SIST EN 13379:2002
(Main)Pasta processing plants - Spreader, stripping and cutting machine, stick return conveyor, stick magazine - Safety and hygiene requirements
Pasta processing plants - Spreader, stripping and cutting machine, stick return conveyor, stick magazine - Safety and hygiene requirements
This European draft standard specifies the safety requirements for the design, manufacture and information for safe use of spreader, stripping and cutting machine, as well as the stick return conveyor and the stick magazine (see clause 3) used in continuous automatic pasta processing lines.
Maschinen zur Teigwarenherstellung - Behänger, Abstreif- und Schneidmaschinen, Stabrücktransporte, Stabmagazine - Sicherheits- und Hygieneanforderungen
Diese Europäische Norm gilt für Behängevorrichtungen, Abstreif- und Schneidemaschinen sowie für Stabrücktransporter und Stabmagazine (siehe Abschnitt 3), wie sie in kontinuierlichen automatischen Teigherstellungsanlagen, welche mehr als 100 kg/h Teig produzieren können, verwendet werden.
Diese Europäische Norm spezifiziert die Sicherheitsanforderungen für die Gestaltung und Herstellung und gibt Informationen für den sicheren Gebrauch von Behängevorrichtungen, Abstreif- und Schneidemaschinen, Stabrücktransporter und Stabmagazine, die als stationäre Einheiten klassifiziert sind und während des Betriebes nicht bewegt werden können.
Diese europäische Norm gilt nicht für:
- Haushaltsmaschinen
- halbautomatische Maschinen, sogenannte Chargenmaschinen mit manueller Beladung
Die signifikanten von dieser Norm erfassten Gefährdungen sind in Abschnitt 4 aufgeführt.
Diese Gefährdungen sowie die Maßnahmen zu deren Reduzierung sind in dieser europäischen Norm beschrieben.
Zusatzgeräte, die nicht Bestandteil der Anlage sind (z. B. Trichter), werden von dieser europäischen Norm nicht abgedeckt.
Diese europäische Norm gilt nur für Maschinen, die nach dem Datum der Veröffentlichung dieser Norm hergestellt wurden.
Machines pour pâtes alimentaires - Etendeuses, dégarnisseuses-découpeuses, convoyeurs de retour des cannes et accumulateurs de cannes - Prescriptions de sécurité et d'hygiene
1 Domaine d'application
La présente Norme européenne s'applique aux étendeuses, dégarnisseuses-découpeuses, ainsi qu'aux convoyeurs de retour des cannes et accumulateurs de cannes (voir article 3), utilisés dans les installations de production en continu des pâtes alimentaires pouvant produire plus de 100 kg/h.
La présente Norme européenne spécifie les prescriptions de sécurité relatives a la conception, a la fabrication et aux informations pour une utilisation en toute sécurité d'une étendeuse, d'une dégarnisseuse-découpeuse, ainsi que d'un convoyeur de retour des cannes et d'un accumulateur de cannes, classés comme unités fixes et ne pouvant pas etre déplacées lorsqu'elles sont en fonctionnement.
La présente Norme européenne ne s'applique pas :
3 aux machines a usage domestique ;
3 aux machines semi-automatiques, également appelées "machines en discontinu" nécessitant un chargement manuel.
Les phénomenes dangereux significatifs couverts par la présente norme sont énumérés a l'article 4.
Ces phénomenes dangereux, ainsi que les mesures a prendre pour les limiter sont décrits dans la présente Norme européenne.
Les équipements auxiliaires qui ne font pas partie intégrante des machines (par exemple les trémies) ne sont pas couverts par la Présente Norme européenne.
La présente Norme européenne s'applique principalement aux machines fabriquées apres?(date d'approbation par le CEN).
