Bsi bs en 01678 1998 + a1 2010

Food processing machinery ÐVegetable cutting machines Ð Safety and hygiene requirements... NORME EUROPÉENNE English Version Food processing machinery - Vegetable cutting machines - Safe

Food processing machinery Ð

Vegetable cutting machines Ð

Safety and hygiene

requirements

National foreword

This British Standard is the UK implementation of

EN 1678:1998+A1:2010 It supersedes BS EN 1678:1998 which is withdrawn

The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered

by CEN amendment A1 is indicated by !"

The UK participation in its preparation was entrusted by Technical Committee MCE/3, Safeguarding of machinery, to Subcommittee MCE/3/5, Food industry machines

A list of organizations represented on this subcommittee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard, having

been prepared under the

direction of the Engineering

Sector Board, was published

under the authority of the

Standards Board and comes into

NORME EUROPÉENNE

English Version

Food processing machinery - Vegetable cutting machines -

Safety and hygiene requirements

Machines pour les produits alimentaires Coupelégumes

-Prescriptions relatives à la sécurité et à l'hygiène

Nahrungsmittelmaschinen - Gemüseschneidemaschinen - Sicherheits- und Hygieneanforderungen

This European Standard was approved by CEN on 28 February 1998 and includes Amendment 1 approved by CEN on 9 April 2010 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

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 1678:1998+A1:2010: E

Contents

Foreword 3



Introduction 4



1





2





3





3.1





3.2





4





4.1





4.2





4.3





4.4





4.5





5





5.1





5.2





5.3





5.4





5.5





6





7





7.1





7.2





7.3





Annex A (normative) Noise test code for vegetable cutting machines (Grade 2 of accuracy) 24



Annex B (normative) Principles of design to ensure the cleanability of vegetable cutting machines 26



Annex C (normative) Probes for specific tests 45



Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" 48



!Bibliography 49



Foreword

!This document (EN 1678:1998+A1:2010) has been prepared by Technical Committee CEN/TC 153

“Machinery intended for use with foodstuffs and feed”, the secretariat of which is held by DIN."

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn

at the latest by November 2010

This document includes Amendment 1, approved by CEN on 2010-04-09

This document supersedes EN 1678:1998

The start and finish of text introduced or altered by amendment is indicated in the text by tags!"͘

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights

It is one of a series of standards on the design and construction of machines used in catering

!This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s)

For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document." According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

Introduction

The use of vegetable cutting machines involves various mechanical and other hazards

Their extensive use justifies the need of a standard covering both safety and the hazards to food hygiene arising from machine design

!This European Standard is a type C standard as stated in EN ISO 12100

The machinery concerned and the extend to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard

When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard."

1 Scope

!

1.1 This European Standard specifies the safety and hygiene requirements for the design and manufacture

of vegetable cutting machines which are transportable and have a maximum rated power less than 3 kW This European Standard deals with machines intended for cutting, shredding, dicing, chipping and grating of food products in which the product passes through the machine

As described in 3.2.1, the types of machines in the scope are machines with a fixed chamber and rotating blade or cutting disc, with a rotating drum and fixed blades or machines with horizontal reciprocating cutters (mainly used for potato chipping)

1.2 This European Standard specifies all significant hazards, hazardous situations and events relevant to vegetable cutting 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, removal of food blockages, feeding, changing the tools, maintenance and decommissioning of the machine

1.3 This European Standard does not apply to:

 food processors (see EN 12852);

 vegetable peelers (see EN 13208);

 vegetable cutting attachments which are mounted onto machines having an auxiliary drive hub (see

EN 12851);

 planetary mixers (see EN 454);

 domestic machines

2 !Normative references

The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general

EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements

EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements

(IEC 60204:2005, modified)

EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)

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 (ISO 3744:1994)

EN ISO 4287:1998, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms,

definitions and surface texture parameters (ISO 4287:1997)

EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and

equipment (ISO 4871:1996)

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 (ISO 11201:1995)

EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic

terminology, methodology (ISO 12100-1:2003)

EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2:

Technical principles and specifications (ISO 12100-2:2003)

EN ISO 13849-1:2008, Safety of machinery — Safety related parts of control systems — Part 1: General

principles for design (ISO 13849-1:2006)

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent danger zones being reached by

upper and lower limbs (ISO 13857:2008)"

