SIST EN 12268:2003+A1:2010
(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 (see Figures 1 to 5). 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 which are placed on the floor and can be wheel-mounted. - Type A Band saw machine with a feed table and a fixed product pusher Cutting height SH < 250 mm - 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" Location: Table (see Figure 1) or base (see Figure 2). Distance A from the floor to the top surface of the feed table is between 800 mm and 1050 mm.
Nahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm legt Anforderungen an die Konstruktion und Herstellung von Bandsägemaschinen
fest (siehe Bild 1 bis 5).
Die in dieser Europäischen Norm behandelten Maschinen werden zum Schneiden von Knochen und Fleisch
verwendet.
Die in dieser Europäischen Norm behandelten Bandsägen sind keine Bandsägen zum Bearbeiten von Holz
und ähnlichen Materialien und die in EN 1807 beschriebenen Anforderungen gelten nicht.
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 Norm umfasst folgende Bauarten von Maschinen:
!
⎯ Bandsägemaschinen, die als Tischaufsatzmaschinen mit und ohne Tisch gestaltet sind;
⎯ Bandsägemaschinen, die als Bodenstandmaschinen gestaltet sind;
⎯ Bandsägemaschinen, die in eine Schneidelinie eingefügt sind."
Bandsägemaschinen, die auf dem Fußboden aufgestellt werden, können verfahrbar ausgeführt sein (siehe
Bild 6).
⎯ Typ A
Bandsägemaschine mit Zuführtisch und fest angebrachtem Materialdrücker
Schnitthöhe SH < 250 mm
Aufstellungsort: Tisch (siehe Bild 1) oder Untergestell (siehe Bild 2). Abstand A zwischen Fußboden und
Fläche Zuführtisch liegt in der Regel zwischen 800 mm und 1 050 mm.
Machines pour les produits alimentaires - Scies à ruban - Prescriptions relatives à la sécurité et à l'hygiène
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 et de la viande. Les scies à ruban couvertes par la présente Norme européenne diffèrent des scies à ruban pour le traitement du bois. Les prescriptions décrites dans l’EN 1807 ne s'appliquent pas aux scies à ruban décrites ici. 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 scies à ruban suivants : Les scies à ruban qui sont installées sur le 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 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."
Plan de pose : 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.
Stroji za predelavo hrane - Tračne žage - Varnostne in higienske zahteve (vključno z dopolnilom A1)
Ta evropski standard določa zahteve za načrtovanje in izdelavo tračnih žag (glej Slike 1 do 5). Žage, ki jih zajema ta evropski standard, se uporabljajo za rezanje kosti in mesa. Tračne žage, ki jih zajema ta evropski standard, ne vključujejo tračnih žag za obdelavo lesa in podobnih materialov in zahteve EN 1807 ne veljajo. Ta evropski standard ne vključuje tračnih žag za domačo uporabo. Ta evropski standard velja samo za žage, izdelane po datumu izdaje tega evropskega standarda. Ta evropski standard zajema naslednje vrste žag: Tračne žage, nameščene na tleh, ki se lahko namestijo na kolo. - Tračne žage tipa A s podajalno mizo in pritrjenim potiskalnikom Višina rezanja SH < 250 mm – Tračne žage, narejene kot namizne žage s podlago ali brez nje – Tračne žage, narejene kot talne žage – Tračne žage, vgrajene v rezalno linijo Mesto: Miza (glej Sliko 1) ali podlaga (glej Sliko 2). Razdalja A med tlemi in zgornjo površino podajalne mize je med 800 mm in 1050 mm.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Scies à ruban - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Band saw machines - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 12268:2003+A1:2010SIST EN 12268:2003+A1:2010en,fr,de01-oktober-2010SIST EN 12268:2003+A1:2010SLOVENSKI
STANDARDSIST EN 12268:20031DGRPHãþD
SIST EN 12268:2003+A1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12268:2003+A1
May 2010 ICS 67.260 Supersedes EN 12268:2003English 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'hygiène
Nahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 9 January 2003 and includes Amendment 1 approved by CEN on 9 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 12268:2003+A1:2010: ESIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 2 Contents page Foreword . 3Introduction . 41Scope . 52Normative references . 83Terms and definitions . 94List of hazards . 104.1General . 104.2Electrical hazards . 124.3Hazard from loss of stability . 124.4Noise hazard . 124.5Hazards from non-compliance with ergonomic principles . 124.6Hazards from non-compliance with hygiene principles . 125Safety requirements and/or measures . 135.1General . 135.2Mechanical hazards . 135.3Electrical hazards . 175.4Hazard from loss of stability . 195.5Noise hazard - Noise reduction at the design stage . 205.6Ergonomic requirements . 205.7Hygiene and cleaning . 206Verification of safety requirements and/or measures . 227Information for use . 237.1General . 237.2Operator training. 258Marking . 25Annex A (normative)
Noise test code for band saw machines (grade 2) . 27Annex B (normative)
Design principles to ensure cleanability of band saw machines . 29Annex C (normative)
Common hazards for food processing machines and reduction
requirements applicable to band saw machines . 34Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 36Bibliography . 37
SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 3 Foreword This document (EN 12268:2003+A1:2010) 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. It has been prepared by Working Group 2 "Meat Processing Machinery" of CEN/TC 153. 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 November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. This document includes Amendment 1, approved by CEN on 2010-04-09. This document supersedes EN 12268:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags!"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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). !For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document." !deleted text" According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 4 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 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 5 1 Scope This European Standard specifies requirements for the design and manufacturing of band saw machines (see Figures 1 to 5). 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 which are placed on the floor and can be wheel-mounted (see Figure 6). Type A Band saw machine with a feed table and a fixed product pusher Cutting height SH < 250 mm ! 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" Location: Table (see Figure 1) or base (see Figure 2). Distance A from the floor to the top surface of the feed table is between 800 mm and 1050 mm. SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 6
Key 1 2 3 4 ON / OFF switch Product pusher Portioning plate Table 1 2 3 4 ON / OFF switch Product pusher Portioning plate Base Figure 1 — Type A, Band saw machine
Figure 2 — Type A, Band saw machine with
with product pusher - Location: table top
product pusher - Location: base
Type B Band saw machine with a feed table, a protective rail and a cutting height 250 mm < SH < 420 mm. Distance A from the floor to the top surface of the feed table is between 800 mm and 1050 mm. Location: floor (see Figure 3) Type C Band saw machine with a sliding feed table, a protective rail and a cutting height 250 mm < SH < 420 mm. Distance A from the floor to the top surface of the sliding feed table is between 800 mm and 1050 mm. Location: floor (see Figure 4). SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 7
Key 1 2 3 4 5 ON / OFF switch Door Protective rail / Product pusher Feed table Machine rack 1 2 3 4 5 6 ON
/ OFF switch Door Protective rail / Product pusher Finger protection bar Sliding feed table Machine rack
Figure 3 — Type B, Band saw machine
Figure 4 — Type C Band saw machine with rail and feed with protective rail and fixed feed table
sliding table
Type D Band saw machine with feed and removal unit (e.g. roller conveyor, conveyor belt); integrated in a cutting plant, cutting height SH < 550mm. Distance A from the floor to the feed surface is between 800 mm and 1050 mm. Location: floor (see Figure 5).
