IEC 60335-2-68:2021

IEC 60335-2-68 ®
Edition 5.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-68: Particular requirements for spray extraction machines, for
commercial use
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-68: Exigences particulières pour les machines de nettoyage par
pulvérisation et aspiration, à usage commercial

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IEC 60335-2-68 ®
Edition 5.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-68: Particular requirements for spray extraction machines, for

commercial use
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-68: Exigences particulières pour les machines de nettoyage par

pulvérisation et aspiration, à usage commercial

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.020 ISBN 978-2-8322-9838-1

– 2 – IEC 60335-2-68:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 11
5 General conditions for the tests . 11
6 Classification . 12
7 Marking and instructions . 12
8 Protection against access to live parts . 15
9 Starting of motor-operated appliances . 16
10 Power input and current . 16
11 Heating . 16
12 Charging of metal-ion batteries . 16
13 Leakage current and dielectric strength at operating temperature . 16
14 Transient overvoltages . 16
15 Moisture resistance . 16
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 19
18 Endurance . 19
19 Abnormal operation . 19
20 Stability and mechanical hazards . 20
21 Mechanical strength . 21
22 Construction . 24
23 Internal wiring . 25
24 Components . 25
25 Supply connection and external flexible cords . 25
26 Terminals for external conductors . 27
27 Provision for earthing . 27
28 Screws and connections . 27
29 Clearances, creepage distances and solid insulation . 27
30 Resistance to heat and fire . 27
31 Resistance to rusting . 27
32 Radiation, toxicity and similar hazards . 27
Annexes . 32
Annex B (normative) Battery-operated appliances, separable batteries and
detachable batteries for battery-operated appliances . 33
Annex AA (informative) Emission of acoustical noise . 34
Annex BB (informative) Emission of vibration . 37
Bibliography . 38
Index of defined terms . 39

Figure 101 – Impact test apparatus . 28
Figure 102 – Apparatus for testing the abrasion resistance of current-carrying hoses . 29
Figure 103 – Apparatus for testing the resistance to flexing of current-carrying hoses . 30
Figure 104 – Configuration of the hose for the freezing treatment . 30
Figure 105 – Flexing positions for the hose after removal from the freezing cabinet . 31
Figure AA.1 – Machine with cleaning head connected by hose and connecting tube . 36

Table 12 – Pull force and torque . 27

– 4 – IEC 60335-2-68:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-68: Particular requirements for spray
extraction machines, for commercial use

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.
IEC 60335-2-68 has been prepared by subcommittee 61J: Electrical motor-operated cleaning
appliances for commercial use, of IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2012 and its
Amendment 1: 2016. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition (minor changes are not listed):
– editorial and technical alignment with IEC 60335-1:2020.

The text of this International Standard is based on the following documents:
Draft Report on voting
61J/736/CDV 61J/743A/RVC
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/standardsdev/publications.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the sixth edition (2020) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Particular requirements for spray extraction
machines for commercial use.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

– 6 – IEC 60335-2-68:2021 © IEC 2021
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,
• replaced by a revised edition, or
• amended.
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 8 – IEC 60335-2-68:2021 © IEC 2021
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-68: Particular requirements for spray
extraction machines, for commercial use

