IEC 60335-2-124:2024

IEC 60335-2-124 ®
Edition 1.0 2024-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-124: Particular requirements for commercial dry ice blasting machines

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-124: Exigences particulières pour les machines de projection de glace
carbonique à usage commercial
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IEC 60335-2-124 ®
Edition 1.0 2024-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –

Part 2-124: Particular requirements for commercial dry ice blasting machines

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-124: Exigences particulières pour les machines de projection de glace

carbonique à usage commercial
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.080 ISBN 978-2-8322-8121-5

– 2 – IEC 60335-2-124:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 9
7 Marking and instructions . 10
8 Protection against access to live parts . 14
9 Starting of motor-operated appliances . 14
10 Power input and current . 14
11 Heating . 14
12 Charging of metal-ion batteries . 14
13 Leakage current and electric strength at operating temperature . 14
14 Transient overvoltages . 15
15 Moisture resistance . 15
16 Leakage current and electric strength . 15
17 Overload protection of transformers and associated circuits . 15
18 Endurance . 15
19 Abnormal operation . 15
20 Stability and mechanical hazards . 16
21 Mechanical strength . 17
22 Construction . 18
23 Internal wiring . 21
24 Components . 21
25 Supply connection and external flexible cords . 21
26 Terminals for external conductors . 22
27 Provision for earthing . 22
28 Screws and connections . 22
29 Clearances, creepage distances and solid insulation . 22
30 Resistance to heat and fire . 22
31 Resistance to rusting . 23
32 Radiation, toxicity and similar hazards . 23
Annexes . 24
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 25
Annex AA (informative) Emission of acoustical noise . 26
Annex BB (informative) Emission of vibration . 30
Bibliography . 31

Figure 101 – Impact test apparatus . 23

Figure AA.1 – Position of dry ice-blasting machines . 29

Table 12 – Pull force and torque . 22
Table AA.1 – Determination of uncertainty . 28

– 4 – IEC 60335-2-124:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-124: Particular requirements for commercial dry ice blasting
machines
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60335-2-124 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.
The text of this International Standard is based on the following documents:
Draft Report on voting
61J/780/FDIS 61J/781/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.
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.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments unless that edition precludes it; in that case, the latest edition that does not
preclude it is used. 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 commercial dry ice blasting
machines.
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 sub clause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or sub clause;
– 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.
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.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations can 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.

IMPORTANT – The "colour inside" logo on the cover page of this document 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.

– 6 – IEC 60335-2-124:2024 © IEC 2024
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.
Guidance documents concerning the application of the safety requirements for appliances can
be accessed via TC 61 and SC61J supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments
https://www.iec.ch/sc61j/supportingdocuments
This information is given for the convenience of users of this International Standard and does
not constitute a replacement for the normative text in this standard.
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 can 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 publications, basic safety publications and group safety publications 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.
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.
NOTE 3 Standards dealing with non-safety aspects of household appliances are:
– IEC standards published by TC 59 concerning methods of measuring performance;
– CISPR 11, CISPR 14-1 and relevant IEC 61000-3 series standards concerning electromagnetic emissions;
– CISPR 14-2 concerning electromagnetic immunity;
– IEC standards published by TC 111 concerning environmental matters.

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-124: Particular requirements for commercial dry ice blasting
machines
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of dry ice blasting machines intended for
commercial indoor or outdoor use for the following hand-guided applications:
– cleaning,
– decoating,
– stripping
of surfaces.
The blasting machines are either equipped with containers for storage of dry ice or produce dry
ice internally.
These machines are not equipped with a traction drive.
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 does not apply to
– dry ice blasting machines with integrated generation of compressed air;
– dry ice blasting machines using other transport gases besides compressed air or nitrogen;
– dry ice blasting machines with nozzles being controlled by robotic arms;
– spray extraction machines for commercial use (IEC 60335-2-68);
– high pressure cleaners (IEC 60335-2-79);
– sand blasting equipment (abrasive blasting);
– 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 use in vehicles in non-ventilated environment;
– machines designed for use on board of ships or aircraft.
NOTE 101 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 and similar authorities.

