IEC TR 62627-01:2023
(Main)Fibre optic interconnecting devices and passive components - Part 01: Fibre optic connector cleaning methods
Fibre optic interconnecting devices and passive components - Part 01: Fibre optic connector cleaning methods
IEC TR 62627-01:2023 which is a Technical Report, details cleaning methods for fibre optic connectors. It includes typical cleaning tools and machines, and cleaning procedures. Other cleaning methods exist. The impact of contamination and the reasons for connector visual inspection and cleaning are described in Annex B. This document does not address the visual inspection procedures, which are covered in IEC 61300-3-35. Optical fibre patch cords are handled by the operators and maintenance staff of optical network systems. This document is useful as a guideline to prepare instruction manuals for those involved in optical system maintenance and operation. This document covers fibre optic connector plugs, optical adaptors, optical receptacles (excluding optical transceivers) and dust caps. Guidelines for fibre optic connector end-face cleaning methods for receptacle style optical transceivers are covered in IEC TR 62572-4. This third edition cancels and replaces the second edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- addition of cleaning tools for adhesive pad type and adhesive pen type in terms and definitions (Clause 3), in information (7.5 and 7.6), in fibre optic connectors and their applicable cleaning tools (Table 1 and Clause 8) and procedures (9.5, 9.6 and 9.7);
- addition of classification of cleaning tools and machines (Figure 1).
General Information
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Standards Content (Sample)
IEC TR 62627-01 ®
Edition 3.0 2023-01
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components –
Part 01: Fibre optic connector cleaning methods
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC TR 62627-01 ®
Edition 3.0 2023-01
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components –
Part 01: Fibre optic connector cleaning methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-6362-4
– 2 – IEC TR 62627-01:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 Cleaners . 6
3.2 Fibre optic connector parts. 7
4 Application of fibre optic connectors . 8
4.1 General . 8
4.2 Influence of contamination of fibre optic connector end-faces . 8
5 Guidelines for handling fibre optic connectors. 8
5.1 Guidelines for careful handling fibre optic connectors . 8
5.2 Storage of fibre optic connectors. 8
5.3 Connection of fibre optic connector plugs to ports on optical network
equipment . 8
5.4 Disconnection of fibre optic connector plugs to ports. 9
6 Dust caps . 9
7 Cleaning tools and machines . 9
7.1 General . 9
7.2 Reel type cleaner . 10
7.3 Stick type cleaner . 11
7.4 Pen type cleaner . 11
7.5 Adhesive backed stick type cleaner . 12
7.6 Adhesive pad type cleaner . 12
7.7 Adhesive pen type cleaner . 13
7.8 Gas and vacuum cleaning machine . 13
7.9 Air duster . 13
7.10 Wipe and solvent – Wet cleaning . 14
8 Fibre optic connectors and their corresponding cleaning tools and machines . 14
9 Procedures . 15
9.1 General . 15
9.2 Basic procedure of cleaning . 15
9.3 Procedure to clean exposed plug end-faces with a reel type cleaner . 15
9.4 Procedure for port cleaning using a stick type or a pen type cleaner . 16
9.5 Procedure for port cleaning using an adhesive backed stick type cleaner. 17
9.6 Procedure for plug cleaning using an adhesive pad type cleaner . 17
9.7 Procedure for port cleaning using an adhesive pen type cleaner . 18
9.8 Cleaning procedure using a gas and vacuum type cleaning machine . 18
Annex A (informative) Precautions for the cleaning process . 19
A.1 Material to be cleaned . 19
A.1.1 Plug connector . 19
A.1.2 Plug connector inside adaptors . 19
A.1.3 Adaptor for a cylindrical ferrule plug . 19
A.1.4 Timing of the cleaning . 19
A.2 Additional information . 19
Annex B (informative) General information on contamination . 21
B.1 Impact of contamination . 21
B.1.1 General . 21
B.1.2 High power levels . 21
B.1.3 High data rates . 21
B.2 Source of contamination . 21
B.2.1 Mishandling . 21
B.2.2 Environmental sources . 22
B.2.3 Contamination travels . 22
B.2.4 Contamination migration . 23
B.3 Problems due to end-face contamination . 23
B.3.1 Signal degradation . 23
B.3.2 Permanent damage . 24
Annex C (informative) Example of inspection equipment . 25
Bibliography . 26
Figure 1 – Classification of cleaning tools and machines . 10
Figure 2 – Example of a reel type cleaner . 11
Figure 3 – Example of stick type cleaners . 11
Figure 4 – Example of a pen type cleaner . 12
Figure 5 – Example of an adhesive backed stick type cleaner . 12
Figure 6 – Example of an adhesive pad type cleaner . 12
Figure 7 – Example of an adhesive pen type cleaner . 13
Figure 8 – Example of a gas and vacuum cleaning machine . 13
Figure 9 – Example of an air duster . 14
Figure 10 – Cleaning with a reel type cleaner . 15
Figure 11 – Cleaning ports using a stick type cleaner . 16
Figure 12 – Cleaning ports using a pen type cleaner . 16
Figure 13 – Cleaning ports using an adhesive stick type cleaner . 17
Figure 14 – Cleaning with a pad type cleaner . 18
Figure 15 – Cleaning with an adhesive pen type cleaner . 18
Figure B.1 – Typical examples of contamination . 22
Figure B.2 – Results of mating . 22
Figure B.3 – Contamination migration . 23
Figure B.4 – Signal degradation due to contamination . 23
Figure B.5 – Permanent damage due to contamination . 24
Figure C.1 – Patch-cord inspection and port inspection . 25
Table 1 – Cleaning tools and machines for typical fibre optic connector parts . 14
– 4 – IEC TR 62627-01:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Part 01: Fibre optic connector cleaning methods
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 TR 62627-01 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is a Technical Report.
