SIST EN 12855:2004+A1:2010

Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements

This European Standard specifies requirements for bowl cutters used when stationary and positioned on the floor or at table height. Bowl cutters are food machines used to process fresh or frozen meat, meat products, fish and vegetables in a rotating bowl. This is performed by means of vertical blades rotating around a nearly horizontal axis. !This European Standard deals with all significant hazards, hazardous situations and events relevant to rotating bowl cutters, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer . This European Standard specifies the hazards which can arise during commissioning, operation, cleaning, use, maintenance and decommissioning of the machine. This standard only applies to machines which are manufactured after the date of issue of this standard. This standard covers the following types of bowl cutters according to the diameter (D) or the volume (V) of the bowl: Type 1 bowl cutters D < 700 mm or 2 l ≤ V ≤ 30 l Type 2 bowl cutters 700 mm < D < 1 200 mm or 30 l < V ≤ 120 l Type 3 bowl cutters D > 1 200 mm or V > 120 l For type 2 and type 3 bowl cutters, loading devices are also covered in this standard. Bowl cutters are constructed, for example, from a machine frame, a bowl, a set of cutting blades, a blade shaft, a blade cover, a noise cover, a loading and removal device, an associated drive and electrical, hydraulic and pneumatic components and also components for fumigating, vacuuming, heating and cooling according to machine type.

Nahrungsmittelmaschinen - Kutter mit umlaufender Schüssel - Sicherheits- und Hygieneanforderungen

1.1 Diese Europäische Norm legt Anforderungen an die Konstruktion und Herstellung von Kuttern (siehe Bild 1) fest, die stationär betrieben werden und auf dem Boden oder auf einem Tisch aufgestellt werden.
Kutter sind Nahrungsmittelmaschinen, die für die Verarbeitung von frischem oder gefrorenem Fleisch, Fleischprodukten, Fisch und Gemüse in einer umlaufenden Schüssel verwendet werden. Dies geschieht mit vertikalen Messern, die sich um eine nahezu horizontale Achse drehen. Diese Europäische Norm betrachtet Gefährdungen, die durch die Konstruktion, die Bedienung, die Aufstellung und die Wartung von Kuttern entstehen, wenn sie wie vom Hersteller beabsichtigt betrieben werden. Die bestimmungsgemäße Verwendung der Maschinen ist in Abschnitt 7 dieser Norm "Benutzerinformation" beschrieben.
Kutter für den Hausgebrauch werden nicht von dieser Norm erfasst.
1.2   Diese Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Norm hergestellt werden.
1.3   Diese Norm umfasst folgende Bauarten von Kuttern, abhängig vom Durchmesser (D) oder vom Volumen (V) der Schüssel:
- Kutter der Baugröße 1
D < 700 mm oder 2 l < V < 30 l
- Kutter der Baugröße 2
   700 mm < D  < 1200 mm oder 30 l <  V <  120 l
- Kutter der Baugröße 3
   D > 1200 mm oder V > 120 l
In dieser Norm werden auch Beschickungseinrichtungen für Kutter der Baugrößen 2 und 3 behandelt.
Kutter bestehen z. B. aus Maschinengestell, Schüssel, Messerschneidsatz, Messerwelle, Messerschutz-haube, Lärmschutzdeckel, Beschickungs-, Entnahmeeinrichtung, zugehörigem Antrieb und elektrischen, hydraulischen und pneumatischen Komponenten sowie Komponenten zum Begasen, Vakuumieren, Heizen und Kühlen je nach Maschinenart.
ANMERKUNG   Bei der Erstellung dieser Norm wurde vorausgesetzt, dass die Maschinen von ausgebildetem Personal betrieben werden.
Legende
  1   Lärmschutzdeckel
  2   Messerschutzhaube
  3   Auswerfer
  4   Pilz
  5   Schüssel
  6   Steuerorgane
  7   Handschutzlappen
  8   Maschinengestell
  9   Beschickungseinricht

Machines pour les produits alimentaires - Cutters à cuve tournante - Prescriptions relatives à la sécurité et à l'hygiène