SH < 550 mm Key 1 Roller conveyor or transport conveyor
Figure 5 — Type D, Band saw machine with feed and removal unit SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 8 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. The requirements for automatic loading/unloading systems, conveyors, etc. do not fall within the scope of this European Standard. !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 commissioning, operation, cleaning, use, maintenance and decommissioning of the machine." 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. 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 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 1005-1, Safety of machinery — Human physical performance — Part 1: Terms and definitions EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1: 2005, modified) EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 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) SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 9 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 (ISO 12100-2:2003) EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) 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 and the following apply." 3.1 portioning plate plate parallel to the saw blade and adjustable to the required slice thickness 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 device 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 device 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 SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 10 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 unit for automatic product processing with roller conveyors or conveyor belts 3.14 feed table table surface for manual product supply 3.15 sliding feed table movable table surface with table rear wall for product supply 4 List of hazards 4.1 General This clause and annex C contains the hazards and hazardous situations, as far as they are dealt with in this European Standard, identified by a risk assessment significant for meat band-saws and which require action to eliminate or reduce risk. Before using this standard it is important to carry out a risk assessment of the meat band-saw to check that it has the hazards identified in this clause. 4.1.1 Mechanical hazards Band saw machines type A to D (see Figure 6) 4.1.2 Area of saw blade Zone 1 Saw blade outside of the cutting zone Hazard of cutting or severing fingers. Zone 2 Saw blade at cutting zone Hazard of cutting or severing fingers. SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 11
Key 1 2 3 4 5 6 7 ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 Figure 6 — Band saw machine - Danger zones Zone 3 Inrunning nip on bottom and top wheels Crushing hazard to fingers. Zone 4 Spokes on bottom and top wheels Impact hazard to hand. Zone 5 Sliding feed table Impact or crushing hazard to hands or feet, should the sliding feed table fall out of the guide. SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 12 4.1.3 Drive units Zone 6 Drive of top and bottom wheels Crushing hazard to fingers or hand 4.2 Electrical hazards 4.2.1 Direct or indirect contact with live parts Hazard from electrical shock to the body. 4.2.2 Electrical components with insufficient safety level Hazard of mechanical injury to the body due to malfunction 4.3 Hazard from loss of stability Zone 7 Wheel-mounted band saw machines and table top machines Hazard of impact or squeezing to the body if machine topples over. 4.4 Noise hazard Noise can lead to permanent loss of hearing, ringing in the ears (tinnitus), fatigue, stress etc. 4.5 Hazards from non-compliance with ergonomic principles Unhealthy body posture or excessive physical effort Inadequate consideration of human hand/arm or foot/leg anatomy during machine design Hazard of physical damage 4.6 Hazards from non-compliance with hygiene principles Microbial causes Spoilage of meat product Damage to health of the consumer through food poisoning Infection of the operator Chemical causes Contamination of foodstuff through residues of cleaning and disinfecting agents causing harm to consumer SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 13 Physical causes Entrapped items originating from raw materials, machine parts or other sources causing harm to the consumer 5 Safety requirements and/or measures 5.1 General Meat band-saw machines shall comply with the safety requirements and/or protective measures of this clause and annex C.
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 (e.g. sharp edges). !For hazards which are to be reduced by the application of the type B-standards such as EN 614-1, EN 953,
EN 1005-3, EN 1088, EN 60204-1, EN 60529, EN ISO 12100, EN ISO 13849-1 and EN ISO 13857, the manufacturer shall carry out a risk assessment to establish the requirements of the type B-standard. This specific risk assessment shall be part of the general risk assessment of the machine." Where the means of reducing the risk is by the 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. 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 Band saw machines types A - D, saw blade protection 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 5.2.2. After opening the door or the feed table more than 10 mm, the blade should come to a standstill as soon as is possible, but the time taken shall not exceed 4 s. 5.2.2 Interlocking devices !The interlocking system shall comply with 4.2.1 of EN 1088:1995, and the safety related parts of the control system shall present at least a performance level “c” in accordance with EN ISO 13849-1:2008." The interlocking device shall be built inside of the machine housing in order to fulfil hygienic requirements, protect against mechanical damages, protect against the effects of cleaning and disinfection materials, protect against the effects of cleaning fluids (water), SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 14 protect against defeating by simple methods, and comply with 5.7 of EN 1088:1995. In the instruction handbook, the manufacturer shall indicate the need for verification of the interlocking devices, and for the user to determine the frequency of verification depending upon the usage of the machine. 5.2.3 Band saw machines type A with fixed feed table, cutting height SH < 250 mm Zone 2, 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 fixed, movable product pusher shall be provided (see Figures 1 and 2). 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 feed table shall be < 6 mm (see Figure 2). Design example, see section A - A, Figures 1 and 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.