This third edition cancels and replaces the second edition published in 2016. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of cleaning tools for adhesive pad type and adhesive pen type in terms and
definitions (Clause 3), in information (7.5 and 7.6), in fibre optic connectors and their
applicable cleaning tools (Table 1 and Clause 8) and procedures (9.5, 9.6 and 9.7);
b) addition of classification of cleaning tools and machines (Figure 1).
The text of this Technical Report is based on the following documents:
Draft Report on voting
86B/4625/DTR 86B/4647/RVDTR
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 Technical Report 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/publications.
A list of all parts in the IEC 62627 series, published under the general title Fibre optic
interconnecting devices and passive components, can be found on the IEC website.
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.
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.
– 6 – IEC TR 62627-01:2023 © IEC 2023
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Part 01: Fibre optic connector cleaning methods
1 Scope
This part of IEC 62627, which is a Technical Report, details cleaning methods for fibre optic
connectors. It includes typical cleaning tools and machines, and cleaning procedures. Other
cleaning methods exist. The impact of contamination and the reasons for connector visual
inspection and cleaning are described in Annex B. This document does not address the visual
inspection procedures, which are covered in IEC 61300-3-35.
Optical fibre patch cords are handled by the operators and maintenance staff of optical network
systems. This document is useful as a guideline to prepare instruction manuals for those
involved in optical system maintenance and operation.
This document covers fibre optic connector plugs, optical adaptors, optical receptacles
(excluding optical transceivers) and dust caps. Guidelines for fibre optic connector end-face
cleaning methods for receptacle style optical transceivers are covered in IEC TR 62572-4.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Cleaners
3.1.1
adhesive backed stick type cleaner
cleaning tool for end-faces of fibre optic connector plugs, fibre optic connector receptacles and
fibre optic connector adaptors using a soft adhesive backing at the end of a stick
3.1.2
adhesive pad type cleaner
cleaning tool for end-faces of fibre optic connector plugs using a pad style with soft adhesive
surface
3.1.3
adhesive pen type cleaner
cleaning tool for end-faces of fibre optic connector plugs, fibre optic connector receptacles and
fibre optic connector adaptors using a pen style with a soft adhesive tape at the top of the tool
3.1.4
air duster
canned air
cleaning tool where compressed air is blown from a nozzle of a can
3.1.5
gas and vacuum type cleaning machine
fibre optic connector end-face cleaning machine in which volatile liquid solvent (gas) is injected
and extracted from a nozzle
3.1.6
pen type cleaner
probe type cleaner
cleaning tool for fibre optic connector end-faces, receptacles and fibre optic connector adaptors
where a tape cleaning cloth at the top of the tool moves and cleans
3.1.7
reel type cleaner
cassette type cleaner
fibre optic connector plug end-face cleaning tool, in which a cleaning cloth roll is packed in a
cassette box, with a small window for cleaning
3.1.8
stick type cleaner
swab type cleaner
fibre optic connector receptacle and fibre optic connector adaptor end-face cleaning tool in
which a cleaning cloth is attached to the top of a stick
3.2 Fibre optic connector parts
3.2.1
bulkhead adaptor
adaptor mounted in a panel
Note 1 to entry: A bulkhead adaptor has one or more alignment sleeves in which two or more ferrules are aligned.
3.2.2
dust cap
cover or cap which is attached to a fibre optic connector plug, a fibre optic connector adaptor
or an optical receptacle when the fibre optic connector is not connected to protect it from
contamination
3.2.3
exposed plug end-face
EPE
fibre optic plug without any fixed optical end-face protection that can be held in the hand
EXAMPLE End of a patch cord.
Note 1 to entry: The ferrule is exposed to the air and is not confined within an alignment sleeve of a bulkhead
adaptor or device port. The end-face of the plug is easy to access and can be brought into contact with cleaning
material.
3.2.4
port
open fibre optic alignment sleeve which contains a fibre optic plug end-face to which a fibre
optic plug can be mated
Note 1 to entry: In the case of a bulkhead adaptor, it is the open side of the adaptor after a fibre optic plug has
been inserted into one side. In the case of an optical device, it is the opening into which a user of the device will plug
– 8 – IEC TR 62627-01:2023 © IEC 2023
a patch cord. The mating side of a port can only be accessed through the alignment sleeve. Therefore, the cleaning
material is brought to the end-face through the alignment sleeve.
3.2.5
power blocking shuttered adaptor
optical adaptor that has a shutter to block optical power emitted from a fibre optic connector
plug
Note 1 to entry: An optical adaptor with shutter is a structure that, when two fibre optic connector plugs are
interfaced and the fibre optic connector plug is removed at the shuttered side, the shutter automatically moves to
block emitted optical power. There are two types of optical adaptors with shutter that have already been
commercialized: one focuses on blocking the optical power and the other focuses on dust-proofness. Generally,
power blocking shuttered adaptors that focus on blocking power often have a metal shutter within the optical adaptor.
