IEC 60704-2-3:2025

Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-3: Particular requirements for dishwashers

IEC 60704-2-3:2025 applies to single unit electric dishwashers for household and similar use, with or without automatic programme control, for cold and/or warm water supply, for detachable or permanent connection to water supply or sewage systems, intended for placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop or under a sink, for wall-mounting or on a counter. This fourth edition cancels and replaces the third edition published in 2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment to IEC 60704-1:2021,
b) change of the position of the test sample in the test enclosure (aligned to IEC 60704 1:2021),
c) detergent changed (aligned to IEC 60436:2025).
This International Standard is intended to be used in conjunction with the fourth edition of IEC 60704-1:2021.

Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 2-3: Exigences particulières pour les lave-vaisselle

L'IEC 60704-2-3:2025 s’applique à des lave-vaisselle électriques simples pour usage domestique et analogue, avec ou sans programme de contrôle automatique, alimentés en eau froide et/ou chaude, avec alimentation ou évacuation montée de manière fixe ou démontable, destinés à être placés sur le sol contre un mur, à être encastrés ou placés sous un comptoir (plan de travail), une paillasse (table de travail) ou un évier, à être fixés sur un mur ou placés sur un comptoir (plan de travail). Cette quatrième édition annule et remplace la troisième édition parue en 2017. La présente édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) alignement sur l’IEC 60704-1:2021,
b) modification de la position de l’échantillon pour essai dans l’enceinte d’essai (alignement sur l’IEC 60704-1:2021),
c) détergent modifié (alignement sur l’IEC 60436:2025).
La présente Norme internationale est destinée à être utilisée conjointement avec la quatrième édition de l’IEC 60704-1:2021.

General Information

• Status: Published
• Publication Date: 03-Jun-2025
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 97.040.40 - Dishwashers
• Technical Committee: SC 59A - Electric dishwashers
• Drafting Committee: JWG 2 - TC 59/JWG 2
• Current Stage: PPUB - Publication issued
• Start Date: 04-Jun-2025
• Completion Date: 13-Jun-2025

Relations

• Revises: IEC 60704-2-3:2017 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-3: Particular requirements for dishwashers
• Effective Date: 15-Dec-2023

Standards Content (Sample)

IEC 60704-2-3 ®
Edition 4.0 2025-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-3: Particular requirements for dishwashers

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-3: Exigences particulières pour les lave-vaisselle
ICS 97.040.40, 17.140.20 ISBN 978-2-8327-0446-2

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– 2 – IEC 60704-2-3:2025 © IEC 2025
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Measurement methods and acoustical environments . 7
6 Operation and location of appliances under test . 8
7 Measurement of sound pressure levels . 10
9 Information to be recorded . 11
10 Information to be reported . 11
Annex A (normative) Standard test table . 12
Annex B (normative) Test enclosure . 13

Table 1 – Standard deviations of sound power levels . 7
Table 2 – Standard deviations for declaration and verification . 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – TEST CODE
FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE –

Part 2-3: Particular requirements for dishwashers

FOREWORD
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IEC 60704-2-3 has been prepared by subcommittee 59A: Electric dishwashers, of IEC technical
committee 59: Performance of household and similar electrical appliances. It is an International
Standard.
This fourth edition cancels and replaces the third edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment to IEC 60704-1:2021,
b) change of the position of the test sample in the test enclosure (aligned to
IEC 60704-1:2021),
– 4 – IEC 60704-2-3:2025 © IEC 2025
c) detergent changed (aligned to IEC 60436:2025).
The text of this International Standard is based on the following documents:
Draft Report on voting
59A/272/FDIS 59A/275/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This International Standard is intended to be used in conjunction with the fourth edition of
IEC 60704-1:2021.
This document supplements or modifies the corresponding clauses in IEC 60704-1:2021, so as
to establish the test code for dishwashers. When a particular subclause of IEC 60704-1:2021
is not mentioned in this Part 2-3, that subclause is applicable as far as reasonable. Where this
standard states "addition", "modification" or "replacement", the relevant requirements, test
specifications or explanatory matter in IEC 60704-1:2021 should be adapted accordingly.
Subclauses, tables and figures that are numbered starting from 101 are additional to those in
IEC 60704-1:2021.
Unless notes are in a new subclause or involve notes in IEC 60704-1:2021, they are numbered
starting from 101, including those in a replaced clause or subclause.
Additional annexes are lettered AA, BB, etc.
In this standard, the following print types are used:
• terms defined in Clause 3: bold type.
A list of all parts in the IEC 60704 series, published under the general title Household and
similar electrical appliances – Test code for the determination of airborne acoustical noise, can
be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
INTRODUCTION
The measuring conditions specified in this document provide for sufficient accuracy in
determining the noise emitted and comparing the results of measurements taken by different
laboratories, whilst simulating as far as possible the practical use of dishwashers.
It is recommended to consider the determination of noise levels as part of a comprehensive
testing procedure covering many aspects of properties and performance of household
dishwashers.
NOTE As stated in the Introduction to IEC 60704-1:2021, this test code concerns airborne noise only.