Key 1
Saw blade
Figure 7 — Design example of product pusher section A – A
5.2.4 Band saw machine with fixed feed table type B or sliding feed table type C, cutting height
SH ≥≥≥≥ 250 mm - SH ≤≤≤≤ 420 mm Zone 2, type B and type C 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 height-adjustable, fixed protective rail shall be provided (see Figures 3 and 4). The protective rail shall be designed such that the uncovered length of the saw blade with the protective rail in the lowest position is maximal 105 mm (see Figure 9). Design example, see section B - B (see Figures 3 and 8). SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 15
Key 1
Saw blade
Figure 8 — Design example of protective rail section B – B Zone 2, type C The sliding feed table shall be provided with a table rear wall with a finger protection bar. The table rear wall shall be > 60 mm high, the finger protection bar shall be > 100 mm high and > 50 mm wide. Tapering towards the top to 25 mm is admissible. The finger protection bar shall overlap the saw blade in the position of maximum forward travel of the sliding feed table by > 10 mm (see Figure 9 and 10). SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 16
Key 2
3
Saw blade Finger protection bar
123 Table rear wall Saw blade Finger protection bar of maximum forward position Figure 9 — Band saw machine with protective
Figure 10 — Protective measures at sliding feed rail type B and sliding feed table type C
table type C When the sliding feed table is locked or tilted down, it shall be possible to establish a continuous table surface or this shall be present. In the case of a locked sliding feed table, it shall be possible to tilt down the table rear wall with the finger protection bar. If the finger protection bar is tilted down, the sliding feed table shall be prevented from being moved. A horizontal adjustable portioning plate of a height > 60 mm shall be provided. The portioning plate may be tiltable and detachable. A last slice device of a height > 150 mm shall be provided. The last slice device may be provided with spikes on the side facing the saw blade. The last slice device may be removable. A removable product pusher may be provided. Zone 5, type C SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 17 The sliding feed table shall be designed so as to prevent any jumping out or sliding out from the slide and guide rails. 5.2.5 Bottom and top wheels, type A - D Zone 3 Access to the inrunning nips on the bottom and top wheels shall be prevented. This can be achieved e.g. by the following measures: A closed machine casing shall be provided, see 5.2.1. Zone 4 Access to spokes of the bottom and top wheels shall be prevented. This can be achieved e.g. by the following measures: A closed machine casing shall be provided, see 5.2.1. 5.2.6 Band saw machine type D in cutting line Zone 1 For requirements see 5.2.1. Zone 2 For requirements relating to the protective rail, see 5.2.4. The exposed length of the saw blade shall be < 550 mm. A product pusher and a portioning plate are not required. Zones 3 and 4 For requirements relating to the machine casing, see 5.2.1 and 5.2.5. 5.2.7 Drive system, type A - D Zone 6 Access to the danger points on the drive system shall be prevented. This can be achieved e.g. by the following measures: Guards (e.g. doors) in accordance with 3.2 of EN 953:1997 shall be provided on the drive mechanism, which may be fixed or interlocked. !Fixing systems of fixed guards shall remain attached to these guards or to the machine when the guards are removed." If guards are removable e.g. for changing the operating process or for cleaning purposes, they shall be interlocked. For requirements relating to the interlocking systems of guards, see 5.2.2. 5.3 Electrical hazards 5.3.1 General The electrical equipment shall comply with EN 60204-1. SIST EN 12268:2003+A1:2010
EN 12268:2003+A1:2010 (E) 18 5.3.2 Stopping function of switching devices The stop function of switching devices shall be in accordance with Category 0, 9.2.2 of !EN 60204-1:2006". 5.3.3 Emergency stop-device !In general band saw machines do not require an emergency stop device. Nevertheless, if the risk assessment to be carried out by the manufacturer results in the conclusion that such a device would reduce the stopping time, the machine shall be fitted with an emergency stop device. If no emergency stop device is fitted, the normal OFF switch shall be easily reachable from the operator position." 5.3.4 Protection against water ingress 5.3.4.1 IP degrees of protection Electrical operating components shall comply with the following degrees of protection in accordance with
EN 60529: IP X5 External electrical operating components on the machine, on the control box on the machine, on the control box located in the process room. IP X3 Internal electrical operating components in the machine with enclosed housing with the degree of protection IP X5 and open lower surface. Protection against direct and indirect impact of a water jet shall be assured. IP X2 Internal electrical operating components in a machine with completely enclosed housing with the degree of protection IP X5. Protection against condensate water shall be provided. in the control box enclosure. IP X0 Internal electrical operating components in a machine with completely enclosed housing with the degree of protection IP X5. Protection against condensate water shall be provided, and the safety of fingers and the back of hand be assured. 5.3.4.2 Hoods Band saw machines which are intended to be cleaned by means of pressurized water, shall include measures to prevent ingress of water into the external electrical o
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