1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electrical portable, non-self-propelled motor-
operated spray extraction machines with or without attachments and with or without
electrical heating elements, intended for commercial indoor use.
NOTE 101 This standard applies to machines for commercial use. The following list, although not
comprehensive, gives an indication of locations that are included in the scope:
– public use areas such as hotels, schools, hospitals;
– industrial locations, for example factories and manufacturing shops;
– retail outlets, for example shops and supermarkets;
– business premises, for example offices and banks;
– rental services for those machines;
– all uses other than normal housekeeping purposes.
These machines are not equipped with a traction drive.
NOTE 102 Machines for the same intended function but equipped with a traction drive are covered by
IEC 60335-2-72.
The following power systems are covered:
– mains powered motors up to a rated voltage of 250 V for single-phase appliances and
480 V for other appliances,
– battery-operated machines.
This standard applies to machines in which the pressure of the employed cleaning agent
does not exceed 2,5 MPa, and in which the product of the pressure (in MPa) and the flow of
cleaning agent (in litres per minute) does not exceed 100, and in which the temperature of
the cleaning agent at the spray nozzle outlet does not exceed 85 °C.
This standard does not apply to
– vacuum cleaners and water-suction cleaning appliances for household use
(IEC 60335-2-2);
– floor treatment machines for commercial use (IEC 60335-2-67, IEC 60335-2-72);
– wet and dry vacuum cleaners, including power brush, for commercial use
(IEC 60335-2-69);
NOTE 103 IEC 60335-2-67 and IEC 60335-2-69 cover only machines without traction drive.
– hand-held and transportable motor-operated electric tools (IEC 60745 series, IEC 61029
series, IEC 62841 series).
– machines designed for use in corrosive or explosive environments (dust, vapour or gas);
– machines designed for picking up hazardous dusts (as defined in IEC 60335-2-69),
inflammable substances, or glowing particles;

– machines designed to handle hazardous solvents, such as flammable or explosive liquids;
NOTE 104 Attention is drawn to the fact that in many countries, additional requirements on the safe use of the
equipment covered can be specified by the national health authorities, the national authorities responsible for the
protection of labour, the national water supply authorities and similar authorities.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC TS 62885-1, Surface cleaning appliances - Part 1: General requirements on test material
and test equipment
ISO 6344-2, Coated abrasives – Grain size analysis – Part 2: Determination of grain size
distribution of macrogrits P12 to P220
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Addition:
normal operation
conditions under which the machine is operated in normal use, specified as follows:
The machine is operated with the spray extraction pump with the nozzle giving the highest
load, the vacuum motor, the device for agitating the carpet pile (if any), the cleaning agent
heater (if any) and the soiled water discharge pump (if any) all in use. Any marking of short
time intermittent operation of the pumps is observed.
The normal operation P of the vacuum motor is obtained at the following power input:
m
P = 0,5 (P + P )
m f i
where
P is the input, in watts, when the machine has been operated for 3 min, fitted with the
f
nozzle and hose giving the highest input;
P is the input, in watts, when the machine has been operated for 20 s with the nozzle
i
sealed, immediately following the 3-minute-period with the nozzle open. Any valve or
similar device used to ensure a flow of air to cool the motor in the event of a blockage
of a main air inlet is rendered ineffective.
P and P are measured with the supply voltage adjusted to rated voltage, or to a voltage
f i
equal to the mean value of the rated voltage range if the difference between the limits of the
rated voltage range does not exceed 10 % of the mean value of the range. If the difference
between the limits of the rated voltage range exceeds 10 % of the mean value, the tests are
carried out with the supply voltage set to the upper limit of the range.
The hose is laid out straight. If the machine is provided with a hose as an optional accessory,
it is operated without the hose.
Electrically driven devices for agitating the carpet, if any, are in operation but are not in
contact with the floor or any other surface or with the means used to seal the air inlet.

– 10 – IEC 60335-2-68:2021 © IEC 2021
The adjustment of the air inlet is not altered when it is specified that the machine is operated
under normal load, irrespective of the supply voltages specified in the test. Where optional
filtration systems are supplied with the spray extraction machine, the filtration system giving
the least air resistance (maximum flow) is fitted.
The normal load is equal to the mean load P for the electrically driven agitating device such
r
as a motor driven brush is determined in accordance with the following:
– the agitating device operates on a carpet as specified in IEC TS 62885-1;
– the mean load P is determined when using the device in the following way:
r
after setting the device, the device is moved twice over a distance of 5 m in the direction
giving the highest load;
– the motor responsible for the airflow operates under the same conditions as determining
P , i. e. no airflow restrictions, and measurements are taken after 3 min;
f
– the device is adjusted to the carpet pile height;
– it is necessary to move the agitating device slowly across the carpet to avoid carpet
damage.
Soiled water discharge pumps, if applicable, are operated as follows.
The pump delivers a continuous flow of water without any soiled water discharge hose
attached to the soiled water outlet of the machines unless the discharge hose is permanently
attached to the machine. The vacuum motor works during the test, unless an interlock device
is provided to prevent combined operation of both motors.
3.101
cleaning agent pre-heater
electric heating element which is intended to raise the temperature of the cleaning agent to
operating temperature before the cleaning operation
3.102
cleaning agent heater
electric heater which is intended to maintain the cleaning agent at the correct temperature
for effective operation
3.103
cleaning agent
water with or without the addition of soluble or miscible detergent
3.104
spray extraction machine
machine with or without heating elements and with or without attachments, by which a
cleaning agent under pressure is sprayed into or onto the surface to be cleaned and the
remaining soiled cleaning agent is removed by suction
3.105
maximum rated operating pressure
maximum pressure generated by the pump when operated at rated voltage
3.106
water-suction cleaning machine
machine for applying and extracting a cleaning agent