Stroji za izdelavo testenin - Stroji za razvlačenje, valjanje in rezanje, palično povratni tekoči trak, skladišče - Varnostne in higienske zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13379:2002
01-november-2002
6WURML]DL]GHODYRWHVWHQLQ6WURML]DUD]YODþHQMHYDOMDQMHLQUH]DQMHSDOLþQR
SRYUDWQLWHNRþLWUDNVNODGLãþH9DUQRVWQHLQKLJLHQVNH]DKWHYH
Pasta processing plants - Spreader, stripping and cutting machine, stick return conveyor,
stick magazine - Safety and hygiene requirements
Maschinen zur Teigwarenherstellung - Behänger, Abstreif- und Schneidmaschinen,
Stabrücktransporte, Stabmagazine - Sicherheits- und Hygieneanforderungen
Machines pour pâtes alimentaires - Etendeuses, dégarnisseuses-découpeuses,
convoyeurs de retour des cannes et accumulateurs de cannes - Prescriptions de sécurité
et d'hygiene
Ta slovenski standard je istoveten z: EN 13379:2001
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
SIST EN 13379:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13379:2002
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SIST EN 13379:2002
EUROPEAN STANDARD
EN 13379
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 67.260
English version
Pasta processing plants - Spreader, stripping and cutting
machine, stick return conveyor, stick magazine - Safety and
hygiene requirements
Machines pour pâtes alimentaires - Etendeuses, Maschinen zur Teigwarenherstellung - Behänger, Abstreif-
dégarnisseuses-découpeuses, convoyeurs de retour des und Schneidmaschinen, Stabrücktransporte, Stabmagazine
cannes et accumulateurs de cannes - Prescriptions - Sicherheits- und Hygieneanforderungen
relatives à la sécurité et à l'hygiène
This European Standard was approved by CEN on 10 February 2001.
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,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13379:2001 E
worldwide for CEN national Members.
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EN 13379:2001
CONTENTS
FOREWORD . 3
Introduction . 4
1 Scope. 4
2 Normative references . 4
3 Definitions, terminology and description . 6
4 List of hazards. 9
4.1 Mechanical hazards . 9
4.2 Electrical hazards. 11
4.3 Thermal hazard. 11
4.4 Noise hazard . 11
4.5 Hazards due to slip,trip and fall. 11
4.6 Hazard due to neglecting of hygienic principles. 11
4.7 Harmful substance . 11
5 Safety requirements and/or measures. 11
5.1 Mechanical hazards . 11
5.2 Electrical hazards. 14
5.3 Thermal hazard. 15
5.4 Noise reduction . 15
5.5 Protective measures against slip, trip and fall.15
5.6 Protective measures against hazards due to neglecting of hygienic principles . 16
5.7 Harmful substance . 19
6 Verification . 19
6.1 Spreaders. 19
6.2 Stripping and cutting machine. 20
6.3 Stick return conveyor and the stick magazine. 20
7 Information for use (see clause 5 of EN 292-2: 1991). 21
7.1 Technical information. 21
7.2 Indicators. 21
7.3 Marking . 22
Annex A (normative) Principles of design to ensure the cleanability of machinery . 23
A. 1 Terms and definitions . 23
A.2 Material of construction. 23
A.3 Design. 24
Annex B (normative) Noise test code - Grade 2 or 3. 37
B.1 Terms and definitions . 37
B.2 Installation and mounting conditions. 37
B.3 Operating conditions. 37
B.4 Measurements. 37
B.5 Emission sound pressure level determination . 37
B.6 Sound power level determination . 38
B.7 Measurement uncertainties . 38
B.8 Information to be recorded . 38
B.9 Information to be reported . 38
B.10 Declaration and verification of noise emission value. 38
Annex ZA (informative) Relationship of this document with EC Directives . 40
Bibliography . 41
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EN 13379:2001
FOREWORD
This European Standard has been prepared by Technical Committee CEN/TC 153 "Food processing
machinery - Safety and hygiene specifications ", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall
be withdrawn at the latest by October 2001.
It is one of a series of safety standards for machines used in continuous pasta processing plants.
