INTERNATIONAL STANDARD NORME INTERNATIONALE

Provläsningsexemplar / Preview
®
IEC 62841-4-1
Edition 1.0 2017-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-1: Particular requirements for chain saws
IEC 62841-4-1:2017-10(en-fr)
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-1: Exigences particulières pour les scies à chaîne
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2017 IEC, Geneva, Switzerland
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.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
info@iec.ch
www.iec.ch
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 corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue
The stand-alone application for consulting the entire
bibliographical information on IEC International Standards,
Technical Specifications, Technical Reports and other
documents. Available for PC, Mac OS, Android Tablets and
iPad.
Electropedia - www.electropedia.org
The world's leading online dictionary of electronic and
electrical terms containing 20 000 terms and definitions in
English and French, with equivalent terms in 16 additional
languages. Also known as the International Electrotechnical
Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub
The advanced search enables to find IEC publications by a
variety of criteria (reference number, text, technical
committee,…). It also gives information on projects, replaced
and withdrawn publications.
IEC Glossary - std.iec.ch/glossary
65 000 electrotechnical terminology entries in English and
French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published
details all new publications released. Available online and
also once a month by email.
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: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue
Application autonome pour consulter tous les renseignements
bibliographiques
sur
les
Normes
internationales,
Spécifications techniques, Rapports techniques et autres
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
Android et iPad.
Recherche de publications IEC - www.iec.ch/searchpub
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte,
comité d’études,…). Elle donne aussi des informations sur les
projets et les publications remplacées ou retirées.
IEC Just Published - webstore.iec.ch/justpublished
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues.
Disponible en ligne et aussi une fois par mois par email.
Electropedia - www.electropedia.org
Le premier dictionnaire en ligne de termes électroniques et
électriques. Il contient 20 000 termes et définitions en anglais
et en français, ainsi que les termes équivalents dans 16
langues additionnelles. Egalement appelé Vocabulaire
Electrotechnique International (IEV) en ligne.
Glossaire IEC - std.iec.ch/glossary
65 000 entrées terminologiques électrotechniques, en anglais
et en français, extraites des articles Termes et Définitions des
publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
CISPR de l'IEC.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
®
IEC 62841-4-1
Edition 1.0 2017-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-1: Particular requirements for chain saws
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-1: Exigences particulières pour les scies à chaîne
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20
ISBN 978-2-8322-4754-9
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
–2–
IEC 62841-4-1:2017 © IEC 2017
CONTENTS
FOREWORD ........................................................................................................................... 4
1
Scope .............................................................................................................................. 6
2
Normative references ...................................................................................................... 6
3
Terms and definitions ...................................................................................................... 7
4
General requirements ...................................................................................................... 8
5
General conditions for the tests ....................................................................................... 8
6
Radiation, toxicity and similar hazards ............................................................................. 9
7
Classification ................................................................................................................... 9
8
Marking and instructions .................................................................................................. 9
9
Protection against access to live parts ........................................................................... 12
10
Starting ......................................................................................................................... 12
11
Input and current ........................................................................................................... 12
12
Heating .......................................................................................................................... 12
13
Resistance to heat and fire ............................................................................................ 12
14
Moisture resistance ....................................................................................................... 12
15
Resistance to rusting ..................................................................................................... 13
16
Overload protection of transformers and associated circuits .......................................... 13
17
Endurance ..................................................................................................................... 13
18
Abnormal operation ....................................................................................................... 13
19
Mechanical hazards ....................................................................................................... 14
20
Mechanical strength ...................................................................................................... 19
21
Construction .................................................................................................................. 20
22
Internal wiring ................................................................................................................ 22
23
Components .................................................................................................................. 22
24
Supply connection and external flexible cords ............................................................... 23
25
Terminals for external conductors .................................................................................. 24
26
Provision for earthing .................................................................................................... 24
27
Screws and connections ................................................................................................ 24
28
Creepage distances, clearances and distances through insulation ................................. 24