Note 2 to entry: Refer IEC TR 62627-08.
4 Application of fibre optic connectors
4.1 General
Fibre optic connectors consist of several parts: connector plugs, receptacles, adaptors, dust
caps, etc.
Optical communication network equipment generally has optical adaptors on the front panel or
the back-plane to interface with other equipment or transmission lines. An optical patch cord,
which has fibre optic connector plugs on both ends of an optical fibre cord, is generally used
for optical connection between equipment.
4.2 Influence of contamination of fibre optic connector end-faces
Optical network equipment is located in the central offices, data centres, computer rooms, etc.
The environment of these locations is not necessarily clean, and it is possible that dust or
condensation is introduced onto the fibre optic connector end-faces, which can affect their
optical performances (see Annex B).
5 Guidelines for handling fibre optic connectors
5.1 Guidelines for careful handling fibre optic connectors
Clause 5 describes guidelines for handling fibre optic connectors.
5.2 Storage of fibre optic connectors
Unused ports on optical network equipment, and unused fibre optic connector plugs on optical
patch cords are covered or capped by clean dust caps. It is advisable adusted cap does not
enter into contact with a fibre end-face when fitted. Optical patch cords are stored in clean
closed and sealed boxes or bags. Used dust caps are cleaned before storage. Dust caps are
stored in clean closed and sealed boxes or bags. Storage boxes or bags are ESD (electric static
discharged) processed.
5.3 Connection of fibre optic connector plugs to ports on optical network equipment
For safety reasons, before connection, optical power is off. Dust caps are removed just before
the optical connection is made. Before the optical connection, both the fibre optic connector
end-faces to be mated are inspected, and cleaned if necessary, unless otherwise recommended
by the manufacturer. Annex C shows an example of fibre optic connector end-face visual
inspection equipment. It is advisable the applicable cleaning tools and machines are appropriate
for fibre optic connector plugs and optical adaptors.
Clean fibre optic connector plugs are inserted in ports and mated securely.
5.4 Disconnection of fibre optic connector plugs to ports
Before disconnection, optical power is off.
Immediately after the disconnection, clean dust caps are fitted to fibre optic connector plugs
and ports.
6 Dust caps
Many shapes and materials of dust caps are available in the market. Appropriate dust caps are
fitted. For fibre optic connector plugs, there are typically two types of dust caps: covering the
top of the ferrule, or covering part of the plug housing. It is advisable dust caps have a structure
so that their inner surfaces do not come into contact with the ferrule end-face when dust caps
are fitted. Dust caps are processed to prevent the creation of a static electric charge. Dust caps
are cleaned using an air duster.
7 Cleaning tools and machines
7.1 General
Clause 7 describes cleaning tools and machines for fibre optic connectors.
Cleaning tools and machines are classified as shown in Figure 1.
– 10 – IEC TR 62627-01:2023 © IEC 2023
Figure 1 – Classification of cleaning tools and machines
Fibre optic connector cleaning tools or machines should be used.
Fibre optic connector plugs are easier to clean than optical receptacles or optical adaptors. A
typical cleaning method for fibre optic connector plugs is to wipe the ferrule end-face with a
cloth. As rubbing is possible to produce a static electric charge, which can attract contamination,
it is advisable to use a fibre optic connector cleaner with cloth that has been processed so that
it will not create a static electric charge. Lint-free cloths are also usually used.
Other than a cloth type, adhesive cleaning tools are available. Adhesive cleaning tools do not
produce a static electric charge.
NOTE An ionizer can be useful to neutralize the electrostatic charge which can develop from the cleaning process.
Typical cleaning tools and machines are described in 7.2 to 7.10. This list is not exhaustive.
7.2 Reel type cleaner
A reel type cleaner is used for cleaning fibre optic connector plug end-faces, but is not suited
for cleaning optical receptacles. The cleaning cloth in the reel type cleaner is rolled and packed
in a cassette which has a small window into which the plug end-face is inserted for cleaning.
Figure 2 shows an example of a reel type cleaner. The cleaning process of connector end-faces
with reel type cleaner can result in an electrostatic charge (ESC) effect. Therefore, the cleaning
cloth is processed to prevent the creation of a static el
...