3.107
motorized cleaning head
hand-held or hand-guided cleaning device connected to the machine, with an integrated
electrical motor
Note 1 to entry: The permanently attached main cleaning head is not regarded as a motorized cleaning head.
3.108
operator
person installing, operating, adjusting, cleaning, moving, or performing user maintenance on
the machine
3.109
test solution
solution which consists of 20 g of NaCl and 1 ml of a solution of 28 % by mass of dodecyl
sodium sulphate in each 8 l of water
Note 1 to entry: The chemical designation formula of for dodecyl sodium sulphate is C H NaSO .
12 25 4
3.110
commercial use
intended use of machines covered by this standard, i.e. not intended for normal housekeeping
purposes by private persons but which may be a source of danger to the public
I.e. in particular that
– the machines may be used by cleaning contractors, cleaning staff, etc.;
– they are used in commercial or public premises (i.e. offices, shops, hotels, hospitals,
schools, etc.) or in industrial (plants, etc.) and light industrial (workshops, etc.)
environments.
Note 1 to entry: Commercial use is also called professional use.
4 General requirement
This clause of Part 1 is applicable except as follows.
Replacement of the first paragraph by the following text:
Machines shall be constructed so that they function safely so as to cause no danger to
persons or surroundings during normal use, even in the event of carelessness, and during
installation, adjusting, maintenance, cleaning, repairing or transportation.
Addition:
For the purpose of this standard, the term ‘appliance’ as used in Part 1 is to be read as
‘machine’.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.101 The test solution is to be stored in a cool atmosphere and used within seven days
after its preparation.
– 12 – IEC 60335-2-68:2021 © IEC 2021
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Machines shall be one of the following classes with respect to the protection against electric
shock:
– class I,
– class II, or
– class III.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Spray extraction machines shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Replace the fourth dashed item as follows:
– the business name and address of the manufacturer and, if applicable, his authorized
representative; any address shall be sufficient to ensure postal contact;
Addition:
Machines shall be marked in addition with the following:
– serial number, if any;
– designation of the machine and series or type, allowing the technical identification of the
product. This may be achieved by a combination of letters and/or numbers;
NOTE 101 Designation of machine, series or type includes the model or type reference as required in Part 1.
– year of construction, i.e. the year in which the manufacturing process is completed;
NOTE 102 The year of construction can be part of the serial number.
– maximum rated operating pressure in MPa or bar;
– maximum outlet temperature of the spraying liquid in °C, if above 50 °C;
– machines shall be marked with the mass of the most usual configuration in kg.
The tank for the cleaning agent shall be marked on the tank, its cover or nearby, with the
maximum temperature of the cleaning agent filled into the tank in °C.
If the machine is designed to be filled with cleaning agent exceeding 60 °C, the following
warning shall be placed near the filling opening:
WARNING Hot. Do not touch.
The height of the lettering shall be not less than 4 mm. This wording may be replaced by
symbol IEC 60417-5041 (2002-10).
7.1.101 Motorized cleaning heads shall be marked with
– rated voltage or rated voltage range in volts;
– rated power input in watts;
– name, trade mark or identification mark of the manufacturer or responsible vendor;
– model or type reference;
– mass of the most usual configuration in kg.
Motorized cleaning heads for water-suction cleaning appliances, except those of class III
construction having a working voltage up to 24 V shall be marked with symbol
IEC 60417-5935 (2012-09).
NOTE This symbol is an information sign and, except for the colours, the rules of ISO 3864-1 apply.
Compliance is checked by inspection.
7.6 Addition:
[symbol IEC 60417-5935 motorized cleaning head for
(2012-09)] water-suction cleaning

