;  accessories. The extent to which hazards are covered, is indicated in this European Standard. For other hazards which are not covered by this European Standard, machinery should comply with EN ISO 12100 where applicable. This European Standard is not dealing with specific requirements for the control of mincing machines with foot switch.$ 1.2 This standard covers the following types:  Mincing machine with tray, feed intake and pusher, diameter < 52 mm on feed intake (see Figure 5)  Mincing machine with tray, feed intake, restrictor plate and pusher, diameter > 52 mm on feed intake (see Figure 6)  Mincing machine with feed intake hopper and cover, screw conveyor, with1) or without mixing screw in feed intake hopper (see Figure 7) SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 5  Mincing machine with feed intake hopper, with or without cover, screw conveyor, with1) or without mixing screw in feed intake hopper, with loading device (continuously or discontinuously) Mincing machines comprise a machine base, a worm casing with a worm, a feed intake tray or hopper, a screw conveyor (and sometimes an additional mixing screw in the feed intake hopper), a set of cutting tools, a lock nut, a loading device, a drive motor and, depending on machine type, electrical, hydraulic and pneumatic components. They will also have various safeguarding devices as examples in clause 5.

Key 1 2 3-4 5 LOCK NUT HOLE PLATE BLADE WORM WORM CASING

6 7 8 9 10 FEED INTAKE PUSHER RESTRICTOR PLATE TRAY ON/OFF SWITCH PROTECTIVE HOOD 11121314 FEED INTAKE HOPPER SCREW CONVEYOR COVER ON/OFF SWITCH PROTECTIVE HOOD 15161718 LOCK NUT PROTECTIVE HOOD WORM MACHINE RACK Figure 1 — Arrangement of a mincing machine with tray and restrictor plate Figure 2 — Arrangement of a mincing machine with feed intake hopper, cover and screw conveyor Mincing machines may be equipped e.g. with  an extraction claw,  an ejector or extractor,  a protective hood over the discharge outlet,  a cover over the inlet opening of the feed intake hopper,

 a transport carriage for the lock nut, the set of cutting tools, the worm and the screw conveyor,  a lifting device for the lock nut, the set of cutting tools, the worm and the screw conveyor,  a loading device.

1) #In this case, EN 13570 should be taken into consideration.$ SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 6 1.3 Intended use The fresh or frozen meat, meat product or the fish is fed manually or by means of the loading device into the mincing machine. The product is fed to the worm either by means of a pusher or a screw conveyor and size reduced in the set of cutting tools. It is not intended that mincing machines are cleaned with pressurized water. However, it is to be foreseen that it is difficult to guarantee that this method will never be used in practice. In order to deal with this eventuality, the requirements of 5.3.3.2 should apply. #This European Standard specifies all significant hazards, hazardous situations and events relevant to mincing machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). This European Standard specifies the hazards which can arise during commissioning, operation, cleaning, use, maintenance and decommissioning of the machine.$ SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 7

2 Normative references #The following referenced documents are indispensable for the application 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 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 1005-1, Safety of machinery — Human physical performance — Part 1: Terms and definitions EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements

(IEC 60204-1:2005, modified) EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 61496-1:2004, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) 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 11204:1995, 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) 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 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 8 EN ISO 13857:2008, Safety of machinery — Safety distance to prevent danger zones being reached by the upper limbs (ISO 13857:2008)$ 3 Terms and definitions #For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply.$ 3.1 platform accessible standing area 3.2 worm rotating screw-shaped component in the worm casing for meat transport to the set of cutting tools 3.3 step interlocked standing area 3.4 ejector/extractor device for detaching the set of cutting tools and the worm 3.5 extraction claw tool for detaching the set of cutting tools and the worm 3.6 loading device lift tilt device for the lifting and tilting of transport cars and containers 3.7 container device for holding products to be processed 3.8 cover movable device with safety function 3.9 feed intake housing between the tray and the worm casing 3.10 feed intake hopper container for holding the products to be processed with safety function 3.11 locking device device for locking the trolley or container in the load bearing device 3.12 trolley movable device for holding the products to be processed SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 9 3.13 design dimension sum of dimensions measured from the floor, in the case of steps, intermediate steps or platforms from the standing place to the hopper edge and from the hopper edge to the first danger point in the feed intake hopper (see Figures 8 and 9) 3.14 cooling mincer machine with a cooling device for the feed intake and the worm casing 3.15 light barrier/light curtain optical-electrical safety component 3.16 hole plate fixed plate with bores 3.17 mixing screw rotating screw-shaped component in the feed intake hopper above the screw conveyor for mixing the product 3.18 blade cutting tool with one or several blades 3.19 tray container for holding the product to be processed 3.20 mechanical bar movable device with safety function 3.21 worm casing casing for holding the worm and the set of cutting tools 3.22 cutting chamber chamber inside the worm casing for holding the set of cutting tools 3.23 set of cutting tools rough-cutter, blade and hole plate for size reduction of product 3.24 protective grid movable device on the feed intake hopper mouth 3.25 protective hood movable device on the discharge outlet 3.26 restrictor plate stationary non detachable device above the feed intake SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 10 3.27 pusher device used to push the product further in the feed intake 3.28 screw conveyor rotating screw-shaped component in the feed intake hopper for meat transport to the worm 3.29 transport carriage movable device for holding the lock nut, set of cutting tools, worm and screw conveyor 3.30 lock nut device for locking the set of cutting tools in the cutting chamber 3.31 preparation room room for preparation of sale products 4 List of hazards 4.1 General This clause and annex C contain the hazards and hazardous situations which may arise during operation of mincing machines as far as they are dealt with in this European Standard, identified by a risk assessment significant for this type of machinery and which require action identified to eliminate or reduce risk. Before using this standard it is important to carry out a risk assessment of the mincing machine to check that it has the hazards identified in this clause. 4.2 Mechanical hazards 4.2.1 Mincing machines with feed intake and worm