1.1 La présente Norme européenne spécifie les prescriptions relatives aux cutters (voir Figure 1) utilisés en mode stationnaire et positionnés sur le sol ou à hauteur de table.
Les cutters sont des machines utilisées pour la transformation de viandes fraîches ou congelées, de produits à base de viande, de poissons et de légumes dans une cuve tournante. Cela est réalisé à l’aide de couteaux verticaux tournant autour d’un axe proche de l’horizontale. !La présente Norme européenne traite de tous les phénomènes dangereux significatifs, situations et évènements dangereux spécifiques aux cutters à cuve tournante, lorsqu'ils sont utilisés normalement ou dans des conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant (voir Article 4).
La présente Norme européenne spécifie les phénomènes dangereux pouvant se produire lors du démontage, du fonctionnement, du nettoyage, de l'utilisation, de la maintenance et de l'arrêt définitif de la machine."
La présente norme ne s’applique pas aux cutters à usage domestique.
1.2   La présente norme ne s’applique qu’aux machines fabriquées après sa date de publication.
1.3   La présente norme définit les types de cutters suivants en fonction du diamètre (D) ou du volume (V) de la cuve.
-   Cutters de type 1
D < ou = 700 mm ou 2 l < ou = V < ou = 30 l
-   cutters de type 2
700 mm < D < ou = 1 200 mm ou 30 l < V < ou =120 l
-   cutters de type 3
D > 1 200 mm ou V > 120 l
Les dispositifs de chargement pour les cutters des types 2 et 3 sont également couverts par la présente norme.

Stroji za predelavo hrane - Rezalniki z vrtljivo posodo - Varnostne in higienske zahteve (vključno z dopolnilom A1)

Ta evropski standard opredeljuje zahteve za rezalnike s posodo, ki se uporabljajo nepremični in postavljeni na tla ali na višino mize. Rezalniki s posodo so stroji za hrano, ki se uporabljajo za predelavo svežega ali zmrznjenega mesa, mesnih proizvodov, rib in zelenjave v vrtljivi posodi. To se opravi z vertikalnimi rezili, ki rotirajo okoli skoraj horizontalne osi. !Ta evropski standard obravnava velike nevarnosti, nevarne situacije in primere, ki se nanašajo na rezalnike z vrtljivo posodo, kadar se uporabljajo kot predvideno in pod pogoji napačne uporabe, ki jih razumno predvidi proizvajalec. Ta evropski standard obravnava nevarnosti, ki se lahko pojavijo med zagonom, delovanjem, čiščenjem, uporabo, vzdrževanjem in izločitvijo naprave iz uporabe. Ta standard velja za samo opremo, ki je bila izdelana po datumu izdaje tega standarda. Ta standard zajema naslednje tipe rezalnikov s posodo glede na premer (D) ali volumen (V) posode: tip 1 - rezalniki s posodo D < 700 mm ali 2 l ≤ V ≤ 30 l; tip 2 - rezalniki s posodo 700 mm < D < 1 200 mm ali 30 l < V ≤ 120 l; tip 3 - rezalniki s posodo D > 1 200 mm ali V > 120 l. Za tip 2 in tip 3 rezalnikov s posodo so v tem standardu zajete tudi naprave za polnjenje. Rezalniki s posodo so sestavljeni, na primer, iz ogrodja stroja, posode, garniture rezil, osi rezila, pokrova za rezilo, pokrova proti hrupu, naprave za polnjenje in odstranjevanje, pripadajočega pogona in električnih, hidravličnih in pnevmatičnih sestavnih delov, ter tudi sestavnih delov za zaplinjevanje, vakumiranje, segrevanje in hlajenje glede na tip stroja.

