EN 12355:2003+A1:2010
(Main + Amendment)Food processing machinery - Derinding-, skinning- and membrane removal machines - Safety and hygiene requirements
Food processing machinery - Derinding-, skinning- and membrane removal machines - Safety and hygiene requirements
1.1 This European Standard applies to design, manufacturing, installation, transportation, electrical equipment and cleaning of derinding-, skinning-, and membrane removal machines (see Figures 1 to 5).
The machines described in this standard are used for derinding-, skinning- and membrane removal of meat and fish by cutting at a blade device.
Derinding-, skinning-, and membrane removal machines for domestic purposes and table-top machines are not covered by this standard.
This European Standard relates to:
- derinding machines with tooth roll, hold down roller and blade device;
- skinning- and membrane removal machines with transport- and stripper roll as well as a blade device.
This standard only applies to machines which are manufactured after the date of issue of this standard.
1.2 This standard covers the following types of machines:
- Open derinding machines with infeed table and a distance between the floor and the surface of the infeed table from 800 mm to 1 050 mm.
Tooth form of the tooth roll:
Depth < 5,0 mm
Pitch < 6,5 mm
(see Figures 1 and 2)
Key
1
2
3
4
5
Tooth roll/
Transport roll
Blade
Discharge table
Blade holder
Infeed table
6
7
8
9
10
ON/OFF Switch, cover
Foot switch
Drive
Locking device
Table height Key
1
2
3
Round product
Cutting thickness < 5 mm
Infeed table
4
5
6
7
8
Tooth roll
Blade holder
Blade
Rind
Stripper comb
Figure 1 - Derinding-, skinning- and membrane Figure 2 - System of an open derinding machine
removal machine
- Automatic derinding machine with infeed, hold down, and outfeed device and a distance between the floor and the surface of the infeed device, e.g. conveyor belt between 800 mm and 1 050 mm.
Tooth form of the tooth roll:
Depth < 5,0 mm
Pitch < 12,0 mm
Hold down roller diameter 175 mm to 240 mm.
(see Figures 3 and 4)
Nahrungsmittelmaschinen - Entschwartungs-, Enthäutungs- und Entvliesmaschinen - Sicherheits- und Hygieneanforderungen
1.1 1.1 Diese Europäische Norm legt Anforderungen an die Konstruktion, die Herstellung, die Aufstellung, den Transport, die elektrische Anlage und die Reinigung von Entschwartungs-, Enthäutungs- und Entvliesmaschinen (siehe Bilder 1 bis 5) fest.
Die von dieser Norm erfassten Maschinen werden für das Entschwarten, Enthäuten und Entvliesen von Fleisch und Fisch durch Trennen oder Schneiden an einer Messereinrichtung verwendet.
Entschwartungs-, Enthäutungs- und Entvliesmaschinen für den Hausgebrauch und Tischmaschinen werden von dieser Norm nicht abgedeckt.
Diese Norm gilt nur für Maschinen, die nach dem Ausgabedatum dieser Norm hergestellt werden.
1.21.2 Diese Norm umfasst folgende Bauarten von Maschinen:
Offene Entschwartungsmaschinen mit Zuführtisch und einem Abstand zwischen Fußboden und Fläche des Zuführtisches von 800 mm und bis 1050 mm.
Zahnform der Zahnwalze:
Tiefe < 5,0 mm
Teilung < 6,5 mm
(siehe Bilder 1 und 2)
Entschwartungs-, Enthäutungs- und Entvliesmaschinen bestehen hauptsächlich aus Maschinenständer, Zahnwalze mit Abstreiferkamm, Andrückrolle mit Abstreiferrechen, Transportwalze mit Abstreiferwalze und Luftabblaseinrichtung, Messereinrichtung und elektrischen, elektronischen oder pneumatischen Komponenten, abhängig von der Maschinenart.
