SIST EN 454:2001+A1:2010
(Main)Food processing machinery - Planetary mixers - Safety and hygiene requirements
Food processing machinery - Planetary mixers - Safety and hygiene requirements
This standard specifies safety and hygiene requirements for the design and manufacture of fixed bowl planetary mixers of capacity greater than or equal to 5 l 1) and less than 500 l used to process various ingredients e.g. cocoa, flour, sugar, oils and fat, minced meat, eggs, and other ingredients, in the food industry and shops. These machines are sometimes used in other industries (e.g. pharmaceutical industry, chemical industry, printing, etc.), but hazards related to these uses are not considered in this standard. The following machines are excluded: - accessory planetary mixers; - continuously fed machines; - dough mixers 2); - experimental and testing machines under development by the manufacturers; - domestic appliances. The intended use of the machine, as defined in 3.12 of EN 292-1:1991 and in the manufacturer's instruction handbook, is loading various ingredients, processing them in a stationary bowl by means of appropriate beaters, unloading and cleaning. Processing is carried out in cycles of variable duration. It can be either manually or automatically-controlled, in individual cycles or on a cycle repeat basis, etc. Manual operations are sometimes necessary to add ingredients without stopping the beater. The significant hazards covered by this standard are mechanical (shearing, trapping, loss of stability), electrical, thermal, ergonomic and also hazards resulting from gas accumulation, noise, inhalation of dust, and lack of hygiene. The standard applies only to machines manufactured after the date of its issue.
Nahrungsmittelmaschinen - Planetenrühr- und -knetmaschinen - Sicherheits- und Hygieneanforderungen
Machines pour les produits alimentaires - Batteurs-mélangeurs - Prescriptions relatives à la sécurité et l'hygiène
La présente norme spécifie les prescriptions de sécurité et d'hygiène relatives à la conception et à la construction
des batteurs-mélangeurs à cuve fixe de volume égal ou supérieur à 5 l 1) et inférieur à 500 l utilisés pour travailler,
dans l'industrie alimentaire et les commerces de l'alimentation, différents ingrédients comme le cacao, la farine,
le sucre, les huiles et matières grasses, la viande hachée, les oeufs, et autres ingrédients.
Ces machines sont parfois utilisées dans d'autres industries (industrie pharmaceutique, industrie chimique,
imprimerie...), mais les risques relatifs à ces utilisations ne sont pas pris en compte dans cette norme.
Les machines suivantes sont exclues :
- les batteurs-mélangeurs accessoires ;
- les machines travaillant en alimentation continue ;
- les pétrins (EN 453) ;
- les machines expérimentales ou d'essais en cours de mise au point par le fabricant ;
- les appareils à usage domestique.
L'utilisation normale d'une machine, telle que définie en 3.12 de l'EN 292-1:1991 et dans la notice d'instructions
du fabricant, correspond au chargement des divers ingrédients, au travail de ceux-ci dans une cuve fixe à l'aide
d'outils appropriés, au déchargement et au nettoyage.
Le travail s'effectue par cycles de durée variable.
Il peut être manuel ou automatique, par cycles ou répétition de cycles, etc.
Des interventions manuelles sont parfois nécessaires pour rajouter des ingrédients sans arrêter l'outil.
Sur les machines équipées d'un dispositif de monte et baisse de la cuve ou de l'ensemble cuve/tête/outil, la position
de travail correspond à la position où l'outil se trouve le plus près du fond de la cuve.
Les phénomènes dangereux significatifs couverts par la norme sont mécaniques (cisaillement, entraînement,
perte de stabilité), électriques, thermiques, ergonomiques, et aussi ceux résultant de l'accumulation de gaz, du bruit,
de l'inhalation de poussière, du manque d'hygiène.
!texte supprime.