Annexes ............................................................................................................................... 30
Annex I (informative) Measurement of noise and vibration emissions ................................... 30
Annex K (normative) Battery tools and battery packs ........................................................... 37
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources ......................................................................................................... 42
Annex AA (normative) Safety signs ...................................................................................... 46
Annex BB (informative) Examples of instructions concerning the proper techniques for
basic felling, limbing, and cross-cutting ................................................................................. 48
Annex CC (informative) Example of a material and construction for fulfilling the
requirements for an artificial surface ..................................................................................... 52
Bibliography .......................................................................................................................... 54
Figure 101 – Chain saw nomenclature .................................................................................. 24
Figure 102 – Cutting length ................................................................................................... 25
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
–3–
Figure 103 – Holding the chain saw ...................................................................................... 26
Figure 104 – Minimum rear hand guard dimensions .............................................................. 26
Figure 105 – Straight test probe ............................................................................................ 27
Figure 106 – Measuring direction of static activation force F ................................................. 27
Figure 107 – Impact direction and pendulum ......................................................................... 28
Figure 108 – Saw chain drive link spacing ............................................................................ 28
Figure 109 – Chain saw balance ........................................................................................... 29
Figure 110 – Test assembly for accessibility of attachment plug blades ............................... 29
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) ........................... 35
Figure I.102 – Positions of transducers for chain saws .......................................................... 36
Figure BB.101 – Description of felling: escape routes ........................................................... 49
Figure BB.102 – Description of felling: undercutting .............................................................. 50
Figure BB.103 – Tree limbing ................................................................................................ 50
Figure BB.104 – Log supported along the entire length ......................................................... 50
Figure BB.105 – Log supported one end ............................................................................... 51
Figure BB.106 – Log supported both ends ............................................................................ 51
Figure BB.107 – Cross-cutting/bucking a log ......................................................................... 51
Figure CC.1 – Sketch of the measurement surface covered with an artificial surface
(not to scale)......................................................................................................................... 53
Table 4 – Required performance levels ................................................................................. 14
Table I.101 – Co-ordinates of microphone positions .............................................................. 32
Table I.102 – Absorption coefficients .................................................................................... 32
Table I.103 – Test conditions ................................................................................................ 35
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
–4–
IEC 62841-4-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –
Part 4-1: Particular requirements for chain saws
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 nongovernmental 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.
International Standard IEC 62841-4-1 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
The text of this International Standard is based on the following documents:
FDIS
Report on voting
116/339/FDIS
116/344/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
–5–
This Part 4-1 is to be used in conjunction with the first edition of IEC 62841-1 (2014).
This Part 4-1 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for chain saws.
Where a particular subclause of Part 1 is not mentioned in this Part 4-1, that subclause
applies as far as relevant. Where this standard states “addition”, “modification” or
“replacement”, the relevant text in Part 1 is to be adapted accordingly.
The following print types are used:
–
requirements: in roman type;
–
test specifications: in italic type;
–
notes: in small roman type;
–
terms defined in Clause 3: in bold typeface.
Subclauses, notes, tables and figures which are additional to those in Part 1, except as
described for Annex K and Annex L below, are numbered starting from 101.
Subclauses, notes, tables and figures in Annex K and Annex L which are additional to those in
the main body of this Part 4-1 as well as Annex K and Annex L of Part 1 are numbered
starting from 301.
A list of all parts of the IEC 62841 series, under the general title: Electric motor-operated
hand-held tools, transportable tools and lawn and garden machinery – Safety, 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 "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 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 36 months from the date of publication.
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.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
–6–
IEC 62841-4-1:2017 © IEC 2017
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –
Part 4-1: Particular requirements for chain saws
1
Scope
This clause of Part 1 is applicable, except as follows:
Addition:
This standard applies to chain saws for cutting wood and designed for use by one person.
This standard does not cover chain saws designed for use in conjunction with a guide-plate
and riving knife or in any other way such as with a support or as a stationary or transportable
machine.
This standard does not apply to
–
chain saws for tree service as defined in ISO 11681-2; or
–
pole-mounted pruners.
NOTE 101
Pole-mounted pruners will be covered by a future part of IEC 62841.
The chain saws covered by this standard are designed only to be operated with the right
hand on the rear handle and the left hand on the front handle.
