IEC 60335-2-119:2021

IEC 60335-2-119 ®
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-119: Particular requirements for commercial vacuum packaging
appliances
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-119: Exigences particulières pour les emballeuses sous vide à usage
commercial
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IEC 60335-2-119 ®
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-119: Particular requirements for commercial vacuum packaging

appliances
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-119: Exigences particulières pour les emballeuses sous vide à usage

commercial
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.030 ISBN 978-2-8322-1016-7

– 2 – IEC 60335-2-119:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 General requirement . 8
5 General conditions for the tests . 8
6 Classification . 8
7 Marking and instructions . 8
8 Protection against access to live parts . 9
9 Starting of motor-operated appliances . 9
10 Power input and current . 9
11 Heating . 9
12 Charging of metal-ion batteries . 10
13 Leakage current and electric strength at operating temperature . 10
14 Transient overvoltages . 10
15 Moisture resistance . 10
16 Leakage current and electric strength . 11
17 Overload protection of transformers and associated circuits . 11
18 Endurance . 11
19 Abnormal operation . 12
20 Stability and mechanical hazards . 12
21 Mechanical strength . 12
22 Construction . 12
23 Internal wiring . 13
24 Components . 13
25 Supply connection and external flexible cords . 13
26 Terminals for external conductors . 13
27 Provision for earthing . 13
28 Screws and connections . 13
29 Clearances, creepage distances and solid insulation . 14
30 Resistance to heat and fire . 14
31 Resistance to rusting . 14
32 Radiation, toxicity and similar hazards . 14
Annexes . 16
Annex AA (informative) Method for calculating the gas concentration . 17
Bibliography . 21

Figure 101 – Splash apparatus . 15
Figure 102 – Weight for mechanical test . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-119: Particular requirements for commercial
vacuum packaging appliances
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 60335-2-119 has been prepared by 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
61/6176/CDV 61/6295/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.

– 4 – IEC 60335-2-119:2021 © IEC 2021
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.
A list of all parts in the IEC 60335 series, published 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 vacuum
packaging appliances.
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.
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.
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.

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 supporting documents on the IEC website:
https://www.iec.ch/tc61/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 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 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.

– 6 – IEC 60335-2-119:2021 © IEC 2021
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-119: Particular requirements for commercial
vacuum packaging appliances
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of commercial electric packaging appliances using
vacuum conditions for food preservation, their rated voltage being not more than 250 V for
single-phase appliances and 480 V for other appliances.
These appliances are not intended for household and similar purposes. They are used for
commercial preservation of food in areas not open to the public, for example in kitchens of
restaurants, canteens, hospitals and in commercial enterprises such as bakeries and butcheries.
Examples of appliances that are within the scope of this standard are:
– chamber vacuum packaging appliances;
– vacuum packaging appliances.
These appliances may be provided with a film-sealing function.
This standard also deals with the hygiene aspects of appliances.
As far as is practicable, this standard deals with the common hazards presented by appliances
that are encountered by users. However, in general, it does not consider young children playing
with the appliance.
Attention is drawn to the fact that:
– for appliances intended to be used in vehicles or onboard ships or aircraft, additional
requirements may be necessary;
– in many countries, additional requirements for appliances incorporating pressure vessels
are specified;
– in many countries, additional requirements are specified by the national health authorities,
the national authorities responsible for the protection of labour, the national water supply
authorities and similar authorities.
This standard does not apply to:
– appliances which operate with injection in the vacuum chamber of inert gas with an oxygen
content exceeding 21 %;
– appliances intended to be used in locations where special conditions prevail, such as the
presence of a corrosive or explosive atmosphere (dust, vapour or gas);
– vacuum packaging appliances for household and similar use (IEC 60335-2-45);
– battery-operated appliances.

2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-52:2017, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
ISO 683-1:2016, Heat-treatable steels, alloy steels and free-cutting steels – Part 1:Non-alloy
steels for quenching and tempering·
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Replacement:
operation of the appliance under the following conditions:
Vacuum packaging appliances and chamber vacuum packaging appliances without
deaeration function are operated empty in vacuum and sealing cycles in accordance with the
instructions, choosing the most unfavourable condition. If no instructions are given, the
appliance is operated for the:
– vacuum function, the maximum period allowed by the construction;
– sealing function, 10 s or the maximum period allowed by a timer, if higher, with a rest period
of 30 s between each cycle.
The sealing function is carried out by sealing together two sheets of plastic film. The plastic film
is high pressure (low density) polyethylene, each sheet having a thickness of 50 μm.
Vacuum packaging appliances and chamber vacuum packaging appliances provided with
deaeration function intended to remove air molecules from liquids, creams and sauces are
operated as indicated above but for 5 min for the vacuum function.
Vacuum packaging appliances and chamber vacuum packaging appliances for vacuum
and sealing and which can perform sealing function only, are also operated for a series of
operating cycles as specified in the instruction for use, choosing the most unfavourable
condition. If no instructions are given, in each cycle the sealing function is operated 10 s.
In all cases the sealing operation period is followed by a further period of 15 s for the appliance
to be ready to perform the next sealing operation.
The sealing function is carried out by sealing together two sheets of plastic film. The plastic film
is high pressure (low density) polyethylene, each sheet having a thickness of 50 µm.
3.5 Definitions relating to types of appliances
3.5.101
vacuum packaging appliance
appliance in which the vacuum function is performed with the packaging outside the vacuum
chamber
Note 1 to entry: Vacuum packaging appliances may be provided with a sealing function.