Entschwartungs-, Enthäutungs- und Entvliesmaschinen können ausgerüstet sein z. B. mit
Zuführ- und Abführtisch;
Zuführ- und Abführtransportbändern;
Messereinrichtung;
Doppelmesser;
Andrückeinrichtung (z. B. Andrückrollen, -bänder oder -finger);
Rundmessern innerhalb oder anstelle von Andrückrollen;
Abstreiferkamm/Abstreiferwalze/Abstreiferrechen.
Entschwartungs-, Enthäutungs- und Entvliesmaschinen können ververfahrbar ausgeführt sein (siehe Bilder 1 und 3).
1.3 1.3 Bestimmungsgemäße Verwendung
Bestimmungsgemäße Verwendung
Die bestimmungsgemäßen Verwendungen der Maschinen sind in Kapitel 7 dieser Norm "Benutzerinformation" beschrieben.
Das zu bearbeitende Produkt (rohes Fleisch
Machines pour les produits alimentaires - Machines à découenner, éplucher et peler - Prescriptions relatives à la sécurité et à l'hygiène
1.1 La présente Norme européenne traite de la conception, la fabrication, l’installation, du transport, des équipements électriques et du nettoyage des machines à découenner, éplucher et peler (voir les Figures 1 à 5).
Les machines décrites dans la présente norme sont utilisées pour découenner, éplucher et peler de la viande et du poisson à l'aide d'un dispositif à lame.
Les machines à découenner, éplucher et peler à usage domestique et les machines de table ne sont pas couvertes par la présente norme.
!La présente Norme européenne concerne :
- les machines à découenner avec rouleau denté, rouleau d'appui et dispositif à lame ;
- les machines à éplucher et à peler avec rouleau d'entraînement et rouleau racleur, également équipées d'un dispositif à lame."
La présente norme s'applique uniquement aux machines fabriquées après sa date de publication.
1.2 La présente norme couvre les types de machines suivants :
- Machines à découenner ouvertes avec plateau d'amenée et dont la distance entre le plancher et la surface du plateau d'amenée se situe entre 800 mm et 1 050 mm.
Stroji za predelavo hrane - Stroji za odstranjevanje kože - Varnostne in higienske zahteve (vključno z dopolnilom A1)
Ta evropski standard velja za načrtovanje, izdelavo, vgradnjo, prevoz, električno opremo in čiščenje strojev za odstranjevanje kože (glej Slike 1 do 5). Stroji, opisani v tem standardu, se uporabljajo za odstranjevanje kože na mesu in ribah z rezalnim pripomočkom. Ta standard ne zajema strojev za odstranjevanje kože za domačo uporabo in namiznih strojev.
Ta evropski standard se nanaša na:
- stroje za odstranjevanje kože z zobatim valjem, zadrževalnim valjem in rezilom;
- stroje za odstranjevanje kože s transportnim in lupilnim valjem ter rezilom. Ta standard velja za stroje, ki so bili izdelani po datumu izdaje tega standarda.
General Information
- Status
- Withdrawn
- Publication Date
- 01-Jun-2010
- Withdrawal Date
- 20-Jan-2026
- Technical Committee
- CEN/TC 153 - Food processing machinery - Safety and hygiene specifications
- Drafting Committee
- CEN/TC 153/WG 2 - Meat processing machinery
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 27-Jul-2022
- Completion Date
- 21-Jan-2026
- Directive
- 98/37/EC - Machinery
Relations
- Effective Date
- 18-Jan-2023
- Effective Date
- 03-Aug-2022
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Frequently Asked Questions
EN 12355:2003+A1:2010 is a standard published by the European Committee for Standardization (CEN). Its full title is "Food processing machinery - Derinding-, skinning- and membrane removal machines - Safety and hygiene requirements". This standard covers: 1.1 This European Standard applies to design, manufacturing, installation, transportation, electrical equipment and cleaning of derinding-, skinning-, and membrane removal machines (see Figures 1 to 5). The machines described in this standard are used for derinding-, skinning- and membrane removal of meat and fish by cutting at a blade device. Derinding-, skinning-, and membrane removal machines for domestic purposes and table-top machines are not covered by this standard. This European Standard relates to: - derinding machines with tooth roll, hold down roller and blade device; - skinning- and membrane removal machines with transport- and stripper roll as well as a blade device. This standard only applies to machines which are manufactured after the date of issue of this standard. 