SIST EN 12041:2015
(Main)Food processing machinery - Moulders - Safety and hygiene requirements
Food processing machinery - Moulders - Safety and hygiene requirements
This standard applies to the design and manufacture of moulders of the types described from 3.1 to 3.3 and illustrated in Figure 1 to Figure 3.
These moulders are used in shops bakery, pizzeria, pastry and confectionary industry for flattening, rolling and elongating pieces of dough.
Designs of moulder other than those described from 3.1 to 3.3 are not covered by this standard.
This European Standard deals with all significant hazards, hazardous situations and events relevant to moulders, when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer. It deals with the hazards due to the use, the maintenance and the cleaning.
This European standard does not deal with :
- experimental and testing machines under development by the manufacturer;
- flouring device;
- domestics appliances;
- bagel machines;
- dough and pastry brakes (see EN 1674).
This document is not applicable to machines which are manufactured before its date of publication as a European standard.
Nahrungsmittelmaschinen - Langwirkmaschinen - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm gilt für die Gestaltung/Konstruktion und Herstellung von Langwirkmaschinen der in 3.1 bis 3.3 beschriebenen und in den Bildern 1 bis 3 gezeigten Typen.
Diese Langwirkmaschinen werden in Backshops, Pizzerien, Konditoreien und Konfisserien zum Ebnen, Auswalzen und Längen von Teigstücken verwendet.
Andere als in 3.1 bis 3.3 beschriebene Konstruktionen von Langwirkmaschinen werden nicht in dieser Norm behandelt.
Diese Europäische Norm behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefähr-dungsereignisse, die auf Langwirkmaschinen zutreffen, wenn sie bestimmungsgemäß und unter Bedingungen von durch den Hersteller vernünftigerweise vorhersehbaren Fehlanwendungen verwendet werden. Sie behandelt die Gefährdungen, die durch die Anwendung, die Wartung und die Reinigung entstehen (siehe Abschnitt 4).
1.2 Diese Europäische Norm behandelt keine:
- Versuchs- und Prüfmaschinen, die in Entwicklung beim Hersteller sind;
- Bemehlungsanlagen;
- Haushaltsgeräte;
- Teigausrollmaschinen (siehe EN 1674).
1.3 Dieses Dokument gilt nicht für Maschinen, die vor dem Datum seiner Veröffentlichung als Europäische Norm hergestellt wurden.
Machines pour les produits alimentaires - Façonneuses - Prescriptions relatives à la sécurité et à l'hygiène
1.1 La présente norme s'applique à la conception et à la fabrication des façonneuses dont les types sont décrits aux paragraphes 3.1à 3.3 et illustrés par les Figures 1 à 3.
Ces façonneuses sont utilisées dans les commerces de l'alimentation comme la boulangerie, les pizzérias, la confection des pâtes alimentaires pour laminer, rouler et allonger les pâtons.
Les conceptions de façonneuses autres que celles décrites de 3.1 à 3.3 ne sont pas couvertes par la présente norme.
La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements dangereux significatifs des façonneuses lorsqu’elles sont utilisées normalement et dans des conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant. Elle traite des phénomènes dangereux engendrés par l’utilisation, la maintenance et le nettoyage (voir Article 4).
1.2 La présente Norme européenne ne traite pas :
- des machines expérimentales ou d'essais en cours de mise au point par le constructeur ;
- du dispositif de fleurage ;
- des appareils à usage domestique ;
- des façonneuses pour bägel ;
- des Laminoirs à pâte (voir EN 1674).
1.3 Le présent document ne s'applique pas aux machines fabriquées avant sa date de publication sous forme de norme européenne.
Stroji za predelavo hrane - Stroji za vzdolžno oblikovanje testa - Varnostne in higienske zahteve
Ta standard velja za načrtovanje in izdelavo strojev za vzdolžno oblikovanje testa tipov, ki so opisani od točke 3.1 do 3.3 in prikazani na slikah 1–3.
