Household and similar electrical appliances - Safety - Part 2-104: Particular requirements for appliances to recover and/or recycle refrigerant from air conditioning and refrigeration equipment

IEC 60335-2-104:2021 is available as IEC 60335-2-104:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60335-2-104:2021 deals with the safety of electrical recovery and/or recycle equipment to recover and/or recycle refrigerant from air conditioning and refrigeration equipment. This applies to air-conditioning, heat-pumps and refrigeration equipment incorporating open drive or motor-compressors, their maximum rated voltages being not more than 300 V for single phase appliances and 600 V for all other equipment.
Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by service personnel in shops, in light industry and on farms, are within the scope of this standard.
The appliances referenced above may consist of one or more factory made assemblies. If provided in more than one assembly, the separate assemblies are to be used together, and the requirements are based on the use of matched assemblies.
This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 1 - The scope has been edited to reflect that "appliance" in this document means recovery and/or recycle equipment to recover and/or recycle refrigerant from air-conditioning and refrigeration equipment.
b) Clause 2 - Normative references were added.
c) Clause 3 - Some definitions were deleted, some were added.
d) Subclause 7.1 - Some markings were deleted, some were added.
e) Subclause 7.6 - Symbols were added for “read operator’s manual”, “operator’s manual; operating instructions” including coloring are placed in visible location; maximum allowable pressure markings following X MPa.
f) Subclause 19.11.4 was modified.
g) Subclause 21.1 was modified.
h) Subclause 21.2 was modified.
i) Subclause 22.102 was modified.
j) Subclause 22.104.1.1 was modified.
k) Subclause 22.104.5 was modified.
l) Subclause 22.104.10 was modified.
m) Subclause 22.104.11 was modified.
n) Subclause 22.105.1 was modified.
o) Subclause 22.107 was modified.
p) Subclause 30.2 was moved to Clause 29.
q) Annex AA was deleted and replaced with Annex AA.
r) Annex BB was deleted and replaced with former IEC 60335-2-104 Annex CC (normative) Compatibility requirements following addition to Annex BB.
s) Annex DD was deleted and replaced with Annex CC.
t) New Annex DD was added.
u) New Annex EE was added.
This part 2 is to be used in conjunction with the fifth edition of IEC 60335-1:2010 and its amendments.

General Information

Status
Published
Publication Date
06-May-2021
Current Stage
PPUB - Publication issued
Completion Date
07-May-2021
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IEC 60335-2-104
Edition 2.0 2021-05
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-104: Particular requirements for appliances to recover and/or recycle
refrigerant from air conditioning and refrigeration equipment
IEC 60335-2-104:2021-05(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

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---------------------- Page: 2 ----------------------
IEC 60335-2-104
Edition 2.0 2021-05
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-104: Particular requirements for appliances to recover and/or recycle
refrigerant from air conditioning and refrigeration equipment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.200; 71.100.45 ISBN 978-2-8322-9784-1

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 60335-2-104:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 General requirement ...................................................................................................... 10

5 General conditions for the tests ..................................................................................... 10

6 Classification ................................................................................................................. 10

7 Marking and instructions ................................................................................................ 11

8 Protection against access to live parts ........................................................................... 12

9 Starting of motor-operated appliances ........................................................................... 13

10 Power input and current ................................................................................................. 13

11 Heating .......................................................................................................................... 13

12 Void ............................................................................................................................... 17

13 Leakage current and electric strength at operating temperature ..................................... 17

14 Transient overvoltages .................................................................................................. 17

15 Moisture resistance ....................................................................................................... 17

16 Leakage current and electric strength ............................................................................ 18

17 Overload protection of transformers and associated circuits .......................................... 18

18 Endurance ..................................................................................................................... 18

19 Abnormal operation ....................................................................................................... 18

20 Stability and mechanical hazards ................................................................................... 23

21 Mechanical strength ...................................................................................................... 23

22 Construction .................................................................................................................. 26

23 Internal wiring ................................................................................................................ 32

24 Components .................................................................................................................. 33

25 Supply connection and external flexible cords ............................................................... 33

26 Terminals for external conductors .................................................................................. 33

27 Provision for earthing .................................................................................................... 33

28 Screws and connections ................................................................................................ 34

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 ............................................................................................................................... 36

Annex AA (normative) Temperature and pressure test ......................................................... 37

Annex BB (normative) Compatibility requirements ................................................................ 39

Annex CC (normative) Pressure tests .................................................................................. 40

CC.1 General ................................................................................................................. 40

CC.2 Pressure test value determined under testing carried out in Clause 11.................. 40

CC.3 Pressure test value determined under testing carried out in Clause 19.................. 40

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IEC 60335-2-104:2021 © IEC 2021 – 3 –
CC.4 Pressure test value determined under testing carried out under standstill

conditions ............................................................................................................. 40

CC.5 Fatigue test option for Clause CC.2 and CC.4 ....................................................... 41