This European Standard 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 Directive(s).
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this standard.
The annexes A and B are normative.
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, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
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EN 13379:2001
Introduction
This European Standard has been prepared to be a harmonized standard providing a means of
conforming with essential safety requirements of the EU "Machinery directive" and associated EFTA
regulations.
This European Standard is a type C standard as stated in EN 1070. The machinery concerned and the
extent to which hazards are covered are indicated in the scope of this standard.
In addition, the machinery shall comply as appropriate with EN 292 for hazards which are not covered
by this European Standard.
The machinery, for which this European Standard applies, can cause certain hazardous situations to
the operators, due to their moving parts, drive components and electrical equipment.
Besides the specific hygiene requirements common to all food processing machinery, spreader,
stripping and cutting machine, stick return conveyor and stick magazine also comply with the
requirements covering cleanability described in the present European Standard
1 Scope
This European Standard applies to spreader, stripping and cutting machine, as well as the stick return
conveyor and the stick magazine (see clause 3), used in continuous pasta processing plants able to
produce more than 100 kg/h.
This European standard specifies the safety requirements for the design, manufacture and information
for safe use of spreader, stripping and cutting machine, as well as the stick return conveyor and the
stick magazine classified as stationary units which cannot be moved when in operation.
This European Standard does not apply to:
- household machines,
- semiautomatic machines, so called "batch machines" requiring manual loading.
The significant hazards covered by this standard are listed in clause 4.
These hazards and the measures for their reduction are described in the present European Standard.
Ancillary equipment, which is not an integral part of the machinery (e.g. hoppers), is not covered by this
European Standard.
This European Standard applies to machines which are manufactured after ….( date of issue of
appoval by CEN) .
2 Normative references
This European Standard incorporates, by dated or undated references, provisions from other
publications. These normative references are cited at the appropriate place in the text and the
publications are listed hereafter. For dated references, subsequent amendments 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 292-1:1991 Safety of machinery - Basic concepts, general principles for design - Part 1:
Basic terminology, methodology
EN 292-2:1999 Safety of machinery - Basic concepts, general principles for design – Part 2:
/A1:1995 Technical principles and specifications
EN 294: 1992 Safety of machinery - Safety distances to prevent danger zones being reached
by the upper limbs
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EN 418 Safety of machinery - Emergency stop equipment, functional aspects -
Principles for design
EN 457 Safety of machinery - Auditory danger signals - General requirements,
design and testing (ISO 7731:1986, modified)
EN 953: 1993 Safety of machinery - General requirements for the design and construction
of guards (fixed, movable)
EN 954-1:1996 Safety of machinery - Safety related parts of control systems - Part 1:
General principles for design
EN 982 Safety of machinery - Safety requirements for fluid power system and
components - Hydraulics
EN 983 Safety of machinery - Safety requirements for fluid power system and
components - Pneumatics
EN 1070 Safety of machinery - Terminology
EN 1088:1995 Safety of machinery - Interlocking devices associated with guards -
Principles and selection for design
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 60529:1991 Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 61496-1:1997 Safety of machinery – Electro-sensitive protective equipment – Part 1:
General requirements and tests (IEC 61496-1:1997)
EN ISO 3744 Acoustics - Determination of sound power levels of noise sources using
sound pressure - Engineering method employing an enveloping
measurement surface in an essentially free field over a reflecting plane
(ISO 3744:1994)
EN ISO 3746 Acoustics - Determination of sound power levels of noise sources - Survey
method using an enveloping measurement surface over a reflecting plane
(ISO 3746:1995)
EN ISO 4871:1996 Acoustics - Declaration and verification of noise emission values of
machinary and equipment (ISO 4871:1996)
EN ISO 9614-1:1995 Acoustics - Determination of sound power levels of noise sources using
sound intensity–Part 1: Measurement at discrete points (ISO 9614-1:1993)