1.2 This standard covers the following types of machines: - Open derinding machines with infeed table and a distance between the floor and the surface of the infeed table from 800 mm to 1 050 mm. Tooth form of the tooth roll: Depth < 5,0 mm Pitch < 6,5 mm (see Figures 1 and 2) Key 1 2 3 4 5 Tooth roll/ Transport roll Blade Discharge table Blade holder Infeed table 6 7 8 9 10 ON/OFF Switch, cover Foot switch Drive Locking device Table height Key 1 2 3 Round product Cutting thickness < 5 mm Infeed table 4 5 6 7 8 Tooth roll Blade holder Blade Rind Stripper comb Figure 1 - Derinding-, skinning- and membrane Figure 2 - System of an open derinding machine removal machine - Automatic derinding machine with infeed, hold down, and outfeed device and a distance between the floor and the surface of the infeed device, e.g. conveyor belt between 800 mm and 1 050 mm. Tooth form of the tooth roll: Depth < 5,0 mm Pitch < 12,0 mm Hold down roller diameter 175 mm to 240 mm. (see Figures 3 and 4)
1.1 This European Standard applies to design, manufacturing, installation, transportation, electrical equipment and cleaning of derinding-, skinning-, and membrane removal machines (see Figures 1 to 5). The machines described in this standard are used for derinding-, skinning- and membrane removal of meat and fish by cutting at a blade device. Derinding-, skinning-, and membrane removal machines for domestic purposes and table-top machines are not covered by this standard. This European Standard relates to: - derinding machines with tooth roll, hold down roller and blade device; - skinning- and membrane removal machines with transport- and stripper roll as well as a blade device. This standard only applies to machines which are manufactured after the date of issue of this standard. 1.2 This standard covers the following types of machines: - Open derinding machines with infeed table and a distance between the floor and the surface of the infeed table from 800 mm to 1 050 mm. Tooth form of the tooth roll: Depth < 5,0 mm Pitch < 6,5 mm (see Figures 1 and 2) Key 1 2 3 4 5 Tooth roll/ Transport roll Blade Discharge table Blade holder Infeed table 6 7 8 9 10 ON/OFF Switch, cover Foot switch Drive Locking device Table height Key 1 2 3 Round product Cutting thickness < 5 mm Infeed table 4 5 6 7 8 Tooth roll Blade holder Blade Rind Stripper comb Figure 1 - Derinding-, skinning- and membrane Figure 2 - System of an open derinding machine removal machine - Automatic derinding machine with infeed, hold down, and outfeed device and a distance between the floor and the surface of the infeed device, e.g. conveyor belt between 800 mm and 1 050 mm. Tooth form of the tooth roll: Depth < 5,0 mm Pitch < 12,0 mm Hold down roller diameter 175 mm to 240 mm. (see Figures 3 and 4)
EN 12355:2003+A1:2010 is classified under the following ICS (International Classification for Standards) categories: 67.260 - Plants and equipment for the food industry. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12355:2003+A1:2010 has the following relationships with other standards: It is inter standard links to EN 12355:2003, EN 12355:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12355:2003+A1:2010 is associated with the following European legislation: EU Directives/Regulations: 2006/42/EC, 98/37/EC; Standardization Mandates: M/396. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12355:2003+A1:2010 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nahrungsmittelmaschinen - Entschwartungs-, Enthäutungs- und Entvliesmaschinen - Sicherheits- und HygieneanforderungenMachines pour les produits alimentaires - Machines à découenner, éplucher et peler - Prescriptions relatives à la sécurité et à l'hygièneFood processing machinery - Derinding-, skinning- and membrane removal machines - Safety and hygiene requirements67.260Tovarne in oprema za živilsko industrijoPlants and equipment for the food industryICS:Ta slovenski standard je istoveten z:EN 12355:2003+A1:2010SIST EN 12355:2003+A1:2010en,fr,de01-oktober-2010SIST EN 12355:2003+A1:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12355:2003+A1