3 !Terms and definitions – Description

3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply

3.2.1 Machines covered by the standard

This standard covers the three following types of machine including combinations of them:

3.2.1.1 Machines with rotating cutting devices

Such machines contain the rotating cutting devices in a fixed chamber Product is fed into the top of the chamber, typically through a feed hopper and assisted by a pusher or plunger device (see figure 1)

3.2.1.2 Machines with rotary drum

These machines generally have a hopper method of feeding product to a rotating drum As the product is held against the outside wall by the spinning drum so it comes into contact with a fixed cutting device (see figure 2)

These machines are used extensively for chipping potatoes Raw potatoes are fed from a hopper into the cutting chamber containing fixed plates and reciprocating plates and cutting devices (see figure 3)

All machines generally contain the following elements of design:

 a device for feeding product into the machine;

 one or several tools: cutting plates or blades, hereafter called "cutting devices" A cutting plate or blade consists of one or more cutting edges fixed to a frame Fixed cutting blades may be installed in conjunction with moving plates;

 an ejector;

 a delivery chute;

 control devices

3.2.3 Devices for feeding

Three devices for feeding product are used:

3.2.3.1 Hopper feed

This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with

in this European Standard, identified by risk assessment as significant for this type of machinery, and which require action to eliminate or reduce the risk."

4.2 Mechanical hazards

4.2.1 Access to the danger zones

Mechanical hazards arise from the risk of contact with the cutting devices and the associated rotating parts The hazards may be reached by:

 Zone 1: access down the feed chute/hopper;

Hazard of cutting and drawing-in,

 Zone 2: access when opening the machine to expose the cutter or drum Typically this is when cleaning the machine or changing the cutting device

Hazard of cutting and drawing-in;

 Zone 3: access through the delivery chute;

Hazard of crushing and drawing-in;

 Zone 4: access to the driving mechanism;

Hazard of crushing and drawing-in

4.2.2 Loss of stability

Hazards of crushing and impact

4.2.3 Incorrect assembly and fitting

Hazard of cutting and impact for fingers or hands

4.2.4 Handling, cleaning and storage of cutting devices

Hazard of cutting and impact

4.3 Electrical hazards

Hazard of shock by direct or indirect contact with live parts

4.4 Hazards generated by neglecting hygiene principles in the machine design

Inability to clean food contact and splash areas effectively and thoroughly

Contamination of the food by undesirable materials including residues of food, microbiological causes as well

as residues of cleaning and disinfecting fluids

4.5 Hazards generated by neglecting ergonomic principles in machine design

Lack of ergonomic principles can be anything that causes wrong operation of controls, physical damage due

to over-reaching, heavy loads, awkward posture, etc

!deleted text"

5 Safety and hygiene requirements and/or measures

5.1 !General

Machinery shall comply with the safety requirements and/or protective measures of this clause

In addition, the machine shall be designed according to the principles of EN ISO 12100-2 for relevant but not significant hazards, which are not dealt with by this document

For hazards which are to be reduced by the application of the type B-standards such as EN 614-1, EN 953,

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."

5.2 Mechanical hazards

5.2.1 !General

All the interlocking devices associated with guards shall comply with EN 1088:1995

The safety related parts of the control systems shall meet at least performance level c and category 1 in accordance with EN ISO 13849-1:2008

NOTE The category 1 in accordance with EN ISO 13849-1:2008 is equivalent to category 1 of EN 954-1:1996."

5.2.2 Access to the danger zones

!See also 5.2.2.1.4."

Nevertheless, in order to comply with particular specificities of use, like:

 dimensions and diversity of food products to be processed (vegetable, fruits,…);

 height of loading and of discharge chute;

 ratio performance/compactness;

 cleanability;

and taking into account risk assessment, one of the solutions !given in 5.2.2.1.3 and 5.2.2.1.4" shall be taken

5.2.2.1.3 Feeding by plunger or pusher

The dimensions of the feed chute shall conform to the table 1:

Table 1

Dimensions in millimetres

Maximum dimension of the

opening of feed tube

(b)

Safety reach distance between the edge of the hopper and the blade

(a) For cutting gap depth

Figure 4 5.2.2.1.3.1 In all cases where b is less than or equal to 80 mm and where the table 1 is used:

 A plunger shall be supplied, with all machines having a feed tube;

 Where machines are not dedicated to be used with cutting devices the height of which is greater than