– 8 – IEC 60335-2-119:2021 © IEC 2021
3.5.102
chamber vacuum packaging appliance
appliance in which the vacuum function is performed with the packaging inside a vacuum
chamber
Note 1 to entry: Chamber vacuum packaging appliances may be provided with a sealing function and/or gas
injection function that avoids crushing of the food.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class I, class II or class III.
6.2 Addition:
Appliances normally used on a table shall be at least IPX3. Other appliances shall be at least
IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition
Appliances which may operate with gas injection in the vacuum chamber, shall be marked with:
– the substance of the following:
WARNING: The oxygen content in the gas shall not exceed 21 %
– the maximum pressure allowed at the injection gas inlet.
7.12 Modification:
The instruction concerning persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge and children playing with the appliance
is not applicable.
7.12.101 For chamber vacuum packaging appliances, the instructions shall include the
substance of the following:
WARNING: Risk of implosion – If the surface of the lid is cracked or damaged, do not use
the appliance and refer to the after sales service for its replacement.

WARNING: Risk of injury – If unintended disconnection of the appliance from the power
supply during the vacuum process leads to blocking the opening mechanism
of the vacuum chamber, do not force the lid to open it and operate as indicated
in the instructions for use.
Instructions for appliances designed to use rigid vacuum containers such as pots and jars shall
draw the attention of the user to the need to verify the maximum vacuum pressure to which
vacuum containers can be subjected without distortion or breakage in case such containers are
not supplied with the appliance or indicated in the instructions for use.
The instructions of appliances provided with a sealing function shall draw the attention of the
user on the fact that some residual heating is present on the sealing bars at the end of the
vacuum process.
For appliances which may operate with gas injection, the instruction shall:
– indicate the name of the gases allowed for injection or at least limit them to inert gases;
– indicate a suitable method for the calculation of the gas concentration in the workroom
based on the type of gas used, considering as worst-case scenario the one when the gas
inlet valve in the appliance is permanently open. Information on how to calculate the gas
concentration is given in informative Annex AA;
– draw the attention of the user on the need to close the gas supply each time the appliance
is not in use;
– draw the attention of the user on the need to verify the concentration of gas in the workroom
and to take adequate precautions (e.g. to provide suitable room ventilation), in case the
calculated amount of gas concentration reaches dangerous levels;
– the instructions shall state the substance of the following warnings:
• WARNING: To avoid risk of high flammability or explosion − The oxygen percentage in
the gas shall be maximum 21 %.
• WARNING: To avoid risk of suffocation − If injection gas is used, an appropriate air
exchange rate shall be ensured in the workroom;
– if a pressure reducer is not incorporated in the appliance, the instructions shall indicate that
a suitable pressure reducer shall be applied at the customer’s site to ensure that the
maximum applied pressure corresponds to the one marked on the appliance.
8 Protection against access to live parts
This clause of Part 1 is applicable.
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 Replacement:
– 10 – IEC 60335-2-119:2021 © IEC 2021
The appliance is operated under normal operation until steady conditions are established.
Appliance outlets accessible to the user and socket-outlets accessible to the user are loaded
with a resistive load that gives the marked outlet load.
12 Charging of metal-ion batteries
This clause of Part 1 is not applicable.
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
15 Moisture resistance
This clause of Part 1 is applicable except as follows.
15.1.1 Addition:
In addition, appliances, except those marked IPX5 and IPX6, are subjected for 5 min to the
following splash test.
The apparatus shown in Figure 101 is used. The appliance is placed in normal position of use
and adjustable feet shall be set at minimum level in accordance with the instruction for use.
For appliances normally used on the floor, the bowl is placed on the floor and is moved around
in such a way as to splash the sides of the appliance from all directions. During the test, the
water pressure is so regulated that the water splashes up 150 mm above the bottom of the bowl.
For all other appliances, the bowl is placed on the same plane where the appliance is placed
and is moved around in such a way as to splash the sides of the appliance from all directions.
During the test, the water pressure is so regulated that the water splashes up 100 mm above
the bottom of the bowl. The appliance shall not be hit by the direct jet.
15.2 Addition:
Compliance is also checked by the tests of 15.2.101 and 15.2.102.
15.2.101 For all appliances, 0,5 l of the spillage solution is poured rapidly over the top of the
appliance in the most unfavourable way so that the spillage solution also flows over the surfaces
of the appliance that incorporate controls and other places where it may penetrate the appliance
enclosure, the controls being placed in the most unfavourable position. The controls are then
operated through their working range, this operation being repeated after 5 min.
For chamber vacuum packing appliances, the test is carried out with the lid placed in the fully
open or fully closed position, whichever is likely to be the most unfavourable.
For appliances having a working surface, the test is repeated with the appliance tilted at an
angle of 2° in relation to the position of normal use in the direction which is likely to be the most
unfavourable.
The lid of top loading appliances is considered as a working surface if it is flat enough to put
something on.
Additional action, like drying of tested areas, may be needed to ensure that first pouring test
does not impact the result of the second one.
The appliance shall withstand the electric strength test of 16.3 and inspection shall show that
there is no trace of water on insulation that could result in a reduction of clearances and
creepage distances below the values specified in Clause 29.
15.2.102 Parts liable to be cleaned are wiped in turn, with a sponge, having dimensions
approximately 150 mm × 75 mm × 50 mm, saturated with water containing approximately 1 %
NaCl. The sponge is applied without appreciable force for approximately 10 s to each surface.
After each cleaning test, all residues are removed, and the appliance is dried to ensure that a
cleaning test is not impacted by a preceding one.
The appliance shall then withstand the electric strength test of 16.3 and inspection shall show
that there is no trace of water on the insulation that could result in a reduction of clearances
and creepage distances below the values specified in Clause 29.
15.101 Packaging appliances shall be constructed so that suction of liquid does not impair
electrical insulation. This requirement does not apply to parts operating at safety extra-low
voltage.
Compliance is checked by the following tests.
For vacuum packaging appliances, one plastic channelled bag with dimensions 20 cm ×
30 cm filled with water containing approximately 1 % NaCl, at a temperature of 30 °C ± 0,5 °C,
is positioned so that the surface of the water is at the same level as the suction opening of the
appliance. Then the vacuum and sealing process is performed.
NOTE Channelled vacuum bags are vacuum bags specifically designed to allow air to escape easily from the bag.
For chamber vacuum packaging appliances, a quantity of water at a temperature of 30 °C
± 0,5 °C containing approximately 1 % NaCl and equal to 10 % of the volume of the vacuum
chamber is poured in the chamber. Then the vacuum and sealing process is performed.
The appliance shall then withstand the electric strength test of 16.3 and inspection shall show
that there is no trace of water on the insulation that could result in a reduction of clearances
and creepage distances below the values specified in Clause 29.
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 not applicable.