– 8 – IEC 60335-2-124:2024 © IEC 2024
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Modification:
Replace the first paragraph with the following:
conditions under which the machine is operated in normal use, as intended by the manufacturer
It denotes the load corresponding to the highest obtainable load of all particular loads of the
various functions that can be operated at the same time according to the manufacturer’s
instructions, being equipped with the appropriate nozzle while being supplied at rated voltage
and continuously spraying cleaning agent with the highest flow rate and at rated pressure.
Containers of machines, if applicable, are filled before starting the operation to the highest level
as indicated on the container, or completely if no marking is provided. Additional necessary
supply means (e.g. compressed air), if applicable, are connected and supply according their
maximum rating. All filters, strainers etc. need to be in clean condition.
The largest gas bottles intended, if any, are connected, fully filled to the machine. During
operation the rated gas pressure needs to be maintained.
3.6 Definitions relating to parts of an appliance
3.6.101
trigger gun
hand-held spraying device where the flow of the cleaning agent is regulated by an integrated
manually operated control device
3.7 Definitions relating to safety components
3.7.101
operator presence control
OPC
control device that automatically interrupts the power, e.g. to a drive, when the operator's
actuating force is removed
Note 1 to entry: Such devices can be, for example, continuous action controls ("hold-to-run" controls).
3.7.102
guard
part of the machine specifically designed to provide protection by means of a physical barrier
Note 1 to entry: Three main kinds of guards can be distinguished: fixed guards, interlocking moveable guards and
adjustable guards. Interlocking movable guards are required where frequent access is envisaged, while fixed
guards can be used where frequent access is not envisaged.
Note 2 to entry: Examples are a casing, a shield, a cover, a screen, a door, an enclosure or a fence.
Note 3 to entry: Other parts of the machine that fulfil a primarily operational function, such as, for example, the
frame of the machine, may also fulfil a protective function but are not referred to as guards.

3.8 Definitions relating to miscellaneous matters
3.8.101
operator
person installing, operating, adjusting, maintaining, cleaning or moving the machine
3.8.102
cleaning agent
compressed air or nitrogen with the addition of dry ice particles
Note 1 to entry: Dry ice particles can consist of solid dry ice particles or of dry ice snow.
3.11 Definitions relating to remote functionality
3.11.5
Note 101 to entry: Control of the cleaning agent jet at the trigger gun is not regarded as remote operation.
4 General requirement
This clause of Part 1 is applicable except as follows.
Modification:
Replace the first paragraph with the new 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.
Addition:
WARNING − Some tests can result in suffocation, cold burn, and intense noise. It is therefore
important that personnel be protected from suffocation due high concentration of CO or N gas
2 2
from dry ice, extreme cold surface and intense noise from the spray nozzle. The test area shall
be well ventilated to protect personnel from harmful CO or N gas.
2 2
5.101 The hydrostatic tests of 21.103 shall be performed with water to reduce the risk for the
personnel.
6 Classification
This clause of Part 1 is applicable except as follows.

– 10 – IEC 60335-2-124:2024 © IEC 2024
6.1 Replacement:
Machines shall be one of the following classes with respect to the protection against electric
shock:
– class I, or
– class III.
Hand-held parts containing electrical components shall be of class III construction.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Machines shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
th
Replace the 4 dashed item as follows:
– 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.
– the mass of the most usual configuration in kg;
– the maximum inlet gas pressure;
– the warning sign ISO 7010 W010 (2011-05) – Warning – Low temperature/Freezing
conditions;
– the warning sign ISO 7010 W041 (2016-10) – Warning − Asphyxiating atmosphere;
– the warning sign ISO 7010 M003 (2011-05) – Wear ear protection;
– the warning sign ISO 7010 M004 (2011-05) – Wear eye protection;
– the warning sign ISO 7010 M009 (2011-05) – Wear protective gloves.
NOTE 103 The standard for protective gloves is ISO 21420 in combination with EN 511.
The equipotential bonding connector shall be marked with symbol IEC 60417-5021 (2002-10)
on the connector or close to it.
If the machine design cannot avoid incorrect mounting leading to an unsafe situation in
accordance with 22.106, it shall be marked with information on the correct mounting.