Zone 1

Rotating screw conveyor at the end of the feed intake (see Figure 3). Hazards of entanglement, shearing or severing of fingers or hand. 4.2.2 Mincing machines with feed intake hopper and screw conveyor/mixing screw  Zone 2 Rotating screw conveyor or mixing screw in the feed intake hopper (see Figure 4). Hazards of entanglement, shearing or severing of fingers, hand or forearm. 4.2.3 Discharge outlet on mincing machines  Zone 3 Rotating blade behind the hole plate at the discharge outlet (see Figure 4). SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 11 Hazards of shearing of fingers.
Key 1 2 3 ZONE 1 ZONE 2 ZONE 3 4 5 6 ZONE 4 ZONE 5 ZONE 6
9 10 ZONE
7 ZONE
8 ZONE

9 ZONE 10 Figure 3 — Mincing machine with feed intake - Danger zones Figure 4 — Mincing machine with feed intake hopper - Danger zones 4.2.4 Installation and removal of worm and set of cutting tools  Zone 4 Worm casing with worm and set of cutting tools at discharge outlet (see Figures 3 and 4). Hazard of crushing to hands and feet during installation and removal. 4.2.5 Drive mechanism  Zone 5 Drive of worm, screw conveyor and mixing screw (see Figure 4). Hazards of crushing, shearing or entanglement to fingers or hand. 4.2.6 Machine components e.g. cover over hopper edge  Zone 6 Unintentional shutting and intentional closing of the cover (see Figure 4). Hazards of crushing to fingers or hand. SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 12 4.2.7 Loading device on mincing machines (see Figure 4)  Zone 7 Space below transport carriage or container. Hazards of trapping or crushing on floor level during descent to the body. Hazards of impact during uncontrolled descent e.g. in the case of mechanical upsets to the body.  Zone 8 Path of movement of transport carriage and container. Hazards of impact from moving components to the body. Hazards of crushing or shearing between moving and stationary components of fingers or hand.  Zone 9 Drive elements and (where used) pulleys, chains or wire ropes. Hazard of drawing-in, shearing, crushing or entanglement of fingers or hand.  Zone 10 Discharge area. Hazards of impact or crushing from load-bearing device to finger or hand.  Other mechanical hazards Hazard of crushing or impact caused by tilting (loss of stability) to the body. 4.3 Electrical hazards 4.3.1 Direct or indirect contact with live parts Hazard of electric shock to the body. 4.3.2 Electrical components with insufficient safety level Hazard of mechanical injury to the body due to malfunction. 4.4 Hazard from loss of stability Hazard of impact or crushing, if the machine or the loading device topples over to the body. 4.5 Noise hazard Noise can lead to  permanent loss of hearing,  ringing in the ears (tinnitus),  fatigue, stress etc. SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 13 4.6 Hazards from use of gases and direct steam Leakage of gases such as e.g. carbon dioxide (CO2), nitrogen (N2) or direct steam  Hazard of suffocation,  Hazard of hot or cold burns. 4.7 Hazards from non-compliance with ergonomic principles  Unhealthy posture or excessive physical effort,  Inadequate consideration of human anatomy of hand/arm or foot/leg during machine design. Hazard of physical damage. 4.8 Hazards from non-compliance with hygiene principles  Microbial causes Hazard (spoilage) of foodstuff Hazard of damage to health of the user through food poisoning  Chemical causes Hazard (contamination) of foodstuff through residues of cleaning and disinfecting agents Hazard of damage to health of the consumer through harm

 Physical causes Foreign objects originating from raw materials, machines beings or other sources Hazard of damage to human health of the consumer trough harm 5 Safety requirements and/or 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 #EN ISO 12100$ for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges). #For hazards which are to be reduced by the application of the type B-standards such as EN 614-1, EN 953,