[symbol IEC 60417-5041
caution, hot surface
(2002-10)]
7.12 Modification:
Delete the first paragraph and the first warning.
Add after the NOTE the following new text:
NOTE 101 Alternative requirements for instructions in hard copy form are available in 7.12.9
Addition:
The front cover of the instructions shall include the substance of the following warning:
CAUTION Read the instructions before using the machine.
This wording may be replaced by symbols ISO 7000-0434A (2004-01) and ISO 7000-0790
(2004-01).
The instructions shall contain at least the following:
– the business name and full address of the manufacturer and, if applicable, his authorized
representative;
– designation of series or type of the machine as marked on the machine itself, except for
the serial number;
– 14 – IEC 60335-2-68:2021 © IEC 2021
NOTE 102 The designation of series or type can be abstracted, as long as the identification of the product is
ensured.
– the general description of the machine;
– the intended use of the machine and the auxiliary equipment as covered by the scope of
this standard;
NOTE 103 Examples of auxiliary equipment are motorized cleaning heads and lights.
– the meaning of the symbols used on the machine and in the instructions;
– drawings, diagrams, descriptions and explanations necessary for the safe use,
maintenance and repair of the machine and for checking its correct functioning;
– technical data including the markings on the machine;
– information regarding putting into service, safe operation, handling, transportation, and
storage of the machine taking into account its weight;
– instructions to enable adjustment and maintenance to be carried out safely, including the
protective measures that should be taken during these operations;
– the conditions in which the machine meets the requirement of stability during use,
transportation, assembly, dismantling when out of service, testing or foreseeable
breakdowns;
– the procedure to be followed to prevent unsafe situations in the event of accident (e.g.
contact with or spillage of detergents, battery acid, fuel or oil) or equipment breakdown;
– the substance of the following:
This machine is intended for commercial use, for example in hotels, schools, hospitals,
factories, shops, offices and rental businesses.
The instructions shall indicate the type and frequency of inspections and maintenance
required for safe operation, including preventive maintenance measures. They shall, if
applicable, give the specifications of the spare parts if they affect the health and safety of the
operator, e.g. filter elements.
In addition, the instructions shall give the following information, if applicable:
– for battery powered machines, instructions regarding the precautions to be taken for safe
charging;
– precautions to be taken when changing brushes or other attachments;
– information on the detergents or other liquids that may be used including the choice and
use of personal protective equipment (PPE);
– essential characteristics of auxiliary equipment which may be fitted to the machine;
– information regarding safe disposal of batteries.
7.12.9 Add the following text after the second paragraph:
Instead of hard copy, electronic form can be used if the following conditions are met:
– instructions for unpacking, installation and enabling access to the complete safety
instructions on a suitable reading device shall be provided on paper or marked on the
machine,
– the suitable reading device shall be provided with the machine or be necessary to operate
the machine, and
– the content of the electronic instructions shall be provided with the machine.
For non-safety related functional use, the operational manual may be provided in electronic
form either:
– on a suitable electronic display incorporated in the appliance, or
– on a separate electronic device provided with the appliance, or
– from a provided link to a website, where they may be viewed and/or downloaded.

