IEC 60335-2-79:2012

IEC 60335-2-79 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-79: Particular requirements for high pressure cleaners and steam cleaners

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IEC 60335-2-79 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –

Part 2-79: Particular requirements for high pressure cleaners and steam cleaners

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 97.080 ISBN 978-2-88912-982-9

– 2 – 60335-2-79 © IEC:2012(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 12
5 General conditions for the tests . 12
6 Classification . 12
7 Marking and instructions . 13
8 Protection against access to live parts . 18
9 Starting of motor-operated appliances . 18
10 Power input and current . 19
11 Heating . 19
12 Void. 20
13 Leakage current and electric strength at operating temperature . 20
14 Transient overvoltages . 20
15 Moisture resistance . 20
16 Leakage current and electric strength . 22
17 Overload protection of transformers and associated circuits . 22
18 Endurance . 22
19 Abnormal operation . 23
20 Stability and mechanical hazards . 25
21 Mechanical strength . 26
22 Construction . 28
23 Internal wiring . 32
24 Components . 32
25 Supply connection and external flexible cords . 32
26 Terminals for external conductors . 33
27 Provision for earthing . 33
28 Screws and connections . 33
29 Clearances, creepage distances and solid insulation . 34
30 Resistance to heat and fire . 34
31 Resistance to rusting . 34
32 Radiation, toxicity and similar hazards . 34
Annexes . 37
Annex AA (normative) Requirements to avoid backsiphonage . 38
Annex BB (normative) Analysis method for determining the necessary safety device
to prevent backsiphonage . 44
Annex CC (informative) Emission of acoustical noise . 47
Annex DD (informative) Emission of vibration . 49

60335-2-79 © IEC:2012(E) – 3 –
Annex EE (informative) Model test report for vibration emission at handles of high-
pressure cleaners . 60
Bibliography . 62

Figure 101 – Warning symbol . 34
Figure 102 – Impact test apparatus . 35
Figure 103 – Reactions on handle . 36
Figure 104 – Warning symbol: Machine not suitable for connection to the potable
water mains . 36
Figure 105 – Warning symbol: Do not inhale fumes . 36
Figure AA.1 – Arrangement for the durability test on backflow preventers with reduced
pressure zone . 43
Figure BB.1 – Example for an air break to drain . 46
Figure DD.1 – Trigger gun . 49
Figure DD.2 – Trigger gun with additional side handle . 50
Figure DD.3 – Measurement locations: Spraying device, main and secondary
measuring point . 52
Figure DD.4 – Measurement locations: Spraying device with additional side handle,
main and secondary measuring point . 53
Figure DD.5 – Operating conditions – Position of spraying device . 55

Table 101 – Degree of protection against harmful ingress of water . 13
Table 12 – Pull force and torque . 33
Table AA.1 – Nominal size versus durability test flow rate . 42
Table BB.1 – Matrix of the safety devices appropriate to fluid categories . 45
Table DD.1 – Description and units of the symbols used . 51
Table EE.1 – General information and reported results . 60
Table EE.2 – Measurement results for one machine . 61

– 4 – 60335-2-79 © IEC:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-79: Particular requirements
for high pressure cleaners and steam cleaners

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
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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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 60335-2-79 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.
This third edition cancels and replaces the second edition published in 2002 and its
Amendments 1 (2004) and 2 (2007). It constitutes a technical revision.
The principal changes in this edition as compared with the second edition of IEC 60335-2-79
are as follows (minor changes are not listed):
– the scope has been revised editorially to avoid misunderstandings;
– terms and definitions has been revised with regard to the requirements revised;
– the standard has been revised in general and updated regarding state-of-the-art, as far as
necessary, in particular some changes have been made to Clauses 15, 22, and 25;

60335-2-79 © IEC:2012(E) – 5 –
– a new Annex CC 'Emission of acoustical noise' was added;
– a new Annex DD 'Emission of vibration' was added;
– a new Annex EE with a model test report for vibration emission was added.
The text of this standard is based on the following documents:
FDIS Report on voting
61J/485/FDIS 61J/497/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 fifth edition (2010) 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: Safety requirements for high pressure cleaners
and steam cleaners.
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.

– 6 – 60335-2-79 © IEC:2012(E)
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this standard may be issued at a later date.

