SIST EN 12268:2015
(Main)Food processing machinery - Band saw machines - Safety and hygiene requirements
Food processing machinery - Band saw machines - Safety and hygiene requirements
This European Standard specifies requirements for the design and manufacturing of band saw machines. The machines covered by this European Standard are used to cut bone and meat. The band saw machines covered by this European Standard do not include band saw machines for processing wood and similar materials, and the requirements of EN 1807 do not apply.
Band saw machines for domestic use are not included in this European Standard.
This European Standard only applies to machines which are manufactured after the date of issue of this European Standard.
This European Standard covers the following types of machines:
- Band saw machines designed as table-top machines with and without base
- Band saw machines designed as floor-type machines
- Band saw machines integrated in a cutting line
Band saw machines which are placed on the floor can be wheel-mounted.
Nahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm legt Anforderungen an die Konstruktion und Herstellung von Bandsägemaschinen fest (siehe Bilder 1 bis 5). Die in dieser Europäischen Norm behandelten Maschinen werden zum Schneiden von Folgendem verwendet:
- Knochen; frischem oder tiefgefrorenem Fleisch mit oder ohne Knochen;
- frischem oder tiefgefrorenem Fisch, ganz oder filetiert;
- gefriergetrockneten Produkten;
- frischem oder tiefgefrorenem Gemüse;
- anderen Produkten, wie z. B. Schweinefett oder ähnliche Produkte. Die in dieser Europäischen Norm behandelten Bandsägemaschinen sind keine Bandsägemaschinen zum Bearbeiten von Holz und ähnlichen Materialien und die in EN 1807 beschriebenen Anforderungen gelten nicht. Das Material des Sägeblattes muss die Anforderungen an Materialien, die in Kontakt mit Lebensmittel kommen, erfüllen. Bandsägemaschinen für den Hausgebrauch werden von dieser Europäischen Norm nicht erfasst. Diese Europäische Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Europäischen Norm erstellt werden. Diese Europäische Norm umfasst folgende Bauarten von Maschinen: Bandsägemaschinen, die auf dem Fußboden aufgestellt werden und verfahrbar ausgeführt sind (siehe Bild 6). Typ A Bandsägemaschine mit Zuführtisch und fest angebrachtem Materialdrücker Tatsächliche Schnitthöhe SH < 250 mm Bandsägemaschinen, die als Tischaufsatzmaschinen mit und ohne Tisch gestaltet sind;
- Bandsägemaschinen, die als Bodenstandmaschinen gestaltet sind;
- Bandsägemaschinen, die in eine Schneidelinie eingefügt sind. Aufstellungsort: Tisch (siehe Bild 1) oder Untergestell (siehe Bild 2). Abstand A zwischen Fußboden und Oberfläche des Zuführtisches beträgt in der Regel zwischen 800 mm und 1 050 mm.
Typ B Bandsägemaschinen mit Zuführtisch, Schutzleiste und einer tatsächlichen Schnitthöhe von 250 mm ≤ SH < 420 mm. Abstand A zwischen Fußboden und Oberfläche des Zuführtisches beträgt zwischen 800 mm und 1 050 mm. Aufstellungsort: Fußboden (siehe Bild 3). Typ C Bandsägemaschine mit Schiebezuführtisch, Schutzleiste und einer tatsächlichen Schnitthöhe von 250 mm ≤ SH < 420 mm. Abstand A zwischen Fußboden und Oberfläche des Schiebezuführtisches beträgt zwischen 800 mm und 1 050 mm. Aufstellungsort: Fußboden (siehe Bild 4).
Typ D Bandsägemaschine mit Zu- und Abführeinrichtung (z. B. Rollenbahn, Transportband); eingebaut in eine Zerlegeanlage, tatsächliche Schnitthöhe SH < 550 mm. Abstand A zwischen Fußboden und Zuführfläche beträgt in der Regel zwischen 800 mm und 1 050 mm. Aufstellungsort: Fußboden (siehe Bild 5).