7.6 Addition:
[symbol IEC 60417-5021
equipotentiality
(2002-10)]
[warning sign ISO 7010 Warning – Low temperature/Freezing
W010 (2011-05)] conditions
[warning sign ISO 7010
Warning – Asphyxiating atmosphere
W041 (2016-10)]
[warning sign ISO 7010 Wear ear protection
M003 (2011-05)]
[warning sign ISO 7010
Wear eye protection
M004 (2011-05)]
[warning sign ISO 7010 Wear protective gloves
M009 (2011-05)]
The rules for warning signs in ISO 3864-1 do not apply. It is acceptable to show these signs in
monochrome colour.
7.12 Modification:
Add after the Note the following new Note:
NOTE 101 Alternative requirements for instructions in hard copy form are available in 7.12.9.
th
Replace the 4 paragraph with the following new text.
This machine is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge.
Addition:
The front cover of the instructions shall include the substance of the following warning:

– 12 – IEC 60335-2-124:2024 © IEC 2024
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;
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 spray accessories.
– 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;
– 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 battery acid, oil) or equipment breakdown;
– the substance of the following:
This machine is intended for commercial use, for example in workshops, industry, factories
and rental businesses.
– the temperature range for storage and operation;
– the specifications of the gas bottles to be used, if applicable.
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.
In addition, the instructions shall give the following information, if applicable:
– information on the characteristics of the dry ice pellets to be used;
– information on the choice and use of personal protective equipment (PPE);
– essential characteristics of auxiliary equipment which may be fitted to the machine.
7.12.9 Modification:
nd
Add the following new text after the 2 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 can 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.
– WARNING Do not use the machine if a supply cord or important parts of the machine
are damaged, e.g. safety devices, hoses, trigger gun.
– WARNING During indoor or confined space use, (CO or N ) gas warning systems shall
2 2
be used.
– WARNING Only use indoors when adequate ventilation is provided, and when a second
person has been instructed to look after you.
– 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 by
removing the plug from the socket outlet.
– WARNING Dry ice jet may cause hazardous acceleration of loosened particles.
– WARNING Do not use the machine within range of persons unless they wear protective
clothing.
– WARNING To ensure machine safety, use only original spare parts from the
manufacturer or approved by the manufacturer.
– WARNING Do not use the machine if a supply cord or important parts of the machine are
damaged, e.g. safety devices, hoses, trigger gun.
– WARNING Always switch off the mains disconnecting switch when leaving the machine
unattended.
– WARNING The machine shall be disconnected from its power source and separate from
other sources of energy such as CO or N gas supply during cleaning or maintenance and
2 2
when replacing parts.
7.12.102 Information on noise
NOTE Information on the emission of acoustical noise can be found in Annex AA.
7.12.103 Information on vibration
NOTE Information on the emission of vibration can be found in Annex BB.
7.13 Addition:
The words "Original instructions" shall appear on the language version(s) verified by the
manufacturer.
– 14 – IEC 60335-2-124:2024 © IEC 2024
7.14 Addition:
The height of warning signs ISO 7010 W010 (2011-05), ISO 7010 W041 (2016-10), ISO 7010
M003 (2011-05), ISO 7010 M004 (2011-05), ISO 7010 M009 (2011-05) 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.
8.1.1 Modification:
th
Add the following new Note after the 5 paragraph:
NOTE 101 Appliances according to this standard are not regarded as being intended to be installed in an area open
to the public.
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.
11.4 Not applicable.
11.7 Addition:
Depleted dry ice containers shall be refilled if necessary. If a gas bottle, if any, is depleted, it
shall immediately be replaced with another full gas bottle.
The test shall be continued until the second gas bottle is depleted or until steady conditions are
established. However, the total duration shall not be less than 2 hours.
11.8 Modification:
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 electric 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.
15.2 Addition:
Dry ice pellet containers are not regarded as liquid containers.
NOTE 101 Dry ice sublimates at atmospheric pressure and will not be present in liquid form.
Tanks for the following liquids are excluded from the tests:
– hydraulic oil,
– coolant.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is applicable except as follows.
18.101 Machines with motors provided with self-resetting thermal cut-outs shall work
reliably under overvoltage conditions.
Compliance is checked by the following test.
The machine is supplied at a voltage equal to 1,1 times rated voltage, under locked rotor
conditions so as to cause the thermal cut-out to operate within a few minutes, until the thermal
cut-out has performed 200 cycles of operation.
After the test, the machine shall withstand the tests of Clause 16.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.