Annex DD (normative) Leak simulation tests ........................................................................ 43

DD.1 General ................................................................................................................. 43

DD.2 Test methods ........................................................................................................ 43

Annex EE (normative) Manual – Installation and operating instructions ................................ 45

Bibliography .......................................................................................................................... 47

Figure 101 – Supply circuit for locked-rotor test of a motor of the single-phase type ............. 35

Table 1 – Temperature limits ................................................................................................ 14

Table 2 – Maximum winding temperature .............................................................................. 19

Table 3 – Maximum abnormal temperature ........................................................................... 22

Table 4 − High side pressure for strength tests ..................................................................... 30

Table 5 – Low side pressure for strength tests ...................................................................... 30

Table BB.1 – Alternate values of time and temperature for the compatibility test ................... 39

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– 4 – IEC 60335-2-104:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-104: Particular requirements for appliances to recover and/or
recycle refrigerant from air conditioning and refrigeration equipment
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment

declared to be in conformity with an IEC Publication.

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 60335-2-104 has been prepared by subcommittee 61D: Appliances for air-conditioning for

household and similar purposes, of IEC technical committee 61: Safety of household and similar

electrical appliances. It is an International Standard.

This second edition cancels and replaces the first edition published in 2003. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) Clause 1 – The scope has been edited to reflect that "appliance" in this document means

recovery and/or recycle equipment to recover and/or recycle refrigerant from air-

conditioning and refrigeration equipment.
b) Clause 2 – Normative references were added.
c) Clause 3 – Some definitions were deleted, some were added.
d) Subclause 7.1 – Some markings were deleted, some were added.
---------------------- Page: 6 ----------------------
IEC 60335-2-104:2021 © IEC 2021 – 5 –

e) Subclause 7.6 – Symbols were added for “read operator’s manual”, “operator’s manual;

operating instructions” including coloring are placed in visible location; maximum allowable

pressure markings following X MPa.
f) Subclause 19.11.4 was modified.
g) Subclause 21.1 was modified.
h) Subclause 21.2 was modified.
i) Subclause 22.102 was modified.
j) Subclause 22.104.1.1 was modified.
k) Subclause 22.104.5 was modified.
l) Subclause 22.104.10 was modified.
m) Subclause 22.104.11 was modified.
n) Subclause 22.105.1 was modified.
o) Subclause 22.107 was modified.
p) Subclause 30.2 was moved to Clause 29.
q) Annex AA was deleted and replaced with Annex AA.

r) Annex BB was deleted and replaced with former IEC 60335-2-104 Annex CC (normative)

Compatibility requirements following addition to Annex BB.
s) Annex DD was deleted and replaced with Annex CC.
t) New Annex DD was added.
u) New Annex EE was added.
The text of this International Standard is based on the following documents:
Draft Report on voting
61D/472/FDIS 61D/474/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/standardsdev/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 fifth edition of IEC 60335-1:2010 and its

amendments.
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 electrical appliances to recover

and/or recycle refrigerant from air conditioning and refrigeration equipment.

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.
---------------------- Page: 7 ----------------------
– 6 – IEC 60335-2-104:2021 © IEC 2021
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 smaller 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 "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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.
The following differences exist in the countries indicated below:
• 6.1: Class 01 appliances are allowed (Japan).

• 11.8: The temperature of the wooden walls in the test casing is limited to 85 °C (Sweden).

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.
---------------------- Page: 8 ----------------------
IEC 60335-2-104:2021 © IEC 2021 – 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.
---------------------- Page: 9 ----------------------
– 8 – IEC 60335-2-104:2021 © IEC 2021
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-104: Particular requirements for appliances to recover and/or
recycle refrigerant from air conditioning and refrigeration equipment
1 Scope
This clause of Part 1 is replaced by the following:

This part of IEC 60335 deals with the safety of electrical recovery and/or recycle equipment

to recover and/or recycle refrigerant from air conditioning and refrigeration equipment. This

applies to air-conditioning, heat-pumps and refrigeration equipment incorporating open drive or

motor-compressors, their maximum rated voltages being not more than 300 V for single phase

appliances and 600 V for all other equipment.

Appliances not intended for normal household use but which nevertheless may be a source of

danger to the public, such as appliances intended to be used by service personnel in shops, in

light industry and on farms, are within the scope of this standard.

