SIST EN 12267:2003+A1:2010
(Main)Food processing machinery - Circular saw machines - Safety and hygiene requirements
Food processing machinery - Circular saw machines - Safety and hygiene requirements
This European Standard specifies requirements for the design and manufacturing of circular saw machines. The machines covered by this European Standard are used to cut bone and meat. The circular saw machines covered by this European Standard do not include circular saw machines for processing of wood and similar materials and the requirements of EN 1870-1 do not apply. Circular saw machines for domestic use are not included in this European Standard. This European Standard applies only to machines which are manufactured after the date of issue of this European Standard. This European Standard covers the following types of machines: Circular saw machines with a feed table and a fixed product pusher - The distance "A" from the floor to the top surface of the feed table is from 800 mm to 1050 mm. The saw blade diameter is between 350 mm and 400 mm. - Circular saw machines installed in a cutting line (e.g. conveyor belt or roller conveyor), e.g. with a protective component which can be lifted on the feed and discharge side. The saw blade diameter is between 350 mm and 400 mm.
Nahrungsmittelmaschinen - Kreissägemaschinen - Sicherheits- und Hygienebestimmungen
Diese Europäische Norm spezifiziert Anforderungen an die Konstruktion und Herstellung von Kreissägemaschinen
(siehe Bilder 1 und 2).
Die von dieser Europäischen Norm behandelten Maschinen werden zum Schneiden von Knochen und Fleisch
verwendet.
Die in dieser Europäischen Norm behandelten Kreissägemaschinen sind keine Kreissägemaschinen zum
Bearbeiten von Holz und ähnlichen Materialien und die in EN 1870-1:1999 beschriebenen Anforderungen
gelten nicht.
Kreissägemaschinen für den Hausgebrauch werden von dieser Europäischen Norm nicht behandelt.
Diese Europäische Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Europäischen Norm
erstellt werden.
Diese Europäische Norm behandelt folgende Bauarten von Maschinen:
Kreissägemaschinen mit Zuführtisch und fest angebrachtem Materialdrücker:
⎯ Der Abstand „A“ zwischen Fußboden und Fläche des Zuführtisches zwischen 800 mm und 1 050 mm.
Der Durchmesser des Sägeblattes liegt zwischen 350 mm und 400 mm (siehe Bild 1).
⎯ Kreissägemaschinen, eingebaut in eine Zerlegeanlage (z. B. Transportband oder Rollenbahn), z. B. mit
anhebbarem Schutzteil an der Zuführ- und Abführseite. Der Durchmesser des Sägeblattes liegt zwischen
350 mm und 400 mm (siehe Bild 2).
Machines pour les produits alimentaires - Scies circulaires - Prescriptions relatives à la sécurité et à l'hygiène
La présente Norme européenne spécifie les prescriptions relatives à la conception et à la fabrication de scies circulaires (voir les Figures 1 et 2). Les machines concernées par la présente Norme européenne sont utilisées pour couper des os et de la viande. Les scies circulaires couvertes par la présente Norme européenne ne sont pas des scies circulaires destinées à scier du bois et d'autres matériaux et les prescriptions de l’EN 1870-1 ne s’appliquent pas. Les scies circulaires à usage domestique ne sont pas incluses dans 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 circulaires ayant une table d'alimentation et un poussoir articulé fixe. - La distance «A» allant du sol à la face supérieure de la table d'alimentation est comprise entre 800 mm et 1 050 mm. Le diamètre de la lame de scie est compris entre 350 mm et 400 mm (voir Figure 1).
- Les scies circulaires intégrées dans une ligne de coupe (par exemple convoyeur à bande ou à rouleaux) par exemple ayant un dispositif de protection qui peut être relevé coté alimentation et coté évacuation. Le diamètre de la lame de scie est compris entre 350 mm et 400 mm (voir Figure 2).