2
Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
IEC 61672-1, Electroacoustics – Sound level meters – Part 1: Specifications
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
noise sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 6533:2012, Forestry machinery – Portable chain-saw front hand-guard – Dimensions and
clearances
ISO 6534:2007, Forestry machinery – Portable chain-saw hand-guards – Mechanical strength
ISO 7914:2002, Forestry machinery – Portable chain-saws – Minimum handle clearance and
sizes
ISO 7915:1991, Forestry machinery – Portable chain-saws – Determination of handle strength
ISO 9518, Forestry machinery – Portable chain-saws – Kickback test
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
–7–
ISO 10726:1992, Portable chain-saws – Chain catcher – Dimensions and mechanical strength
ISO 11681-2:2011, Machinery for forestry – Portable chain-saw safety requirements and
testing – Part 2: Chain-saws for tree service
ISO 13772:2009, Forestry machinery – Portable chain saws – Non-manually actuated chain
brake performance
ISO 17080:2005, Manually portable agricultural and forestry machines and powered lawn and
garden equipment – Design principles for single-panel product safety labels
ISO 22868:2011, Forestry and gardening machinery – Noise test code for portable hand-held
machines with internal combustion engine – Engineering method (Grade 2 accuracy)
3
Terms and definitions
This clause of Part 1 is applicable, except as follows:
3.101
bar tip guard
shield that prevents contact with the saw chain at the tip of the guide bar
3.102
chain brake
function or device for stopping the saw chain activated manually or non-manually when
kickback occurs
3.102.1
manually activated chain brake
braking function triggered by the hand of the operator
3.102.2
non-manually activated chain brake
braking function triggered by kickback motion independent of operator activation
3.103
chain catcher
device for restraining the saw chain if it breaks or derails (see Figure 101)
3.104
chain saw
machine designed to cut wood with a saw chain and consisting of an integrated unit of
handles, motor, guide bar and saw chain, designed to be supported with two hands (see
Figure 101)
3.105
cutting length
approximate effective length of cut of the chain saw
Note 1 to entry:
The method for determining cutting length is specified in 21.101.
3.106
drive sprocket
chain drive wheel with teeth
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
–8–
IEC 62841-4-1:2017 © IEC 2017
3.107
front hand guard
guard between the front handle and the saw chain for protecting the hand from injuries if the
hand slips off the handle (see Figure 101)
3.108
front handle
support handle located at or towards the front of the machine (see Figure 101)
3.109
guide bar
attachment that supports and guides the saw chain (see Figure 101)
3.110
kickback
rapid upward and/or backward motion of the chain saw which can occur when the moving
saw chain contacts an object such as a log or branch near the tip of the guide bar or when
the wood closes in and pinches the moving saw chain
3.111
maximum speed
highest saw chain speed attainable under all conditions of normal use, including no-load
3.112
operator presence sensor
device to detect the presence of an operator’s hand
3.113
rear hand guard
extension on the lower part of the rear handle for protecting the hand from the saw chain if it
breaks or derails (see Figure 101)
3.114
rear handle
support handle located towards the rear of the machine (see Figure 101)
3.115
saw chain
attachment, serving as a cutting tool, consisting of drive links and cutters (see Figure 101
and Figure 108)
3.116
spiked bumper
device, fitted in front of the guide bar mounting point, acting as a pivot when in contact with a
tree or log (see Figure 101 and Figure 102)
4
General requirements
This clause of Part 1 is applicable.
5
General conditions for the tests
This clause of Part 1 is applicable, except as follows:
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
5.14
–9–
Addition:
For tests carried out at any percentage of rated input or rated current, except for no-load,
the saw chain and the guide bar may be removed and the chain saw loaded by means of a
brake.
5.17
Addition:
The mass of the machine includes the heaviest guide bar and saw chain combination in
accordance with 8.14.2 c) 101) as well as the lubrication tank, if any, filled to the maximum
specified level, but excludes the guide bar cover.
5.101 For tests that are performed at maximum speed and no-load, the manufacturer may
need to provide special hardware and/or software.