Bandsägemaschinen bestehen aus Maschinenständer, fest angebrachtem Zuführtisch oder Schiebezuführ-tisch, Rollenbahn oder Transportband, Materialdrücker, höhenverstellbarer Schutzleiste, Antriebs- und Umlenkscheibe, Sägeblatt, oberer und unterer Blattführung, Blattspanneinrichtung, Antrieb und elektrischen Komponenten, abhängig von der Maschinenart. Anforderungen an automatische Be-/Entladeeinrichtungen, Förderbänder usw. fallen nicht in den Anwendungsbereich dieser Europäischen Norm. Diese Europäische Norm behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefähr-dungsereignisse, die auf Bandsägemaschinen zutreffen, wenn sie bestimmungsgemäß und unter Bedingun-gen von durch den Hersteller vernünftigerweise vorhersehbaren Fehlanwendungen verwendet werden (siehe Abschnitt 4). Diese Europäische Norm behandelt die Gefährdungen, die während Installation, Betrieb, Reinigung, Nutzung, Wartung und Außerbetriebnahme der Maschine auftreten können. Bei Bodenbandsägemaschinen wird das Schneidgut von Hand auf den fest angebrachten Zuführtisch oder den Schiebezuführtisch aufgelegt und mit dem Materialdrücker oder der Tischrückwand des Schiebezuführ-tisches oder mit der Rollenbahn oder dem Transportband gegen die Schneidstelle des Sägeblattes gedrückt und durchgesägt.
Machines pour les produits alimentaires - Scies à ruban - Prescriptions relatives à la sécurité et à l'hygiéne
La présente Norme européenne spécifie les prescriptions relatives à la conception et à la fabrication des scies
à ruban (voir les Figures 1 à 5).
Les machines couvertes par la présente Norme européenne sont utilisées pour couper :
- des os ;
- de la viande fraîche ou surgelée avec ou sans os ;
- du poisson frais ou surgelé, naturel ou en filets ;
- des blocks de produits surgelés ;
- des légumes frais ou surgelés ;
- d’autres produits tels que lard ou autres produits similaires.
Les scies à ruban couvertes par la présente Norme européenne n’incluent pas les scies à ruban pour le
traitement du bois et autres matériels similaires, et les prescriptions de l’EN 1807 ne s'appliquent pas. Les
matériaux constitutifs des scies à ruban doivent répondre aux prescriptions des matériaux destinés au contact
alimentaire.
Les scies à ruban à usage domestique ne sont pas couvertes par la présente Norme européenne.
La présente Norme européenne s'applique uniquement aux machines fabriquées après sa date de publication.
La présente Norme européenne couvre les types de machines suivants :
Les scies à ruban qui sont posées au sol et qui peuvent être équipées de roulettes (voir Figure 6).
- Type A
Scie à ruban avec une table d'alimentation et un poussoir fixe.
Hauteur de coupe réelle SH < 250 mm
- Les scies à ruban conçues pour être posées sur une table, avec ou sans socle
- Les scies à ruban conçues pour être posées au sol
- Les scies à ruban intégrées dans une ligne de coupe
Emplacement : Sur une table (voir Figure 1) ou sur un socle (voir Figure 2). La distance A entre le sol et la
face supérieure de la table d'alimentation est comprise entre 800 mm et 1050 mm.
- Type B
Scie à ruban ayant une table d'alimentation, un rail protecteur et une hauteur réelle de coupe SH telle que 250
mm SH < 420 mm.
La distance A entre le sol et la face supérieure de la table d'alimentation est comprise entre 800 mm et
1050 mm. Emplacement : sur le sol (voir Figure 3).
- Type C
Scie à ruban ayant une table d'alimentation coulissante, un rail protecteur et une hauteur réelle de coupe SH
telle que 250 mm SH < 420 mm.
La distance A entre le sol et la face supérieure de la table d'alimentation coulissante est comprise entre
800 mm et 1050 mm. Emplacement : sur le sol (voir Figure 4)
Les scies à ruban sont constituées d’un bâti, d’une table d'alimentation fixe ou coulissante, d’un convoyeur à
rouleaux ou d’un convoyeur à bande, d’un poussoir, d’un rail protecteur ajustable en hauteur, d’un volant
supérieur et d’un volant inférieur, d’une lame de scie, d’un guide lame supérieur et inférieur, d’un système de
tension de la lame, d’un système d'entraînement et de composants électriques, selon le type de machine. Le
domaine d’application de la présente Norme européenne ne concerne pas les prescriptions relatives aux
systèmes de chargement/déchargement automatiques, aux convoyeurs, etc.
