SIST EN 12268:2003
(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 manufacture of band saw machines. The machines covered by this standard are used to cut meat, frozen meat, bone and other foodstuff. The band saw machines covered by this standard are distinct from woodworking band saw machines. The requirements described in prEN 1807 do not apply to the band saw machines described here.
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 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 a ruban - Prescriptions relatives a la sécurité et a l'hygiene
Légende
1 Convoyeur a rouleaux ou convoyeur a bande
Figure 5 - Scie a ruban avec dispositif d'alimentation et d'évacuation des produits
Les scies a ruban sont constituées d'un bâti, d'une table d'alimentation fixe ou coulissante, d'un convoyeur a rouleaux ou d'un convoyeur a bande, d'un poussoir, d'un guide lame ajustable en hauteur, d'un volant supérieur et d'un volant inférieur, d'une lame de scie, d'un guide lame supérieur et inférieur, d'un systeme de tension de la lame, d'un systeme d'entraînement et de composants électriques, selon le type de machine. Le domaine d'application de la présente Norme européenne ne concerne pas les prescriptions relatives aux systemes de chargement/déchargement automatiques, aux convoyeurs, etc.
Pour les scies a ruban posées sur le sol, la matiere a scier est posée manuellement sur la table d'alimentation fixe ou coulissante, puis poussée au moyen du poussoir ou du rebord de la table coulissante ou au moyen du convoyeur a rouleaux ou du convoyeur a bande dans la zone de coupe de la lame de scie et coupée par cette derniere.
Type B :
Scie a ruban ayant une table d'alimentation, un guide lame ajustable et une hauteur de coupe SH telle que : 250 mm * SH < 420 mm.
La distance A entre le sol et la face supérieure de la table d'alimentation est comprise entre 800 mm et 1050 mm.
Plan de pose : sur le sol (voir Figure 3).
Type C :
Scie a ruban ayant une table d'alimentation coulissante, un guide lame ajustable et une hauteur de coupe SH telle que 250 mm * SH < 420 mm.
La distance A entre le sol et la face supérieure de la table d'alimentation coulissante est comprise entre 800 mm et 1050 mm.
Plan de pose : sur le sol (voir Figure 4).
Type D :
Scie a ruban ayant une unité d'alimentation et d'évacuation des produits (par exemple convoyeur a rouleaux, convoyeur a bande) intégrée dans une ligne de coupe, avec une hauteur de coupe SH < 550 mm.
La distance A entre le sol et la surface d'alimentation est comprise entre 800 mm
Stroji za predelavo hrane - Tračne žage - Varnostne in higienske zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12268:2003
01-julij-2003
6WURML]DSUHGHODYRKUDQH7UDþQHåDJH9DUQRVWQHLQKLJLHQVNH]DKWHYH
Food processing machinery - Band saw machines - Safety and hygiene requirements
Nahrungsmittelmaschinen - Bandsägemaschinen - Sicherheits- und
Hygieneanforderungen
Machines pour les produits alimentaires - Scies a ruban - Prescriptions relatives a la
sécurité et a l'hygiene
Ta slovenski standard je istoveten z: EN 12268:2003
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
SIST EN 12268:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 12268
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2003
ICS 67.260
English version
Food processing machinery - Band saw machines - Safety and
hygiene requirements
Machines pour les produits alimentaires - Scies à ruban - Nahrungsmittelmaschinen - Bandsägemaschinen -
Prescriptions relatives à la sécurité et à l'hygiène Sicherheits- und Hygieneanforderungen
This European Standard was approved by CEN on 9 January 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12268:2003 E
worldwide for CEN national Members.
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EN 12268:2003 (E)
Contents
page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .8
3 Terms and definitions.9
4 List of hazards.10
4.1 General.10
4.1.1 Mechanical hazards .10
4.2 Electrical hazards .12
4.3 Hazard from loss of stability.12
4.4 Noise hazard.12
4.5 Hazards from non-compliance with ergonomic principles .12
4.6 Hazards from non-compliance with hygiene principles .12
5 Safety requirements and/or measures .13
5.1 General.13
5.2 Mechanical hazards .13
5.3 Electrical hazards .17
5.4 Hazard from loss of stability.20
5.5 Noise hazard - Noise reduction at the design stage .20
5.6 Ergonomic requirements .20
5.7 Hygiene and cleaning .20
6 Verification of safety requirements and/or measures.22
7 Information for use .23
7.1 General.23
7.1.2 Instruction handbook .23
7.2 Operator training.24
8 Marking .25
Annex A (normative) Noise test code for band saw machines (grade 2) .26
Annex B (normative) Design principles to ensure cleanability of band saw machines .28
Definition.28
Materials of construction .29
Design 29
Annex C (normative) Common hazards for food processing machines and reduction requirements
applicable to band saw machines.33
Annex ZA (informative) Relationship of this document with EC Directives.35
Bibliography .36
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EN 12268:2003 (E)
Foreword
This document (EN 12268:2003) has been prepared by Technical Committee CEN/TC 153 “Food processing
machinery – Safety and hygiene requirements”, 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 October 2003, and conflicting national standards shall be withdrawn at the latest
by October 2003.