Stroji za predelavo hrane - Krožne žage - Varnostne in higienske zahteve (vključno z dopolnilom A1)
Ta evropski standard določa zahteve za načrtovanje in izdelavo krožnih žag. Žage, ki jih zajema ta evropski standard, se uporabljajo za rezanje kosti in mesa. Krožne žage, ki jih zajema ta evropski standard, ne vključujejo krožnih žag za obdelavo lesa in podobnih materialov in zahteve EN 1870-1 ne veljajo. Ta evropski standard ne vključuje krožnih 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: Krožne žage s podajalno mizo in pritrjenim potiskalnikom - Razdalja »A« med tlemi in zgornjo površino podajalne mize je med 800 mm in 1050 mm. Premer rezila žage je med 350 mm in 400 mm. - Krožne žage, nameščene na rezalni liniji (npr. na transportnem ali tekočem traku), npr. z varovalom, ki se lahko dvigne na podajalni in izpustni strani. Premer rezila žage je med 350 mm in 400 mm.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Kreissägemaschinen - Sicherheits- und HygienebestimmungenMachines pour les produits alimentaires - Scies circulaires - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Circular 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 12267:2003+A1:2010SIST EN 12267:2003+A1:2010en,fr,de01-oktober-2010SIST EN 12267:2003+A1:2010SLOVENSKI
STANDARDSIST EN 12267:20031DGRPHãþD
SIST EN 12267:2003+A1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12267:2003+A1
May 2010 ICS 67.260 Supersedes EN 12267:2003English Version
Food processing machinery - Circular saw machines - Safety and hygiene requirements
Machines pour les produits alimentaires - Scies circulaires -Prescriptions relatives à la sécurité et à l'hygiène
Nahrungsmittelmaschinen - Kreissägemaschinen - Sicherheits- und Hygienebestimmungen 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 12267:2003+A1:2010: ESIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 2 Contents page Foreword . 3Introduction . 41Scope . 52Normative references . 73Terms and definitions . 84List of hazards . 84.1General . 84.2Mechanical hazards . 84.3Electrical hazards . 104.4Hazard from loss of stability . 104.5Noise hazard . 104.6Hazards from non-compliance with ergonomic principles . 114.7Hazards from non-compliance with hygiene principles . 115Safety requirements and/or measures . 115.1General . 115.2Mechanical hazards . 115.3Electrical hazards . 145.4Hazard from loss of stability . 165.5Noise hazard . 175.6Ergonomic requirements . 175.7Hygiene and cleaning . 176Verification of safety requirements and/or measures . 197Information for use . 207.1General . 207.2Operating instruction . 207.3Operator training. 228Marking . 22Annex A (normative)
Noise test code for circular saw machines (grade 2) . 24Annex B (normative)
Design principles to ensure cleanability of circular saw machines . 26Annex C (normative)
Common hazards for food processing machines and reduction requirements applicable to circular saw machines . 31Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 33Bibliography . 34 SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 3 Foreword This document (EN 12267:2003+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 12267:2003. 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 12267:2003+A1:2010
EN 12267:2003+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 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 5 1 Scope This European Standard specifies requirements for the design and manufacturing of circular saw machines (see Figures 1 and 2). The machines covered by this European Standard are used to cut bone and meat. The circular saw machines covered by this European Standard do not include circular saw machines for processing of wood and similar materials and the requirements of EN 1870-1 do not apply. Circular saw machines for domestic use are not included in this European Standard. This European Standard applies only to machines which are manufactured after the date of issue of this European Standard. This European Standard covers the following types of machines: Circular saw machines with a feed table and a fixed product pusher The distance "A" from the floor to the top surface of the feed table is from 800 mm to 1050 mm. The saw blade diameter is between 350 mm and 400 mm (see Figure 1). Circular saw machines installed in a cutting line (e.g. conveyor belt or roller conveyor), e.g. with a protective component which can be lifted on the feed and discharge side. The saw blade diameter is between 350 mm and 400 mm (see Figure 2). SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 6
Key 1 2 3 4 5 6 7 8 9 10 11 12 13 Product pusher Handle
Feed table Interlocking switch for feed table ON / OFF switch Chip pan Operator side Protective hood Hinge Saw blade 350 mm - 400 mm
diameter Interlocking switch for chip pan Machine rack Locking device 1 2 3 4 5
Protective hood Roller conveyor or belt conveyor Feed side Casing Chip pan Figure 1 — Circular saw machine with machine base