IEC TR 62627-01 ®
Edition 3.0 2023-01
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components –
Part 01: Fibre optic connector cleaning methods
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 Secretariat 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 Products & Services Portal - products.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 have
committee, …). It also gives information on projects, replaced 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 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
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 TR 62627-01 ®
Edition 3.0 2023-01
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components –
Part 01: Fibre optic connector cleaning methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-6443-0
– 2 – IEC TR 62627-01:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 Cleaners . 6
3.2 Optical Fibre optic connector parts . 7
4 Application of optical fibre optic connectors . 8
4.1 General . 8
4.2 Influence of contamination of optical fibre optic connector end-faces . 8
5 Care in Guidelines for handling optical fibre optic connectors . 8
5.1 General Guidelines for careful handling fibre optic connectors . 8
5.2 Storage of optical fibre optic connectors . 8
5.3 Connection of optical fibre optic connector plugs to ports on optical network
equipment . 9
5.4 Disconnection of optical fibre optic connector plugs to ports . 9
6 Dust caps . 9
7 Cleaning tools and machines . 9
7.1 General . 9
7.2 Reel type cleaner . 10
7.3 Stick type cleaner . 11
7.4 Pen type cleaner . 11
7.5 Adhesive backed stick type cleaner . 12
7.6 Adhesive pad type cleaner . 12
7.7 Adhesive pen type cleaner . 13
7.8 Gas and vacuum cleaning machine . 13
7.9 Air duster . 14
7.10 Tissue Wipe and solvent – Wet cleaning . 14
8 Optical Fibre optic connectors and their applicable corresponding cleaning tools
and machines . 14
9 Procedures . 15
9.1 General . 15
9.2 Basic procedure of cleaning . 15
9.3 Procedure to clean exposed plug end-faces with a reel type cleaner . 16
9.4 Procedure for port cleaning using a stick type or a pen type cleaner . 16
9.5 Procedure for port cleaning using an adhesive backed stick type cleaner. 18
9.6 Procedure for plug cleaning using an adhesive pad type cleaner . 18
9.7 Procedure for port cleaning using an adhesive pen type cleaner . 19
9.8 Cleaning procedure using a gas and vacuum type cleaning machine . 19
Annex A (informative) Precautions for the cleaning process . 20
A.1 Material to be cleaned . 20
A.1.1 Plug connector . 20
A.1.2 Plug connector inside adaptors . 20
A.1.3 Adaptor for a cylindrical ferrule plug . 20
A.1.4 Timing of the cleaning . 20
A.2 Additional information . 20
Annex B (informative) General information on contamination . 22
B.1 Impact of contamination . 22
B.1.1 General . 22
B.1.2 High power levels . 22
B.1.3 High data rates . 22
B.2 Source of contamination . 22
B.2.1 Mishandling . 22
B.2.2 Environmental sources . 23
B.2.3 Contamination travels . 23
B.2.4 Contamination migration . 24
B.3 Problems due to end-face contamination . 24
B.3.1 Signal degradation . 24
B.3.2 Permanent damage . 25
Annex C (informative) Example of inspection equipment . 26
Bibliography . 27
Figure 1 – Classification of cleaning tools and machines . 10
Figure 2 – Example of a reel type cleaner . 11
Figure 3 – Example of stick type cleaners . 11
Figure 4 – Example of a pen type cleaner . 12
Figure 5 – Example of an adhesive backed stick type cleaner . 12
Figure 6 – Example of an adhesive pad type cleaner . 13
Figure 7 – Example of an adhesive pen type cleaner . 13
Figure 8 – Example of a gas and vacuum cleaning machine . 14
Figure 9 – Example of an air duster . 14
Figure 10 – Cleaning with a reel type cleaner . 16
Figure 11 – Cleaning ports using a stick type cleaner . 17
Figure 12 – Cleaning ports using a pen type cleaner . 17
Figure 13 – Cleaning ports using an adhesive stick type cleaner . 18
Figure 14 – Cleaning with a pad type cleaner . 18
Figure 15 – Cleaning with an adhesive pen type cleaner . 19
Figure B.1 – Typical examples of contamination . 23
Figure B.2 – Results of mating . 23
Figure B.3 – Contamination migration . 24
Figure B.4 – Signal degradation due to contamination . 24
Figure B.5 – Permanent damage due to contamination . 25
Figure C.1 – Patch-cord inspection and port inspection . 26
Table 1 – Applicable Cleaning tools and machines for typical optical fibre optic
connector parts . 15
– 4 – IEC TR 62627-01:2023 RLV © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Part 01: Fibre optic connector cleaning methods
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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC TR 62627-01:2016. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
IEC TR 62627-01 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is a Technical Report.
This third edition cancels and replaces the second edition published in 2016. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of cleaning tools for adhesive pad type and adhesive pen type in terms and
definitions (Clause 3), in information (7.5 and 7.6), in fibre optic connectors and their
applicable cleaning tools (Table 1 and Clause 8) and procedures (9.5, 9.6 and 9.7);
b) addition of classification of cleaning tools and machines (Figure 1).
The text of this Technical Report is based on the following documents:
Draft Report on voting
86B/4625/DTR 86B/4647/RVDTR
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 Technical Report 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/publications.
A list of all parts in the IEC 62627 series, published under the general title Fibre optic
interconnecting devices and passive components, can be found on the IEC website.
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.
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.
– 6 – IEC TR 62627-01:2023 RLV © IEC 2023
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Part 01: Fibre optic connector cleaning methods
1 Scope
This part of IEC 62627, which is a Technical Report, details cleaning methods for fibre optic
connectors. It includes typical cleaning tools and machines, and cleaning procedures. Other
cleaning methods may exist. The impact of contamination and the reasons for connector visual
inspection and cleaning are described in Annex B. This document does not address the visual
inspection criteria procedures, which are covered in IEC 61300-3-35:2015.
Optical fibre patch cords are handled by the operators and maintenance staff of optical network
systems. This document may be used is useful as a guideline to prepare instruction manuals
for those involved in optical system maintenance and operation.