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 EC Directives.
For relationship with EC Directives, see informative annex ZA, which is an integral part of this document.
It is one of a series of standards which have been prepared for machines and equipment for meat processing in
compliance with EN 1672-2:1997and annex C and attends to machines, which are attached by Annex IV of
Machinery Directive 89/37 EEC. Band saw machines, which are not fed by hand, do not come under Annex IV.
Annexes A, B and C are normative.
This European Standard also contains a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
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EN 12268:2003 (E)
Introduction
This European Standard covers
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
The extent to which hazards are covered is indicated in this European Standard. For other hazards which are not
covered by this European Standard, machinery should comply with EN 292 where applicable.
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EN 12268:2003 (E)
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
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.
5
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EN 12268:2003 (E)
Key
1 ON / OFF switch 1 ON / OFF switch
2 Product pusher 2 Product pusher
3 Portioning plate 3 Portioning plate
4 Table 4 Base
Figure 1 — 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).
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EN 12268:2003 (E)
Key
1 ON / OFF switch 1 ON / OFF switch
2 Door 2 Door
3 Protective rail / Product pusher 3 Protective rail / Product pusher
4 Feed table 4 Finger protection bar
5 Machine rack 5 Sliding feed table
6 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
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EN 12268:2003 (E)
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.
The intended uses of the machines are described in clause 7.
On floor-type band saw machines, the product to be cut is placed by hand onto the fixed feed table or sliding feed
table and pushed against the cutting zone of the saw blade by means of the product pusher or the rear table wall
on the sliding feed table or by means of the roller conveyor or conveyor belt and sawed.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 292-1, Safety of machinery - Basic concepts, general principles for design - Part 1: Basic terminology,
methodology.
EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles
and specifications.
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 954-1:1996, Safety of machinery - Safety-related parts of control systems - Part 1: General principles for
design.
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 1070:1998, Safety of machinery – Terminology.
EN 1088:1995, Safety of machinery - Interlocking devices associated with guards - Principles for design and
selection.
EN 1672-2:1997, Food processing machinery - Basic concepts - Part 2: Hygiene requirements.
EN 60204-1:1997, Safety of machinery - Electrical equipment of machines - Part 1: General requirements (IEC
60204-1:1997).
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989).
EN 61000-6-1, Electromagnetic compatibility (EMC) - Part 6-1: Generic standards; Immunity for residential,
commercial and light-industrial environments (IEC 61000-6-1:1997, modified).
EN 61000-6-2, Electromagnetic compatibility (EMC) - Part 6-2: Generic standards; Immunity for industrial
environments (IEC 61000-6-2:1999, modified).
8
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EN 12268:2003 (E)
EN 61000-6-3, Electromagnetic compatibility (EMC) - Part 6-3: Generic standards; Emission standard for
residential, commercial and light-industrial environments (IEC 61000-6-3:1996, modified).
EN 61000-6-4, Electromagnetic compatibility (EMC) - Part 6-4: Generic standards; Emission standard for industrial
environments (IEC 61000-6-4:1997, modified).
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).
3 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 1070:1998 and the following
apply (see Figures 1 to 4).
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
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EN 12268:2003 (E)
3.10
cutting height
thickness of product that can be processed by the machines
3.11
table rear wall
device on the sliding feed table to hold the product and to push it towards the cutting zone
3.12
top wheel
pulley wheel for reversing the saw blade above the table
3.13
cutting line
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.
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EN 12268:2003 (E)
Key
1 ZONE 1
2 ZONE 2
3 ZONE 3
4 ZONE 4
5 ZONE 5
6 ZONE 6
7 ZONE 7
Figure 6 — Band saw machine - Danger zones
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.
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EN 12268:2003 (E)
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
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EN 12268:2003 (E)
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 292 for hazards relevant but not
significant, which are not dealt with by this document (e.g. sharp edges).
NOTE For hazards which are to be reduced by the application of another standard such as EN 294, EN 953, EN 1672-2, EN
60204-1, etc. the manufacturer should carry out a risk assessment to establish the requirements of that other standard which
are to be applied. This specific risk assessment is 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.
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 components of the control
system shall comply with 6.2.2, category 1 of EN 954-1:1996.
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.
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EN 12268:2003 (E)
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).
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EN 12268:2003 (E)
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).
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EN 12268:2003 (E)
Key
2 Saw blade 1 Table rear wall
3 Finger protection bar 2 Saw blade
3 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
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:
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EN 12268:2003 (E)
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.
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.
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 60204-1:1997.
5.3.3 Emergency stop-device
The OFF switch shall be easily reachable from the operator position.
NOTE An emergency stop device need not be installed for band saws conforming to this standard.
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,
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EN 12268:2003 (E)
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
...
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