Stroji za predelavo hrane - Planetarni mešalniki - Varnostne in higienske zahteve
Ta standard določa varnostne in higienske zahtevke za načrtovanje in izdelavo planetarnih mešalnikov s stalno posodo prostornine, večjo ali enako 5 l 1) in manj kot 500 l, ki se uporabljajo za obdelavo različnih sestavin, t.j. kakava, moke, sladkorja, olja in maščobe, mletega mesa, jajc in drugih sestavin v prehrambeni industriji in trgovinah. Te stroje se včasih uporablja tudi v drugih industrijah (t.j. farmacevtski industriji, kemični industriji, tiskanje itd.), vendar nevarnosti, povezane s tovrstno uporabo v tem standardu niso upoštevane. Izvzeti so naslednji stroji: - dodatni planetni mešalniki; - stroji z neprekinjenim podajanjem; - mešalniki testa 2); - eksperimentalni in preskusni stroji, ki jih razvijajo proizvajalci; - gospodinjski aparati. Predvidena uporaba stroja, kot je določeno v 3.12 EN 292-1:1991 in podano v proizvajalčevem priročniku z navodili, je nakladanje raznih sestavin, obdelava le-teh v stalni posodi s primernimi stepalniki, razkladanje in čiščenje. Obdelava se izvaja v ciklih z različnim trajanjem. Lahko se ročno ali samodejno upravlja, v posameznih ciklih ali na osnovi ponavljanja ciklov itd. Ročno upravljanje je včasih potrebno za dodajanje sestavin brez ustavitve stepalnika. Velike nevarnosti, zajete z tem standardom, so mehanske (zdrobitev, ureznine, ujetje, udarci in izguba stabilnosti), električne, toplotne, ergonomske in prav tako tiste, ki izhajajo iz kopičenja plina, hrupa, vdihavanja prahu in pomanjkanja higiene. Standard velja samo za stroje, izdelane po datumu objave tega standarda.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 454:2001+A1:2010
01-marec-2010
Stroji za predelavo hrane - Planetarni mešalniki - Varnostne in higienske zahteve
Food processing machinery - Planetary mixers - Safety and hygiene requirements
Nahrungsmittelmaschinen - Planetenrühr- und -knetmaschinen - Sicherheits- und
Hygieneanforderungen
Machines pour les produits alimentaires - Batteurs-mélangeurs - Prescriptions relatives à
la sécurité et l'hygiène
Ta slovenski standard je istoveten z: EN 454:2000+A1:2009
ICS:
67.260 Tovarne in oprema za Plants and equipment for the
živilsko industrijo food industry
SIST EN 454:2001+A1:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 454:2001+A1:2010
---------------------- Page: 2 ----------------------
SIST EN 454:2001+A1:2010
EUROPEAN STANDARD
EN 454:2000+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2009
ICS 67.260 Supersedes EN 454:2000
English Version
Food processing machinery - Planetary mixers - Safety and
hygiene requirements
Machines pour les produits alimentaires - Batteurs- Nahrungsmittelmaschinen - Planetenrühr- und -
mélangeurs - Prescriptions relatives à la sécurité et knetmaschinen - Sicherheits- und Hygieneanforderungen
l'hygiène
This European Standard was approved by CEN on 22 December 1999 and includes Amendment 1 approved by CEN on 24 October 2009.