10 mm, a notice in the instruction handbook shall be given

5.2.2.1.3.2 For the case where b > 80 mm machines shall have an interlocking control guard pusher

device, the interlocking switch shall be designed to meet the opening and closing and stopping time required

The safety interlocked switch shall be actuated when the gap (x) between the top of the aperture and the edge

of the pusher is as shown in figure 5, where:

x ≤ 60 mm for a ≥ 150 mm

x ≤ 45 mm for 130 mm ≤ a < 150 mm

!Designs which comply with 5.2 and 5.3 of EN ISO 12100-2:2003 and 4.2.3 of EN ISO 13857:2008 can be used, for example (see Figure 6):"

 baffles;

 sloping hopper;

 swan neck extension;

!

 fixed grids (opening to Table 4 of EN ISO 13857:2008);"

 interlocked hopper lid;

5.2.2.2 Zone 2

If the access is by control guard pusher device !(see 5.2.2.1.3)" the stopping time shall be less than 2 s The parts giving rise to the mechanical hazard shall come to a complete stop within 4 s, of the access covers and/or hopper being opened sufficiently to actuate the interlocked switch

The parts giving access to the dangerous tools shall be interlocked !(see 5.2.1)" The opening of these parts shall stop the machine within 4 s

5.2.2.3 Zone 3

The hazard shall be eliminated by design This shall be achieved for rotating disc machines by contouring the underside of the cutter device or ejector plate such that the only contact would be with a smooth surface or one which would tend to deflect the fingers away from the area of the blade or other hazard (see figure 7) The deflector ridge shall have a radiused end to eliminate any trap between it and the machine casing

Key

1 Blade

2 Ramp

Figure 7 — Rotating disc

In the case of rotating drum machines and horizontal reciprocating machines the design of the machine shall

be such that only the underside of a fixed cutting device can be contacted and it is not possible to reach through this to the rotating drum or a moving cutter

5.2.2.4 Zone 4

Safeguards against access to the danger zone shall be ensured by fixed guards complying with EN 953

5.2.3 Stability

The machine shall be stable when used as specified in the instruction handbook

The machine shall be preferably designed to be self-stable when fitted with each one of their attachments

Machine fitted with castors shall have at least two castors (or sets of castors) fitted with a locking device

5.2.4 Incorrect assembly and fitting

The design of the machine shall ensure that detachable parts which provide safeguards in accordance with this standard – e.g distributor plate, feed hopper, feed chute, pusher device and discharge chute shall be in the correct position before the machine can be set in motion e.g by special mechanical design, position switches either with positive action or magnetic device !(see 5.2)"

5.2.5 Handling, cleaning and storage of cutting devices

The risk is from cutting by the sharp edge and the manufacturer shall provide suitable instructions for the safe handling, cleaning and storage of the cutting devices

Where there is a foreseeable risk of cutting or impact the manufacturer shall provide a rack

5.3 !Electrical hazards

5.3.1 General

Electrical equipment, for example switches, that may be exposed to water, e.g during cleaning, shall be protected to an appropriate IP rating according to EN 60529 and EN 60204-1

Electrical equipment shall comply with EN 60204-1 with specific requirements of 5.3 taking precedence

5.3.2 Safety requirements related to electromagnetic phenomena

The machines shall have sufficient immunity to electromagnetic disturbances to enable them to operate safely

as intended and not fail to danger when exposed to the levels and types of disturbances foreseeable in use The manufacturer of the machines shall design, install and wire the equipment and sub-assemblies taking into account the recommendations of the suppliers of these sub-assemblies

5.3.3 Protection against electric shock

The electrical equipment shall comply with Clause 6 of EN 60204-1:2006

5.3.4 Power circuits

Devices for detection and interruption of over-current shall be applied to each live conductor in compliance with EN 60204-1:2006, 7.2.3 In case of single phase machines, no such device is required for the earthed neutral conductor

5.3.5 Protection against earth faults in control circuits

For machinery supplied from a single-phase conductor and an earthed neutral conductor, there is no requirement for double pole interruption of the control circuit The single pole interruption shall be in the phase conductor (see 9.4.3.1 of EN 60204-1:2006)

5.3.6 Emergency stop

Machines shall be fitted with at least one emergency stop (see 10.7 of EN 60204-1:2006), as far as the risk assessment carried out by the manufacturer does not allow to establish that such a device would not reduce

In general no emergency stop is required for vegetable cutting machines In this case particular attention shall

be given to the accessibility of the normal OFF switch from the operator position