Figure 2 — Circular saw machine in cutting line Circular saw machines comprise a machine base, a fixed, foldable feed table, a product pusher, a protective hood which can be lifted, a saw blade, a drive and electrical components, depending on machine type. Circular saw machines with a machine base can be wheel-mounted (see Figure 1). !deleted text" !This European Standard deals with all significant hazards, hazardous situations and events relevant to circular 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 circular saw machines (see Figure 3) the product to be cut is placed by hand onto the feed table and pushed against the cutting zone of the saw blade by means of the product pusher and sawed. On circular saw machines which are installed in a cutting line (see Figure 4) the product to be cut is pushed by hand via the conveyor belt or roller conveyor against the cutting zone of the saw blade and sawed. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 7 2 Normative references !The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 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, 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 (EN ISO 11204:1995) EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles and specifications (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) SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 8 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 movable protective hood movable device for covering the saw blade at the cutting zone and on the discharge side above the feed level 3.2 product pusher movable device for pushing the bone against the cutting zone and for covering the saw blade above the table 3.3 saw blade toothed cutting tool in the form of a disc 3.4 protective hood device for covering the saw blade above and below the table except for the cutting zone
3.5 cutting line device for automatic product processing with conveyor belts or roller conveyors 3.6 feed table surface with an integrated saw blade for placing the bone in position for cutting 4 List of hazards 4.1 General This clause and annex C (normative) contain the hazards and hazardous situations based upon EN 1050:1996 as far as they are dealt with in this European Standard, identified by a risk assessment significant for circular saw cutting machines, and actions to eliminate or reduce risk. Before using this standard it is important to carry out a risk assessment of the cutting machine to check that it has the hazards identified in this clause. 4.2 Mechanical hazards 4.2.1 Circular saw machine with feed table and fixed product pusher (see
Figure 3) 4.2.1.1 Area of saw blade Zone 1 Saw blade at the cutting zone, above the feed table Hazard of cutting or severing fingers. Zone 2
Saw blade outside the cutting zone, above the feed table Hazard of cutting or severing fingers. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 9 Zone 3
Saw blade outside the cutting zone, below the feed table Hazard of cutting or severing fingers. 4.2.1.2 Area of drive mechanism Zone 4 Saw blade drive Crushing hazard to fingers or hand. 4.2.2 Circular saw machine in cutting line (see Figure 4) - Area of saw blade
Zone 1 Saw blade at the cutting zone, above the feed plane Hazard of cutting or severing fingers. Zone 2
Saw blade outside the cutting zone, above the feed plane Hazard of cutting or severing fingers Zone 3
Saw blade outside the cutting zone, below the feed plane Hazard of cutting or severing fingers. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 10
Key 1 2 3 4 5 Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 1 2 3
Zone 1 Zone 2 Zone 3
Figure 3 — Floor type circular saw machine
Figure 4 — Circular saw machine in cutting line
- danger zones
- danger zones
4.3 Electrical hazards 4.3.1 Direct or indirect contact with life parts Hazard from electrical shock to the body. 4.3.2 Electrical components with insufficient safety level Hazards arising from malfunction of electrical components. Hazards from the effect of failure/unexpected stoppage on other elements in a cutting line. 4.4 Hazard from loss of stability Zone 5 Wheel-mounted circular saw machines (see Figure 3). Impact or squeezing hazard to the body if machine topples over. 4.5 Noise hazard Noise can lead to permanent loss of hearing, ringing in the ears (tinitus), fatigue, stress etc. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 11 4.6 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 injury to the body 4.7 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 Physical causes Entrapped items originating from raw materials, machine parts or other sources causing harm to consumer 5 Safety requirements and/or measures 5.1 General Circular saws for meat and bone 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 circular saw 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 saw, 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 Circular saw machines with feed table and fixed product pusher 5.2.1.1 Protection of saw blade Zone 1 Access to the cutting zone on the saw blade shall be prevented. This can be achieved e.g. by the following measures: SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 12 A movable product pusher with a handle shall be permanently fixed to the protective hood of the saw blade. The product pusher shall be designed so that it automatically falls back into its protective position by its own dead weight. It shall not be possible for the pusher to make contact with the cutting-edge of the saw blade. The distance "A1“ between product pusher in protective position and feed table shall be < 6 mm (see Figure 5). Zone 2 Access to the teeth of the saw blade outside of the cutting zone and above the feed table shall be prevented. This can be achieved e.g. by the following measures: Except for the cutting zone of the saw blade, a guard (e.g. a fixed protective hood) shall be provided above the feed table (see Figure 5). It shall be possible to replace the saw blade without removal of the protective hood and the product pusher. If the protective hood with the product pusher is removable it shall be interlocked.