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, 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
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 454:2000+A1:2009: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Contents Page
Foreword .4
Introduction .5
1 Scope .5
2 Normative references .6
3 Description .7
4 Classification .8
5 List of hazards .8
5.1 Mechanical hazards .9
5.2 Electrical hazards .9
5.3 Thermal hazards . 10
5.4 Hazards generated by gas accumulation . 10
5.5 Hazards generated by noise . 10
5.6 Hazards resulting from inhalation of dust . 10
5.7 Lack of hygiene . 10
5.8 Hazards generated by neglecting ergonomic principles . 10
6 Safety and hygiene requirements and/or measures . 10
6.1 Mechanical hazards . 10
6.2 Electrical hazards . 15
6.3 Thermal hazards . 16
6.4 Gas accumulation hazard . 16
6.5 Noise reduction . 16
6.6 Dust hazard . 16
6.7 Hygiene requirements . 17
6.8 Hazards generated by neglecting ergonomic principles . 18
7 Verification of safety and hygiene requirements and/or measures . 19
8 Information for use . 20
8.1 Marking . 21
8.2 Noise declaration . 21
Annex A (normative) Principles of design to ensure the cleanability of planetary mixers . 22
A.1 Definitions . 22
A.2 Materials of construction . 22
A.3 Design . 23
Annex B (informative) Method of measuring dust . 39
B.1 Purpose of the test . 39
B.2 Principle of the tests . 39
B.3 Operating conditions . 39
Annex C (normative) Noise test code - Grade 2 of accuracy. 40
C.1 Definitions . 40
C.2 Installation and mounting conditions . 41
C.3 Operating conditions . 41
C.4 Measurements . 41
C.5 Emission sound pressure level determination . 42
C.6 Sound power level determination . 42
C.7 Measurement uncertainties . 42
C.8 Information to be recorded . 42
C.9 Information to be reported . 42
2
---------------------- Page: 4 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
C.10 Declaration and verification of noise emission values . 43
Annex D (informative) Bibliography . 44
Annex ZA (informative) !!!!Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37EC"""" . 45
Annex ZB (informative) !!!!Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC"" . 46
""
3
---------------------- Page: 5 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Foreword
This document (EN 454:2000+A1:2009) 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.
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 June 2010, and conflicting national standards shall be withdrawn at
the latest by June 2010.
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 includes Amendment 1 approved by CEN on 24 October 2009.
This document supersedes EN 454:2000.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
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 EU Directive(s).
!For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this
document."
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, 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 the United Kingdom.
4
---------------------- Page: 6 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Introduction
The extent to which hazards are covered is indicated in the scope of this standard. In addition, machinery
shall comply as appropriate with EN 292 for hazards which are not covered by this standard.
1 Scope
This standard specifies safety and hygiene requirements for the design and manufacture of fixed bowl
1)
planetary mixers of capacity greater than or equal to 5 l and less than 500 l used to process various
ingredients e.g. cocoa, flour, sugar, oils and fat, minced meat, eggs, and other ingredients, in the food
industry and shops.
These machines are sometimes used in other industries (e.g. pharmaceutical industry, chemical industry,
printing, etc.), but hazards related to these uses are not considered in this standard.
The following machines are excluded:
accessory planetary mixers;
continuously fed machines;
2)
dough mixers ;
experimental and testing machines under development by the manufacturers;
domestic appliances.
The intended use of the machine, as defined in 3.12 of EN 292-1:1991 and in the manufacturer's instruction
handbook, is loading various ingredients, processing them in a stationary bowl by means of appropriate
beaters, unloading and cleaning.
Processing is carried out in cycles of variable duration.
It can be either manually or automatically-controlled, in individual cycles or on a cycle repeat basis, etc.
Manual operations are sometimes necessary to add ingredients without stopping the beater.
On machines fitted with a bowl lifting and lowering device or with a device for moving the bowl/head/beater
vertically the working position is that when the beater is nearest to the bottom of the bowl.
The significant hazards covered by this standard are mechanical (shearing, trapping, loss of stability),
electrical, thermal, ergonomic and also hazards resulting from gas accumulation, noise, inhalation of dust, and
lack of hygiene.
!deleted text"
The standard applies only to machines manufactured after the date of its issue.
1) Note: Below 5 l, EN 60335-1 and EN 60335-2 are applicable.
2) EN 453.
5
---------------------- Page: 7 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
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.