This document covers fibre optic connector plugs, optical adaptors, optical receptacles
(excluding optical transceivers) and dust caps. Guidelines for optical fibre optic connector end-
face cleaning methods for receptacle style optical transceivers are covered in IEC TR 62572-4.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Cleaners
3.1.1
adhesive backed stick type cleaner
cleaning tool for optical connector end-faces of fibre optic connector plugs, fibre optic connector
receptacles and optical fibre optic connector adaptors using a soft adhesive backing at the end
of a stick
3.1.2
adhesive pad type cleaner
cleaning tool for end-faces of fibre optic connector plugs using a pad style with soft adhesive
surface
3.1.3
adhesive pen type cleaner
cleaning tool for end-faces of fibre optic connector plugs, fibre optic connector receptacles and
fibre optic connector adaptors using a pen style with a soft adhesive tape at the top of the tool
3.1.4
air duster
canned air
cleaning tool where compressed air is blown from a nozzle of a can
3.1.5
gas and vacuum type cleaning machine
optical fibre optic connector end-face cleaning machine in which volatile liquid solvent (gas) is
injected and extracted from a nozzle
3.1.6
pen type cleaner
probe type cleaner
cleaning tool for optical fibre optic connector end-faces, receptacles and optical fibre optic
connector adaptors where a tape cleaning cloth at the top of the tool moves and cleans
3.1.7
reel type cleaner
cassette type cleaner
optical fibre optic connector plug end-face cleaning tool, in which a cleaning cloth roll is packed
in a cassette box, with a small window for cleaning
3.1.8
stick type cleaner
swab type cleaner
optical fibre optic connector receptacle and optical fibre optic connector adaptor end-face
cleaning tool in which a cleaning cloth is attached to the top of a stick
3.2 Optical Fibre optic connector parts
3.2.1
bulkhead adaptor
component in which two or more plugs may be mated
adaptor mounted in a panel
Note 1 to entry: A bulkhead adaptor has one or more alignment sleeves in which two or more ferrules are aligned.
3.2.2
dust cap
cover or cap which is attached to an optical a fibre optic connector plug, an optical a fibre optic
connector adaptor or an optical receptacle when the optical fibre optic connector is not
connected to protect it from contamination
3.2.3
exposed plug end-face
EPE
fibre optic plug without any fixed optical end-face protection that may can be held in the hand
EXAMPLE End of a patch cord.
Note 1 to entry: The ferrule is exposed to the air and is not confined within an alignment sleeve of a bulkhead
adaptor or device port. The end-face of the plug is easy to access and may can be brought into contact with cleaning
material.
– 8 – IEC TR 62627-01:2023 RLV © IEC 2023
3.2.4
port
open fibre optic alignment sleeve which contains a fibre optic plug end-face to which a fibre
optic plug may can be mated
Note 1 to entry: In the case of a bulkhead adaptor, it is the open side of the adaptor after a fibre optic plug has
been inserted into one side. In the case of an optical device, it is the opening into which a user of the device will plug
a patch cord. The mating side of a port can only be accessed through the alignment sleeve. Therefore, the cleaning
material shall be is brought to the end-face through the alignment sleeve.
3.2.5
power blocking shuttered adaptor
optical adaptor that has a shutter to block optical power emitted from an optical a fibre optic
connector plug
Note 1 to entry: An optical adaptor with shutter should have is a structure that, when two optical fibre optic
connector plugs are interfaced and the optical fibre optic connector plug is removed at the shuttered side, the shutter
automatically moves to block emitted optical power. There are two types of optical adaptors with shutter that have
already been commercialized: one focuses on blocking the optical power and the other focuses on dust-proofness.
Generally, power blocking shuttered adaptors that focus on blocking power often have a metal shutter within the
optical adaptor.
Note 2 to entry: Refer IEC TR 62627-08.
4 Application of optical fibre optic connectors
4.1 General
Optical Fibre optic connectors consist of several parts: connector plugs, receptacles, adaptors,
dust caps, etc.
Optical communication network equipment generally has optical adaptors on the front panel or
the back-plane to interface with other equipment or transmission lines. An optical patch cord,
which has optical fibre optic connector plugs on both ends of an optical fibre cord, is generally
used for optical connection between equipment.
4.2 Influence of contamination of optical fibre optic connector end-faces
Optical network equipment is located in the central offices, data centres, computer rooms, etc.
The environment of these locations is not necessarily clean, and it is possible that dust or
condensation is introduced onto the optical fibre optic connector end-faces, which may can
affect their optical performances (see Annex B).
5 Care in Guidelines for handling optical fibre optic connectors
5.1 General Guidelines for careful handling fibre optic connectors
Clause 5 describes general care in guidelines for handling optical fibre optic connectors.
5.2 Storage of optical fibre optic connectors
Unused ports on optical network equipment, and unused optical fibre optic connector plugs on
optical patch cords should be are covered or capped by clean dust caps. A dust cap should not
It is advisable adusted cap does not enter into contact with a fibre end-face when fitted. Optical
patch cords are recommended to be stored in clean closed and sealed boxes or bags. Used
dust caps should be are cleaned before storage. Dust caps should be are stored in clean closed
and sealed boxes or bags. It is recommended that Storage boxes or bags are ESD (electric
static discharged) processed.
5.3 Connection of optical fibre optic connector plugs to ports on optical network
equipment
For safety reasons, before connection, optical power should be is off. Dust caps should be are
removed just before the optical connection is made. Before the optical connection, both the
optical fibre optic connector end-faces to be mated should be are inspected, and cleaned if
necessary, unless otherwise recommended by the manufacturer. Annex C shows an example
of optical fibre optic connector end-face visual inspection equipment. It is advisable the
applicable cleaning tools and machines should be are appropriate for optical fibre optic
connector plugs and optical adaptors.