General Information

• Status: Published
• Publication Date: 19-Sep-2010
• ICS: 67.260 - Plants and equipment for the food industry
• Technical Committee: VSN - Safety of machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 02-Jul-2010
• Due Date: 06-Sep-2010
• Completion Date: 20-Sep-2010
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 98/37/EC - Machinery
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN 12855:2003+A1:2010 - Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements

Relations

• Replaces: SIST EN 12855:2004 - Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements
• Effective Date: 01-Oct-2010
• Consolidates: SIST EN 12855:2004 - Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements
• Effective Date: 18-Jan-2023
• Consolidates: SIST EN 12855:2004 - Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements
• Effective Date: 19-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Kutter mit umlaufender Schüssel - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Cutters à cuve tournante - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Rotating bowl cutters - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 12855:2003+A1:2010SIST EN 12855:2004+A1:2010en,fr,de01-oktober-2010SIST EN 12855:2004+A1:2010SLOVENSKI
STANDARDSIST EN 12855:20041DGRPHãþD



SIST EN 12855:2004+A1:2010



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12855:2003+A1
June 2010 ICS 67.260 Supersedes EN 12855:2003English Version
Food processing machinery - Rotating bowl cutters - Safety and hygiene requirements
Machines pour les produits alimentaires - Cutters à cuve tournante - Prescriptions relatives à la sécurité et à l'hygiène
Nahrungsmittelmaschinen - Kutter mit umlaufender Schüssel - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 2 July 2003 and includes Amendment 1 approved by CEN on 30 April 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 12855:2003+A1:2010: ESIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 2 Contents page Foreword . 3Introduction . 41Scope . 52Normative references . 73Terms and definitions . 84List of hazards . 94.1General . 94.2Mechanical hazards . 94.3Electrical hazards . 114.4Hydraulic hazards . 114.5Hazard from loss of stability . 114.6Noise hazard . 114.7Hazard from use of gases (N2, CO2 and steam) . 114.8Hazards from non-compliance with ergonomic principles . 114.9Hazards from non-compliance with hygiene principles . 115Safety requirements and/or measures . 125.1General . 125.2Mechanical hazards . 125.3Electrical Hazards . 185.4Hydraulic and pneumatic hazards . 215.5Hazard from loss of stability . 215.6Noise reduction . 215.7Hazard from use of gases (N2, CO2 and steam) . 215.8Ergonomic requirements . 225.9Hygiene and cleaning . 226Verification of safety requirements and/or safety measures . 247Information for use . 257.1General . 257.2Operating instructions . 257.3Training of operators . 278Marking . 27Annex A (normative)
Common hazards for food processing machines and reduction requirements applicable to rotating bowl cutters . 29Annex B (normative)
Noise test code for rotating bowl cutters (grade 2) . 31Annex C (normative)
Design principles to ensure cleanability of rotating bowl cutters . 33Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 39Bibliography . 40 SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 3 Foreword This document (EN 12855:2003+A1:2010) has been prepared by Technical Committee CEN/TC 153 “Food processing machinery - Safety and hygiene specifications”, the secretariat of which is held by DIN. 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 2010-04-30. This document supersedes EN 12855:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags!"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. It is one of a series of standards which have been prepared for machines and equipment for meat processing in accordance with EN 1672-2. !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 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 4 Introduction This standard covers rotating bowl cutters with optional loading and unloading devices. !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." SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 5 1 Scope 1.1 This European Standard specifies requirements for bowl cutters (see figure 1) used when stationary and positioned on the floor or at table height. Bowl cutters are food machines used to process fresh or frozen meat, meat products, fish and vegetables in a rotating bowl. This is performed by means of vertical blades rotating around a nearly horizontal axis. !This European Standard deals with all significant hazards, hazardous situations and events relevant to rotating bowl cutters, 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." This standard does not apply to household bowl cutters. 1.2 This standard only applies to machines which are manufactured after the date of issue of this standard. 1.3 This standard covers the following types of bowl cutters according to the diameter (D) or the volume (V) of the bowl:  Type 1 bowl cutters
D
< 700 mm or 2 l ≤ V ≤ 30 l  Type 2 bowl cutters
700 mm < D < 1 200 mm or 30 l < V ≤ 120 l
 Type 3 bowl cutters
D > 1 200 mm or V > 120 l For type 2 and type 3 bowl cutters, loading devices are also covered in this standard. Bowl cutters are constructed, for example, from a machine frame, a bowl, a set of cutting blades, a blade shaft, a blade cover, a noise cover, a loading and removal device, an associated drive and electrical, hydraulic and pneumatic components and also components for fumigating, vacuuming, heating and cooling according to machine type. NOTE In preparing this standard it was assumed that the machine would be operated by trained personnel. SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 6