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.
60335-2-79 © IEC:2012(E) – 7 –
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 – 60335-2-79 © IEC:2012(E)
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-79: Particular requirements
for high pressure cleaners and steam cleaners

1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of high-pressure cleaners without traction
drive, intended for household and commercial indoor or outdoor use, having a rated pressure
not less than 2,5 MPa and not exceeding 35 MPa.
It also applies to steam cleaners and those parts of hot water high pressure cleaners
incorporating a steam stage which have a capacity not exceeding 100 l, a rated pressure not
exceeding 2,5 MPa and a product of capacity and rated pressure not exceeding 5 MPa·l.
They are not equipped with a traction drive. The following power systems of the drive for the
high pressure pump are covered:
– mains powered motors up to a rated voltage of 250 V for single-phase machines and
480 V for other machines,
– battery powered motors,
– internal combustion engines,
– hydraulic or pneumatic motors.
This standard does not apply to
– high pressure water jet machines having a rated pressure exceeding 35 MPa;
NOTE 101 In Europe, those machines are covered by EN 1829-1.
– steam cleaners intended for domestic use (IEC 60335-2-54);
– hand-held and transportable motor-operated electric tools (IEC 60745 series, IEC 61029
series);
– appliances for medical purposes (IEC 60601);
– agricultural sprayers;
NOTE 102 In Europe, EN 907 gives requirements for sprayers and liquid fertilizer distributors for agricultural and
forestry purposes.
– non-liquid, solid abrasive cleaners;
– machines designed to be part of a production process;
– machines designed for use in corrosive or explosive environments (dust, vapour or gas);
– machines designed for use in vehicles or on board of ships or aircraft.
NOTE 103 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.

60335-2-79 © IEC:2012(E) – 9 –
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60364-1, Low-voltage electrical installations – Part 1: Fundamental principles,
assessment of general characteristics, definitions
IEC 61558-2-3, Safety of transformers, reactors, power supply units and combinations thereof
– Part 2-3: Particular requirements and tests for ignition transformers for gas and oil burners
Replacement:
IEC 61770:2008, Electric appliances connected to the water mains – Avoidance of
backsiphonage and failure of hose-sets
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
conditions under which the machine is operated in normal use
It denotes the operation at rated flow and rated pressure with the appropriate nozzle and
hose line fitted, all strainers and filters in a clean operating condition and the unloader valve
set to the rated pressure. The water heater, if fitted, is operated at maximum power. Electric
motor driven machines are supplied at rated voltage.
Socket outlets for accessories are loaded with a resistive load in accordance with the
marking.
The burner is operated at rated power. Machines designed for operation at more than one
rated power setting are additionally tested at the most disadvantageous power.
On machines designed for use with a flue pipe, a section of flue pipe is attached to the
machine. Flue gas determinations are taken in this flue pipe.
The draught is adjusted as recommended in the instructions.
3.101
unloader valve
pressure operated device which, when the pump pressure exceeds a preset value, releases
the pressure and leads the excess fluid into the inlet system
In addition, it bypasses the total pump flow at reduced pressure when its outlet flow is cut off.
3.102
safety valve
pressure operated device which, when the pump or steam cleaner pressure exceeds a preset
value, releases the pressure and which may return the excess fluid or steam either to the inlet
system or into the atmosphere
3.103
rated pressure
maximum working pressure at the pressure generator during normal operation

– 10 – 60335-2-79 © IEC:2012(E)
3.104
allowable pressure
maximum pressure up to which a machine and/or parts of the machine may be subjected
without impairing its safety
3.105
rated flow
maximum flow at rated pressure at the nozzle during normal operation
3.106
maximum flow rate
highest possible flow rate at the nozzle
Note 1 to entry: Typically, the maximum flow rate occurs at working pressures lower than rated pressure and
with a nozzle designed for spraying of cleaning agents.
3.107
rated temperature
maximum temperature of the cleaning agent during normal operation
3.108
pressure switch
device which, in response to varying fluid pressure, provides a controlling function at a pre-set
value
3.109
flow switch
device which, in response to a varying rate of fluid flow, provides a controlling function at a
pre-set value
3.110
trigger gun
hand-held spraying device where the flow of the cleaning agent is regulated by an integrated
manually operated control device
3.111
pencil jet nozzle
nozzle that gives a concentrated, parallel water jet
Note 1 to entry: Pencil jet nozzles are also known as needle jet nozzles, solid jet nozzles or 0 degree jet
nozzles.
3.112
water jetter
pipe-cleaning device, connected to and controlled by a trigger gun, consisting of a high
pressure hose and a cleaning head with nozzles
3.113
cleaning agent
water with or without the addition of gaseous, soluble or miscible detergent or solid abrasive
3.114
water heater
device for heating the cleaning agent by means of electricity, gas, liquid fuel or heat
exchange
60335-2-79 © IEC:2012(E) – 11 –
3.115
continuous ignition
ignition of an oil or gas fired burner that is continuously maintained throughout the time the
burner is operational, whether the burner is firing or not
3.116
primary safety control
control device that responds directly to flame properties sensing the presence of flame and, in
event of ignition failure or unintentional flame extinguishment, causes safety shut down
Note 1 to entry: Primary safety controls are also known as flame failure devices or flame safety controls.
3.117
motorized cleaning head
hand-held or hand-guided cleaning device connected to the machine, with an integrated
electrical motor
3.118
low pressure accessory
device, connected to and controlled by a trigger gun, with large nozzle openings generating
a pressure below rated pressure
Note 1 to entry: Typical examples of low pressure accessories are washing brushes, foam nozzles, washing
sponges.
3.119
hand-guided machine
machine that needs to be moved on the floor
3.120
hose line
assembly of high pressure hoses mounted with appropriate fittings
3.121
guard
part of the machine specifically designed to provide protection by means of a physical barrier,
such as, for example, a casing, a shield, a cover, a screen, a door, an enclosure or a fence;
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
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.
3.122
operator
person installing, operating, adjusting, cleaning, moving, or performing user maintenance on
the machine
3.123
test solution
a 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 of dodecyl sodium sulphate is C H NaSO .
12 25 4
– 12 – 60335-2-79 © IEC:2012(E)
3.124
reaction force
force which reacts on the spraying device (and thereby on the operator) as a result of the
action force by the water jet leaving the nozzle
Note 1 to entry: The reaction force can also be called recoil force. For other standards with regard to hand-arm-
vibration, the technical term is feed force (e.g. ISO 28927 series) or push force (e.g. ISO 15230) what describes
another force actually. For high-pressure cleaners, the reaction force is the relevant physical dimension.
4 General requirement
This clause of Part 1 is applicable except as follows.
Replacement of the first paragraph by the following:
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 purposes 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 stored in a cool atmosphere and used within seven days after its
preparation.
5.102 Protective devices and safety valves shall remain fully functional but shall not trip
under normal operation.
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.
However, hand-held appliances and hand-held parts of steam cleaners and high pressure
cleaners shall be class II or class III.
Compliance is checked by inspection and by the relevant tests.