After inspection of optical connector end-faces, the clean optical Clean fibre optic connector
plugs should be are inserted in ports and mated securely.
5.4 Disconnection of optical fibre optic connector plugs to ports
Before disconnection, optical power should be is off.
Immediately after the disconnection, clean dust caps should be are fitted to optical fibre optic
connector plugs and ports.
6 Dust caps
Many shapes and materials of dust caps are available in the market. Appropriate dust caps
should be are fitted. For optical fibre optic connector plugs, there are typically two types of dust
caps: covering the top of the ferrule, or covering part of the plug housing. It is advisable dust
caps should have a structure so that their inner surfaces do not come into contact with the
ferrule end-face when dust caps are fitted. Dust caps are recommended to be processed to
prevent the creation of a static electric charge. It is recommended that Dust caps should be are
cleaned using an air duster.
7 Cleaning tools and machines
7.1 General
Clause 7 describes cleaning tools and machines for optical fibre optic connectors.
Cleaning tools and machines are classified as shown in Figure 1.
– 10 – IEC TR 62627-01:2023 RLV © IEC 2023
Figure 1 – Classification of cleaning tools and machines
Optical Fibre optic connector cleaning tools or machines should be used.
Optical Fibre optic connector plugs are easier to clean than optical receptacles or optical
adaptors. A typical cleaning method for optical fibre optic connector plugs is to wipe the ferrule
end-face with a cloth. As rubbing may is possible to produce a static electric charge, which may
can attract contamination, it is recommended advisable to use an optical a fibre optic connector
cleaner with cloth that has been processed so that it will not create a static electric charge. Lint-
free cloths are also recommended usually used.
Other than a cloth type, adhesive cleaning tools are available. Adhesive cleaning tools do not
produce a static electric charge.
NOTE An ionizer can be useful to neutralize the electrostatic charge which can develop from the cleaning process.
Typical cleaning tools and machines are described in 7.2 to 7.10. This list is not exhaustive.
7.2 Reel type cleaner
A reel type cleaner is used for cleaning optical fibre optic connector plug end-faces, but is not
suited for cleaning optical receptacles. The cleaning cloth in the reel type cleaner is rolled and
packed in a cassette which has a small window into which the plug end-face is inserted for
cleaning. Figure 2 shows an example of a reel type cleaner. The cleaning process of connector
end-faces with reel type cleaner may can result in an electrostatic charge (ESC) effect.
Therefore it is recommended that, the cleaning cloth has been is processed to prevent the
creation of a static electric charge. The optical fibre optic connector plug end-face to be cleaned
is pressed into then wiped along the cleaning cloth. The cleaning cloth should be is advanced
before every cleaning to prevent contamination.
For the IEC 61754-7 series, type MPO connector plugs with guide-pins, dedicated reel type
cleaners are available in the market.
NOTE Reproduced from OPTIPOP TM, Optical Connector Cleaner, NTT Advanced Technology Corporation website
http://www.ntt-at.com/product/optipop/
©
Source: OPTIPOP , fibre optic connector cleaner, reproduced with the permission of NTT-AT.
Figure 2 – Example of a reel type cleaner
7.3 Stick type cleaner
A stick type cleaner has cleaning cloth on the top of a stick. It is sometimes called a "swab type
cleaner". This cleaner is suitable for optical receptacles and optical adaptors. Figure 3 shows
an example of stick type cleaners.
Lint-free cloths are recommended generally used. Cleaning material should be are processed
to prevent the creation of a static electric charge on the end-face. This type of cleaner should
be is used once only.
There are several thicknesses of stick type cleaners available, depending on the ferrule
diameter.
NOTE Reproduced from CLETOP TM, Optical Connector Cleaner, NTT Advanced Technology Corporation website
http://www.ntt-at.com/product/cletop/.
©
Source: CLETOP , fibre optic connector cleaner, reproduced with the permission of NTT-AT.
Figure 3 – Example of stick type cleaners
7.4 Pen type cleaner
Pen type cleaners have a cleaning cloth on the top of the cleaner. The cleaning cloth rotates
when the top of the cleaner is pressed on the end-face of an optical receptacle, and cleans the
end-face. For some cleaners, as the width of the cleaning cloth limits the area of cleaning, only
– 12 – IEC TR 62627-01:2023 RLV © IEC 2023
the centre of end-faces may can be cleaned. It is recommended that The cleaning cloth has
been is processed to prevent the creation of a static electric charge. The cleaning cloth should
be is lint-free. It is sometimes called a "probe type cleaner". Figure 4 shows an example of a
pen type cleaner.
NOTE Reproduced from NEOCLEAN R, Optical Connector Cleaner, NEOCLEAN R-E Pen Type, NTT Advanced
Technology Corporation website http://www.ntt-at.com/product/neoclean/.
©
Source: NEOCLEAN , fibre optic connector cleaner, NEOCLEAN R-E pen type, reproducted with the permission of
NTT-AT.