Key 1 2 3 4 5 noise cover blade cover unloading device mushroom bowl 6 7 8 9 10 control elements fixed safety hand device machine frame loading device transport trolley is not part of the rotating bowl cutter covered by this standard Figure 1 — Elements of a bowl cutter, accessories The fresh or deep-frozen material is fed manually or by means of a loading device into the bowl of the bowl cutter. On account of the rotation of the cutter bowl at different speeds of the blade shaft, the material is mixed with additives, size reduced or emulsified. This can also take place under vacuum, or when liquid nitrogen or carbon dioxide or steam is added, or when boiling takes place at the same time.
Bowl cutters do not operate in a continuous mode. SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (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 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 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics 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 1037, Safety of machinery — Prevention of unexpected start-up 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 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN ISO 3744, 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 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 and specifications EN ISO 13849-1:2008, Safety of machinery — Safety related parts of control systems — Part 1: General principles for design EN ISO 13850, Safety of machinery — Emergency stop equipment — Principles for design
(ISO 13850:2006) SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 8 EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by the upper and lower 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, EN 1672-2:2005 and the following apply." 3.1 unloading device comprises a swivel arm with a rotating disc for emptying the bowl 3.2 container a unit for holding ingredients to be processed and the product 3.3 loading device a lift-tilt device for raising and tilting transport trolleys and containers 3.4 locking device a device for fixing the transport trolley or container in the load bearing device 3.5 transport trolley a travelling device for holding ingredients to be processed and products 3.6 fixed hand safety device rigid strips integrated into the blade cover, which together with the mushroom cover the cutting set 3.7 noise cover equipment for covering the part of the bowl, which is not covered by the blade cover, intended to decrease the noise emitted by the cutting set 3.8 machine frame the structure on which the machine parts are mounted 3.9 blade generally sickle-shaped and convex sharpened cutting inserts adapted to the bowl profile 3.10 cutting set combination of blades which can be mounted on the blade shaft 3.11 blade cover movable cover over the
cutting set and a portion of the bowl 3.12 blade shaft drive shaft for the cutting set SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 9 3.13 mushroom formation of the centre of the bowl, giving support for the blade cover and keeping the product travelling through the rotating blades
3.14 bowl container for ingredients or cut product 3.15 bowl volume volume of the bowl expressed in litres, (measured when filled with water to the maximum fill level) 3.16 vacuum boiling lid cover, required for production of certain products. It can replace the noise cover 4 List of hazards 4.1 General This clause and annex A contain the hazards and hazardous situations 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 rotating bowl cutter to check that it has the hazards identified in this clause. 4.2 Mechanical hazards
(See figure 2)  Zone 1  Rotating blades under blade cover;  Cutting or severing hazards to fingers or hand;  Zone 2  Zone between bowl and machine frame;  Drawing-in hazards to fingers or hand;  Zone 3  Area of movement of loading device;  Crushing or shearing hazards to limbs or body;  Zone 4  Area of movement of blade cover and/or noise cover and/or vacuum lid;  Crushing hazard to fingers or hands;  Zone 5  Area of drive systems;  Severing or drawing-in hazard to upper limbs;  Zone 6  Ejection of blades in the event of breakage; SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 10  Cutting or penetration hazards to body;  Zone 7  Area of unloading device;  Crushing hazard to fingers or hands;  Zone 8  Cleaning and maintenance of blades;  Cutting or severing hazards to fingers or hands.
Key 1 2 3 4 zone 1 zone 2 zone 3 zone 4 5 6 7 8 zone 5 zone 6 zone 7 zone 8 Figure 2 — Danger areas of bowl cutters SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 11 4.3 Electrical hazards 4.3.1 Direct or indirect contact with live parts Hazard of electric shock to the body, including the result of a malfunction. 4.3.2 Electrical components with insufficient safety level Hazard of mechanical injury to the body, including the result of a malfunction. 4.4 Hydraulic hazards Hazard to operator from ejection of high-pressure liquid. 4.5 Hazard from loss of stability Impact or crushing hazard to the body, if machine or loading device topples over. 4.6 Noise hazard Rotating bowl cutters may generate noise which can result in hearing damage, and in accidents due to interference with speech communication and in interference with the perception of acoustic signals. 4.7 Hazard from use of gases (N2, CO2 and steam) Leakage of gases such as carbon dioxide (CO2), nitrogen (N2) or steam:
 Hazard of suffocation;  Hazard of burns, frostbite or scalding. 4.8 Hazards from non-compliance with ergonomic principles  Unhealthy posture or excessive physical effort;  Inadequate consideration of the human anatomy of hand/arm or foot/leg during machine design;  Hazard of physical damage to body. 4.9 Hazards from non-compliance with hygiene principles  Microbial causes:  Hazard from foodstuff spoilage;  Hazard of damage to health of the consumer through food poisoning;  Hazard of infection of operator.  Chemical causes:  Hazard (contamination) of foodstuff through residues of cleaning and disinfecting agents and hydraulic fluid;  Hazard of damage to health of the consumer;