EN ISO 9614-2 Acoustics - Determination of sound power levels of noise sources using
sound intensity–Part 2: Measurement by scanning (ISO 9614-2:1996)
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 (ISO 11204:1995)
prEN ISO 14122-1:1999 Safety of machinery - Permanent means of access to machines and
industrial plants - Part. 1: Choice of a fixed means of access between two
levels
prEN ISO 14122-2:1999 Safety of machinery - Permanent means of access to machines and
industrial plants - Part. 2: Working platforms and gangways
prEN ISO 14122-3:1999 Safety of machinery - Permanent means of access to machines and
industrial plants - Part. 3: Stairways, stepladders and guard-rails
prEN ISO 14122-4:1999 Safety of machinery - Permanent means of access to machines and
industrial plants - Part. 4: Fixed ladders
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EN ISO 11688-1 Acoustics - Recommended practice for the design of low-noise
machinery and equipment - Part 1: Planning (ISO/TR 11688-1:1995)
ISO 468 Surface roughness - Parameter values and general rules for
specifying requirements
IEC 60332-1 Tests on electrical cables under fire conditions – Part 1: Test on a
single vertical insulated wire or cable
3 Definitions, terminology and description
For the use of this European Standard the definitions stated in EN 1070 apply.
Additional definitions specifically needed for this European standard are added below:
3.1
spreader (fig.1)
The spreader is placed between the extruder and the dryer. The dough strings continually discharged
from the extruder, are cut off to a certain length, then placed on the sticks and cut to the required
length on the lower end. Subsequently, the covered sticks are transferred to the dryer. The empty
sticks are taken over by the stick return conveyor and can be heated or treated with edible oil before
they are covered with product anew.
The cut product remnants are usually transported away from the spreader by means of conveyor belts
and are fed to the extruder by means of a pneumatic conveying line. In order to prevent the still wet
product on the sticks sticking together, it is necessary to have venting devices at several spots.
The spreader can also be equipped with a device for introducing or removing the sticks.
3.2
stripping and cutting machine (fig.2)
The stripping and cutting machine is positioned after the cooler or after the stick stacker. The stick with
the dried product are taken over, the product is stripped off the sticks and is cut to the desired length.
The cut product is discharged via oscillating conveyors or conveyor belts and is transferred to the
packaging unit or to a stacker. The cut-off material is in most cases transported away by means of a
pneumatic conveying line. The empty sticks are transferred to the stick return conveyor. Normally, the
stripping and cutting machine comprises also a stick removal device, which takes off the empty sticks
to allow for their cleaning or repair.
3.3
stick return conveyor and stick magazine (fig.3)
The stick return conveyor brings the empty sticks from the stripping and cutting machine back to the
spreader. This device is usually positioned underneath the dryers.
In certain cases one of the functions of this return conveyor is the formation of a stick magazine with
the sticks being transported possibly in several tiers.
A further stick magazine, called intermediate stick magazine, for a small number of product-covered
sticks, can become necessary for plants working without a stick stacker. In this case, the intermediate
stick magazine is placed ahead of the stripping and cutting machine.
Figure 3 shows the arrangement of the return stick conveyor and the stick magazine within a long-
pasta line.
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Figure 1 - Hazard zones at the spreader
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Figure 2 - Hazard zones at the stripping and cutting machine
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Figure 3 - Hazard zones at the return conveyor and stick magazine
3.4
continuous working machine
machine with non-stop product cycle. The pre-formed pasta is fed automatically into the machine and the end-
product is extracted continuously.
3.5
batch machine
machine where the pre-formed pasta is loaded in separate units. The material is fed into the machine
under manual control and the machine is emptied before a new cycle is started.
4 List of hazards
This clause covers all hazards, as far as they are considered in this European Standard, and identified
by risk assessment significant for this type of machinery and requiring an action to eliminate or reduce
risk.
4.1 Mechanical hazards
The significant mechanical hazards are:
- crushing hazard;
- cutting or severance hazard;
- entanglement hazard;
- shearing hazard;
- impact hazard;
The examples shown in figures 1, 2 and 3 illustrate the danger zones associated with these hazards.
