SIST EN IEC 62885-4:2020
(Main)Surface cleaning appliances - Part 4: Cordless dry vacuum cleaners for household or similar use - Methods for measuring the performance
Surface cleaning appliances - Part 4: Cordless dry vacuum cleaners for household or similar use - Methods for measuring the performance
This part of IEC 62885 is applicable to measurements of the performance of cordless dry
vacuum cleaners for household use or under conditions similar to those in households. The
results obtained under this document are intended to be comparable to the results obtained
under IEC 62885-2 for mains-connected vacuums.
The purpose of this document is to specify essential performance characteristics of cordless
dry vacuum cleaners which are of interest to users and to describe methods for measuring
these characteristics.
NOTE 1 Owing to the influence of environmental conditions, variations in time, origin of test materials and
proficiency of the operator, most of the described test methods give more reliable results when applied to
comparative testing of a number of appliances at the same time, in the same laboratory and by the same operator.
NOTE 2 This document is not intended for mains-operated vacuum cleaners or cleaning robots.
NOTE 3 Cordless handheld vacuums are excluded, except for 5.7.2 and 5.8.
For safety requirements, reference is made to IEC 60335-1 and IEC 60335-2-2.
A recommendation on information for the consumer at the point of sale is given in Annex B of
IEC 62885-2.
Geräte zur Oberflächenreinigung - Teil 4: Schnurlose Trockensauger für den Hausgebrauch und ähnliche Anwendungen - Prüfverfahren zur Bestimmung der Gebrauchseigenschaften
Appareils de nettoyage des sols - Partie 4: Aspirateurs à sec sans fil à usage domestique ou analogue - Méthodes de mesure de l'aptitude à la fonction
L'IEC 62885-4:2020 s'applique aux mesures de l'aptitude à la fonction des aspirateurs à sec sans fil à usage domestique ou utilisés dans des conditions similaires. Les résultats obtenus dans le présent document sont destinés à être comparés à ceux de l'IEC 62885-2 pour les aspirateurs raccordés au réseau.
Le présent document a pour objet de spécifier les caractéristiques essentielles d'aptitude à la fonction des aspirateurs à sec sans fil présentant un intérêt pour les utilisateurs et de décrire des méthodes de mesure de ces caractéristiques.
La présente norme doit être lue conjointement avec l'IEC 62885-2:2016, à laquelle elle fait référence, et qui s'applique sauf spécification contraire dans la présente norme.
Naprave za površinsko čiščenje - 4. del: Brezvrvični vakuumski čistilniki za kemično čiščenje za gospodinjsko in podobno uporabo - Metode za merjenje lastnosti
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 62885-4:2020
01-november-2020
Naprave za površinsko čiščenje - 4. del: Brezvrvični vakuumski čistilniki za
kemično čiščenje za gospodinjsko in podobno uporabo - Metode za merjenje
lastnosti
Surface cleaning appliances - Part 4: Cordless dry vacuum cleaners for household or
similar use - Methods for measuring the performance
Ta slovenski standard je istoveten z: EN IEC 62885-4:2020
ICS:
97.080 Aparati za čiščenje Cleaning appliances
SIST EN IEC 62885-4:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 62885-4:2020
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SIST EN IEC 62885-4:2020
EUROPEAN STANDARD EN IEC 62885-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 97.080
English Version
Surface cleaning appliances - Part 4: Cordless dry vacuum
cleaners for household or similar use - Methods for measuring
the performance
(IEC 62885-4:2020)
Appareils de nettoyage des sols - Partie 4: Aspirateurs à Geräte zur Oberflächenreinigung - Teil 4: Schnurlose
sec sans fil à usage domestique ou analogue - Méthodes Trockensauger für den Hausgebrauch und ähnliche
de mesure de l'aptitude à la fonction Anwendungen - Prüfverfahren zur Bestimmung der
(IEC 62885-4:2020) Gebrauchseigenschaften
(IEC 62885-4:2020)
This European Standard was approved by CENELEC on 2020-08-17. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62885-4:2020 E
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EN IEC 62885-4:2020 (E)
European foreword
The text of document 59F/397/FDIS, future edition 1 of IEC 62885-4, prepared by SC 59F "Surface
cleaning appliances" of IEC/TC 59 "Performance of household and similar electrical appliances" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62885-4:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-05-17
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-08-17
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 62885-4:2020 was approved by CENELEC as a European
Standard without any modification.