La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements
dangereux significatifs spécifiques aux scies à ruban, lorsque celles-ci sont utilisées normalement et dans des
conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant (voir Article 4).
La présente Norme européenne traite des phénomènes dangereux qui peuvent se produire pendant la mise
en service, le fonctionnement, le nettoyage, l’utilisation, la maintenance et la mise hors service de la machine.
Pour les scies à ruban posées sur le sol, le produit à scier est posé manuellement sur la table d'alimentation
fixe ou coulissante, puis poussé au moyen du poussoir ou du rebord de la table coulissante ou au moyen du
convoyeur à rouleaux ou du convoyeur à bande dans la zone de coupe de la lame de scie et coupé par cette
dernière.
Stroji za predelavo hrane - Tračne žage - Varnostne in higienske zahteve
Ta evropski standard določa zahteve za konstruiranje in proizvodnjo tračnih žag. Stroji, ki so obravnavani v tem evropskem standardu, se uporabljajo za rezanje kosti in mesa. Tračne žage iz tega evropskega standarda ne zajemajo tračnih žag za predelavo lesa in podobnih materialov, pri čemer se zahteve iz standarda EN 1807 ne uporabljajo.
Tračne žage za domačo uporabo niso obravnavane v tem evropskem standardu.
Ta evropski standard se uporablja samo za stroje, proizvedene po datumu objave tega evropskega standarda.
Ta evropski standard obravnava naslednje vrste strojev:
– tračne žage, zasnovane kot namizni stroji s podnožjem in brez njega,
– tračne žage, zasnovane kot talni stroji,
– tračne žage, vgrajene v rezalno linijo.
Tračne žage, ki so postavljene na tla, je mogoče namestiti na kolesa.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]DKWHYHNahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Scies à ruban - Prescriptions relatives à la sécurité et à l'hygiéneFood processing machinery - Band saw machines - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industry25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 12268:2014SIST EN 12268:2015en,fr,de01-januar-2015SIST EN 12268:2015SLOVENSKI
STANDARDSIST EN 12268:2003+A1:20101DGRPHãþD
SIST EN 12268:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12268
November 2014 ICS 67.260 Supersedes EN 12268:2003+A1:2010English Version
Food processing machinery - Band saw machines - Safety and hygiene requirements
Machines pour les produits alimentaires - Scies à ruban - Prescriptions relatives à la sécurité et à l'hygiéne
Nahrungsmittelmaschinen - Bandsägemaschinen - 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 12268:2014 ESIST EN 12268:2015
EN 12268:2014 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 1.1 General .6 1.2 Description of various machine types .6 1.2.1 General .6 1.2.2 Type A .7 1.2.3 Type B .7 1.2.4 Type C .7 1.2.5 Type D .8 2 Normative references .9 3 Terms and definitions .9 4 List of hazards . 11 5 Safety requirements and/or measures . 12 5.1 General . 12 5.2 Mechanical hazards . 13 5.2.1 General . 13 5.2.2 Saw blade protection outside of the cutting zone – Zone 1 . 13 5.2.3 Protection at the cutting zone – Zone 2. 13 5.2.4 Bottom and top wheels – Zone 3 and Zone 4 . 17 5.2.5 Sliding feed table – Zone 5 . 17 5.2.6 Drive system – Zone 6 . 17 5.3 Electrical hazards . 17 5.3.1 General . 17 5.3.2 Stopping function of switching devices . 17 5.3.3 Protection against water ingress . 17 5.3.4 ON- and OFF-switch . 19 5.3.5 Safety requirements related to electromagnetic phenomena . 19 5.3.6 Wheel-mounted band saw machines . 19 5.4 Hazard from loss of stability . 19 5.5 Noise hazard – Noise reduction at the design stage . 19 5.6 Ergonomic requirements . 20 5.7 Hygiene and cleaning . 20 5.7.1 General . 20 5.7.2 Food area . 20 5.7.3 Splash area . 21 5.7.4 Non-food area . 21 5.7.5 Surface conditions. 21 5.7.6 Cleaning . 21 6 Verification of safety requirements and/or measures . 21 7 Information for use . 23 7.1 General . 23 7.2 Instruction handbook . 23 7.3 Marking . 25 Annex A (normative)
Noise test code for band saw machines (grade 2) . 26 SIST EN 12268:2015
EN 12268:2014 (E) 3 A.1 Emission sound pressure level determination . 26 A.2 Sound power level determination . 26 A.3 Installation and mounting conditions . 26 A.4 Operating conditions . 26 A.5 Measurement . 26 A.6 Information to be recorded . 27 A.7 Information to be reported. 27 A.8 Declaration and verification of the noise emission values . 27 Annex B (normative)
Design principles to ensure cleanability of band saw machines . 28 B.1 Definitions . 28 B.2 Materials of construction . 29 B.3 Design . 29 Annex C (informative)