– 12 – IEC 60335-2-119:2021 © IEC 2021
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Addition:
Appliances are also subjected to the tests of 19.101, 19.102 and 19.103.
19.101 The appliance is supplied at rated voltage and operated under normal operation.
The vacuum pump is operated until a non-self-resetting thermal cut-out operates or until
steady conditions are established.
19.102 The oil anti back-flow device is rendered inactive and the appliance is operated under
the conditions specified in Clause 11.
After the test, the appliance is checked by inspection and no traces of oil shall be detected on
any part of the vacuum chamber and its lid.
19.103 The vacuum pump is operated continuously for 5 min, with the appliance supplied at
rated voltage.
No traces of oil shall be detected on the pump outlets or on any component of the appliance.
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable except as follows.
21.101 The top surface of chamber vacuum packaging appliances shall withstand the
stresses liable to occur in normal use.
Compliance is checked by the following test.
The appliance is operated as in normal use at maximum vacuum setting according to the
instructions, with gas injection, if any, not operating and for one cycle of operation.
The vacuum pressure is monitored; when it reaches its maximum value during the vacuum cycle,
a weight of 5 kg as shown in Figure 102 is dropped from a height of 1 m on the geometrical
centre of the cover of the appliance. The weight is made from C40 steel as specified in
ISO 683-1:2016.
To ensure a correct impact point, the weight shall be guided, taking care that the guide does
not influence the impact energy.
During the test, either the cover shall not break or, if it breaks, no particles shall be ejected to
a distance of more than 10 cm around any part of the appliance.
22 Construction
This clause of Part 1 is applicable except as follows.