7.12.101 The instructions shall include warnings concerning ways in which the machine shall
not be used, which in the experience of the manufacturer are likely to occur. At least, it shall
include the substance of the following warnings, if applicable.
– WARNING Operators shall be adequately instructed on the use of these machines.
– CAUTION This machine is for indoor use only.
– CAUTION This machine shall be stored indoors only.
– A warning that the machine shall be disconnected from its power source during cleaning or
maintenance and when replacing parts or converting the machine to another function:
• for mains operated machines, by removing the plug from the socket-outlet;
• for battery powered machines, by safely disconnecting at least the B+ or B- pole of the
battery or by an equivalent method (disconnecting device); for non-SELV, both poles
must be disconnected.
Instructions for mains operated machines shall also include the substance of the following:
– WARNING Do not allow the supply cord to come into contact with the rotating brushes.
Instructions for machines having a current-carrying hose for dry suction, operating at other
than safety extra-low voltage, shall also include the substance of the following:
– WARNING This hose contains electrical connections: do not use it to collect water and
do not immerse in water for cleaning.
Compliance is checked by inspection.
7.12.102 Information on noise
NOTE The instructions provide information on airborne noise emission as indicated in AA.2.7.
7.12.103 Information on vibration
NOTE The instructions can provide information on the vibration total value as indicated in Clause BB.2.
7.13 Addition:
The words “Original instructions” shall appear on the language version(s) verified by the
manufacturer.
7.14 Addition: can
The height of symbol IEC 60417-5935 (2012-09) shall be at least 15 mm.
Compliance is checked by measurement.
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.1 Addition:
Water and water-borne cleaning agents are considered conductive.
8.1.1 Add the following text after the sixth paragraph:
NOTE 101 Appliances according to this standard are not regarded as being intended to be installed in an area
open to the public.
– 16 – IEC 60335-2-68:2021 © IEC 2021
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.7 Addition:
Machines are operated until steady conditions are established.
11.8 Add the following to Table 3, at the end of footnote a.
Motors which are hermetically sealed are considered to be airtight.
12 Charging of metal-ion batteries
This clause of Part 1 is applicable.
13 Leakage current and dielectric strength at operating temperature
This clause of Part 1 is applicable except as follows.
13.2 Addition:
For class I appliances where several motors operate at the same time, the leakage current
shall not exceed 3,5 mA.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.1.2 Addition:
Machines are operated for 10 min on a level surface wetted by the test solution.
In practice, the pick-up consists largely of air such that there is no overloading of the suction
motor; the input load should be observed to avoid overloading.
15.2 Replacement:
Machines shall be so constructed that

– spillage of liquid due to normal operation,
– filling including overfilling, and
– overturning of unstable machines
does not affect their electrical insulation.
Tanks for the following liquids are excluded from the tests:
– hydraulic oil,
– coolant,
– fuel (diesel, gasoline, LPG).
Compliance is checked by the following tests:
The machine is placed on a support inclined at an angle of 10° to the horizontal, the liquid
container being filled to half the level indicated in the instructions. A machine is considered to
be unstable if it overturns when a force of 180 N is applied to the top of the machine in the
most unfavourable horizontal direction.
Machines provided with an appliance inlet are fitted with an appropriate connector and flexible
cable or cord; machines with type X attachment are fitted with the lightest cross-sectional
area specified in Table 11. Other machines are tested as delivered.
The liquid container of the machine is completely filled with a saline solution of water
containing approximately 1 % NaCl and 0,6 % non-ionic rinsing agent and a further quantity,
equal to 15 % of the capacity of the container or 0,25 l, whichever is the greater, is poured in
steadily over a period of 1 min.
Any commercially available rinsing agent may be used, but if there is any doubt with regards
to the test results, the rinsing agent shall have the following properties:
– viscosity, 17 mPa s;
– pH 2,2 (1 % in water)
– and its composition shall comprise the following substances
– 1
Plurafac ® LF 221
15,0 % parts by mass
– Cumene sulfonate (40 % solution)
11,5 % parts by mass
– Citric acid (anhydrous)
3,0 % parts by mass
– Deionized water
70,5 % parts by mass
Machines which are unstable are then, with the container completely filled and with the cover
or lid in place, overturned from the most unfavourable of the normal positions of use, and are
left in that position for 5 min unless the machine returns automatically to its normal position of
use.
Nozzles a
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