June 2010 ICS 67.260 Supersedes EN 12355:2003English Version
Food processing machinery - Derinding-, skinning- and membrane removal machines - Safety and hygiene requirements
Machines pour les produits alimentaires - Machines à découenner, éplucher et peler - Prescriptions relatives à la sécurité et à l'hygiène
Nahrungsmittelmaschinen - Entschwartungs-, Enthäutungs-und Entvliesmaschinen - Sicherheits- und Hygieneanforderungen This European Standard was approved by CEN on 21 November 2002 and includes Amendment 1 approved by CEN on 30 April 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12355:2003+A1:2010: ESIST EN 12355:2003+A1:2010
Noise test code for derinding-, skinning- and membrane removal machines (grade 2) . 37SIST EN 12355:2003+A1:2010
Design principles to ensure the cleanability of derinding-, skinning- and membrane removal machines . 39Annex C (normative)
Common hazards for food processing machines and reduction requirements applicable to derinding-, skinning- and membrane removal machines . 45Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 47Bibliography . 48
< 5,0 mm Pitch < 6,5 mm (see Figures 1 and 2) SIST EN 12355:2003+A1:2010
Key 1
2 3 4 5
Tooth roll/ Transport roll Blade Discharge table Blade holder Infeed table
9 10
ON/OFF Switch, cover Foot switch Drive Locking device Table height Key
Round product Cutting thickness < 5 mm Infeed table
4 5 6 7 8
Tooth roll Blade holder Blade Rind Stripper comb Figure 1 — Derinding-, skinning- and membrane
Figure 2 — System of an open derinding machine
removal machine Automatic derinding machine with infeed, hold down, and outfeed device and a distance between the floor and the surface of the infeed device, e.g. conveyor belt between 800 mm and 1 050 mm. Tooth form of the tooth roll: Depth
<
5,0 mm Pitch
<
12,0 mm Hold down roller diameter 175 mm to 240 mm. (see Figures 3 and 4) SIST EN 12355:2003+A1:2010
Key 1 2 3 4
Outfeed conveyor belt Mobile guard Hold-down rollers Blade holder
5 6 7 8
Blade Tooth or conveyor roll Infeed conveyor Drive Key1 2 3 4
Hold-down rollers Infeed conveyor belt Product Tooth or conveyor roll
6 7 8
Stripper comb or stripper roll Blade Blade holder Outfeed conveyor
Figure 3 — Automatic Derinding- and membrane removal machine Figure 4 — System of an automatic derinding- and membrane machine
Open skinning- and membrane removal machine with infeed table and a distance between the floor and the surface of the infeed table between 800 mm and 1 050 mm. Groove form of the transport roller: Depth
< 2,0 mm Pitch < 2,5 mm (see Figures 1 and 5)
Key 1 2 3
Infeed table Product Cutting Thickness < 0,5 mm Blade
5 6 7 8
Blade holder Membrane Transport roll Stripper roll Figure 5 — System of a membrane removal machine Derinding-, skinning- and membrane removal machines consist mainly of a machine frame, tooth roll with stripper comb, hold down roller with stripper rake, transport roll with stripper roll and air jet cleaning blade device and electrical, electronic, or pneumatic components, depending on the machine type. Derinding-, skinning- and membrane removal machines can e.g. be equipped with a: infeed and outfeed table; infeed- and outfeed conveyor belts; blade device; double blade; hold down device, (e.g. hold down rollers, belts or fingers); circular knives inside or instead of hold down rollers; stripper comb/stripper roll/stripper rake. Derinding-, skinning- and membrane removal machines can be mobile (see Figures 1 and 3). 1.3 Intended use !This European Standard deals with all significant hazards, hazardous situations and events relevant to derinding-, skinning- and membrane removal 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." SIST EN 12355:2003+A1:2010
(IEC 60204-1:2005, modified) EN 61000-6-1, Electromagnetic compatibility (EMC) — Part 6-1: Generic standards; Immunity for residential, commercial and light-industrial environments (IEC 61000-6-1:2005) EN 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards; Immunity for industrial environments (IEC 61000-6-2:2005) EN 61000-6-3, Electromagnetic compatibility (EMC) — Part 6-3: Generic standards; Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-3:2006) SIST EN 12355:2003+A1:2010