– 16 – IEC 60335-2-124:2024 © IEC 2024
19.1 Addition:
Machines with appliance outlets complying with the standard sheets in IEC 60320-3 and socket
outlets are subjected to the test of 19.101.
19.5 Modification:
In the 4th paragraph, delete the following text:
"− used in a system with polarized plugs intended for connection to polarized socket outlets."
19.101 Machines with appliance outlets complying with the standard sheets in IEC 60320-3
and socket outlets shall be operated under conditions of normal operation, except the
appliance outlet or socket outlet is loaded with the maximum load corresponding to its
configuration in accordance with IEC 60320-3 or IEC 60083, respectively. Machines with more
than one appliance outlet or socket outlet are tested with each outlet loaded one at the time.
However, this test is not applied for machines with appliance outlets or socket outlets
– intended only to supply accessories supplied with the machine,
– inaccessible to the user, or
– provided with a protective device as specified in 22.61.
20 Stability and mechanical hazards
This clause of Part 1 is applicable except as follows.
20.2 Addition:
These requirements do not apply to rotating nozzles.
Modification:
nd
Add the following new Note after the 2 paragraph of the test requirement:
NOTE 101 Appliances according to this standard are not regarded as being intended to be installed in an area open
to the public.
20.101 Machines shall be provided with an OPC (operator presence control) to control the
jet of cleaning agent.
Compliance is checked by inspection and functional test.
20.102 Shaft ends and similar rotating parts shall be protected if they protrude by more than
a quarter of their diameter. Shafts up to 50 mm diameter do not need to be protected if they are
rotating at less than 5 revolutions per second and their ends are rounded and smooth.
Compliance is checked by inspection and measurement, the machine having all elements in
place for normal operation.
The unintentional closing and lowering of doors, lids, covers etc., which could cause injury,
shall be prevented.
Compliance is checked by inspection, by measurement and by functional test.

20.103 Machines heavier than 20 kg (empty) shall be equipped with at least wheels or rollers,
carrying means or the like, to ensure safe transportation. Wheels shall be located or protected
so as to prevent injury to the feet of the operator.
Compliance is checked by inspection, by measurement and by functional test.
20.104 Carrying means shall be of adequate strength to safely transport the machine.
Compliance is checked by inspection and the following test.
Carrying means are subjected to a force corresponding to three times the weight of the machine
but not more than 600 N per carrying means. The force is applied in the direction of lifting
uniformly over a 70 mm width at the centre of the carrying means. The force is steadily
increased so that the test value is attained within 10 s and maintained for a period of 1 min.
If more than one carrying means is provided or if a portion of the weight is distributed over a
wheel, the force is distributed between the carrying means in the same proportion as in the
normal transportation position. If the machine is provided with more than one carrying means,
but so designed tha
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