6
Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
7
Classification
This clause of Part 1 is applicable.
8
Marking and instructions
This clause of Part 1 is applicable, except as follows:
8.2
Addition:
Chain saws shall be marked with safety information which shall be written in one of the
official languages of the country in which the machine is to be sold or marked with the
appropriate symbol:
–
“Wear eye protection” or a relevant safety sign of ISO 7010 or the safety sign specified in
Annex AA;
–
“Wear ear protection”, a relevant safety sign of ISO 7010 or the safety sign specified in
Annex AA. This marking may be omitted if the measured sound pressure level at the
operator’s ear in accordance with Annex I does not exceed 85 dB(A).
A combination of ISO safety signs, such as eye, ear, dust and head protection, is allowed. In
addition, a combination of safety signs as specified in Annex AA is allowed.
–
“Do not expose to rain” or the safety sign specified in Annex AA, unless the chain saw
has a degree of protection of at least IPX4.
–
"Beware of chain saw kickback
ISO 17080:2005.
–
and avoid
contact
with bar
tip”, or
A.1.3 of
“Always use chain saw two-handed” or A.3.1 of ISO 17080:2005.
For mains supplied machines:
“Remove plug from the mains immediately if the cable is damaged or cut” or the safety sign
specified in Annex AA.
8.3
Addition:
Chain saws shall be marked with the following:
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
– 10 –
–
specified nominal guide bar size or size range;
NOTE 101
–
IEC 62841-4-1:2017 © IEC 2017
The nominal guide bar size is not necessarily the same as the cutting length.
identification of the direction of rotation of the saw chain by a legible and durable mark on
the body of the machine. This may be located under the drive sprocket cover.
8.14.1
Addition:
The additional safety instructions as specified in 8.14.1.101 shall be given. This part may be
printed separately from the “General Machine Safety Warnings”.
8.14.1.101
Safety instructions for chain saws
1) General chain saw safety warnings:
a) Keep all parts of the body away from the saw chain when the chain saw is
operating. Before you start the chain saw, make sure the saw chain is not
contacting anything. A moment of inattention while operating chain saws may cause
entanglement of your clothing or body with the saw chain.
b) Always hold the chain saw with your right hand on the rear handle and your left
hand on the front handle. Holding the chain saw with a reversed hand configuration
increases the risk of personal injury and should never be done.
c) Hold the chain saw by insulated gripping surfaces only, because the saw chain
may contact hidden wiring or its own cord. Saw chains contacting a "live" wire may
make exposed metal parts of the chain saw "live" and could give the operator an
electric shock.
d) Wear eye protection. Further protective equipment for hearing, head, hands, legs
and feet is recommended. Adequate protective equipment will reduce personal injury
from flying debris or accidental contact with the saw chain.
e) Do not operate a chain saw in a tree, on a ladder, from a rooftop, or any unstable
support. Operation of a chain saw in this manner could result in serious personal
injury.
f) Always keep proper footing and operate the chain saw only when standing on
fixed, secure and level surface. Slippery or unstable surfaces may cause a loss of
balance or control of the chain saw.
g) When cutting a limb that is under tension, be alert for spring back. When the
tension in the wood fibres is released, the spring loaded limb may strike the operator
and/or throw the chain saw out of control.
h) Use extreme caution when cutting brush and saplings. The slender material may
catch the saw chain and be whipped toward you or pull you off balance.
i)
Carry the chain saw by the front handle with the chain saw switched off and away
from your body. When transporting or storing the chain saw, always fit the guide
bar cover. Proper handling of the chain saw will reduce the likelihood of accidental
contact with the moving saw chain.
j)
Follow instructions for lubricating, chain tensioning and changing the bar and
chain. Improperly tensioned or lubricated chain may either break or increase the
chance for kickback.
k) Cut wood only. Do not use chain saw for purposes not intended. For example: do
not use chain saw for cutting metal, plastic, masonry or non-wood building
materials. Use of the chain saw for operations different than intended could result in a
hazardous situation.
l)
Do not attempt to fell a tree until you have an understanding of the risks and how
to avoid them. Serious injury could occur to the operator or bystanders while felling a
tree.