Examples of work aid tools having a protective function . 34 C.1 General . 34 C.2 Example of a pusher to saw small parts (chicken legs, wings…) . 34 C.3 Example of a device for cutting pork knuckles, shoulders and chest bones… . 35 C.4 Example of a device for cutting of feet, long products… . 36 C.5 Example of a device for cutting frozen plates . 37 C.6 Example of a pusher that is not an integral part of the machine and that slides in the table groove . 38 C.7 Example of a device for slicing parts . 39 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 40 Bibliography . 41
SIST EN 12268:2015
EN 12268:2014 (E) 4 Foreword This document (EN 12268:2014) 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 12268:2003+A1:2010. 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 2006/42/EC. For relationship with EU Directive 2006/42/EC, see informative Annex ZA, which is an integral part of this document. Significant changes: The significant changes with respect to the previous edition EN 12268:2003+A1:2010 are listed below: — Clause 1: clarification of the scope; new clause to describe the machine types; displacement of requirements in the appropriate clauses; — Clause 2: normative references updated; — Clause 3: terms partly revised (e.g. fixed feed table); consistent use throughout the standard; — Clause 4: new presentation in a table; — Clause 5: new 5.2 according to the danger zones; more specific requirements to product pusher, protective rail and blade guide; — Clause 6: verification list updated; — Clause 7: completion of 7.2 with all information referred to in Clause 5, now including operator training; 7.3 now contains the marking; — annexes: old Annex C “Common hazard” deleted and shifted into appropriate clauses; — figures partly renewed. 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 12268:2015
EN 12268:2014 (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 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 12268:2015
EN 12268:2014 (E) 6 1 Scope 1.1 General This European Standard specifies requirements for the design and manufacturing of band saw machines as described in 1.2 (see Figures 1 to 5). The machines covered by this European Standard are used to cut: — bones; — fresh or deep frozen meat with or without bones; — fresh or deep frozen fish, natural or in fillets; — deep frozen block food products; — fresh or deep frozen vegetables; — other products such as pork fat or similar products. The band saw machines covered by this European Standard do not include band saw machines for processing wood and similar materials which are covered by the EN 1807 series. Band saw machines for domestic use are not included in this European Standard. This European Standard is not applicable to band saw machines which were manufactured before its date of publication as EN. This European Standard deals with all significant hazards, hazardous situations and events relevant to band saw 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 deals with the hazards which can arise during all the lifetime of the machine, including the phases of transport, assembly, commissioning, operation, cleaning, use, maintenance, decommissioning, dismantling, disabling and scrapping of the machine. This European Standard covers the following types of machines: — band saw machines designed as table-top machines with and without base; — band saw machines designed as floor-type machines with and without castors. 1.2 Description of various machine types 1.2.1 General Band saw machines consist of a machine casing, a fixed feed table or a sliding feed table, a roller conveyor or conveyor belt, a product pusher, a height-adjustable protective rail, a top and a bottom wheel, a saw blade, an upper and lower blade guide, a blade tensioning device, a drive and electrical components, depending on machine type. This standard does not deal with machinery with automatic loading/unloading systems (e.g. automatic conveyors). SIST EN 12268:2015
EN 12268:2014 (E) 7 On floor-type band saw machines, the product to be cut is placed by hand onto the fixed feed table or sliding feed table and pushed against the cutting zone of the saw blade by means of the product pusher or the rear table wall on the sliding feed table or by means of the roller conveyor or conveyor belt and sawed. 1.2.2 Type A Band saw machine with a fixed feed table and a non-detachable, movable product pusher: Maximum cutting height SH ≤ 250 mm.