The interlocking system of the protective hood shall conform to the requirements described in 5.2.1.2. After actuation of the interlocking switch of the protective hood the blade should come to a standstill as soon as is possible, but the time taken shall not exceed 4 s.
Key 1 2 Automatically falls back by its own weight Protective hood fixed or interlocked 1 2 Fixed protection Closed machines casing Figure 5 — Material pusher/protective hood
Figure 6 — Protection bar Zone 3 Access to the saw blade below the feed table shall be prevented. This can be achieved e.g. by the following measures: A fixed protection bar or a closed machine casing shall be provided on the circumference of the saw blade (see Figure 6). The feed table may be foldable and interlocked. The chip pan or a chip removal flap shall be interlocked on machines without protection bar. The saw blade shall come to a standstill within 4 s after actuation of the interlocking switches. For requirements relating to the interlocking system of the feed table, chip pan and chip removal flap, see 5.2.1.2. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 13 !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." 5.2.1.2 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), 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 regular verification of the interlocking devices, and for the user to determine the frequency of verification depending upon the usage of the machine. 5.2.2 Circular saw machine in cutting line Zones 1 and 2 Access to the saw blade at the cutting zone and discharge side above the feed plane (transport device) shall be prevented. This can be achieved e.g. by the following measures: A guard (e.g. a protective hood) shall be provided on the feed and discharge side above the feed plane (transport device). When lifted, the protective hood may expose the cutting zone as well as the product discharge zone and shall automatically revert to its protective position by its own dead weight (see Figure 7). If the protective hood is removable, it shall be interlocked. The saw blade shall come to a standstill within 4 s after actuation of the interlocking switch of the protective hood. For requirements relating to the interlocking system of the removable protective hoods, see 5.2.1.2.
Key 1 Automatically falls back by its dead weight 1 Closed machine casing
Figure 7 — Protective hoods
Figure 8 — Machine casing SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 14 Zone 3 Access to the saw blade below the feed plane (transport device) shall be prevented. This can be achieved e.g. by the following measures: A system of guards (for example a closed machine casing) with a chip pan shall be provided. The chip pan shall be interlocked. The saw blade shall come to a standstill within 4 s after actuation of the interlocking switch of the chip pan (see Figure 1). For requirements relating to the interlocking system of the chip pan, see 5.2.1.2. 5.2.3 Drive system Zone 4 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. 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 system of guards, see 5.2.1.2. !Fixing systems of fixed guards shall remain attached to these guards or to the machine when the guards are removed." 5.3 Electrical hazards 5.3.1 General The electrical equipment shall comply with EN 60204-1 with the following qualifications. 5.3.2 Stopping function of switching devices The stopping function of switching devices shall be in accordance with 9.2.2, category 0 of
!EN 60204-1:2006". Circular saw machines intended for use in a cutting line shall be provided with a means to visually or audibly warn of it ceasing to function under the operation of a safety device, or, shall be fitted with a means capable of interrupting the electrical supply to other elements in the cutting line. Details shall be included in the Information for use. 5.3.3 Emergency stop-device !In general circular 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 SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 15 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 Ingress of water into the external electrical operating components shall be prevented. This can be achieved e.g. by the following measures: the electrical operating components shall be covered by hoods, and,
a statement shall be included in the instruction handbook. NOTE It is not intended that circular saw machines are cleaned with pressurized water. However, it is difficult to guarantee that this method will never be used in practice, and the requirements in this clause are included to reduce electrical risks.
Hoods covering the external operating components may be lifted for actuating ON and OFF switches. Hoods shall not, when closed, restrict the use of the OFF switch (see Figure 9). When using membrane switches or similar systems, no hoods are needed if the membrane switch or similar systems are suitable for cleaning with pressurized water. SIST EN 12267:2003+A1:2010
EN 12267:2003+A1:2010 (E) 16
Key 1 2 3 OFF ON Protection hood (OFF)
Figure 9 — ON /- and OFF switch with hood
5.3.5 ON and OFF-switch On circular saw machines, ON and OFF-switches shall be provided. The switches should be arranged on the operator side of machines (see Figure 1). The ON-switch shall be protected against unintentional switch-on (e.g. by protective collar). 5.3.6 !Safety requirements related to electromagnetic phenomena" !The machines shall have sufficient immunity from electromagnetic disturbances to enable them to operate safely as intended and not fail to danger when exposed to the levels and types of disturbances intended by the manufacturer. The manufacturer of the machine
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