Ti stroji za vzdolžno oblikovanje testa se uporabljajo v trgovinah, pekarnah, picerijah, pri izdelavi testa in v industriji slaščic za sploščevanje, valjanje in podaljševanje kosov testa.
Oblike strojev za vzdolžno oblikovanje testa, ki niso opisane od točke 3.1 do 3.3, niso zajete v tem standardu.
Ta evropski standard opisuje vsa večja tveganja, nevarne situacije in nevarne dogodke v zvezi s stroji za vzdolžno oblikovanje testa, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določa proizvajalec. Obravnava nevarnosti zaradi uporabe, vzdrževanja in čiščenja.
Ta evropski standard ne obravnava:
– poskusnih in preskusnih strojev, ki jih razvija proizvajalec;
– naprav za posipanje z moko;
– gospodinjskih aparatov;
– strojev za izdelavo krofov »bagel«;
– testa in strojev za valjanje testa (glej EN 1674).
Ta dokument se ne uporablja za stroje, ki so bili izdelani pred datumom objave dokumenta kot evropskega standarda.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stroji za predelavo hrane - Stroji za vzdolžno oblikovanje testa - Varnostne in higienske zahteveNahrungsmittelmaschinen - Langwirkmaschinen - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Façonneuses - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Moulders - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 12041:2014SIST EN 12041:2015en,fr,de01-februar-2015SIST EN 12041:2015SLOVENSKI
STANDARDSIST EN 12041:2001+A1:20091DGRPHãþD
SIST EN 12041:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12041
November 2014 ICS 67.260 Supersedes EN 12041:2000+A1:2009English Version
Food processing machinery - Moulders - Safety and hygiene requirements
Machines pour les produits alimentaires - Façonneuses - Prescriptions relatives à la sécurité et à l'hygiène
Nahrungsmittelmaschinen - Langwirkmaschinen - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 13 September 2014.
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-CENELEC 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-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12041:2014 ESIST EN 12041:2015
EN 12041:2014 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Term, definition and description .7 3.1 Terms and definitions .7 3.2 Description .8 3.2.1 General .8 3.2.2 Type 1: Moulder with manual feeding by gravity .8 3.2.3 Type 2: Compact moulder without elongating system and with feeding by belt .9 3.2.4 Type 3: Moulder with elongating system and with feeding by belt . 10 4 List of significant hazards . 10 5 Safety and hygiene requirements and/or measures . 13 5.1 General . 13 5.2 Mechanical hazards . 13 5.2.1 General . 13 5.2.2 Zone 1: Feeding area . 14 5.2.3 Zone 2 – Drive mechanism . 19 5.2.4 Zone 3 – Input and output devices (hazardous inrunning nips) . 19 5.2.5 Flour duster . 20 5.2.6 Loss of stability . 20 5.3 Electrical hazards . 20 5.3.1 General . 20 5.3.2 Safety requirements related to electromagnetic phenomena . 21 5.3.3 Protection against electric shock . 21 5.3.4 Power circuits . 21 5.3.5 Protection against earth faults in control circuits . 21 5.4 Motor enclosures . 21 5.5 Emergency stop . 21 5.6 Noise reduction . 21 5.7 Protection against dust emission . 21 5.8 Hygiene requirements . 22 5.9 Ergonomic principles . 24 6 Verification of safety and hygiene requirements and/or measures . 24 7 Information for use . 25 7.1 General . 25 7.2 Signals and warning . 25 7.3 Instruction handbook . 26 7.4 Marking . 27 Annex A (normative)
Noise test code – Grade 2 of accuracy . 29 A.1 Installation and mounting conditions . 29 A.2 Operating conditions . 29 A.3 Emission sound pressure level determination . 29 SIST EN 12041:2015
EN 12041:2014 (E) 3 A.4 Measurement uncertainties . 29 A.5 Information to be recorded . 30 A.6 Information to be reported . 30 A.7 Declaration and verification of noise emission values . 30 Annex B (normative)
Principles of design to ensure the cleanability of moulders . 32 B.1 Definitions . 32 B.2 Materials of construction . 32 B.3 Design . 33 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 50 Bibliography . 51
SIST EN 12041:2015