Key Key 1 ON-/OFF-switch 1 ON-/OFF-switch 2 product pusher 2 product pusher 3 portioning plate 3 portioning plate 4 table 4 base Figure 1 — Band saw machine type A with product pusher – Location: table top Figure 2 — Band saw machine type A with product pusher – Location: base
1.2.3 Type B Band saw machine with a fixed feed table, a protective rail and a maximum cutting height < 420 mm. 1.2.4 Type C Band saw machine with a sliding feed table, a protective rail and a maximum cutting height ≤ 420 mm. SIST EN 12268:2015
EN 12268:2014 (E) 8
Key Key 1 ON-/OFF-switch 1 ON-/OFF-switch 2 door 2 door 3 protective rail 3 protective rail 4 fixed feed table 4 finger protection bar 5 machine rack 5 sliding feed table
6 machine rack Figure 3 — Band saw machine type B with fixed feed table and protective rail Figure 4 — Band saw machine type C with sliding feed table and protective rail 1.2.5 Type D Band saw machine with non-automatic feed and removal unit (e.g. roller conveyor, conveyor belt); maximum cutting height SH ≤ 550 mm.
Key 1 roller conveyor or transport conveyor Figure 5 — Band saw machine type D with feed and removal unit SIST EN 12268:2015
EN 12268:2014 (E) 9 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, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles 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 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) EN ISO 3744, 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) EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871) EN ISO 11204:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204:2010) EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1) EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection (ISO 14119:2013) 3 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 portioning plate plate parallel to the saw blade and adjustable to the required slice thickness SIST EN 12268:2015
EN 12268:2014 (E) 10 3.2 bottom wheel wheel below the table for driving the saw blade 3.3 blade guide component for guiding the saw blade 3.4 blade tensioning device component for tensioning and releasing the tension of a saw blade 3.5 finger protection bar safeguard on the table rear wall to prevent fingers from reaching the cutting zone 3.6 product pusher movable device for manually pushing the product towards the cutting zone 3.7 last slice device plate for feeding the last part of the product 3.8 saw blade cutting tool in the form of a continuous toothed band 3.9 protective rail safeguard for covering the unused portion of the saw blade above the cutting zone 3.10
cutting height thickness of product that can be processed by the machines 3.11 table rear wall device on the sliding feed table to hold the product and to push it towards the cutting zone 3.12 top wheel pulley wheel for reversing the saw blade above the table 3.13 cutting line system for automatic product processing 3.14 fixed feed table table surface for manual product supply 3.15 sliding feed table movable table surface with table rear wall for product supply SIST EN 12268:2015
EN 12268:2014 (E) 11 4 List of hazards This clause contains all the significant hazards, hazardous situations and events, identified by risk assessment as significant for this type of machine (see Figure 6) and which require measures to eliminate or reduce the risk associated with the identified hazards (see Table 1). Table 1 — List of significant hazards Hazards, hazardous situations and hazardous events Location or cause Clause/subclause in this European Standard Hazards General 5.1 Mechanical hazards General 5.2.1 — crushing; — severing; — shearing; — trapping; — cutting; — drawing in zone 1: area of saw blade outside the cutting zone 5.2.2 zone 2: cutting zone 5.2.3 zone 3 and zone 4: bottom and top wheels 5.2.4 zone 5: sliding feed table 5.2.5 zone 6: drive units 5.2.6 Electrical hazards electric shock from direct or indirect contact with live components external influences on electrical equipment (e.g. cleaning with water) 5.3 Hazards generated by loss of stability the complete machine 5.4 Hazards generated by noise machines generate noise that can lead to damage of hearing 5.5 Hazard generated by neglecting ergonomic principles unhealthy body posture or excessive physical effort; inadequate consideration of human hand/arm or foot/leg anatomy by design of machines; no respect of the working area. 5.6 Hazard generated by neglecting hygienic design principles e.g. contamination by microbial growth or foreign materials 5.7
SIST EN 12268:2015
EN 12268:2014 (E) 12