2
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EN IEC 62885-4:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62301 (mod) 2011 Household electrical appliances - EN 50564 2011
Measurement of standby power
IEC 62885-2 2016 Surface cleaning appliances - Part 2: Dry - -
vacuum cleaners for household or similar
use - Methods for measuring the
performance
3
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SIST EN IEC 62885-4:2020
IEC 62885-4
®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Surface cleaning appliances –
Part 4: Cordless dry vacuum cleaners for household or similar use –
Methods for measuring the performance
Appareils de nettoyage des sols –
Partie 4: Aspirateurs à sec sans fil à usage domestique ou analogue –
Méthodes de mesure de l'aptitude à la fonction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.080 ISBN 978-2-8322-8597-8
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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– 2 – IEC 62885-4:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General conditions for testing . 6
5 Dry vacuum cleaning tests . 8
6 Miscellaneous tests . 15
7 Test material and equipment . 19
8 Instructions for use . 19
Annex A (informative) Information on materials . 20
Annex B (informative) Information at the point of sale . 21
Annex C (normative) Guidance specification on verified carpets . 22
Annex D (informative) Reference vacuum cleaner system (RSB) . 23
Annex E (informative) Maintenance of the RSB . 24
Bibliography . 25
Figure 101 – Air data curves . 9
Figure 102 – Carpet and hard floor test plates with suction tap locations . 12
Figure 103 – Test setup runtime determination . 13
Table 101 – Overview of duration and the values that should be reported . 16
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SIST EN IEC 62885-4:2020
IEC 62885-4:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE CLEANING APPLIANCES –
Part 4: Cordless dry vacuum cleaners for household or similar use –
Methods for measuring the performance
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC
Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62885-4 has been prepared by subcommittee 59F: Surface
cleaning appliances, of IEC technical committee 59: Performance of household and similar
electrical appliances.
The text of this International Standard is based on the following documents:
FDIS Report on voting
59F/397/FDIS 59F/404/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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This standard is to be read in conjunction with IEC 62885-2:2016, to which it refers, and
which is applicable unless otherwise specified in this standard. In order to simplify the
indication of corresponding requirements, the same numbering of clauses and subclauses is
used as in IEC 62885-2:2016. Amendments to these clauses and subclauses are given under
the same references whilst additional subclauses, tables, figures and notes are numbered
from 101. Additional annexes are lettered AA, BB, etc.
A list of all the parts in the IEC 62885 series, under the general title Surface cleaning
appliances, can be found on the IEC website.
In this standard, the following print types are used:
– terms defined in Clause 3: bold type
Where the term dry vacuum cleaner is used, it shall be read cordless dry vacuum cleaner.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
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SIST EN IEC 62885-4:2020
IEC 62885-4:2020 © IEC 2020 – 5 –
SURFACE CLEANING APPLIANCES –
Part 4: Cordless dry vacuum cleaners for household or similar use –
Methods for measuring the performance
1 Scope
This part of IEC 62885 is applicable to measurements of the performance of cordless dry
vacuum cleaners for household use or under conditions similar to those in households. The
results obtained under this document are intended to be comparable to the results obtained
under IEC 62885-2 for mains-connected vacuums.
The purpose of this document is to specify essential performance characteristics of cordless
dry vacuum cleaners which are of interest to users and to describe methods for measuring
these characteristics.
NOTE 1 Owing to the influence of environmental conditions, variations in time, origin of test materials and
proficiency of the operator, most of the described test methods give more reliable results when applied to
comparative testing of a number of appliances at the same time, in the same laboratory and by the same operator.
NOTE 2 This document is not intended for mains-operated vacuum cleaners or cleaning robots.