 Hazard of toxic or allergic reactions from operator; SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 12  Physical causes: Physical contamination of the product by objects originating from raw materials, machine parts or other sources. 5 Safety requirements and/or measures 5.1 General Machinery shall comply with the safety requirements and/or protective measures of this clause and of annex C. 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 a B-level standard such as !EN ISO 13857",
EN 953, EN 1672-2, EN 60204-1, etc. the manufacturer shall carry out a risk assessment to establish the requirements of the B-standard which are to be applied. 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 for use details of the system and of the elements of training required by the operating personnel. 5.2
Mechanical hazards 5.2.1 Zone 1 Rotating blades under protective cover !The danger zone of rotating blades shall be protected with an interlocked guard according to EN 1088:1995, 4.2.1. If the rotating blades do not stop within the time specified below, the interlocking device shall be provided also with a guard locking, according to EN 1088:1995, 4.2.2. The safety related control system for the interlocking of the blade cover shall present at least a performance level “c” in accordance with of EN ISO 13849-1:2008, or performance level “e” if electronic components are used." For type 1 bowl cutters  the rotating blade shall come to a standstill as soon as possible, but the time taken shall not exceed 2 s after the front edge of the blade cover has been lifted more than 50 mm. This applies when the bowl is empty; For type 2 bowl cutters  the blade shaft shall come to a standstill as soon as possible, but the time taken shall not exceed 3 s after the front edge of the blade cover has been lifted by more than 50 mm. This applies when the bowl is empty; For type 3 bowl cutters  the blade shaft shall come to a standstill as soon as possible, but the time taken shall not exceed 4 s after the front edge of the blade cover has been lifted by more than 100 mm. This applies when the bowl is empty; For type 1 bowl cutters (see figure 3)
 the depth of the cover shall not be less than 70 % of the bowl’s external diameter D. An open section of max. 90° is allowed on the operating side; SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 13
Figure 3 — Example of design of type 1 bowl cutters
For type 2 bowl cutters (see figure 4)  the depth of the cover shall not be less than 55 % of the bowl’s external diameter D;  over the right side of the bowl (“inlet side”) the blade cover shall protrude 20 % of the bowl diameter towards the front of the cutter, measured from the centreline. The 20 % shall be achieved in the centreline of the inlet side. The shape of the additional protruding blade cover can be triangle, circular or similar; SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 14
Figure 4 — Example of design of type 2 bowl cutters
For type 1 and type 2 bowl cutters (see figure 5b)  fixed hand safety devices shall be provided. The width of the mushroom and the fixed hand safety devices shall be more than one and a half times the maximum width of the cutting set on each side of the centreline of the bowl;  the distance from right side of hand safety device to the nearest possible blade position shall be not less than 50 mm;  hand safety device shall be provided even if the width of the mushroom fulfils the above
requirements;  the minimum height of the fixed hand safety devices shall be 40 % of the bowl depth.
SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 15
Key 1 Non return flap 2 View Y A
<
0,33 · T H
> 0,4 · T B
is the width of cutting set; H is the height of the hand safety device; P
is the diameter of mushroom; T
is the depth of the bowl. a) Example of design of type 2 cutters b)
Example of design of hand safety device for type 1 and 2 bowl cuttersFigure 5 — Examples of bowl cutters For type 2 and 3 bowl cutters  a non-return flap is required to be mounted on the outlet side. See figure 5 for non-return flap on type 2 machines. The flap shall not be removable from the machine without tools. It shall protrude at least 0,4 times the depth of the bowl (T) into the bowl. The distance to the bowl at the sides of the flap shall not be more than
20 mm; For type 3 bowl cutters (see figure 6)  a safety distance (L) of not less than 850 mm to the blades shall be provided;  if the safety distance (L) is less than 1 200 mm a hand safety device shall be provided. The device shall be located in front of the cutting set on both sides of the mushroom. The distance from either side of the hand safety device to the nearest possible blade position shall be not less than 50 mm. The height of the device shall be more than 0,4 times the depth of the bowl (T). SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 16
Key L
≥
850
mm 850 mm ≤ L < 1200 mm: Hand safety device is required.
D
≥
1200
mm Figure 6 — Example of design of type 3 bowl cutters 5.2.2 Zone 2 Area between bowl and machine frame The rotating bowl shall avoid forming any drawing-in points with fixed machine components. If this is not possible, the access to the danger zone shall be prevented by a fixed guard, movable guard with interlocking according to EN 1088, or other protective device with equal safety. !Fixing systems of fixed guards shall remain attached to these guards or to the machine when the guards are removed." 5.2.3 Zone 3 Area of movement of loading device 5.2.3.1 Loading device Loading devices shall comply with the requirements of !EN ISO 12100-2:2003, 4.14". There are lift-tilt devices of various designs, for example, with  fixed lifting arms for holding the trolley;  lifting arms which allow the transport trolley to swivel in a gondola and remain horizontal; SIST EN 12855:2004+A1:2010