5.3.7 Motor enclosures

Where a motor has a degree of protection lower than IP23 it shall be mounted inside an enclosure (see 14.2

of EN 60204-1:2006) that guarantees a minimum degree of protection of IP23."

 the internal channels

However some parts of the food area, for example cutting devices, fixed plates and the components are not easy to clean and special instructions shall be provided for cleaning !(see 7.2)"

5.4.3 Splash area

The following parts shall be considered to be in the splash area as defined in EN 1672-2:

 some parts of the housing, particularly the feed and delivery chutes;

 sides of the machine which may be splashed with food;

 handles

5.4.4 Non food area

The non food area shall include any other areas other than splash areas and food areas outlined above

All food and splash areas shall be easily cleanable and where necessary capable of disinfection

Baffles shall be constructed in such a way that they are easily cleanable and self-draining and their under surfaces designed so that they can be cleaned

In food and splash areas, fasteners such as screws, bolts, rivets etc shall be avoided unless technically necessary, in which case, these shall be easily cleanable

5.5 Ergonomics

Regard shall be given to the ergonomic principles set out !in 4.8 of EN ISO 12100-2:2003 and

EN 614-1:2006" Any information necessary to achieve the ergonomic objectives which the user must follow (i.e height of feed chute) shall be included in the instruction handbook

For machines other than those described in figure 4, instructions for the installation shall specify that the maximum loading level of hopper shall be less than 1,4 m

!deleted text"

6 Verification of the safety and hygiene requirements and/or measures

!This clause contains the methods of testing for the presence and adequacy of the safety requirements stated in Clause 5 All safety measures of Clause 5 contain self-evidence criteria of acceptance

Verification of the requirements can be made by means of inspection, calculation or testing These shall be applied to a machine in a fully commissioned condition but partial dismantling may be necessary for the purpose of some checks Such partial dismantling shall not invalidate the result of verification

Methods of verification are given in Table 2."

!Table 2 Clause Method of verification

5.2.2.1 Measurement of the dimensions

Measurement of the stopping time Verification of the electric diagram Specific tests as described in Annex C Visual inspection

5.2.2.2 Measurement of the stopping time, machine empty

Verification of the electrical diagram Functional test

5.2.2.3 Visual inspection

5.2.2.4 Visual inspection

5.2.3 Unfixed empty machine is tilted 10° from the horizontal plane

It shall be possible to apply a force of 25 N on a lever or pusher, if necessary, without causing the machine to topple over

5.2.4 Visual inspection

5.2.5 Visual inspection

5.3 Verification shall be in accordance with Clause 18 of EN 60204-1:2006

5.4 In accordance with Annex B

5.5 Measurement of distances

Visual inspection Functional test

 of the cutting devices provided so as to reduce the risk from cuts and impact."

b) information relating to commissioning in particular:

 assembly and mounting conditions;

 information about prevention measures which have to be taken by the user, especially the use of the plunger supplied;

!

 information for installation (see relevant requirements in 5.2.2.1.3 and 5.5);

 information required by 5.2.2.1.3.1."

c) Information to the equipment itself, in particular:

 detailed description of the equipment, its fittings, its guards and/or safety devices;

 comprehensive range of applications for which the machines are intended and prohibited food products to be used e.g frozen products;

 machine weight and component weights if the machine is supplied in parts;

!

 the instruction handbook (and any sales literature describing the performances of the machine) shall contain the following information on airborne noise emissions, determined and declared in accordance with Annex A:

 the A-weighted emission sound pressure level at workstations, where this exceeds 70 dB(A); where this level does not exceed 70 dB(A), this fact shall be indicated;

 the peak C-weighted instantaneous sound pressure value at workstations, where this exceeds

63 Pa (130 dB in relation to 20 µPa);

 the A-weighted sound power level emitted by the machinery, where the A-weighted emission sound pressure level at workstations exceeds 80 dB(A)

Whenever sound emission values are indicated the uncertainties "K" surrounding these values shall

be specified The operating conditions of the machinery during measurement and the measuring methods used shall be described."