– 6 – IEC 60704-2-3:2025 © IEC 2025
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – TEST CODE
FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE –

Part 2-3: Particular requirements for dishwashers

1 Scope
Addition:
These particular requirements apply to single unit electric dishwashers for household and
similar use, with or without automatic programme control, for cold and/or warm water supply,
for detachable or permanent connection to water supply or sewage systems, intended for
placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop
or under a sink, for wall-mounting or on a counter.
2 Normative references
Addition:
IEC 60436:2025, Electric dishwashers for household use – Methods for measuring the
performance
3 Terms and definitions
3.3
operational cycle
Replacement:
sequence of operational periods starting with the initiation of the programme (excluding any
user programmed delay) and ending when all activity ceases (i.e. the dishwasher can revert to
off mode or it can have a steady state power consumption until the user opens the dishwasher
or turns the unit off)
Note 1 to entry: Audible programme end signals should be switched off or set to the lowest configuration. If this is
not possible, the audible signals shall be included in the measurement.
3.101
rated dishwasher capacity
whole number of place settings together with the serving pieces which can be cleaned and dried
in one cycle when loaded in accordance with the manufacturer’s instructions
Note 1 to entry: The rated dishwasher capacity is declared by the manufacturer and expressed as a number of
place settings.
[SOURCE: IEC 60436:2025, 3.1.12]
3.102
drying
operational period during which the load is dried, beginning when the washing pump has
stopped after final rinse and ending with the end of the operational cycle

4 Measurement methods and acoustical environments
4.2 Direct method
Addition:
If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the special reverberation room can increase.
In such cases, additional microphone positions or source positions can be necessary, as
specified in ISO 3743-2:2018.
4.3 Comparison method
Addition:
If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the hard-walled test room or in the special
reverberation room can increase. In such cases, additional microphone positions or source
positions can be necessary, as specified in ISO 3743-1:2010 or ISO 3743-2:2018.
4.4 Acoustical environments
4.4.1 General requirements and criterion for adequacy of the test environment
Addition:
The methods specified in ISO 3743-1:2010, ISO 3743-2:2018 and ISO 3744:2010 can be used
for measuring noise emitted by electric dishwashers.
4.5 Measurement uncertainties
4.5.2 Standard deviations on repeatability and reproducibility and standard deviations
related to declaration and verification
Replacement:
The estimated values of standard deviations of sound power levels determined according to
this document are given in Table 1:
Table 1 – Standard deviations of sound power levels
Standard deviation
dB
σ (repeatability) σ (reproducibility)
r R
0,4 0,8
For the purpose of determining and verifying declared noise emission values according to
IEC 60704-3, the values in Table 2 apply:
Table 2 – Standard deviations for declaration and verification
Standard deviation
dB
σ (production) σ (total) σ (reference)
P t M
1,0 to 1,5 1,3 to 1,7 2,0
– 8 – IEC 60704-2-3:2025 © IEC 2025
6 Operation and location of appliances under test
6.1 Equipping and pre-conditioning of appliances
6.1.3
Replacement:
Prior to commencing measurements, the inner surfaces of the appliance and filters shall be
clean. The salt container, if included, shall be filled according to manufacturer’s instructions.
The rinse aid container, if included, shall be filled with rinse aid. The type and the settings for
the salt and the reference rinse aid to be used are defined in IEC 60436:2025 , 5.8 and 5.9.
Before conducting noise tests on a new dishwasher, it shall be operated for at least two cycles,
using a programme suitable for normally or heavily soiled tableware, with reference detergent
as specified in 6.4.2 and with reference rinse aid, to remove manufacturing residue; a clean
load or no load may be used.
If the appliance has been out of operation for more than 3 weeks, it shall be operated for at
least one cycle, using a programme suitable for normally or heavily soiled tableware, with
reference detergent as specified in 6.4.2 and with reference rinse aid; a clean load or no load
may be used.
Specifications that are given specially for the use of test laboratories shall be ignored.
6.1.4
Replacement:
The appliance under test shall be conditioned at ambient temperature according to 6.3 for at
least 3 h before the test programme starts.
6.2 Supply of electric energy and of water or gas
6.2.2
Not applicable.
6.2.3
Not applicable.
6.2.4
Replacement:
Dishwashers designed for cold water only shall be tested with cold water of (15 ± 5) °C.
Dishwashers designed for hot water only shall be tested with hot water of (60 ± 5) °C.
Dishwashers, which can be operated with either cold or hot water shall be supplied with cold
water.
For noise measurements, the static water pressure during filling shall be (240 ± 50) kPa, if
not contradictory to the manufacturer's instructions.
Some countries specify a water temperature and/or water pressure for regulatory purposes, in
which case this water temperature and water pressure must be used for testing.