The appliances referenced above may consist of one or more factory made assemblies. If

provided in more than one assembly, the separate assemblies are to be used together, and the

requirements are based on the use of matched assemblies.
NOTE 101 In this document, the term appliance is to denote recovery equipment.
2 Normative references
This clause of Part 1 is applicable except as follows.
Replacement:

IEC 60065:2014, Audio, video and similar electronic apparatus − Safety requirements

Addition:

IEC 60079-14, Explosive atmospheres – Part 14: Electrical installations design, selection and

erection

IEC 60079-15:2010 , Explosive atmospheres – Part 15: Equipment protection by type of

protection "n"

IEC 600320 (all parts), Appliance couplers for household and similar general purposes

IEC 60335-2-34:2012, Household and similar electrical appliances – Safety – Part 2-34:

Particular requirements for motor-compressors
____________
Withdrawn.
---------------------- Page: 10 ----------------------
IEC 60335-2-104:2021 © IEC 2021 – 9 –

IEC 60335-2-40:2018, Household and similar electrical appliances – Safety – Part 2-40:

Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers

IEC 62640:2011, Residual current devices with or without overcurrent protection for socket-

outlets for household and similar uses
IEC 62640:2011/AMD1:2015

ISO 5149-2, Refrigerating systems and heat pumps – Safety and environmental requirements

– Part 2: Design, construction, testing, marking and documentation
ISO 817:2014, Refrigerants – Designation and safety classification
ISO 817:2014/AMD1:2017

ASTM D4728-17, Standard Test Method for Random Vibration Testing of Shipping Containers

SAE J2210 HFC-134a (R-134a), Recovery/Recycling Equipment for Mobile Air-Conditioning

Systems

SAE J2843 R-1234yf [HFO-1234yf], Recovery/Recycling/Recharging Equipment for Flammable

Refrigerants for Mobile Air-Conditioning Systems

SAE J3030, Automotive Refrigerant Recovery/Recycling/Recharging Equipment Intended for

use with Both R-1234yf and R-134a
3 Terms and definitions
This clause of part 1 is applicable except as follows.
3.1.6
rated current

Note 101 to entry: If the appliance comprises electrical accessories, including fans, the rated current is based

upon the total maximum electrical power input with all accessories energized, when operating continuously under

the appropriate environmental conditions.
Replacement:
3.1.9
normal operation

conditions that apply when the appliance is mounted as in normal use and is operating under

the most severe operating conditions specified by the manufacturer
3.101
compressor

open drive compressor or motor-compressor (hermetically sealed) with the suction side (low

pressure side) which is intended to be temporarily connected to the appliance’s low pressure

side to remove refrigerant
3.102
pressure-limiting device

mechanism that automatically responds to a predetermined pressure by stopping the operation

of the pressure-imposing element
3.104
recovery

pumping out (removal) of refrigerant from air conditioning or refrigeration equipment

---------------------- Page: 11 ----------------------
– 10 – IEC 60335-2-104:2021 © IEC 2021
3.105
recycle

pumping out (removal) and cleaning of refrigerant from air conditioning or refrigeration

equipment
3.106
refrigerant
substance that is classified by ISO 817 as A1, A2L, A2, A3 or B1
3.107
flammable refrigerant
substance that is classified by ISO 817 as A2L, A2, or A3
3.108
recovery cylinder
receptacle used for recovered refrigerant
3.109
scale
weighing device which is capable of measuring recovered refrigerant
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
Replacement:

5.7 The tests and test conditions of Clause 10 and Clause 11 are carried out under conditions

as in 11.4 or under the most severe operating conditions within the operating temperature range

specified by the manufacturer.
6 Classification
This clause of Part 1 is applicable except as follows.
Modification:

6.1 Appliances shall be of one of the following classes with respect to protection against

electric shock:
class I, class II or class III.
Compliance is checked by inspection and by the relevant tests.
---------------------- Page: 12 ----------------------
IEC 60335-2-104:2021 © IEC 2021 – 11 –
6.2 Addition:

Appliances shall be classified according to degree of protection against harmful ingress of water

in accordance with IEC 60529:

– appliances or parts of appliances intended for outdoor use shall be at least IPX4;

– appliances intended only for indoor use may be IPX0.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Replace the second dash by:

– symbol for nature of supply including number of phases, unless for single phase operation;

Replace the third dash by:
– rated current in amperes;
Addition:
– rated frequency;
– IP rating;
– maximum high and low side pressure;
– each applicable refrigerant for which the appliance is rated;
– for each refrigerant, one of the following:
• the chemical name;
• the refrigerant number (R designation) per ISO 817;

– the recovery cylinder shall meet the pressure of the refrigerant being recovered. Maximum

allowable pressure for the refrigerant circuit; if the permissible excessive operating

pressure for the suction and discharge side differ, a separate indication is required;

– appliances (recovery equipment) intended for use in service garages or other

environments where flammable gases may be present shall be marked: "This appliance

should be used in locations with mechanical ventilation that provides at least four air

changes per hour;

– recovery equipment intended for use in service garages that are covered by SAE J

standards covering recovery equipment for flammable equipment shall be exempt from this

marking and fall under the appropriate SAE or VDA standard.

For flammable refrigerants, any tubing or other devices through which the refrigerant is

intended to be serviced shall be painted or colored red. This color shall be present at all places

where service puncturing, or otherwise creating an opening in the refrigerant circuit might be

expected. In the case of a process tube on a compressor, the color mark shall extend at least

25 mm from the compressor.
---
...

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