 data about electrical equipment and electrical wiring diagram;

 in the case of machines concerned by !5.3.4", the manufacturer shall indicate the value of the overcurrent protective device

d) Information relating to the normal operating conditions:

 recommended dimensions of receptacles;

 description of controls;

 modes and means for stopping the machine;

 all normal operations indicating how to use the safeguards provided and any residual safeguards or safe systems of work which the user has to follow and the appropriate training requirements;

 particular risks which may be generated by handling, cleaning and storing certain cutting devices, and about specific safeguards which are necessary for such applications;

 any limitations on the type of cutting devices or other attachments which can be used to prevent access if hazards have been eliminated at the design stage !(as required in 5.2.2.3)";

 arrangements which the user has to take to ensure the machine is stable as required in !5.2.3";

 any limitation on hosing the machine or immersing it because of the limited safeguards provided because of limits of protection given by the IP rating provided;

 any ergonomic considerations which the user should take (!see 5.5");

 dismantling of the attachment (with regard to safety considerations);

 method of cleaning food areas, splash areas and non-food areas;

 dismantling of guards and their components including the fasteners and the correct method of cleaning (with regard to safety considerations);

 special instructions for the cleaning of cutting devices, fixed plates and the components

e) Information for maintenance

The maintenance manual shall include:

 the lubrication drawing, frequency of servicing and list of products to be used;

 instructions to isolate the machine in a safe condition in the event of the need to repair or maintain any safety device;

 if need be: instructions designed to enable adjustment and maintenance to be carried out safely, including the protective measures to be taken during these operations."

!

f) accident or breakdown of the machine:

 the operating method to be followed in the event of accident or breakdown; if a blockage is likely to occur, the operating method to be followed so as to enable the equipment to be safely unblocked."

!

g) information relating to vibration

 for hand-guided parts of vegetable cutting machines the instruction handbook (and any sales literature describing the performances of the machine) shall in principle inform about the vibration total value to which the hand-arm system is subjected, if it exceeds 2,5 m/s² However, experience has shown that for these machines the magnitude of hand-arm vibration is significantly below 2,5 m/s² In this case it is sufficient to mention that the emission value is below 2,5 m/s²."

7.3 Marking

!The machinery shall be marked permanently and legibly with at least the following:"

 !the business name and full address of the manufacturer and, where applicable, his authorised representative;"

!

 designation of the machinery;"

 !mandatory marking1 );"

 !the year of construction, that is the year in which the manufacturing process is completed;"

 designation of series or type;

 serial number, if any;

 rating information (voltage in volts, frequency in hertz, power rating in kilowatts)

!1) For machines and their related products intended to be put on the market in the EEA, CE marking as defined in the applicable European Directive(s), e.g Machinery."

Annex A

(normative)

Noise test code for vegetable cutting machines (Grade 2 of accuracy)

A.1 Emission sound pressure level determination

EN ISO 11201:1995 shall be used for the determination of the emission sound pressure level

Measurement shall be taken at the normal operator's position, the operator being present, at a distance of 1 m from the vertical axis of the machine The position of the microphone is specified as follows: at a height of 1,55 m above the floor in a line with the rearward edge of the machine and located 0,2 m + 0,02 m to the side

of the person's centre plane on a line with the eyes and on that side where the highest value of a weighted sound pressure level is observed

NOTE For this engineering method, a value of the standard deviation of reproducibility equal to or less than 2,5 dB (excluding variations in operating and mounting conditions) could be expected for the A-weighted emission sound pressure level of a source which emits noise with a relatively "flat" spectrum in the frequency range 100 Hz to 10 000 Hz

A.2 Installation and mounting conditions

The test environment shall comply with clause 6 of EN ISO 11201:1995 It shall be qualified according to the annex A of EN ISO 3744:1995

NOTE For tests in open site, it is assumed that the environmental correction K2 is less than or equal to 0,5 dB and is therefore negligeable

The machine under test shall be placed on a reflecting (acoustically hard) test table as defined in annex B of

EN ISO 11201:1995 or a reflecting plane for machines on feet

A resilient mounting shall be interposed between the machine and the supporting surface so that transmission

of vibration to the support and reaction on the source are both minimised The machine should stand on this horizontal surface at the manufacturer's specified working height The machine shall be located at a sufficient distance from any reflecting wall or ceiling or any reflecting object

A.3 Operating conditions

The test shall be carried out with the machine running at full speed and equipped with the fine grater

The measurement shall be taken with raw potatoes being processed with maximum declared load

A.4 Measurement

The A weighted time-average emission sound pressure level LpA shall be measured

Instrumentation shall comply with clause 5 and 10.2.1 of EN ISO 11201:1995