Key 1 zone 1 2 zone 2 3 zone 3 4 zone 4 5 zone 5 6 zone 6 7 zone 7 Figure 6 — Band saw machine – Danger zones 5 Safety requirements and/or measures 5.1 General Band-saw machines shall comply with the safety requirements and/or protective measures of this clause. In addition, they 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. Where the means of reducing the risk is by the physical arrangement or positioning of the installed band-saw 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. The safety related parts of the control system shall present at least a performance level “c” in accordance with EN ISO 13849-1:2008. For specific intended use and/or applications some examples for work aid tools with a protective function are given in Annex C. SIST EN 12268:2015
EN 12268:2014 (E) 13 5.2 Mechanical hazards 5.2.1 General Saw blades shall be removed periodically. Saw blades are sharp and special measures shall be taken. For such blades, designers shall provide means of attaching a tool to the blade to avoid hand contact and a box, or surround guard, to protect against the sharp edges of the blade during handling and transportation. Explanations on the use of these protective means shall be included in the instructions for use. The interlocking system for movable guards shall be built inside of the machine housing and shall comply with EN ISO 14119:2013, 4.2 and Clause 7. In general band saw machines do not require an emergency stop device. If no emergency stop device is fitted, the normal OFF-switch shall be easily reachable from the operator position (see Figure 1 and Figure 2) and shall be protected against unintentional switch-on (e.g. by a protective collar). Cutting tool handling: cutting tools shall be removed periodically. Cutting tools are sharp and special measures shall be taken. For such blades, designers shall provide means of attaching a tool to the blade to avoid hand contact and a box, or surround guard, to protect against the sharp edges of the blade during handling and transportation. Explanations on the use of these protective means shall be included in the instructions for use. Verification: Visual inspection of the machine and its documentation. 5.2.2 Saw blade protection outside of the cutting zone – Zone 1 Access to the saw blade outside the cutting zone shall be prevented. This can be achieved e.g. by the following measures: A closed machine casing shall be provided. The doors of the casing and the removable or tiltable feed table shall be interlocked. Fixing systems for fixed guards or for demountable parts of the machine casing (i.e. designed as fixed guards) shall remain attached to the guards or to the machine when the guards are removed. For requirements relating to the interlocking system of doors and the feeding table, see 5.2.1. After opening the door or the feed table more than 10 mm, the blade shall come to a standstill as soon as is possible, but the time taken shall not exceed 4 s. 5.2.3 Protection at the cutting zone – Zone 2 5.2.3.1 Type A Access to the cutting zone of the saw blade shall be prevented. This can be achieved e.g. by the following measures: A non-detachable, movable product pusher shall be provided. The product pusher shall be designed so as to automatically revert to its protective position by its own weight. Distance A1 between the product pusher and the non-detachable feed table shall be ≤ 6 mm. Design example, see section A – A, Figure 7. A horizontal adjustable portioning plate of a height > 60 mm shall be provided. The portioning plate may be designed to be tiltable and removable. It shall be possible to change the saw blade without removing the product pusher. SIST EN 12268:2015
EN 12268:2014 (E) 14 In case of having a combination of rail and pusher the requirements of type B shall be considered. Dimensions in millimetres
Key 1 saw blade A1 distance between the product pusher in its protective position and the non-detachable feed table Figure 7 — Schematic design of a product pusher 5.2.3.2 Type B Access to that portion of the cutting zone of the saw blade which is not used for cutting shall be prevented. This can be achieved e.g. by the following measures: A non-detachable blade guide and a height adjustable protective rail shall be provided (see Figures 3, 4 and 8). A maximum distance of 6 mm shall be installed, either between product pusher and table or between blade guide and table. It shall be self-blocking or capable of being blocked in position. When unblocking the height adjustable protective rail, an abrupt lowering to < 25 mm shall be avoided. The vertical force needed to move the guard shall not exceed 20 N ± 2 N. SIST EN 12268:2015
EN 12268:2014 (E) 15 Dimensions in millimetres
Key 1 saw blade Figure 8 — Schematic design of a protective rail 5.2.3.3 Type C The sliding feed table shall be provided with a system that ensures the safe handling of the product so that access to the saw blade is prevented by a table rear wall with a finger protection bar. The height of the table rear wall shall be > 60 mm, and the finger protection bar shall be > 100
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