products 3.18 infeed and outfeed table table surface for the feeding or removal of product by hand SIST EN 12355:2003+A1:2010
(see Figure 7). Hazards of separation of skin or fingers, hand or lower arm being drawn in. Zone 2 Rotating hold down- rollers or -fingers and protective cover (see Figure 7). Hazards of fingers or hand being drawn in. Zone 3 Rotating tooth roll/conveyor roll and stripper comb/stripper roll (see Figure 7). SIST EN 12355:2003+A1:2010
fingers or hand being drawn in crushing. Zone 6 Rotating circular blade (see Figure 7). Hazards of cutting fingers or hand. Zone 7 Machine components Unintended closure of guard covers Hazards of crushing of the hand
Key 1 2 3
Zone 1 Zone 2 Zone 3 Key1 2 3 4
Zone 1 Zone 2 Zone 3 Zone 4
5 6 7
Zone 5 Zone 6 (circular blade) Zone 7
Figure 6 — Open derinding machine
Figure 7 — Automatic derinding and membrane
- danger zones
removal machine- danger zones
Key 1 2 3
Zone 1 Zone 2 Zone 3 Figure 8 — Open skinning and membrane removal machine - danger zones 4.2.4 Drive system Zone 8 Tooth roll, transport roll/stripper and hold down device drive systems. Hazards of fingers or hand being crushed. SIST EN 12355:2003+A1:2010
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 derinding-, skinning- or membrane removal machines, 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 Derinding-, skinning- and membrane removal machines shall be designed and constructed in accordance with
annex C and to the requirements mentioned below. !The interlocking systems of safety devices shall be in accordance to 4.2.1 of EN 1088:2005 and the safety related parts of the control system shall present at least a performance level “c” defined in accordance with
EN ISO 13849-1:2008." Additionally locking devices shall be: for fulfilment the hygiene requirements; for protection against mechanical damages; for protection against influence of cleaning and disinfection detergents; for protection against influence of cleaning liquids (water); for protection against evading in a simple way built in the machine housing and correspond to 5.7 of EN 1088:1995. In the Information for use the manufacturer shall give information on the daily verification of the locking device. 5.2.1 Open derinding machine with infeed table 5.2.1.1 Zone 1 The access to the cutting area and gap between the rotating tooth roll and height adjustable blade holder with blade shall be restricted. This can be achieved e.g. by observance of the following measures: SIST EN 12355:2003+A1:2010
Figure 9 — Blade designs for defined position 5.2.1.1.3 The free part of the tooth roll between knife and front edge of the table is not allowed to be more than 35° of the circumference of the roll for a table height between 800 mm and 1 050 mm. In the case of exceptionally tall round products (e.g. ham) there can be used an infeed table which permits a free part of the tooth roll not more than 90° for a table height > 800 mm. 5.2.1.1.4 The operation switch for the drive system of the tooth roll shall be a hold-to-run control. The tooth roll shall stop within 2 s, after the operator has released the operating switch (see 5.3.1). The operating switch can, for example, be foot, knee or belly operated and shall be protected against unintentional actuation. 5.2.1.1.5 Normal positioning of machines The access to open derinding machines shall be prevented, except the operator side. This will be achieved e.g. by the following measures: normal positioning of a machine in a small working area An open derinding machine shall be positioned with one side towards a wall. The table and a container shall be placed on the other free sides to receive the round products (see Figures 10 and paragraph 7.1a). The operator stands in front of the open derinding machine. By this way of positioning access to the open derinding machine is prevented for other persons. normal machine positioning in working area with cutting line An open derinding machine shall be positioned with one side against the cutting line. The table and a container will be placed on the other free sides in order to receive the round products (see Figure 11 and paragraph 7.1a). The operator stands in front of the open derinding machine. By this way of positioning access to the open derinding machine is prevented for other persons. SIST EN 12355:2003+A1:2010