4.1.1 Mechanical hazards at the spreader (see fig. 1)
4.1.1.1 Automatic lifting of the inlet hood at the start of production creates, a danger zone at this
location. When the inlet hood is lifted, hands or fingers of operators can get squeezed between the die
and the inlet hood; when the hood is lowered, the danger area is underneath the inlet hood (zone 1).
4.1.1.2 The upper cutter for cutting the extruded product represents one particularly hazardous zone.
For starting production, the inlet hood is pushed out of the way or is removed and the product extrudes
until the discharge is uniform. In this situation, the cutting device may become accessible, which
means that fingers and hands of operators are exposed to risk of injury (zone 2).
4.1.1.3 The lower cutter, which cuts the product on the sticks to equal length also represents an area
which is particularly hazardous. For maintenance and cleaning, there is free access to the cutter,
because the guards have been opened, and there is danger of severe cuts of the fingers and hands
(zone 3).
4.1.1.4 The empty sticks being moved on the front of the machine for spreading with product also
represents an area which is particularly hazardous. There is a risk of injury (pinching) (zone 4).
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4.1.1.5 The conveying belts with the danger of body-parts being drawn-in are further hazard zones
(zone 5).
4.1.1.6 The fans for venting the product can cause injuries, such as finger amputation (zone 6).
4.1.1.7 The shredder fan used for transporting the cut-off material back to the extruder can amputate
fingers or hands during cleaning. In addition to this, the rotor has accumulated kinetic energy , which
can also lead to injuries for a certain time after the machine was shut down (zone 7).
4.1.1.8 The chain transmissions for moving the stick can also cause injuries by pinching and drawing-
in (zone 8).
4.1.2 Mechanical hazards on the stripping and cutting machine (see fig. 2)
4.1.2.1 The cutting device, which usually comprises rotating cutter blades is especially dangerous.
There is a risk of severe laceration.
The energy accumulated in the cutters represents another danger, as the cutters will continue to turn
for a certain time after the machine has been shut down; injuries might result. Another hazard is parts
coming loose from the cutter blade, such as hard metal teeth, which are thrown off and may cause
injuries (zone 1).
4.1.2.2 The stripping and depositing devices represent additional hazard zones. Here, especially the
clamping zones may cause danger of pinching (zone 2).
4.1.2.3 The conveying elements for the stripped off and cut or uncut product, such as chains, belts or
oscillating conveyors, can cause injuries by pinching and drawing-in (zone 3).
4.1.2.4 The chain transmission and possibly the disk cams of the stick drives, as well as of the
stripping device, can cause injuries (pinching) (zone 4).
4.1.2.5 The fan for transporting the remaining product back to the milling device, may cause injuries to
the fingers or hands during cleaning. In addition to this, the rotor has accumulated kinetic energy ,
which can also lead to injuries for a certain time beyond the point where the machine was shut down
(zone 5).
4.1.2.6 The side of the cutting machine where the sticks are introduced is normally attached to
adjacent machines, for instance to the stick stacker. Uncovered openings and channels may offer free
access to the moving parts and thus these may cause injuries by drawing-in and pinching (zone 6).
4.1.2.7 At the stick removal device there is risk of getting injured at the clamping and drawing-in zones
(zone 7).
4.1.3 Mechanical hazards at the stick return conveyor and the stick magazine (see fig. 3)
4.1.3.1 In the stick transfer area and along the conveying elements there is risk of pinching at the
clamping points that may cause injuries (zone 1).
4.1.3.2 Driving elements such as chain transmissions, rotating shafts, and stick transfer points may
cause injuries due to drawing-in and pinching (zone 2).
4.1.3.3 In case of removal and feeding devices of the stick, there is risk of pinching at the clamping
points.
