EN 17735:2022

Commercial dishwashing machines - Hygiene requirements and testing

EN 17735:2022

Name:EN 17735:2022   Standard name:Commercial dishwashing machines - Hygiene requirements and testing
Standard number:EN 17735:2022   language:English language
Release Date:13-Dec-2022   technical committee:CEN/TC 429 - Project Committee - Food hygiene - Commercial dishwashing - Hygiene requirements, testing
Drafting committee:CEN/TC 429 - Project Committee - Food hygiene - Commercial dishwashing - Hygiene requirements, testing   ICS number:97.040.40 - Dishwashers

SLOVENSKI STANDARD
01-marec-2023
Komercialni pomivalni stroji - Higienske zahteve in preskušanje
Commercial dishwashing machines - Hygiene requirements and testing
Gewerbliche Spülmaschinen - Hygieneanforderungen und Prüfung
Machines à laver la vaisselle commerciales - Exigences liées à l'hygiène et essais
Ta slovenski standard je istoveten z: EN 17735:2022
ICS:
97.040.40 Pomivalni stroji Dishwashers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17735
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 97.040.40
English Version
Commercial dishwashing machines - Hygiene
requirements and testing
Machines à laver la vaisselle commerciales - Exigences Gewerbliche Spülmaschinen - Hygieneanforderungen
liées à l'hygiène et essais und Prüfung
This European Standard was approved by CEN on 14 November 2022.

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-CENELEC 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-CENELEC 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17735:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 10
4.1 Process requirements . 10
4.1.1 General. 10
4.1.2 Requirements for obtaining hygienic washing results . 10
4.2 Technical requirements . 12
4.2.1 Requirements relating to construction materials . 12
4.2.2 Functional requirements . 12
4.3 Requirements relating to the treating agents . 13
5 Testing . 13
5.1 General. 13
5.2 Type and scope of tests . 13
5.3 Test procedures . 14
5.3.1 Type test . 14
5.3.2 Post-installation test . 17
5.4 Overview of the number of samples for microbiological testing and the associated
record sheets . 18
Annex A (normative) Testing of hygienic operation of dishwashing machines – type test and
post-installation test . 19
A.1 Load. 19
A.1.1 Type testing . 19
A.1.2 Post-installation testing . 24
A.2 Microbiological test methods . 25
A.2.1 Determination of microbial reduction by bioindicators . 25
A.2.2 Aerobic colony count of wash ware surface . 28
A.2.3 Determination of the aerobic colony count of the detergent solution . 28
A.3 Reference detergent and rinse aid for the type test . 29
A.3.1 General. 29
A.3.2 Reference detergent . 29
A.3.3 Reference rinse aid . 30
A.4 Test report . 30
A.4.1 Documentation . 30
A.4.2 Data in the test report . 30
Annex B (informative) Technical recommendations onsite . 32
B.1 Functional requirements relating to the operation of dishwashing machines . 32
B.1.1 General . 32
B.1.2 Water quality. 32
B.1.3 Temperature . 33
B.1.4 Contact time . 33
B.1.5 Requirements relating to the treating agents . 34
B.2 Testing . 35
B.2.1 General . 35
B.2.2 Type of tests and scope of testing onsite . 35
B.2.3 Daily inspection . 36
B.2.4 Periodic inspection . 36
B.2.5 Overview of the number of samples for microbiological testing and the associated
record sheets . 36
Annex C (informative) Guideline for planning, organization of the dishwashing process,
maintenance and servicing of dishwashing machines and also relating to wash ware
................................................................................................................................................................... 37
C.1 Planning of dishwashing machine facilities . 37
C.2 Organization of the dishwashing process . 38
C.2.1 Operating personnel . 38
C.2.2 Receiving of used wash ware . 38
C.2.3 Pre-cleaning and loading of dishwashing machines . 38
C.2.4 Dishwashing machine programme cycle . 38
C.2.5 Drying and preparation and storage of the wash ware for further use . 39
C.3 Maintenance and servicing . 39
C.3.1 Operational and functional safety . 39
C.3.2 Operation logbook. 39
C.3.3 Cleaning of dishwashing machine . 39
C.4 Wash ware . 40
C.4.1 General . 40
C.4.2 Shape . 40
C.4.3 Surface characteristics . 40
C.4.4 Shape and surface of drinking glasses . 40
Annex D (informative) Examples record sheets . 41
D.1 Evaluation of the determination of the surface aerobic colony count . 41
D.2 Checking the aerobic microorganism count of the detergent solution . 41
D.3 Results of inspection with bioindicators . 42
Annex E (informative) Alternative Test Method . 45
Bibliography . 46
European foreword
This document (EN 17735:2022) has been prepared by Technical Committee CEN/TC 429 “Food hygiene
- Commercial warewashing machines - Hygiene requirements and testing”, 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 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This doc
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