60335-2-79 © IEC:2012(E) – 13 –
6.2 Replacement:
The machines shall have a degree of protection against harmful ingress of water according to
Table 101:
Table 101 – Degree of protection against harmful ingress of water
Protection class Protection degree
(electric shock) (IEC 60529)
I – II IPX4
For indoor use only
III IPX3
Steam cleaners For outdoor use I-II-III IPX5
II IPX7
Hand-held parts
III IPX3
Hand-held appliances II-III IPX7
High pressure
Other types of machines I-II-III IPX5
cleaners
Hand-held parts II-III IPX7
However, fixed appliances that are specified for installation in a separate room, where they
will not be subject to spillage or splashing of water, shall be at least IPX0.
Compliance is checked by inspection and by the relevant tests.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
th
7.1 Replace the 4 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.
– the year of construction, that is the year in which the manufacturing process is completed;
– rated pressure in Pascal;
– allowable pressure in Pascal;
– rated flow in litre per minute;
– maximum flow rate in litre per minute, if necessary. The number of flow rate markings is
limited to two;
– maximum rated temperature where this is above 50 °C;
– maximum power of the water heater in kW, if applicable (for electric heaters, the input
power, for gas-fired or oil-fired heaters the output power).

– 14 – 60335-2-79 © IEC:2012(E)
Machines equipped with wheels and other mobile machinery shall be marked with the mass of
the most usual configuration in kg.
A yellow label with black lines showing the substance of the warning symbols in accordance
with Figure 101 shall be permanently fixed to the machine.
Machines shall be marked in addition with the following, if applicable:
– When the surface of a flue or duct for exhaust gases from the heater exceeds a
temperature rise of 60 K, a warning notice shall be fitted near to the hot surface stating
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).
– Steam cleaners shall be marked with symbol IEC 60417-5597 (2002-10).
– Machines not intended to be connected to the potable water mains shall be marked with
the symbol according to Figure 104, coloured as shown or in monochrome colour.
– Machines intended to be used indoors and powered by internal combustion engines,
except LPG-powered engines, shall be marked with the symbol according to Figure 105. It
is acceptable to show this symbol in monochrome colour.
7.1.101 All high pressure hoses shall be marked with the following:
– with a pressure of at least the allowable pressure in Pascal or bar;
– maximum temperature in degrees Celsius;
– business name of the manufacturer of the hose and the date of production. These data
may be coded.
Compliance is checked by inspection.
7.1.102 All high pressure accessories (e.g. trigger gun, spray lance) shall be marked with
the following:
– a pressure of at least the allowable pressure in Pascal or bar;
– maximum temperature in degrees Celsius.
Compliance is checked by inspection.
7.1.103 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 (2002-10).
NOTE This symbol is an information sign and, except for the colours, the rules of ISO 3864-1 apply.
Compliance is checked by inspection.