NOTE The above warning is omitted for chain saws that are not suitable for tree felling as specified by
the manufacturer. See 8.14.2 b) 104).
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
– 11 –
m) This chain saw is not intended for tree felling. Use of the chain saw for operations
different than intended could result in serious injury to the operator or bystanders.
NOTE
The above warning is omitted for chain saws that are suitable for tree felling.
2) Causes and operator prevention of kickback:
Kickback may occur when the nose or tip of the guide bar touches an object, or when the
wood closes in and pinches the saw chain in the cut.
Tip contact in some cases may cause a sudden reverse reaction, kicking the guide bar up
and back towards the operator.
Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back
towards the operator.
Either of these reactions may cause you to lose control of the saw which could result in
serious personal injury. Do not rely exclusively upon the safety devices built into your saw.
As a chain saw user, you should take several steps to keep your cutting jobs free from
accident or injury.
Kickback is the result of chain saw misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below:
a) Maintain a firm grip, with thumbs and fingers encircling the chain saw handles,
with both hands on the saw and position your body and arm to allow you to
resist kickback forces. Kickback forces can be controlled by the operator, if proper
precautions are taken. Do not let go of the chain saw.
NOTE Figure 103 may be used as an illustration in the instruction manual for holding the machine
properly.
b) Do not overreach and do not cut above shoulder height. This helps prevent
unintended tip contact and enables better control of the chain saw in unexpected
situations.
c) Only use replacement guide bars and saw chains specified by the manufacturer.
Incorrect replacement guide bars and saw chains may cause chain breakage and/or
kickback.
d) Follow the manufacturer’s sharpening and maintenance instructions for the saw
chain. Decreasing the depth gauge height can lead to increased kickback.
8.14.2 a)
Addition:
101)
Explanation of chain saw safety devices;
102)
Instructions for properly installing and adjusting the guide bar and saw chain;
103)
Instruction for selection and use of protective equipment for eyes, ears, head,
hands, legs and feet, as applicable.
8.14.2 b)
Addition:
101)
Recommendation for the use of a residual current device with a tripping current
of 30 mA or less;
102)
Statement to position the cord so that it will not be caught on branches and the
like, during cutting;
103)
Recommendation that the first-time user should, as a minimum, practise cutting
logs on a saw-horse or cradle;
104)
Information that the chain saw is not suitable for tree felling, if applicable;
105)
Instructions to explain the proper techniques for basic felling, limbing, and crosscutting. Examples for the required instructions are given in Clause BB.1 to BB.5. If
the chain saw is not suitable for tree felling as specified by the manufacturer,
then instructions for felling techniques may be omitted;
106)
If applicable, instruction on the use of a manual lubrication control;
107)
If applicable, instruction not to operate the chain saw without lubrication and to
replenish it in due time before the container is empty;
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
– 12 –
IEC 62841-4-1:2017 © IEC 2017
108)
Instruction to use only recommended lubricants;
109)
Information on the maximum speed of the saw chain, or if the maximum speed
of the saw chain is less than 20 m/s, this may be stated.
8.14.2 c)
Addition:
101)
Information on recommended guide bar and saw chain combination(s) that can
be used and that maintains compliance with this standard;
102)
Instructions on sharpening and maintenance of the saw chain and/or a
recommendation to have sharpening and maintenance of the saw chain
performed by authorised service centres.
8.14.3
Replacement:
If information about the mass or weight of the machine is provided, it shall be the mass of the
machine without the saw chain, guide bar, guide bar cover, oil and optional accessories.
Compliance is checked by inspection.
9
Protection against access to live parts
This clause of Part 1 is applicable.
10 Starting
This clause of Part 1 is applicable.
11 Input and current
This clause of Part 1 is applicable.
12 Heating
This clause of Part 1 is applicable, except as follows:
12.2.1
Replacement:
The load conditions for the heating test of 12.2 are as follows:
The machine is operated with a torque load applied such that rated input or rated current is
drawn. The machine is operated for 30 min. During this period, the torque load is adjusted as
necessary to maintain rated input or rated current.