NOTE 3 Cordless handheld vacuums are excluded, except for 5.7.2 and 5.8.
For safety requirements, reference is made to IEC 60335-1 and IEC 60335-2-2.
A recommendation on information for the consumer at the point of sale is given in Annex B of
IEC 62885-2.
2 Normative references
Clause 2 of IEC 62885-2:2016 applies with the following addition:
IEC 62885-2:2016, Surface cleaning appliances – Part 2: Dry vacuum cleaners for household
or similar use – Methods for measuring the performance
IEC 62301:2011, Household electrical appliances – Measurement of standby power
3 Terms and definitions
Clause 3 of IEC 62885-2:2016 applies with following additions.
3.101
cordless dry vacuum cleaner
dry vacuum cleaner that is not mains-operated
Note 1 to entry: The term "cordless" is equivalent to "battery-operated" throughout the document.
3.102
fully charged
point during charging when, according to the manufacturer's instructions, by indicator or time
period, the product does not need to be charged anymore (see 4.6.101 for specific charging
instructions)
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3.103
fully discharged
point in use when the manufacturer's instructions state the product is fully discharged or the
vacuum motor stops spinning, whichever comes first
3.104
charging time
time required to fully charge a cordless dry vacuum cleaner from a fully discharged
condition
3.105
replacement battery
battery that is identical in type, fit and performance to the battery supplied with the cordless
product, and is changeable without tools
3.106
runtime
effective cleaning time provided by a cordless dry vacuum cleaner from a fully charged
condition as per 3.102 until the vacuum has dropped to less than 40 % of initial suction
performance or when the vacuum is fully discharged as per 3.103, whichever comes first
4 General conditions for testing
Clause 4 of IEC 62885-2:2016 applies with the following modifications.
4.3 Voltage and frequency
Replace the content of 4.3 of IEC 62885-2:2016 with the following:
Unless otherwise stated, charging for measurements shall be carried out at rated voltage with
a tolerance of ±1 % and, if applicable, at rated frequency.
Cordless dry vacuum cleaner chargers not marked with rated frequency shall be powered at
either (50 ± 1) Hz or (60 ± 1) Hz with a total harmonic distortion < 3 %, as is common in the
country of use. All charging should occur at the nominal system voltage of the country
concerned.
4.4 Running-in of dry vacuum cleaner
Replace the heading and content of 4.4 of IEC 62885-2:2016 with the following:
4.4 Running-in of cordless dry vacuum cleaner
Prior to the first test (and following preparations in line with the manufacturer's instructions)
on a new cordless dry vacuum cleaner, it shall be fully charged in accordance with the
manufacturer's instructions and then discharged by running with unrestricted air flow. The
sequence shall be repeated one more time with an interval of at least 30 min after each
discharge. No operation shall be carried out during this waiting time. For active nozzles
during discharge, the agitation device shall be running but not in contact with the floor.
Prior to conducting any series of tests, the age, condition, and history of the product shall be
recorded.
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4.4.101 Preparation of battery
Any unused Li-ion battery shall be fully charged and fully discharged once prior to
conducting the first test on a cordless dry vacuum cleaner. All other battery
chemistry/technology types shall be fully charged and fully discharged three times prior to
conducting the first test on a cordless dry vacuum cleaner. Fully charged and fully
discharged conditions are defined in 3.102 and 3.103, respectively.
NOTE It is understood that some cordless vacuums do not allow discharge below a certain energy level for
battery protection.
4.6 Operation of the dry vacuum cleaner
Subclause 4.6 of IEC 62885-2:2016 applies with the following addition to the end of the
subclause:
For declaration and compliance purposes, related tests for a given cleaning task shall be
conducted with the same cordless dry vacuum cleaner setting, cleaning head and cleaning
head setting. These settings shall be reported. Related tests are:
– tests measuring the dust removal from carpet, the energy consumption for cleaning a
carpet, runtime on carpet, and the noise level on carpet;
– tests measuring the dust removal from hard floor with crevices and the energy
consumption for cleaning a hard floor with crevices, runtime on hard floor, and the noise
level on hard floor.