60335-2-79 © IEC:2012(E) – 15 –
7.1.104 Socket-outlets for accessories shall be marked with the maximum load in watts on
the socket-outlet or close to it.
Compliance is checked by inspection.
7.6 Addition:
[symbol IEC 60417-5597 (2002-10)]  steam
[symbol IEC 60417-5041 (2002-10)]  hot surface
7.12 Modification:
th
Replace the 4 paragraph by the following 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:
CAUTION Read the instructions before using the machine.
This wording may be replaced by symbols ISO 7000-0434 (2004-01) and either
ISO 7000-1641 (2004-01) or 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 101 The designation of series or type can be abstracted, al 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 102 Examples of auxiliary equipment are lights and powered brushes.
– 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 and the maximum inlet water
pressure in Pascal;
– 16 – 60335-2-79 © IEC:2012(E)
– 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
(such as flat tire or component failure).
The instructions shall indicate the type and frequency of inspections and maintenance
required for safe operation including the 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 about appropriate personnel protection equipment (PPE) for high pressure
cleaners in operation, e.g. safety boots, safety gloves, safety helmets with visors, hearing
protection etc. which shall be worn while operating the equipment;
– instructions for water jetters shall be given, such as “Insert hose to red mark before
turning on the machine”;
– adequate information about the connection with the water mains, including the maximum
inlet pressure, if not given on the rating plate;
– adequate information about the nozzles to be used, the danger of the kickback force and
the sudden torque on the spray assembly when opening the trigger gun;
– the kickback forces if they exceed 20 N;
– the functioning of the safety devices, e.g. safety valves, flow switches, pressure
switches;
– for battery powered machines, the precautions to be taken for safe charging;
– information regarding safe disposal of batteries;
– if split rims are used for pneumatic tyres, instructions shall be given for the safe change of
tyres;
– for mains operated machines, the substance of the following:
The electric supply connection shall be made by a qualified electrician and comply with
IEC 60364-1. It is recommended that the electric supply to this machine should include
either a residual current device that will interrupt the supply if the leakage current to earth
exceeds 30 mA for 30 ms or a device that will prove the earth circuit.
– For oil fired machines without a primary safety control, the substance of the following:
This machine must be attended during operation.
– For fixed appliances intended to be used in a dry independent room, and for steam
cleaners intended for indoor use only, the substance of the following:
Do not splash or wash down.
For machines intended to be connected to the potable water mains, the instructions shall give
the following information, if applicable:
– adequate information for the correct connection to the potable water mains;
– necessary length and quality of the water supply hose;
– necessary measures for conversion of the connection from supply from the potable water
mains to supply from other water sources.

60335-2-79 © IEC:2012(E) – 17 –
For machines not intended to be connected to the potable water mains, the instructions shall
give the following information, if applicable:
– adequate information for the correct connection to the water supply;
– adequate information about suction operation;
– necessary length and quality of the water supply hose;
– necessary measures for conversion of the connection from supply from other water
sources to supply from the potable water mains.
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, they
shall include the substance of the following warnings, if applicable.
– WARNING This machine has been designed for use with the cleaning agent supplied or
recommended by the manufacturer. The use of other cleaning agents or
chemicals may adversely affect the safety of the machine.
– WARNING High pressure jets can be dangerous if subject to misuse. The jet must not
be directed at persons, live electrical equipment or the machine itself.
– WARNING Do not use the machine within range of persons unless they wear protective
clothing.
– WARNING Do not direct the jet against yourself or others in order to clean clothes or
foot-wear.
– WARNING Risk of explosion – Do not spray flammable liquids.
– WARNING High pressure cleaners shall not be used by children or untrained personnel.
– WARNING High pressure hoses, fittings and couplings are important for the safety of
the machine. Use only hoses, fittings and couplings recommended by the
manufacturer.
– WARNING To ensure machine safety, use only original spare parts from the
manufacturer or approved by the manufacturer.
– WARNING Water that has flowed through backflow preventers is considered to be non-
potable.
– 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;
• for internal combustion engine powered machines, by removing the ignition key and by
disconnecting the battery.
NOTE Where no ignition key and no battery exist, the disconnection can be achieved by equivalent means.
– WARNING Do not use the machine if a supply cord or important parts of the machine
are damaged, e.g. safety devices, high pressure hoses, trigger gun.
– WARNING Inadequate extension cords can be dangerous. If an extension cord is used,
it shall be suitable for outdoor use, and the connection has to be kept dry
and off the ground. It is recommended that this is accomplished by means of
a cord reel which keeps the socket at least 60 mm above the ground.
– WARNING Do not use combustion engine powered machines indoors unless adequate
ventilation is assessed by national labour authorities.
– WARNING Ensure that any exhaust emissions are not in the vicinity of air intakes.
– WARNING For gas or oil-heated machines it is important to provide adequate
ventilation and make sure that the flue gases are properly discharged.

– 18 – 60335-2-79 © IEC:2012(E)
– WARNING Always s
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