draft - world trade organization

DJS IEC 61770: 2019+AMD1: 2019 (IEC 61770:2008+AMD1:2015, IDT)

ICS 91.140.60; 97.030

DRAFT Jamaican Standard

Specification

for

Electric appliances connected to the water mains – Avoidance of backsiphonage and failure of hose-sets

BUREAU OF STANDARDS JAMAICA

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IMPORTANT NOTICE

Jamaican standards are subjected to periodic review. The next amendment will be sent without charge if you cut along the dotted line and return the self-addressed label. If we do not receive this label we have no record that you wish to be kept up-to-date. Our address:

Bureau of Standards Jamaica 6 Winchester Road P.O. Box 113 Kingston 10 Jamaica W.I.

---------------------------(cut along the line)------------------------------------------------------------------------------------------

IEC 61770: 2019 + AMD 1: 2019

NAME OR DESIGNATION…………………………………….………………………………

ADDRESS……………………………………………………….………….……………………

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JBS CERTIFICATION MARK PROGRAMME

The general policies of the JBS Certification Mark Programme are as follows:

- The JBS provides certification services for manufacturers participating in the programme andlicensed to use the gazetted JBS Certification Marks to indicate conformity with JamaicanStandards.

- Where feasible, programmes will be developed to meet special requirements of the submitter.Where applicable, certification may form the basis for acceptance by inspection authoritiesresponsible for enforcement of regulations.

- In performing its functions in accordance with its policies, JBS will not assume or undertake anyresponsibility of the manufacturer or any other party.

Participants in the programme should note that in the event of failure to resolve an issue arising from interpretation of requirements, there is a formal appeal procedure.

Further information concerning the details of the JBS Certification Mark Programme may be obtained from the Bureau of Standards, 6 Winchester Road, Kingston 10.

CERTIFICATION MARKS

Product Certification Marks Plant Certification Mark

Certification of Agricultural Produce Jamaica-Made Mark (CAP) Mark DRAFT JA

MAICAN STANDARD. C

OMMENTS PERIOD ENDIN

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2019

DJS IEC 61770: 2019+AMD1: 2019 ICS 91.140.60; 97.030

Jamaican Standard

Specification

for

Electric appliances connected to the water mains – Avoidance of backsiphonage and failure of hose-sets

Bureau of Standards Jamaica 6 Winchester Road P.O. Box 113 Kingston 10 Jamaica W. I. Tel: (876) 926-3140-5, (876) 618-1534 or (876) 632-4275 Fax: (876) 929-4736 E-mail: [email protected]: www.bsj.org.jm

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mailto:[email protected]

http://www.bsj.org.jm/

DJS IEC 61770: 2019 + AMD1: 2019

© 2019 Bureau of Standards Jamaica All rights reserved. Unless otherwise specified, no part of a Bureau of Standards publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including, photocopying microfilm or scanning, without permission in writing.

ISBN XXX-XXX-XXX-XXX-X

Declared by the Bureau of Standards to be a standard specification pursuant to section 7 of the Standards Act 1969.

First published Month 2019

This standard was circulated in draft form for comments under the reference DJS IEC 61770: 2019 + AMD1: 2019.

Jamaican Standards establish requirements in relation to commodities, processes and practices, but do not purport to include all the necessary provisions of a contract.

The attention of those using this specification is called to the necessity of complying with any relevant legislation.

Amendments

No. Date of Issue Remarks Entered by and date

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DJS IEC 61770: 2019 + AMD1: 2019

iii

Contents

Page National foreword v Acknowledgement vi CONTENTS

1 Scope .......... .... ... .. ...... .. .............. .... .... ... ..... ..... .... ....... ....... .............. .. ............... ....... .... ..5

2 Normative references .. .. ......... ...... .... ... ... ....... .. .............. ................ ........................ ....... .. .. .5

3 Terms and definitions ................... ... ................. .......................... .... ........................................... 5

4 General requirements ...... ... ............................... ................. .. ... ............. ............... ........ ….... .. 6

5 General conditions for the tests .... ....... ........ ... .. ................... ..................................................... 7

6 Airgaps ............................................ ............... ... .. .. .... .. ...... .......... ..... ................................ .... 8

7 Pipe interrupters ................................. ..... .. ........ .......... .. ............... .... .... ................ .. ........ ..... 8

8 Dynamic backflow preventers ....... .. ...... ....................... ....... .... ...... ... ...................................... 9

9 Hose-sets ............................................... .. ....................... ............. ............................... ………... 10

Annex A (normative) Backsiphonage test ... ..... ....... ........ ... .................... ..................................... 21

Figure 1 - Arrangement for the determination of "h" for pipe interrupters ........... .. .... .. …............ 14

Figure 2 - Arrangement for the determination of maximum and critical water levels for

pipe interrupters .......... ......... ................. ............... .................... .... ........... .. ...... ...... ............ ...... 15

Figure 3 - Kinking test .. .. .................... .. .... ............................ ......................... ...... ..... ….. ......... 16

Figure 4 - Arrangement for verifying the resistance of hose-sets to pulses ........................ ……..... 16

Figure 5 - Mandrel for testing coupling nuts ................ ..... ..... ........................ .. ........... .. ............. 17

Figure 6 - Mandrel for ozone test on hose-sets ...... ...... ..... ...... .. .... ...... .. .................................... 17

Figure 7 - Arrangement for the flexing test .................. .. ... ........ .. ................................................ 18

Figure 8 - Arrangement for the bending test ................................ ............ ...... .. .. .......................... 19

Figure 9 - Detail for applying the bending moment to coupling tubes ............................................. 19

Figure 10 - Detail for the impact test on coupling tubes .................................................................. 20

Table 1 - Tests applicable to different types of hoses ...................... ... ....................................... .. . 10

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DJS IEC 61770: 2019 + AMD1: 2019

iv

NOTE Informative Annex – gives additional information intended to assist in the understanding or use of the document. They do not contain requirements. Normative Annex – gives provisions additional to those in the body of a document. They contain requirements.