There is no specific requirement for water hardness.
6.4 Loading and operating of appliances during tests
6.4.2
Replacement:
Dishwashers shall be operated in the standard test programme according to 6.101, with a
standard test load according to 6.102. Detergent according to IEC 60436:2025, 5.7 shall be
placed in the dishwasher immediately prior to starting the programme in the locations specified
by the manufacturer. If a dispenser is fitted, some or the entire detergent dose shall be placed
in it according to the manufacturer’s instructions. The dispenser shall be clean and dry prior to
the placement of detergent. In the absence of manufacturer’s recommendations, the detergent
shall be placed in the main compartment of the dispenser.
The standard test load shall be dry and at ambient temperature according to 6.3 when the
standard test programme starts. The glass with ballast soil shall be removed from the freezer
and placed in the dishwasher within 2 min before the standard test programme starts.
Follow the supplied loading plan of the manufacturer. If no loading plan is available or if the
loading plan does not describe the placement of the ballast soil, load the glass with ballast soil
at a position that water from a nozzle reaches the inside of the glass.
Avoidable noise as a result of rattling of tableware through collision by water jets or spray arms
shall be prevented.
If regeneration occurs during sound measurement, the measurement remains valid.
6.5 Location and mounting of appliances
6.5.2
Replacement:
Counter-top and table-type appliances shall be positioned according to 6.5.4 on the floor of the
measurement room.
6.5.3
Not applicable.
6.5.6
Replacement:
Appliances with an irremovable worktop and appliances specified by the manufacturer for free-
standing use only shall be measured free-standing. All other appliances shall be placed in a
test enclosure, as described in IEC 60704-1:2021, Annex B and the worktop – if any – shall
be removed. It shall be ensured that no structure-borne noise is transmitted to the test
enclosure.
The manufacturer’s instructions regarding installation and use of the appliance shall be followed.
The front edge of the housing of the dishwashers designed to be built-in (except door) shall be
20 mm to 25 mm behind the front edge of the test enclosure.

– 10 – IEC 60704-2-3:2025 © IEC 2025
If there is no skirting board integrated and the manufacturer’s installation instructions provide
for a skirting board at the lower front side of the appliance, the test enclosure shall be provided
with a skirting board of the maximum height compatible with the door assembly and of the same
material and thickness as the test enclosure. If the position of the skirting board is not specified
by the manufacturer, the skirting board shall be positioned in close contact with the appliance.
If an appliance is provided with spacers, strips, or other special means of solid or resilient
material for closing the gap(s) between the contours of the appliance and the cabinet or
enclosure, these means shall be used accordingly. If such means are not provided, the gap(s)
are left open. Spacers, strips or other special means for closing the gap(s) which are provided
for the testing only shall be ignored.
At the rear left-hand or right-hand corner of the test enclosure, a cut-out at a minimum size
shall be provided to enable, for example, power supply, water supply and drainage. This cutout
shall be sealed to avoid any noise leakage.
If necessary, the test enclosure shall be provided with ventilation openings in accordance with
the manufacturer’s instructions.
Appliances to be integrated shall be installed in the same conditions as built-in appliances. In
addition, they shall be equipped, in accordance with the manufacturer’s instructions, with a door
assembly of the maximum surface allowed by the manufacturer, and of the same material and
thickness as the test enclosure.
6.101 Standard test programme for noise measurements
The standard test programme for noise measurements is the same programme as used for
measuring the cleaning performance, the drying performance, energy and water consumption,
and programme duration according to IEC 60436:2025.
6.102 Standard test load for noise measurements
The standard test load for noise measurements is the load according to IEC 60436:2025. It
consists of the whole number of complete place settings plus the corresponding serving pieces,
which together comprise the manufacturer’s rated dishwasher capacity. The standard test
load includes one glass filled with frozen ballast soil. Apart from this glass, the standard test
load shall be unsoiled. The ballast soil shall be prepared from UHT (ultra-heat treated) milk with
a fat content of 3,5 % ± 0,5 %.
Depending on the declared number of place settings, a different amount of ballast soil should
be used: 50 ml for 1 to 3 place settings, 100 ml for 4 to 7 place settings, 150 ml for 8 to 10
place settings and 200 ml for more than 10 place settings.
The glass shall be filled with the defined volume of ballast soil and shall be frozen in a freezer
compartment at −18 °C or colder. Freeze for a minimum of 24 h.
7 Measurement of sound pressure levels
7.1 Microphone array, measurement surface and RSS location for essentially free field
conditions over reflecting plane(s)
7.1.2
Not applicable.
7.1.4 to 7.1.7
Not applicable.
7.4 Measurements
7.4.1
Addition:
The A-weighted sound pressure level shall be time-averaged over the whole duration of the
operational cycle both with and without drying. The result shall be the higher of the two values.
If the noise of the appliance under test varies periodically, it shall be ensured to avoid any effect
of synchronism between the variation of the noise emission an
...