Figure 4 – Example of a pen type cleaner
7.5 Adhesive backed stick type cleaner
Adhesive backed stick cleaners have a soft adhesive backing at the top of the cleaner. The
adhesive backed stick cleaner is briefly pressed into and removed from the end-face of an
optical fibre optic connector, receptacle or optical fibre optic connector adaptor whereby the
soft adhesive backing removes dust and other particulates. Figure 5 shows an example of an
adhesive backed stick type cleaner.
NOTE Reproduced from Optres TM, Optical Plug Assembly Cleaner, OPTO LEAF, TOMOEGAWA website
http://opt.tomoegawa.co.jp/english/tech/mochi.html.
TM
Source: Optres , optical plug assembly cleaner, OPTO LEAF, reproduced with the permission of Tomoegawa CO.
LTD.
Figure 5 – Example of an adhesive backed stick type cleaner
7.6 Adhesive pad type cleaner
Adhesive pad type cleaners have a soft adhesive thin sheet filled in a lattice box. A fibre optic
connector plug can be cleaned (removing dusts and other particles) by pressed briefly on a soft
adhesive thin sheet and removed. A soft adhesive thin sheet is contacted the top surface of the
end-face of a fibre optic connector. An adhesive pad type cleaner is available for pinned MPO
connector plugs as the thin sheet is deformed. Figure 6 shows an example of an adhesive pad
type cleaner.
TM
Source: Optres , optical plug assembly cleaner, OPTO LEAF, reproduced with the permission of Tomoegawa CO.
Figure 6 – Example of an adhesive pad type cleaner
7.7 Adhesive pen type cleaner
Adhesive pen type cleaners have a soft adhesive tape at the top of the cleaner. After the soft
adhesive tape is rotated and fresh tape part is placed at the top of the cleaner, the adhesive
pen type cleaner is briefly pressed into and removed from the end-face of an fibre optic
connector plug, fibre optic connector receptacle or fibre optic connector adaptor whereby the
soft adhesive tape removes dust and other particulates, and cleans the end-face. An adhesive
pen type cleaner is available for pinned MPO connector plugs as the tape is deformed. Figure 7
shows an example of an adhesive pen type cleaner.
TM
Source: Optres , optical plug assembly cleaner, OPTO LEAF, reproduced with the permission of Tomoegawa CO.
Figure 7 – Example of an adhesive pen type cleaner
7.8 Gas and vacuum cleaning machine
A volatile liquid solvent is injected and extracted from a nozzle. Contamination is removed by
the solvent. It is advisable liquid should does not enter the cable elements or other parts of a
connector where it cannot be removed. Figure 8 shows an example of a gas and vacuum
cleaning machine.
IEC
NOTE Reproduced from CLEAN BLAST TM, JDS Uniphase Corporation website http://www.jdsu.com/en-us/Test-
and-Measurement/Products/a-z-productlist/Pages/cleanblast-portable.aspx.
– 14 – IEC TR 62627-01:2023 RLV © IEC 2023
TM
Source: CleanBlastPRO , reproduced with the permission of Viavi solutions.
Figure 8 – Example of a gas and vacuum cleaning machine
7.9 Air duster
An air duster is widely used for cleaning electronic and electric equipment. Compressed air is
blown from the nozzle of a can. It is sometimes called "canned air". Examples of materials are
difluoroethane (HFC-152a), trifluoroethane (HFC-143a) or tetrafluoroethane (HFC-134a).
HFC-152a has a lower global warming potentials (GWP) index than HFC-143a, which is better
for the environment. Care should be taken as some air dusters may leave a stain on the ferrule
end-face. Figure 9 shows an example of an air duster.
NOTE Reproduced from http://www.microcareelectronics.com/products/product/voc-free-flux-remover-ultraclean/.
TM
Source: MicroCare , reproduced with the permission of MicroCare.
Figure 9 – Example of an air duster
7.10 Tissue Wipe and solvent – Wet cleaning
The wet cleaning method uses a solvent, such as isopropyl alcohol, with cleaning tissues wipes
for optical elements to clean the optical fibre optic connector end-face. No residue from the
solvent should usually remains after cleaning. Using a solvent prevents the creation of a static
electric charge on the end-face and is sometimes effective for removing sticky contamination.
After wet cleaning, dry cleaning is recommended performed to remove solvent residue. It is
recommended that The cleaning tissues wipes are lint-free.
8 Optical Fibre optic connectors and their applicable corresponding cleaning
tools and machines
Table 1 shows typical optical fibre optic connectors and their applicable corresponding cleaning
tools and machines. For power blocking shuttered adaptors, stick type tools cannot be used as
the cleaning cloth on top of the stick may can be caught by the shutter plate.
Table 1 – Applicable Cleaning tools and
machines for typical optical fibre optic connector parts
Tools and machines Plugs Adaptors/ Power blocking Dust caps
receptacles with shuttered adaptors
connected plugs on with connected
back side plugs on back side
Reel (cassette) recommended Most N/a N/a N/a
type common
Stick type N/a recommended Most N/a N/a
common
Pen type applicable Alternative recommended Most recommended Most N/a
common common
Adhesive backed applicable Alternative recommended Most recommended Most N/a
stick type comon common
Adhesive pad type Most common N/a N/a N/a
Adhesive pen type Alternative Most common Most common N/a
Gas and vacuum applicable Alternative applicable Alternative N/a N/a
Air duster N/a N/a N/a applicable Alternative
Paper Wipe and applicable Alternative N/a N/a N/a
solvent
If dust caps are dirty, clean the caps For dust caps, an alternate method to an air duster, which
is suitable for one single dust cap, is to clean multiple caps at one time using an ultrasonic
cleaner filled with a suitable solvent. Attention is drawn to the fact that liquid cleaning can leave
a residue.