4.6.101 Charging of the cordless dry vacuum cleaner
All testing performed on cordless dry vacuum cleaners is to be non-invasive. Only the
battery(-ies) provided with the product, and replacement battery(-ies) as per 3.105, shall be
used to power the vacuum. Each test is started with a fully charged sample, as per 3.102.
The manufacturer's charging unit, module, or docking system that is provided with the specific
cordless dry vacuum cleaner under test, shall be used for recharging the battery to a fully
charged state. The charging time could be 24 h in length or longer, as determined by the
items below. Proceed in the following order until a charging duration is determined.
a) If the battery charger, appliance (the charged device), the battery itself, or any kind of user
interface (e.g. app) has an indicator to show that the battery is fully charged, that
indicator shall be used as follows:
• If the indicator shows that the battery is fully charged within 19 h, the charging shall
be continued for at least 5 h beyond the full indication. The charging shall be
terminated at not more than 24 h.
• Conversely, if the full-charge indication has not appeared within 19 h of charging, the
charging shall continue until 5 h after the indication is present.
b) If there is no indicator, but the manufacturer's instructions indicate that charging this
battery or this capacity of battery should be complete within 19 h, the charging shall be for
24 h. If the instructions indicate that charging may take longer than 19 h, the charging
shall be run for the longest estimated charge time plus 5 h.
c) If there is no indicator and no time estimate in the manufacturer's instructions, but the
charging current is stated on the charger or in the instructions, calculate the charging
duration D in h as the longer of 24 h or:
C
C
D=1,4×+ 5 h
I
C
where
D is the duration in h;
C is the rated charge capacity in Ah;
C
I is the charge current in A.
C
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d) If none of the above applies, the duration of the charging shall be 24 h.
4.6.1.102 Battery conditions for testing
After a full charge, the cordless dry vacuum cleaner should be tested no earlier than 30 min
and no later than 12 h. The cleaner shall be disconnected from the charger during this period.
Make a note in the report if it is not possible to test owing to a short runtime.
This document does not currently address changing performance throughout the whole
runtime of some appliances. Results at different states of battery charge can vary. The
subclauses potentially affected are 5.1 to 5.6, 5.8 to 5.11 and 6.16. It is recommended to
perform test 5.101 first to understand the potential effect of discharge.
For tests where more than one repeat is needed, testing should be carried out within the
"90 % performance runtime" (t ) as determined in 5.101. However, if during the repeat,
90%rt
the "90 % performance runtime" of the cordless dry vacuum cleaner is exceeded, that
repeat shall be annulled, and the product is to be fully charged or a replacement battery be
employed to repeat the test.
4.7 Conditioning prior to each test
Subclause 4.7 of IEC 62885-2:2016 is not applicable.
5 Dry vacuum cleaning tests
Clause 5 of IEC 62885-2:2016 applies with the following modifications.
5.1.5 Preconditioning of dust receptacle
Subclause 5.1.5 of IEC 62885-2:2016 is applicable with the following modification in
paragraphs 2 and 4:
The cordless dry vacuum cleaner under test is equipped with a clean dust receptacle and
allowed to run with an unimpeded air flow with the nozzle clear of the surface for 30 s.
Since the cordless dry vacuum cleaner air flow can have an effect on the weight mass of
the dust receptacle during the 30 s of preconditioning, caution should be taken so that the
weight mass of the dust receptacle has stabilized before weighing.
5.8.1 Purpose
Subclause 5.8.1 of IEC 62885-2:2016 applies with the following addition:
P , the input power and η, the efficiency, are not relevant for cordless dry vacuum cleaners.
1
5.8.5 Determination of air data
Subclause 5.8.5 of IEC 62885-2:2016 applies with the second paragraph and Figure 9
removed; the third paragraph is replaced by the following paragraph, and Figure 101 is added:
For each measuring point, the air flow and vacuum are recorded 15 s after the throttling. The
cleaner is then again operated unthrottled for 15 s. This procedure is continued until all the
entire curves have been plotted, the measuring point for maximum vacuum being the last one.