EN 292-1:1991, Safety of machinery - Basic concepts - General principles for design - Part 1: Basic
terminology, methodology
EN 292-2:1991+A1:1995, Safety of machinery - Basic concepts - General principles for design - Part 2:
Technical principles and specifications
EN 298:1993, Automatic gas burner control systems for gas burners and gas burning appliances with or
without fans
EN 563:1994, Safety of machinery - Temperatures of touchable surfaces - Ergonomics data to establish
temperature limit values for hot surfaces
EN 614-1:1995, Safety of machinery - Ergonomic design principles - Part1: Terminology and general
principles
EN 954-1:1996, Safety of machinery - Safety related parts of control systems - Part 1: General principles for
design
EN 1050:1996, Safety of machinery -Principles for risk assessment
EN 1088:1995, Safety of machinery - Interlocking devices associated with guards - Principles for design and
selection
EN 1672-2:1997, Food processing machinery - Common requirements - Part 2: Hygiene requirements
EN 60204-1:1997, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
EN 60529:1991, Degrees of protection provided by enclosures
EN 60651:1994, Sound level meters
EN ISO 3743-1:1995, Acoustics - Determination of sound levels of noise sources - Engineering methods for
small, movable sources in reverberant fields - Part 1:Comparison method for hard-walled test rooms
EN ISO 3744:1995, Acoustics - Determination of sound power levels of noise sources using sound pressure -
Engineering method in an essentially free field over a reflecting plane
EN ISO 4871:1996, Acoustics - Declaration and verification of noise emission values of machinery and
equipment
EN ISO 11201:1995, Acoustics - Noise emitted by machinery and equipment - Measurement of emission
sound pressure levels at the work station and at other specified positions - Engineering method in an
essentially free field over a reflecting plane
EN ISO 11688-1:1998, Acoustics - Recommended practice for the design of low-noise machinery and
equipment - Part 1: Planning
EN ISO 12001:1996, Acoustics - Noise emitted by machinery and equipment - Rules for the drafting and
presentation of a noise test code
6
---------------------- Page: 8 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
ISO 468:1982, Surface roughness - Parameters values and general rules for specifying requirements
3 Description
A planetary mixer (see figure 1) usually consists of a frame supporting:
a) a casing containing the beater(s) drive mechanism;
b) control devices;
c) a bowl, in which ingredients are processed;
d) interchangeable beaters designed to process ingredients and which move around a fixed or mobile axis
(planetary motion). Their rotation speed may be either constant or variable;
e) a power connection for attachments such as meat mincers, vegetable slicers, etc.;
f) a device for vertically moving the bowl or the head of the mixer to allow beater removal;
g) a device for handling the bowl, for example a trolley.
The following features may also be included:
bowl heating;
bowl cooling;
bowl gravity discharge.
7
---------------------- Page: 9 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Figure 1 a) Figure 1 b)
Figure 1 — Main parts of a planetary mixer (with guard removed) and illustration of bowl diameter
4 Classification
Planetary mixers shall be divided into the following three categories according to their bowl volume and/or
diameter:
class 1 shall have a volume equal to or greater than 5 l and less than 10 l and/or a diameter less than or
equal to 260 mm;
class 2 shall have a volume equal to or greater than 10 l and less than 150 l and/or a diameter greater
than 260 mm and less than or equal to 510 mm;
class 3 shall have a volume greater than or equal to 150 l and less than 500 l and/or a diameter greater
than 510 mm;
Where:
the bowl volume is the maximum volume of water in litres that the bowl can contain;
the bowl diameter is the inside diameter D measured at the bowl upper edge (figure 1).
When a mixer is supplied with several bowls of different capacities, the mixer classification shall be
determined by the size of the bowl with the greatest volume.
5 List of hazards
This clause contains all hazards identified by risk assessment (see EN 1050) as specific and significant for
planetary mixers and which require action to reduce risk.
8
---------------------- Page: 10 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
!When fixed guards, or parts of the machine acting as such, are not permanently fixed e.g. by welding, their
fixing systems shall remain attached to the guards or to the machinery when the guards are removed."
5.1 Mechanical hazards
The significant mechanical hazards are:
shearing hazard;
trapping hazard;
loss of stability.
The example shown in figure 2 illustrates 3 danger zones associated with these hazards:
zone 1:volume covered by the moving beater; hazard of trapping;
zone 2:mechanical power connection for attachments, if any; hazard of shearing, trapping;
zone 3:space between bowl lifting system and frame; hazard of trapping during bowl lifting/lowering.
Figure 2 — Danger zones of a planetary mixer (with guard removed)
5.2 Electrical hazards
Hazard of electric shock from direct or indirect contact with live components.