EN 12041:2014 (E) 4 Foreword This document (EN 12041:2014) has been prepared by Technical Committee CEN/TC 153 “Machinery intended for use with foodstuffs and feed”, 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 May 2015 and conflicting national standards shall be withdrawn at the latest by May 2015. 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 supersedes EN 12041:2000+A1:2009. This document has been prepared under a Mandate given to CEN by the Commission of 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 standard. Significant changes: The significant changes with respect to the previous edition EN 12041:2000+A1:2009 are listed below: — normative references updated; — addition of 3 new definitions: flattening, rolling and elongating; — more detailed and clearer description of the moulders Type 2 and Type 3; — increase of the safety distances; — clauses/subclauses technically updated: 5.2.2 (zone 1 – feeding area), 5.2.4 (zone 4 – input and output devices), 5.3.2 (electromagnetic phenomena), 5.9 (ergonomic principles), Clause 6 (verifications), Clause 7 (information for use), Annex A (noise test code) and Annex B (principles of design); — new subclauses: 5.2.5 (flour duster), 5.7 (protection against dust emission) and 7.1 (signals and warning); — addition of the emergency stop: 5.5. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12041:2015
EN 12041:2014 (E) 5 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 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. SIST EN 12041:2015
EN 12041:2014 (E) 6 1 Scope 1.1 This European Standard applies to the design and manufacture of moulders of the types described from 3.2.1 to 3.2.4 and illustrated in Figure 1 to Figure 3. These moulders are used separately or in a line in the food industry and shops (pastry-making, bakeries, confectionery, etc.) for flattening, rolling and, but not necessarily, elongating pieces of dough. These machines can be fed by hand or mechanically. This document deals with all significant hazards, hazardous situations and events relevant to the transport, installation, adjustment, operation, cleaning, maintenance, dismantling, disassembling and scrapping of moulders, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). 1.2 This European Standard does not deal with: — designs of moulder other than those described from 3.2.1 to 3.2.4; — experimental and testing machines under development by the manufacturer; — domestics appliances; — bagel machines; — additional hazards generated when the machine is used in a line; — dough and pastry brakes (see EN 1674). 1.3 This document is not applicable to machines which are manufactured before its date of publication as a European standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 614-1:2006+A1:2009, Safety of machinery
Ergonomic design principles
Part 1: Terminology and general principles EN 619:2002+A1:2010, Continuous handling equipment and systems
Safety and EMC requirements for equipment for mechanical handling of unit loads EN 894-4:2010, Safety of machinery
Ergonomics requirements for the design of displays and control actuators
Part 4: Location and arrangement of displays and control actuators EN 1672-2:2005+A1:2009, 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) SIST EN 12041:2015
EN 12041:2014 (E) 7 EN 61000-6-1, Electromagnetic compatibility (EMC)
Part 6-1: Generic standards
Immunity for residential, commercial and light-industrial environments (IEC 61000-6-1) EN 61310-1, Safety of machinery
Indication, marking and actuation
Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1) EN ISO 3744:2010, Acoustics
Determination of sound power levels and sound energy levels of noise sources using sound pressure
Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010) EN ISO 4287, Geometrical product specifications (GPS)
Surface texture: Profile method
Terms, definitions and surface texture parameters (ISO 4287) EN ISO 4871:2009, Acoustics
Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11201:2010, Acoustics
Noise emitted by machinery and equipment
Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 11201:2010) EN ISO 12100:2010, Safety of machinery
General principles for design
Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13849-1, Safety of machinery
Safety-related parts of control systems Part 1: General principles for design (ISO 13849-1) EN ISO 13850, Safety of machinery