4.1.4 Fluid ejection hazards
Failure of heating pipings under hydraulic pressure and failure of power hydraulic and pneumatic
systems may cause hazard of ejection of fluid which may cause injury (zone 9, fig. 1).
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4.1.5 Hazards due to unexpected start or failure of emergency device
Unexpected start up or failure of emergency device may cause hazard of contact with dangerous moving
parts, with the consequences listed in clause 4.1, 4.2, 4.3.
4.2 Electrical hazards
Hazard of electric shock from direct or indirect contact with live components.This hazard is present in
control consoles, motor connectors, electrical resistances, etc.
Hazard of external influence on electrical components.This hazard is present in running operation of
machinery (e.g. caused by interferences to controlling signal or by cleaning with water or steam).
4.3 Thermal hazard
Risk of burns exists at the spreader in the case of direct contact with stick heating (zone 9, fig. 1).
Furthermore, the high temperatures of heat exchangers for product venting devices, their supply pipes
and fittings may cause burns (zone 10, fig. 1).
4.4 Noise hazard
Noise generated by these machines can lead to
- permanent loss of hearing
- ringing in the ears
- fatigue, stress
- interference with speech communication, acoustic signals.
4.5 Hazards due to slip,trip and fall
Walkways, stairs and gangways may cause slip, trip and fall with danger of broken bones
(zone 8, fig. 2).
4.6 Hazard due to neglecting of hygienic principles
Neglecting of hygienic principles may cause a hazard to human health and unacceptable modification
of foodstuff ( e.g. contamination by microbial growth or foreign materials and pests).
4.7 Harmful substance
The use of a cleaning agent may cause harm to the skin, eyes and respiratory system by direct contact or
by ingestion.
5 Safety requirements and/or measures
Machinery shall comply with the safety requirements and/or measures of this clause.
5.1 Mechanical hazards
Where reference is made to fixed guards throughout clause 5, they shall comply with 3.2 of EN 953:
1997.
Where reference is made to interlocking devices throughout clause 5, they shall comply with EN
1088: 1995 (see 5.1.5.7).
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5.1.1 Spreader
5.1.1.1 In case of motor driven lifting inlet hoods it is necessary to have a hold-to- run control device.
Another possibility of safeguarding is the installation of an optoelectronic protective device.
Clamping points accessible when lowering the hood may either be provided with fixed guards or with
an optoelectronic protective device.
This optoelectronic protective device shall satisfy EN 61496-1:1997 type 4 and EN 954-1: 1996
category 4.
5.1.1.2 Access to the upper cutter shall be prevented by means of fixed guards or movable interlocked
guards in such a way, that access to the cutting tools is not possible while they are in motion.
When removing the inlet hood during start of operation, it shall not be possible to start operation of the
upper cutter.
5.1.1.3 The lower cutter shall not be accessible during operation. Access to the area can either be
prevented by means of fixed guards or movable interlocked guards or by means of an optoelectronic
protective device that shall satisfy EN 61496-1:1997 type 4 and EN 954-1: 1996 category 4.
5.1.1.4 The lateral conveyor chains and sprockets shall be protected by means of fixed guards or
movable interlocked guards.
5.1.1.5 Access to the movable elements, such as chain or belt transmissions, oscillating or rotating
parts of drives shall be prevented by means of fixed guards or movable interlocked guards.
No guards are needed if safety distance are in accordance with table 2 of EN 294:1992.
5.1.1.6 Access to fans shall be protected by fixed guards in accordance with table 4 of EN 294: 1992.
5.1.1.7 During maintenance access to the shredder fan shall be protected by fixed guards. Movable
interlocked guards with guard locking may also be used, however, in this case, it shall be guaranteed
that the rotor of the fan is at standstill, before access is possible.
5.1.1.8 Access to the chain transmissions for moving sticks shall be prevented by means of fixed
guards or movable interlocked guards.
5.1.2 Stripping and cutting machine
5.1.2.1 Access to the rotating cutter blades shall
...
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