EN 1005-3, EN 1088, EN 1672-2, EN 60204-1, EN 60529, EN ISO 12100, EN ISO 13849-1 and

EN ISO 13857, the manufacturer shall carry out a risk assessment to establish the requirements of the type

B-standard. This specific risk assessment shall be part of the general risk assessment of the machine.$ Where the means of reducing the risk is by the arrangement or positioning of the installed machine, the manufacturer shall include in the Information for use a reference to the reduction means to be provided, and to any limiting value of the requirement, and, if appropriate, to the means of verification. Where the means of reducing the risk is by a safe system of working the machinery, the manufacturer shall include in the Information of installation, details of the system and of the elements of training required by the operating personnel. SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 14 5.2

Mechanical safety 5.2.1 General The machines shall be designed and constructed in accordance with the conditions mentioned below. The interlocking systems of guards shall comply with 4.2.1 of EN 1088:1995 and the safety-related #parts$ of the control system shall comply with #EN ISO 13849-1$. In addition interlocking systems shall be designed to satisfy all of the following features:  to fulfil hygienic requirements,  to protect against mechanical damages,  to protect against the effects of cleaning and disinfecting materials,  to protect against the effects of cleaning fluids (water),  to protect against tampering by simple methods  be contained in the machine casing and comply with 5.7 of EN 1088:1995. In the instruction handbook, the manufacturer shall indicate the daily verification of the interlocking device. #Fixing systems of fixed guards shall remain attached to these guards or to the machine when the guards are removed.$ 5.2.2 Measures at mincing machines with feed intake and worm  Zone 1 Access to the worm in the feed intake shall be protected. This may be achieved e.g. by the following measures (see Figures 5a, 5b, 5c): On the feed intake, the distance L between the upper feed intake edge and the worm shall be

L ≥ 100 mm on mincing machines with intake diameter D ≤ 46 mm L ≥ 120 mm on mincing machines with intake diameter 46 < D ≤ 52 mm (see Figures 5a, 5b, 5c).

Fixed tray
Removable tray

Removable tray Figure 5 — Feed intake without restrictor plate - Safety dimensions SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 15 On mincing machines with a removable tray, the dimensions specified on the feed intake shall be adhered to even when the tray has been removed (see Figures 5b and 5c). If the dimensions specified are not complied with, the tray shall be interlocked. #The interlocking system of the removable tray shall comply with 5.2.1 and the safety-related parts of the control system shall present at least a Performance Level "d” defined with a MTTFd “high” in accordance with

EN ISO 13849-1:2008.$ A pusher shall be supplied with the machine (see Figure 1). On mincing machines with a feed intake with diameter > 52 mm, a restrictor plate shall be provided. #Mounting of a fixed restrictor plate shall be in accordance with 3.25.1 of EN ISO 12100-1:2003 (see also 3.2 and 6.4.2 of

EN 953:1997).$ If the restrictor plate is removable, it shall be provided with an interlocking device. Openings in the restrictor plate shall have a diameter ≤ 52 mm. #The interlocking system of the removable restrictor plate shall comply with 5.2.1 and the safety-related parts of the control system shall present at least a Performance Level “d” defined with a MTTFd “high” in accordance with EN ISO 13849-1:2008.$ The dimensions and arrangement of the restrictor plate shall be in accordance with Figures 6a and 6b. When the mincing machine is running empty, the worm shall come to a standstill within 2 s after removal of, in one case the removable tray, or in the other case, the removable restrictor plate. The distance H (tray to lower edge of restrictor plate) shall be ≤ 40 mm based on an assumed metacarpus diameter of 40 mm.

The projection Ü (outer edge of restrictor plate to feed intake edge) shall be ≥ 40 mm (see Figure 6a). The safety distance L1 results from the dimension L = 230 mm (length of hand to wrist) + dimension x. Dimension x results from dimensions Ü (projection), distance H1 (tray to lower edge of restrictor plate) and F ∅ (feed intake diameter) with an assumed forearm and wrist diameter of 40 mm.

Distance H1 (tray to lower edge of restrictor plate) shall be ≤ 120 mm, and projection Ü (outer edge of restrictor plate to feed intake edge) shall be ≥ 40 mm (see Figure 6b). SIST EN 12331:2004+A2:2010

EN 12331:2003+A2:2010 (E) 16
Key
1 2 MIDDLE HAND FINGER 34 FORE ARM HAND H
40 mm
40 mm L
≥ 120 mm
120 mm Ü
40 mm
≥ 230 mm D
52 mm
52 mm F
≤ 85 mm
40 mm

≤ 200 mm Figure 6a — Feed intake with restrictor plate - Safety dimensions Figure 6b — Feed intake with restrictor plate - Safety dimensions

5.2.3 M
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