Emergency stop
Principles for design (ISO 13850) EN ISO 13857:2008, Safety of machinery Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) EN ISO 14119:2013, Safety of machinery
Interlocking devices associated with guards
Principles for design and selection (ISO 14119:2013) 3 Term, definition and description 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the following apply. 3.1.1 flattening transformation of the lump of dough into a flat piece, the shape of which depends on the form of the lump; for instance a pre-rounded lump can be transformed into a round or oval shape disc 3.1.2 rolling transformation of the flattened dough lump into a short cylindrical shape 3.1.3 elongating transformation of a short cylindrical shape of dough into a long cylindrical shape SIST EN 12041:2015
EN 12041:2014 (E) 8 3.2 Description 3.2.1 General Machines may be manually or automatically fed (for example by discharge conveyor from the intermediate prover, see Figure 1). Dough pieces are flattened between at least two cylinders (2), rolled between at least two surfaces (e.g. two moving belts, or one belt and a fixed plate, or one belt and a fixed band) (3), and, but not necessarily, elongated (4) in the same way (see Figure 1). Discharge may be manual or by conveyor. The machine can be equipped with a flour duster.
Key 1 feeding (by belt) 2 flattening 3 rolling 4 elongating 5 discharge Figure 1 — General principle 3.2.2 Type 1: Moulder with manual feeding by gravity These machines are used mainly to produce long bread with soft dough (e.g. French baguette) (see Figure 2 and Figure 4). NOTE Product quality depends on careful handling of the dough and in particular on manual introduction of the dough without any excessive drop. SIST EN 12041:2015
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Key 1 feeding 2 flattening 3 feed chute Figure 2 — Feeding by gravity 3.2.3 Type 2: Compact moulder without elongating system and with feeding by belt These machines without a specific elongating action are used mainly to produce rolled bread with soft or hard dough. The piece of dough is manually placed on the inlet conveyor belt (see Figure 2 and Figure 11) or can pass onto it by gravity, transfer, etc., from other machines (conveyor belts, intermediate provers, etc.), at different angles from the axes of cylinders in order to obtain several shapes of bread (e.g. banana, mantovane, barillini, bocconcini, etc.). NOTE The flattened piece of dough is rolled by two counter-rotating belts, which are placed one over the other, divergent towards the outlet and with different linear speeds. When the rolled piece of dough comes out from the above said rolling belts, it passes to a rigid plate, which can be under the infeed belt or at the opposite side or at both sides (see the example shown in Figure 11), or to a conveyor belt (like the “discharge belt” (5) in Figure 1), different from the belts which carry out the dough rolling action. SIST EN 12041:2015
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Key 1 feeding 2 flattening Figure 3 — Feeding by belt 3.2.4 Type 3: Moulder with elongating system and with feeding by belt These machines are mainly suitable for producing large rolled bread (long loaves) laminating, rolling and elongating pieces of (usually) soft dough. The piece of dough is placed on the inlet conveyor belt (see Figure 3 and Figure 6) manually or can pass onto it by gravity, transfer etc. from other machines (conveyor belts, intermediate provers, etc.). The machine can be equipped also with two bars between which the rolled dough pass during the elongation phase for limiting the length of the long loaves and flattening their ends (e.g. long loaves for tin bread). The product outlet can be as described for the type-2 moulder; it can also fall by gravity in a special container (e.g. long loaves for tin bread). 4 List of significant hazards This clause contains all the significant hazards, hazardous situations and events, identified by risk assessment as significant for this type of machinery and which require measures to eliminate or reduce the risk associated with the identified hazards (see Table 1). Figures 4, 5 and 6 show the danger zones. SIST EN 12041:2015