Key Key 1 2 3 Table or container Open derinding machines Cutting wall 1 2 3 Table or container Open derinding machines Cutting line
Figure 10 — Open derinding machine in a smaller working area Figure11—Open derinding machine on a cutting line
5.2.1.1.6 Further possibility of positioning The access to the tooth roll by third party personnel shall be prevented at a free standing, open derinding machine by a fixed guard, e.g. guarding fence (see Figure 12). The dimensions of the guardings shall be in accordance with EN 294. SIST EN 12355:2003+A1:2010
Figure 12 — Example of guard preventing access to the tooth roll by third party personnel at rear or sides 5.2.1.1.7 Normal operating conditions Only round products (e.g. pickled knuckle of pork or ham) shall be processed on open derinding machines
(see 5.2.1.1.10). Flat products (e.g. fatbacks) shall only be used in conjunction with automatic derinding machines (see 5.2.2). 5.2.1.1.8 Wearing of protective gloves When operating an open derinding machine, the operator shall only wear manufacturer approved protective gloves. Metal wire mesh gloves, or metal wire reinforced gloves shall not be worn (see 7.1.d). On open derinding machines a permanently fixed notification shall be present, with the following text: “Attention: Do not wear metal wire mesh gloves or metal wire reinforced gloves”. 5.2.1.1.9 Operator training The manufacturer shall devise safe working procedures to be followed by operators.
These shall be included in the instructions for use (see 5.2.1.1.10), together with the elements of training and frequency of retraining to be given to the operators.5.2.1.1.10 Information in the instruction handbook. 5.2.1.1.10 The manufacturer shall in the instruction handbook describe clearly: processing of tall, round products ( 5.2.1.1.3); the normal positioning of machines in small working areas ( 5.2.1.1.5, paragraph 1); the normal machine positioning in working areas with cutting line (5.2.1.1.5, paragraph 2); further possibility of machine positioning (5.2.1.1.6); normal operating conditions on open derinding machines (5.2.1.1.7); wearing of protective gloves (5.2.1.1.8); SIST EN 12355:2003+A1:2010
see 5.2.
Key 1 2 Tooth roll Stripper comb 1 2 3 Tooth roll Stripper comb Protective bar
Figure 13 — Open derinding machine tooth roll with stripper comb Figure14—Open derinding machine, tooth roll with protective bar
5.2.1.3 - Zone 3 The access to the inrunning nip between rotating tooth roll and fixed machine parts shall be prevented. This can be achieved e.g. by the following measures: 5.2.1.3.1 The distance between a rotating tooth roll and a fixed machine part shall be > 80 mm (see Figure 13). 5.2.1.3.2 Shorter distances shall be guarded by a protective bar. The angle shall be > 90° and the distance between protective bar and tooth roll shall be < 2,0 mm (see Figure 14). 5.2.1.4 - Zone 4 When using a double blade above the blade holder, the double blade shall not form an inrunning nip with the tooth roll. This will be achieved, if the stand out of the knife tips is > 2 mm (see Figure 15). SIST EN 12355:2003+A1:2010
Key 1
Double blade 2
Blade holder Figure 15 — Location of a double blade relative to the blade holder 5.2.2 Automatic derinding- and membrane removal machine 5.2.2.1 - Zone 1 The access to the cutting edge and inrunning nip between the rotating tooth/transportation roll, adjustable height blade holder with blade and rotating hold down rollers/hold down finger rollers shall be restricted. This can be achieved e.g. by observance of the following measures: 5.2.2.1.1 At the infeed side: the product shall be fed to the tooth/transportation roll and the hold down rollers/hold down finger rollers by means of a conveyor belt; there shall be a guard (e.g. tunnel shaped cover); the cover shall be movable and interlocked (see Figure 16); a fixed cover shall be provided
and the upper edge of the infeed opening shall be provided with a trip device (e.g. trip bar or light barrier) (see Figure 17).