Hazard of external influences on electrical equipment (e.g. cleaning with water).
9
---------------------- Page: 11 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
5.3 Thermal hazards
Where a bowl heating device is fitted, there is a hazard of burns by contact with the heating device or with the
bowl.
5.4 Hazards generated by gas accumulation
Where open flame heating devices are used as bowl heating, there is a hazard of gas accumulation.
5.5 Hazards generated by noise
Especially class 3 planetary mixers generate airborne noise which can result in hearing damage, in accidents
due to interference with speech communication and interference with the perception of acoustic signals.
5.6 Hazards resulting from inhalation of dust
Because of the larger volume of ingredients processed, the use of class 3 planetary mixers particularly
exposes operators to dust including flour and ingredients which may be harmful to their health, causing rhinitis
(running noses), watering eyes and possibly occupational asthma.
5.7 Lack of hygiene
Lack of hygiene can create a risk to human health and unacceptable modification of foodstuff e.g.
contamination by microbial growth or foreign materials.
5.8 Hazards generated by neglecting ergonomic principles
During operation, cleaning and maintenance, there is a risk of injury or chronic damage to the body resulting
from awkward body postures.
Movement of the bowl between different working stations, or filling or emptying of the bowl can create a risk of
injury or chronic damage to the body from lifting, pushing and pulling of heavy loads.
6 Safety and hygiene requirements and/or measures
This clause states the requirements and/or measures to be met to reduce the effect of the hazards detailed in
clause 5.
6.1 Mechanical hazards
Where reference is made to interlocking devices throughout clause 6, they shall comply with clauses 4.2.1, 5
and 6 of EN 1088:1995.
Safety related control systems shall be category 1 as defined in clause 6 of EN 954-1:1996.
6.1.1 Zone 1 - Volume covered by the movement of the beater
6.1.1.1 Class 1 planetary mixers
Because of their low power and small size, access to the volume covered by the beater need not be
prevented but shall be at least restricted in the following ways:
a) there shall be a minimum distance of 120 mm between the upper edge of the bowl and the upper limit of
the volume covered by the beater (see figure 3 a));
10
---------------------- Page: 12 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
b) a bowl extension shall be provided. This may be fixed or associated with an interlocking device and
movable so that the beater will not operate unless it is in position (see figure 3 b)).
Figure 3 a) Figure 3 b)
Figure 3 — Class 1 planetary mixers
6.1.1.2 Class 2 planetary mixers
A class 2 planetary mixer shall be fitted either with a guard as specified in 6.1.1.3 or with one or more
sensitive bars complying with the following:
the bars shall stop the beater rotation when a vertical upward or downward force of 30 N is applied to
them;
movement to actuate the stopping device shall not exceed 5 mm;
there shall be a minimum distance of 120 mm between the upper limit of the volume covered by the
beater and the upper edge of the bowl;
the distances between the trip bar (or bars), the bowl and the machine frame shall comply with the values
shown in figure 4;
the design of the trip bar shall minimize the risk that the accumulation of food between the trip bar and a
fixed part prevents its operation.
11
---------------------- Page: 13 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Dimensions in millimetres
a < 40 mm
b < 60 mm
c<100 mm
Figure 4 a) Figure 4 b)
Figure 4 — Class 2 planetary mixers with trip bars
6.1.1.3 Class 2 and 3 planetary mixers
A class 2 planetary mixer not fitted with a pressure sensitive bar or a class 3 planetary mixer shall be fitted
with a movable interlocking guard which shall prevent access to the inner volume of the bowl.
As it is necessary to gain access to the bowl for example to add ingredients, guard dimensions shall comply
with the values in figure 5.
12
---------------------- Page: 14 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
Dimensions in millimetres
Figure 5 a) Figure 5 b)
Figure 5 — Class 2 and 3 planetary mixers with interlocking guard
for the bowl of the largest diameter supplied with the machine, the gap between the bowl and the guard
shall not exceed 15 mm;
dimensions l or h are unlimited depending on the type of guard (see figures 5 a) and 5 b)).