EN 12041:2014 (E) 11 Table 1 –List of significant hazards Hazards, hazardous situations and hazardous events Location or cause Clause/subclause in this European Standard Mechanical hazards (see Figures 4, 5 and 6) 5.2 — drawing-in and crushing Zone 1 – Feeding area (hazardous inrunning nips) — trapping, shearing and entanglement Zone 2 – Drive mechanism — drawing-in and crushing Zone 3 – Input and output devices (hazardous inrunning nips) Electrical hazards Electric shock from direct or indirect contact with live components Electromagnetic disturbance External influences on electrical equipment (e.g. cleaning with water) 5.3 5.3 5.4 Stopping of the machine No access to the normal OFF of the machine 5.5 Hazards generated by noise Hearing damage, accidents due to interference with speech communication and interference with the perception of acoustic signals 5.6 7.2 Hazards generated by materials and substances (inhalation of dust) Flour dusters 5.7 Hazards generated by neglecting hygienic design principles e.g. contamination by microbial growth or foreign materials 5.8 Hazards generated by neglecting ergonomic principles During operation, cleaning and maintenance 5.9 SIST EN 12041:2015
EN 12041:2014 (E) 12
Key 1 zone 1 – feeding area 2 zone 2 – drive mechanism Figure 4 — Danger zones of type 1 moulders
Key 1 zone 1 – feeding area 2 zone 2 – drive mechanism 3 zone 3 – input and output devices Figure 5 — Danger zones of a type 2 moulder SIST EN 12041:2015
EN 12041:2014 (E) 13
Key 1 zone 1 – feeding area 2 zone 2 – drive mechanism 3 zone 3 – input and output devices Figure 6 — Danger zones of a type 3 moulder 5 Safety and hygiene 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 relevant but not significant hazards, which are not dealt with by this document. 5.2 Mechanical hazards 5.2.1 General Where reference is made to interlocking devices throughout Clause 5, they can be interlocked without guard locking and shall comply with EN ISO 14119:2013, Clauses 5, 7 and 8. Where the interlocking mechanism has movable parts, e.g. position switches, these shall be protected from contamination with dough or dry ingredients, e.g. by mounting them within the machine body. The safety-related parts of the control system shall present at least a performance level “c” defined in accordance with EN ISO 13849-1. When fixed guards, or parts of the machine acting as such, are not permanently fixed e.g. by welding, their fixing systems shall remain attached to the guards or to the machinery when the guards are removed. The stopping time of the machine, when protective devices (e.g. interlocking guards, trip device) are actuated, shall be less than or equal to 1 s from their actuation. Restarting shall only be possible by actuating the starting control. SIST EN 12041:2015
EN 12041:2014 (E) 14 5.2.2 Zone 1: Feeding area 5.2.2.1 General Access to the hazard zone (gap between the rollers) shall be prevented. Moulders shall be equipped with an interlocking guard and/or a device preventing the introduction of the hand into the danger zone through the feeding devices (see 5.2.2.2 and 5.2.2.3). The surface of the rollers shall be smooth and without groove or crevice, except for the Type 3 moulder. 5.2.2.2 Type 1: manual feeding by gravity Restricting access to zone 1 shall be achieved by means of one of the following devices: — a mechanical device with dimensions according to Figure 7; — a feed chute which acts as a tripping device (see Figure 8); — a feed chute with a tripping device (e.g. a pressure sensitive bar, a pressure sensitive edge) at the top of the hopper (see Figure 9). The upper edge of the feed chute shall be at a minimum distance of 230 mm of the hazard zone (see Figure 8 and Figure 9). The distance between the upper edge of the feed chute and the trip device shall be less than 20 mm (see Figure 8 and Figure 9). The trip device shall be actuated between the resting position and the upper edge of the feed chute (see Figure 8 and Figure 9). The width of the upper opening of the feed chute shall be less than or equal to 160 mm. The distance between the upper edge of the feed chute and the floor shall be more than or equal to 1 400 mm. For machines that are too small to be placed directly on the floor (e.g. machines standing on a table), this requirement shall be specified in the instruction handbook (see 7.3). SIST EN 12041:2015