9 Procedures
9.1 General
As described in 5.3, it may can be necessary to inspect and clean both sides and the inside of
the sleeve of a connection before they are mated unless otherwise recommended by the
manufacturer. Precautions for the cleaning process is described in Annex A.
9.2 Basic procedure of cleaning
Unless otherwise recommended by the manufacturer, the basic procedure of cleaning is as
follows.
a) Inspect the optical fibre optic connector end-face for contamination or damage before
cleaning.
b) Dry clean the optical fibre optic connector end-face if contamination, scratches or defects
are found.
c) Inspect the optical fibre optic connector end-face after every cleaning to determine if
contamination has been removed.
d) Repeat b) and c) several times. If contamination still remains, it may can be due to
contamination of the cleaning tools.
e) If contamination remains after dry cleaning several times, try wet cleaning using a solvent.
f) After wet cleaning, dry clean again.
g) Inspect the optical fibre optic connector end-face after every cleaning, and judge according
to the pass/fail criteria.
h) Repeat f) and g) several more times, if needed.
– 16 – IEC TR 62627-01:2023 RLV © IEC 2023
9.3 Procedure to clean exposed plug end-faces with a reel type cleaner
The procedure to clean exposed plug end-faces with a reel type cleaner is as follows.
a) Before cleaning, inspect the plug. If it is clean, do not clean it.
b) First, try a dry cleaning method, as shown in Figure 10:
1) use a designed-for-optics cleaner;
2) clean as per the manufacturer’s instructions;
3) inspect after every cleaning attempt;
4) repeat 2 or 3 times, if needed;
5) if the debris remains it is bonded to the surface or mated-in (not removable).
Figure 10 – Cleaning with a reel type cleaner
c) Next, try a wet-to-dry cleaning method:
1) use a designed-for-optics solvent;
2) do not saturate the cloth or tape: damp is effective, soaking wet is not;
3) clean as per the plug manufacturer’s instructions;
4) wet cleaning shall be followed immediately by dry cleaning. Wet-dry can be one step
(moving from damp to dry on a wipe) or two steps (damp wipe followed by dry wipe);
5) inspect after every cleaning attempt;
6) repeat 2 or 3 times if needed;
7) if the debris remains, it is mated-in (not removable).
d) Compare the plug end-face with the pass/fail criteria to decide to either use of replace the
plug in IEC 61300-3-35 and decide to either use or test the plug against its optical
performance specification (typically attenuation and/or return loss).
It is recommended to follow The plug manufacturer’s instructions are followed for cleaning fibre
optic plugs. Do not clean against a hard surface. When using a wipe or reel type cleaner,
typically one or two 25 mm strokes of the cleaning material is sufficient. Enough pressure shall
be is applied so that the resilient/conforming material allows the wipe to conform to the end-
face geometry of the plug ensuring the entire plug end-face has been cleaned.
9.4 Procedure for port cleaning using a stick type or a pen type cleaner
Plugs that can be removed from an optical adaptor for cleaning should be are removed and
cleaned.
a) Before cleaning, inspect the plug: if it is clean, do not clean it.
b) First, try a dry cleaning method, as shown in Figure 11 and Figure 12:
1) select the designed-for-optics cleaner that corresponds to the plug type/ferrule size;
2) clean as per the plug manufacturer’s instructions;
3) inspect after every cleaning attempt;
4) repeat 2 or 3 times, if needed;
5) if the debris remains, it is bonded to the surface or mated-in (not removable).
Figure 11 – Cleaning ports using a stick type cleaner
Figure 12 – Cleaning ports using a pen type cleaner
c) Next, try a wet -to-dry cleaning method:
1) apply a designed-for-optics solvent to a clean designed-for-optics cleaning wipe;
2) moisten the tip of the cleaning tool by touching it to the solvent spot on the cleaning
wipe;
3) clean as per the plug manufacturer’s instructions;
4) wet cleaning shall be is followed immediately by dry cleaning. Wet-dry can be one step
(moving from damp to dry on a wipe) or two steps (damp wipe followed by dry wipe);
5) inspect after every attempt;
6) repeat 2 or 3 times, if needed;
7) if the debris remains, it is mated-in (not removable);
d) Compare the plug end-face with the pass/fail criteria to decide to either use or replace the
plug in IEC 61300-3-35 and decide to either use or test the plug against its optical
performance specification (typically attenuation and/or return loss).
Select a swab or port cleaning device that is manufactured for the size and type of plug being
cleaned. Do not touch or contaminate the cleaning end of the swab or the port cleaning device.
It is recommended that important the user follow the manufacturer’s instructions for use with all
fibre optic cleaning devices.
Stick type cleaning detail: place the cleaning end of the swab into the port and rotate the swab
while applying appropriate pressure to the plug end-face. Usually, pushing so that the
compression spring in the plug is slightly activated is ideal for 2,5 mm plugs. Rotating the swab
several times is sufficient. The swab should is only be used once and then discarded. If the
user is cleaning an
...
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