IEC 60335-2-104:2021

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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
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

– 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

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

– 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.
...