6.1.1.4 Mixers with several bowls
Where a mixer is supplied with several bowls, the requirements of 6.1.1.1 to 6.1.1.3, shall be met for the
largest bowl, as applicable. In the working position, all the bowls supplied with a mixer shall have their upper
edges at a level no more than 15 mm below the guard (see figure 6).
13
---------------------- Page: 15 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
1 Largest bowl 2 smallest bowl
Figure 6 — Mixer with several bowls - Class 2 and 3
6.1.1.5 Up and down movement
On class 2 and class 3 machines an interlocking device shall prevent beater movement when the bowl lifting
system is not in the normal operating position e.g. a switch actuated by a cam located inside the frame.
However, if it is necessary to process ingredients in anything other than the normal bowl position, the beater
control shall be of the hold-to-run type (see 3.23.3 of EN 292-1:1991).
The hold-to-run control shall be located following ergonomic principles of EN 614-1:1995 taking account of
hygienic requirements (see 6.6).
6.1.1.6 Stopping time
Guard actuated stopping devices shall stop the beater without any ingredients present in the bowl in less than
or equal to 4 s. If this not possible, opening of the guard shall be prevented until the beater has stopped
moving (see 3.22.5 of EN 292-1:1991).
When a sensitive bar is used, the stopping devices shall stop the beater with the bowl empty in less than or
equal to 2 s.
14
---------------------- Page: 16 ----------------------
SIST EN 454:2001+A1:2010
EN 454:2000+A1:2009 (E)
6.1.2 Zone 2 - Power connection (mechanical)
The drive shaft on which attachments are fitted shall not project from the machine frame and shall be fitted
with a cover which cannot be removed from the machine, e.g. hinged, so as to enclose the connection point.
6.1.3 Zone 3 - Space between bowl lifting system and frame
6.1.3.1 The guide and drive mechanism operating the vertical movement of the bowl shall not create any
risks of trapping or pinching. This may be achieved by use of a fixed guard.
6.1.3.2 When manually operated the minimum distance between either the bowl or the frame and the lever
for lifting and lowering the bowl shall be 50 mm in order to prevent injury when operating the lever.
6.1.3.3 If the bowl lifting and lowering mechanism is motorized, crushing between the ascending bowl, bowl
lifting system and machine frame and any guard shall be prevented. This may be by either:
- a trip device or;
- a hold-to-run control to operate the bowl movement.
6.1.3.4 For class 2 and class 3 machines, the bowl lifting and lowering mechanism shall be able to hold a
vertical force equal to twice the weight of the bowl filled with water, when it is in its upper position.
6.1.4 Loss of stability
Machines shall be designed to be stable and shall comply with 6.1.4.1 to 6.1.4.2 as applicable.
For machines to be fixed to the floor, the instruction handbook shall indicate the values of forces at the fixing
points.
6.1.4.1 Free standing machines without castors shall be stable when tilted 10° from the horizontal plane in
the most unfavourable direction.
6.1.4.2 Free standing machines with castors shall have at least two castors (or sets of castors) fitted with a
locking device, and shall comply with the provisions of 6.1.4.1.
6.2 Electrical hazards
The electrical equipment shall comply with EN 60204-1:1997, with the following precisions.
6.2.1 Electromagnetic compatibility (see 4.4.2 of EN 60204-1:1997)
Where electrical/electronic components are used, the manufacturer shall ensure that the equipment shall not
generate electromagnetic disturbances above the levels that are appropriate for its intended place of use. In
addition, the equipment shall have adequate level of immunity to electromagnetic disturbances so that it can
correctly function in its intended place of use.
NOTE 1 The supplier of the electrical/electronic equipment should be able to detail its electromagnetic compatibility.
NOTE 2 Where conditions of use, installation and maintenance are specified by the supplier in order to achieve
electromagnetic compatibility, these should be complied with by the manufacturer.
6.2.2 Cleaning with water
If it is intended that the machine be cleaned with water, the m
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.