13 Resistance to heat and fire
This clause of Part 1 is applicable.
14 Moisture resistance
This clause of Part 1 is applicable, except as follows:
Addition:
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
– 13 –
NOTE 101 Saw chain lubrication tanks and lubrication systems intended for use with oil as specified in 8.14.2 are
not considered to be liquid systems.
14.2.1
Replacement:
The machine is not connected to the supply.
The machine is placed in its normal rest position on a perforated turntable. The turntable is
then turned continuously at approximately 1 rev/min during the test.
Electrical components, covers and other detachable parts are removed and subjected, if
necessary, to the relevant treatment with the main part. Movable covers that are nondetachable parts and are not self-restoring are placed in the most unfavourable position.
NOTE
Examples of self-restoring covers include those that are spring loaded or close by gravity.
14.3 This subclause of Part 1 is not applicable for saw chain lubrication tanks and
lubrication systems intended for use with oil as specified in 8.14.2.
15 Resistance to rusting
This clause of Part 1 is applicable.
16 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
17 Endurance
This clause of Part 1 is applicable, except as follows:
17.2
Modification:
This subclause is applicable as for hand-held tools. The saw chain is removed for the
endurance test.
18 Abnormal operation
This clause of Part 1 is applicable, except as follows:
18.3
Replacement:
Machines incorporating a series motor are operated without the saw chain at a voltage equal
to 1,3 times rated voltage for 1 min at no-load.
During the test, parts shall not be ejected from the machine. After this test, the machine need
not be capable of further use.
An additional device incorporated in the machine to limit the speed may operate during the
test.
18.5
Modification:
The requirements for tools other than lawn and garden machinery are applicable.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
– 14 –
18.8.1
IEC 62841-4-1:2017 © IEC 2017
Replacement of Table 4 by the following:
Table 4 – Required performance levels
Type and purpose of SCF
Minimum performance level (PL)
Power switch – prevent unwanted switch-on
Shall be evaluated using the fault
conditions of 18.6.1 without the
loss of this SCF
Power switch – provide desired switch-off
Shall be evaluated using the fault
conditions of 18.6.1 without the
loss of this SCF
Provide desired direction of rotation for cutting lengths ≤ 300 mm.
a
Provide desired direction of rotation for cutting lengths > 300 mm.
b
Starting current limitation as in 10.2
Not an SCF
Prevent exceeding thermal limits as in Clause 18
a
Manually activated chain brake function if required in 19.107.1 for
chain saws
b
Overspeed prevention for chain saws with no chain brake if such
overspeed would cause non-compliance with 19.107.1
a
Overspeed prevention if such overspeed would cause non-compliance
with 19.107.1.2
a
Prevent exceeding the maximum braking time in 19.107.1.2
a
Overspeed prevention for chain saws without a non-manually activated
chain brake to prevent chain speed above 15 m/s as in 19.107.2
a
Non-manually activated chain brake function as in 19.107.2
b
Overspeed prevention if such overspeed would cause non-compliance
with 19.107.4
a
Provide automatic lubrication of the saw chain as in 19.110
Not an SCF
Prevent exceeding the maximum run down time in 19.112
a
Operator presence sensor as in 21.18.102
a
Lock-off function as required by 21.18.102
b
Visual or audible indicator as referenced in 21.18.102
Prevent self-resetting as required in 23.3
Not an SCF
a
19 Mechanical hazards
This clause of Part 1 is applicable, except as follows:
19.1
Modification:
The requirements of this subclause do not apply to those moving parts and guards which are
separately covered by 19.102, 19.103 and 19.104.
19.6
This subclause of Part 1 is not applicable.
19.7
This subclause of Part 1 is not applicable.
19.8
This subclause of Part 1 is not applicable.
19.9
Replacement:
If, in accordance with 8.14.2, the user is instructed to remove a drive sprocket cover, such
as for maintenance, to change the saw chain or guide bar, then the fastenings shall remain
attached to the drive sprocket cover or to the machinery, unless the drive sprocket cover
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
– 15 –
fastenings are the only means for retaining the guide bar. If a fastening is not removed for
removing the drive sprocket cover, it is considered as still attached.