22.101 For chamber vacuum packaging appliances, hinged lids shall be protected against
accidental closing.
Compliance is checked by the following test.
The appliance is placed in any normal position of use on a plane inclined at an angle of 10° to
the horizontal in the most unfavourable position and with the lid open.
The lid shall not close.
22.102 If appliances incorporate food areas or splash areas, the surfaces of such areas shall
be cleanable so that all unwanted matter can be removed. If necessary, food areas shall be
capable of being disinfected.
The food area comprises surfaces in contact with the food and surfaces that the food may
contact during preparation of the product. The splash area comprises surfaces on which part of
the food may splash or flow during normal use, but this food does not become part of the product.
Compliance is checked by inspection after having operated the appliance as in normal use and
then cleaning and disinfecting it in accordance with the instructions for use.
22.103 If appliances incorporate food areas, non-food areas that are not adequately separated
from food areas shall be constructed so that the retention of moisture or unwanted matter, and
the ingress of vermin, is prevented.
Compliance is checked by inspection.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable.
25 Supply connection and external flexible cords
This clause of Part 1 is applicable.
26 Terminals for external conductors
This clause of Part 1 is applicable.
27 Provision for earthing
This clause of Part 1 is applicable.
28 Screws and connections
This clause of Part 1 is applicable.

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29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable except as follows.
29.2 Addition:
The microenvironment is pollution degree 3 and the insulation shall have a comparative tracking
index (CTI) not less than 250, unless the insulation is enclosed or located so that it is unlikely
to be exposed to pollution during normal use of the appliance due to:
– condensation produced by the appliance;
– the use of liquids and solids, such as ingredients, products, or cleaning agents.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.3 Not applicable.
31 Resistance to rusting
This clause of Part 1 is applicable except as follows.
Addition:
For surfaces of food areas and splash areas compliance is checked by the salt mist test Kb of
IEC 60068-2-52:2017, Test method 1.
After the test, the appliance shall not have deteriorated to such an extent that compliance with
this standard, in particular with Clauses 8 and 27, is impaired. No visible traces of rusting shall
be detected.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.

Dimensions in millimetres
Key
A Bowl
Figure 101 – Splash apparatus
Dimensions in millimetres
Figure 102 – Weight for mechanical test

– 16 – IEC 60335-2-119:2021 © IEC 2021
Annexes
The annexes of Part 1 are applicable except as follows.

Annex AA
(informative)
Method for calculating the gas concentration
AA.1 Calculation of gas concentration
The following information shall be considered by the manufacturer. If the manufacturer does
not clearly specify and limit the size of the working space and the gas cylinder, the following
information shall be given in the instructions.
AA.2 Calculations for safe operation with protective gases (modified
atmosphere packaging)
AA.2.1 Guidance for the evaluation of ventilation requirements
The ventilation requirements depend on numerous factors such as location, type of gas and
possible leaks. Ventilation can be natural or forced ventilation. The normal index to be
considered is the number of air exchanges per hour.
Typically, the required number of air exchanges can be calculated based on an estimated gas
outlet or leakage rate of a machine in operation. A homogeneous gas distribution is assumed,
and the following formula is applied:
-nt×
Le× 1-
( )
C =
t
Vn×
r
where
C is the gas concentration at time t;
t
L is the gas flow [m /h];
V is the volume of the room [m ];
r
n are the air exchanges per hour;
t is the time of gas flow in hours.
For long periods of time (t with a tendency towards infinity), the following applies:
L
C∞=
Vn ×
r
Since this calculation refers to continuous gas discharge, the goal shall be to keep the oxygen
concentration between 20 % and 22 % by sufficient ventilation (air exchanges).
Natural air ventilation rates can be evaluated as follows:
• In above-ground locations without special ventilation openings, natural ventilation generally
achieves one air exchange per hour. However, this does not apply to buildings in which the
windows are gas tight.
• If special ventilation openings are available, up to two air changes per hour can be assumed.
• For underground rooms with small windows, an average natural air exchange rate of 0,4 per
hour can be assumed.
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• For more than 2 air exchanges per hour a forced ventilation system is required.
Special building regulations may recommend or require a specific number of air exchanges per
hour for different conditions, i.e. 5, 10, 20.
In case of doubt on required air exchanges, contact an appropriately licensed ventilation
technician or refer to building regulations concerning the specific installation.
AA.2.2 Calculation for the use of gas cylinders in rooms
This requirement deals with the worst-case scenario, where the entire contents of a gas cylinder
or storage container leak into the room immediately as a result of a catastrophic failure, such
as a burst hose, a leaking pipe connection or a permanently open gas valve. The trigger for
such an event could be the failure of a regulator.
In the event of such a catastrophic scenario, mastering the situation is initially more important
than trying to restore an atmosphere suitable as a working environment. For this reason, an
oxygen concentration of 25 % is acceptable in the short term.
The calculation can also be performed for oxygen replacing gases. In this case, it is essential
that the oxygen concentration shall not fall be
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