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DJS IEC 61770: 2019 + AMD1: 2019

v

National foreword

This standard is an adoption of and is identical to the 2.0 edition IEC 61770: 2008 + AMD1: 2015 Electric appliances

connected to the water mains – Avoidance of backsiphonage and failure of hose-sets published by the International

Electrotechnical Commission.

Scope

This International Standard specifies requirements for appliances for household and similar purposes to prevent the

backsiphonage of non-potable water into the water mains. It also specifies requirements for hose-sets used for connecting

such appliances to the water mains that supply water at a pressure not exceeding 1 MPa.

NOTE 1 Examples of similar purposes are the installation of appliances in canteens, restaurants, launderettes and communal

flats.

NOTE 2 This standard does not apply to appliances used for dry cleaning;

- appliances for medical purposes;

- appliances intended for industrial purposes;

- water heaters that are an integral part of the water supply system ;

- water coolers that are an integral part of the water supply system.

NOTE 3 The connection of the appliance to the water mains may be temporary or permanent.

NOTE 4 When reference is made to the water mains, water supplied from a cistern or similar system is also included.

NOTE 5 Many countries have requirements concerning the prevention of contamination of potable water as a result of

contact with unsuitable materials upstream of a backflow prevention device.

Normative references

The following referenced documents are indispensable for the application of this document. For dated references , only the

edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)

applies .

IEC 60730-2-8, Automatic electrical controls for household and similar use - Part 2: Particular requirements for electrically

operated water valves, including mechanical requirements

This standard is compulsory.

Committee representation

The revision of this standard for the Standards Council, established under the Standards Act, 1969 was carried out under the supervision of the Bureau's Electrical Practices and Products Technical Committee, which at the time comprised the following members:

Mr R Campbell (Chairperson)

Mr C Brown (Vice Chair)

Mr. D Bennet t (Technical Secretary)

Mr C Martin

Dr D Muir

Ray Campbell Limited

2A4 International Ltd.

Independent

Consumer Affairs Commission

Caribbean Maritime Univeristy

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DJS IEC 61770: 2019 + AMD1: 2019

vi

Mr E Foster Sparky Licenced Electricians Connection

Mr G Morgan Bureau of Standards Jamaica

Prof H Morris University of the West Indies

Mr J H Dunstan IMAJ & J. H. Dunstan & Associates Ltd.

Mr N Davids National Compliance and Regulatory Authority/ BSJ

Mr R Chambers CESCO Ltd

Ms S Lunan Hardware and Lumber Ltd.

Ms T Smith National Compliance and Regulatory Authority/ BSJ

Mr W Smith Independent

Mrs S Satchell-Knight (Facilitator) Bureau of Standards Jamaica

Ms J Jackson (Recording Secretary) Bureau of Standards Jamaica

Acknowledgment

Acknowledgement is made to the International Electrotechnical Commission (IEC) for permission to adopt IEC 61770: 2008 + AMD1: 2015.

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Standards Council

The Standards Council is the controlling body of the Bureau of Standards Jamaica and is responsible for the policy and general

administration of the Bureau.

The Council is appointed by the Minister in the manner provided for in the Standards Act, 1969. Using its powers in the Standards

Act, the Council appoints committees for specified purposes.

The Standards Act, 1969 sets out the duties of the Council and the steps to be followed for the formulation of a standard.

Preparation of standards documents

The following is an outline of the procedure which must be followed in the preparation of documents:

1. The preparation of standards documents is undertaken upon the Standard Council’s authorisation. This may arise out of

representation from national organisations or existing Bureau of Standards’ Committees or Bureau staff. If the project is

approved it is referred to the appropriate sectional committee or if none exists a new committee is formed, or the project is allotted to the Bureau’s staff.

2. If necessary, when the final draft of a standard is ready, the Council authorises an approach to the Minister in order to obtain the formal concurrence of any other Minister who may be responsible for any area which the standard may affect.

3. The draft document is made available to the general public for comments. All interested parties, by means of a notice in the Press, are invited to comment. In addition, copies are forwarded to those known, interested in the subject.

4. The Committee considers all the comments received and recommends a final document to the Standards Council

5. The Standards Council recommends the document to the Minister for publication.

6. The Minister approves the recommendation of the Standards Council.

7. The declaration of the standard is gazetted and copies placed on sale.

8. On the recommendation of the Standards Council the Minister may declare a standard compulsory.

9. Amendments to and revisions of standards normally require the same procedure as is applied to the preparation of the

original standard.

Overseas standards documents

The Bureau of Standards Jamaica maintains a reference library which includes the standards of many overseas standards

organisations. These standards can be inspected upon request.

The Bureau can supply on demand copies of standards produced by some national standards bodies and is the agency for the sale of

standards produced by the International Organization for Standardization (ISO) members.

Application to use the reference library and to purchase Jamaican and other standards documents should be addressed to:

Bureau of Standards Jamaica

6 Winchester Road P.O. Box 113,

Kingston 10

JAMAICA, W. I.

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