Key
Key 1 Mobile guard 2 3 4 Fixed cover Trip bar Light sensor
Figure 16 — Mobile interlocked guard withinterlocking switch with a fixed cover
Figure 17 — Fixed cover with trip bar / light sensor The tunnel shaped guard shall continue into the guard over the hold down rollers / hold down finger rollers
(see Figure 18); The tunnel-shaped guard by itself or in combination with light barrier (ESPE electro-sensitive protection equipment) over the infeed device shall meet to the following dimensions in Table 1 (see Figure 18); The length of the fixed part of the guard shall be > 200 mm by using a light barrier (see Figure 19). Table 1 — Relation of opening height B and C to distance A from the inrunning up (Dimensions in millimetres) A > 230 450 550 A
=
Distance to inrunning nip B < 40 95 125 B
=
Opening height including control distance at the front
edge of the guard or trip bar C < 50 125 155 C
=
Opening height of the guard in
combination with one or more light barriers
Key Key 1 2 3 Product Stripper rake
Fixed bar 1 2 3 Light barriers Product Fixed bar
Figure 18 — Automatic derinding machine - safety measures at the infeed
Figure 19 — Automatic derinding machine - safety measures at the infeed and outfeed
- Zone 4 The access to the inrunning nip between the rotating tooth roll and fixed machine parts shall be prevented. This can be achieved e.g. by observance of the following measures: Safety requirements see 5.2.1.3, Zone 3. 5.2.2.5
- Zone 5 The access to the inrunning nips between conveyor and drive and return rollers shall be prevented. This can be achieved e.g. by observance of the following measures: At the inrunning nip points between the conveyor and the drive and return rollers a fixed guard (e.g. side covers) shall be provided. 5.2.2.6 - Zone 6 The access to the cutting edges of the circular blades at the outfeed side shall be restricted. This can be achieved e.g. by observance of the following measures: the product shall be carried away from the rotating circular blades by means of a conveyor belt and be provided with a guard (e.g. tunnel-shaped cover); the cover shall be movable and interlocked see Figure 16); if a fixed cover is used, the upper edge of the outfeed opening shall be provided
with a trip device (e.g. trip bar or light barrier) (see Figure 17); the dimensions of the cover shall meet the measures of Table 1 (see 5.3.1.1.1); requirements for the interlocking of the movable guard and trip device, see 5.2. The light barrier shall be ESPE type 2, according to !EN 61496-1:2004". SIST EN 12355:2003+A1:2010
< 0,5 mm. 5.2.4.1.2 The blade and the blade holder shall be designed such that the blade can only be placed in a defined position (see Figures 5 and 9). 5.2.4.1.3 At the circumference of the rotating transport roller the point to point distance of the tooth grooves shall be
< 2,5 mm and the groove depth < 2,0 mm. The grooves shall not have circumferential passes (see Figure 20). SIST EN 12355:2003+A1:2010
Key
2 Transport roll without grooves Transport roll with grooves
Figure 20 — Membrane removal machine - safety measures of the transport roll 5.2.4.1.4 The operation switch for the drive of the transport roller shall be a hold-to-run control device. The transport roller shall stop not later than 2 s, after the operator has stopped to actuate the operation switch (see 5.3.1). This switch can be e.g. foot, knee or belly operated and shall be protected against unintentional actuation. 5.2.4.1.5 Safety requirements: for the normal machine installation in a small working area (see 5.2.1.1.5, paragraph 2 and Figure 10) for the normal machine installation in a working area with a cutting line (see 5.2.1.1.5, paragraph 2 and
Figure 11) for further installation (see 5.2.1.1.6 and Figure 12) 5.2.4.1.6 Normal operating conditions Open membrane removal machines shall only be used in conjunction with the removal of skin or membrane from flat and round products. 5.2.4.1.7 Wearing of protective gloves When operating an open membrane removal machine, the operator shall only wear manufacturer approved protective gloves. Metal wire mesh gloves, or metal wire reinforced gloves shall not be worn (see 7.1.d). On open membrane removal machines a permanently fixed notification shall be present, with the following text: “Attention: Do not wear metal wire mesh gloves or metal wire reinforced gloves”. SIST EN 12355:2003+A1:2010
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