EN 12041:2014 (E) 15
Figure 7 — Feed chute with mechanical device SIST EN 12041:2015
EN 12041:2014 (E) 16
Figure 8 — Feed chute which acts itself as a tripping device Figure 9 — Fixed feed chute with a pressure sensitive bar
5.2.2.3 Type 2: compact moulder without elongating system and with feeding by belt Access to the rollers shall be prevented. This may be achieved by the provision of: — a fixed feed guard (e.g. feed tunnel) on the conveyor, see EN ISO 13857:2008, Table 4; — an impeding device on the conveyors: a fixed or an interlocked feed chute/chicane with the dimensions given in Figure 10; — a movable interlocking guard acting as a trip device (see Figure 11). The guard shall comply with Table 2 and be free to move vertically or near vertically at the feed opening. Openings in the guard shall comply with EN ISO 13857:2008, Table 4, except for the feeding opening. SIST EN 12041:2015
EN 12041:2014 (E) 17
Key 1 belt 2 piece of dough 3 chicane Figure 10 — Feed chute with feed tunnel Table 2 — Dimensions of the interlocking guard for type 2 moulders Dimensions in millimetres A max. 70 75 80 85 90 95 100 105 110 B min. 250 270 290 310 330 350 370 390 410 C min. 100 E See EN ISO 13857:2008, Table 4. Where: A: distance between the belt and the front opening of the guard when the interlocking device actuates; B: the shortest distance between the edge of the guard and the vertical plane through the axis of the nearest roller; C: distance between the edge of the guard and the vertical plane through the axis of the front roller of the belt; E: distance between the lower edge of the guard and the conveyor belt. SIST EN 12041:2015
EN 12041:2014 (E) 18
Key 1 trip device Figure 11 — Type 2 moulders 5.2.2.4 Type 3: Moulder with elongating system and with feeding by belt Access to the rollers shall be prevented. This may be achieved by the provision of: — a fixed feed guard (e.g. feed tunnel) on the conveyor, see EN ISO 13857:2008, Table 4; — an impeding device on the conveyors: a fixed or an interlocked feed chute/chicane with the dimensions given in Figure 10; — a movable interlocking guard acting as a trip device (see Figure 12). The guard shall comply with Table 3 and be free to move vertically or near vertically at the feed opening. Openings in the guard shall comply with EN ISO 13857:2008, Table 4, except for the feeding opening. Table 3 — Dimensions of the interlocking guard for type 3 moulders Dimensions in millimetres A max. 40 45 50 55 60 65 70 105 140 B min. 230 250 300 350 400 450 500 550 600 E See EN ISO 13857:2008, Table 4. Where: A: distance between the table and the front opening of the guard when the interlocking device actuates; B: the shortest distance between the edge of the guard and the vertical plane through the axis of the nearest roller; E: distance between the lower edge of the guard and the conveyor belt. SIST EN 12041:2015
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Key 1 movable interlocking guard Figure 12 — Type 3 moulders 5.2.3 Zone 2 – Drive mechanism The drive mechanism shall be protected by a fixed or interlocking guard. 5.2.4 Zone 3 – Input and output devices (hazardous inrunning nips) If there is hazard with inrunning nips, nip points shall be safeguarded with fixed guards. An example is shown in Figure 13, they shall be safeguarded in accordance with EN 619:2002+A1:2010, 5.1.3.2. The distance between the belt and the fixed guard of the machine and between the roller and the guard shall be less than or equal to 4 mm. SIST EN 12041:2015
EN 12041:2014 (E) 20
Key a discharge belt b roller c inrunning nip Figure 13 — Inrunning nip on a discharge belt 5.2.5 Flour duster If there are mechanical risks, the flour containers shall be fitted with a fixed or interlocked guard with dimensions according to EN ISO 13857:2008, Table 4, acting on the flour feed system. If the stopping time of the flour duster is more than 1 s, the mo
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