EN 12855:2003+A1:2010 (E) 17  a vertical mast-type lift-tilt device with forks for holding transport trolleys or containers. Lift-tilt devices can be free standing or connected to the bowl cutters. Lift-tilt devices shall be designed to be stable and conform to the requirements set out in 5.4. If the device meets an obstruction the bowl cutter shall not roll, slip or tip over. This can be achieved by slip clutches or a motor overload cut-out to automatically stop the descent. 5.2.3.2 Load bearing device Load bearing devices shall be constructed to prevent transport trolleys or containers falling off (e.g. by providing a locking device). The distance between the load bearing device and the machine base shall be > 120 mm. During the tilting operation the minimum distance to the surface of the machine shall be > 25 mm. 5.2.3.3 Lowering speed of load bearing device The lowering velocity shall be ≤ 0,2 m/s when it is controlled by a hold-to-run control. The lowering velocity shall be ≤ 0,1 m/s when the lowering motion is controlled automatically or without a hold-to-run control. In this case, the last 0,5 m before the trolley or container touches the floor shall be controlled by a hold-to-run control. 5.2.4 Zone 4 Area of movement of blade cover and noise cover 5.2.4.1 Manual operation The force required to raise or lower the cover shall not exceed 250 N. Movable machine components (e.g. covers) shall be prevented from slamming shut. This shall be achieved for example by the following measures: On non-powered covers a counterweight or a spring shall be provided if, when open, the cover does not swing back to a stable position behind its top dead centre. The cover shall be provided with a grab handle. 5.2.4.2 Powered operation The control unit for lowering the cover shall be designed as a hold-to-run control. In the event of a drive failure (e.g. pipe or hose break), means shall be provided to prevent uncontrolled movement of the cover. Lowering of the cover shall be carried out so that when the distance measured from the front edge of the bowl is smaller than 200 mm, the lowering speed shall no
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