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IEC 62885-4:2020 © IEC 2020 – 9 –
Key
h vacuum in the measuring box, in kilopascals (kPa)
q air flow, in litres per second (l/s)
P suction power, in watts (W)
2
Figure 101 – Air data curves
5.9.2.1 Test conditions
Subclause 5.9.2.1 of IEC 62885-2:2016 applies with the second bullet point replaced with the
following:
• The plenum chamber shall be fitted with a 19 mm orifice plate.
5.9.2.3 Procedure
Subclause 5.9.2.3 of IEC 62885-2:2016 applies with the second paragraph replaced with the
following:
With the feed tube closed, the cordless dry vacuum cleaner is run for at least 15 s.
Subsequently, the initial vacuum, h , shall be determined.
0
5.10 Total emissions while vacuum cleaning
Subclause 5.10 of IEC 62885-2:2016 does not apply, but is under consideration.
5.11.5 Verification of particle transport
Subclause 5.11.5 of IEC 62885-2:2016 is replaced by:
NOTE 101 There are known issues with the particle transport within this test. Measures are under development to
ensure and verify a proper particle transport. Changes may be necessary to the measuring equipment or to the way
the test is performed.
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5.11.6 Test procedure
Subclause 5.11.6 of IEC 62885-2:2016 is replaced by:
The test can be conducted either by using a single particle counter that is switched between
the intake and exhaust channels while counting, or by using two particle counters that count
intake and exhaust samples simultaneously.
Particle registration is carried out by a particle analysing system (see 7.3.8.5) that can be
operated with a suitable aerosol dilution system to adapt the count rate capacity and the
particle concentration of the aerosol intake and the exhaust channel, respectively. The results
of any single trial shall be recorded as follows:
• counter events/class; i.e. the number of events recorded by the particle counter, separately
for each range of particle size as well as for aerosol intake channel and exhaust channel;
• sample air volumes, VA (exhaust) and VA (intake); i.e. the volumes of the aerosol
ex in
samples analysed by the particle counter combined in the course of the trial;
• applicable dilution factors k (intake or exhaust) of the particle analysis system; i.e. the
VA
ratio between the volume of the air sample extracted from the channel and the sample air
volume analysed by the particle counter;
• time t for the latest clean air stability check, sampling time t , number of test periods
clean dust
n.
The following test procedure for a single trial may be repeated with several cordless dry
vacuum cleaners of identical type. Then, the final result of the trial shall be averaged
arithmetically.
Proper dilution ratio needs to be verified. Prove that the air is not over-concentrated by serial
dilution, and prove that it is not over-diluted on the exhaust by lessening the dilution serially;
see 7.3.8.5.
5.11.6.101 Single particle counter procedure
A single trial proceeds as follows:
• Conditioning: dust is fed for 5 min while the particle concentration in the intake channel is
monitored (quantity of test dust in accordance with 5.11.3). Afterwards, the cordless dry
vacuum cleaner has to be fully re-charged or a replacement battery employed. For dry
as per 5.101.4)
cordless vacuum cleaners having a "90 % performance runtime" (t
90%rt
of less than 5 min, this procedure has to be repeated until an accumulated conditioning
+1
running time of 5 min has been reached.
−0
• Clean air stability check: the cordless dry vacuum cleaner is operated for a time t
clean
(minimum 2 min but no more than 10 min) without dust being fed until acceptable and
stable conditions are achieved. Stability is defined as follows:
– no more than ±10 % variation in particle counts observed over 100 counts during 30 s
measurement periods when evaluated for a minimum of 2 min; or
– fewer than 100 particle counts observed during 30 s measurement periods, when
evaluated for a minimum of 2 min.
The particle analysing system shall be allowed to flush for up to 15 s between the 30 s
measurement periods. If stability is not met within the minimum 2 min evaluation period,
and the "90 % performance runtime" (t as per 5.101.4) has been reached, the device
90%rt
shall be fully recharged, or a replacement battery employed to repeat the clean air
stability check.
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IEC 62885-4:2020 © I
...
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