Compliance is checked by inspection and by manual test.
19.101
Handles
Chain saws shall be fitted with at least two handles to provide safe control. The length of the
grip area of the front handle shall be at least 100 mm. The handle surfaces shall be so
designed and shaped that firm grip may be applied. Minimum clearances and sizes of the
handles shall be in accordance with ISO 7914 for forest work chain saws, except for the
determination of dimension D. Dimension D shall be the straight line distance from the rear
side of the power switch to a point on the axis of the front handle, 50 mm to the left of X 0 ,
where X 0 is determined in accordance with ISO 6533. For chain saws with a maximum
speed of the saw chain not exceeding 8 m/s and a maximum cutting length not exceeding
300 mm, however, the dimension D in Table 1 of ISO 7914:2002 may be reduced to a
minimum of 125 mm.
Compliance is checked by inspection and by measurement.
19.102
Front hand guard
A guard shall be fitted in the vicinity of the front handle to protect the operator’s fingers from
injury by contact with the saw chain. The dimensions and clearances of this front hand
guard and the prevention of access from the front handle to the saw chain shall comply with
ISO 6533.
Compliance is checked by inspection and by measurement.
19.103
Rear hand guard
A rear hand guard shall be provided along the length of the right side of the bottom of the
rear handle to protect the operator’s hand from contact in case the saw chain breaks or
derails.
The rear hand guard shall extend from the right edge of the rear handle for at least 30 mm
on the guide bar side (see Figure 104) and
–
at least 100 mm lengthwise from the inner rear part of the chain saw body (see
Figure 104); or
–
at least three times the diameter of 25 mm behind the power switch, as defined by three
cylinders pressed against the rear handle and the power switch;
whichever of these options is further back.
This requirement may also be fulfilled by parts of the machine.
Compliance is checked by inspection and by measurement.
19.104
Drive sprocket cover
The drive sprocket and saw chain shall be covered within the area of the body of the chain
saw. This cover shall not be removable without the aid of a tool unless the drive sprocket
cover fastenings are the only means for retaining the guide bar.
There may be openings at the front, the front upper section and the bottom section to allow
the ejection of wood chips and to allow passage of the guide bar and saw chain.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
– 16 –
IEC 62841-4-1:2017 © IEC 2017
Compliance is checked by inspection and by the following test:
With the drive sprocket cover, guide bar and saw chain fitted, it shall not be possible to
touch the drive sprocket and saw chain with the straight test probe (see Figure 105)
introduced with a force not exceeding 5 N from the top, the rear and the sides of the drive
sprocket cover within the area of the body of the chain saw.
19.105
Chain catcher
The chain saw shall be fitted with a chain catcher device placed under the saw chain as far
to the front as practicable. The chain catcher shall extend sideways at least 5 mm from the
centre-plane of the guide bar.
Compliance is checked by inspection and by measurement.
19.106
Void
19.107
Protection against injury by kickback
Chain saws shall be designed to minimize the risk of injury due to the effect of kickback.
19.107.1 Chain saws shall be equipped with a manually activated chain brake, operated
by the front hand guard in a direction away from the operator, that stops movement of the
saw chain.
A manually activated chain brake is not required if the chain saw is fitted with a nonmanually activated chain brake that meets the requirements of 19.107.2 or provided the
following requirements are fulfilled:
–
the maximum speed of the saw chain does not exceed 5 m/s; and
–
the cutting length without bar tip guard does not exceed 300 mm.
Compliance is checked by inspection and by measurement with the chain saw fitted with a
saw chain and guide bar as specified in 8.14.2.
NOTE
In New Zealand, the following conditions apply:
All chain saws shall be fitted with a manually activated chain brake.
19.107.1.1 The manually activated chain brake shall be designed so that the static
activation force required is not more than 60 N and not less than 20 N.
Compliance is checked by the following test.
With the power switch in the "on" position and the chain saw disconnected from the power
source, the force on the front hand guard needed to activate the brake shall be measured at
the centre of the top (horizontal) part of the front hand guard and in the direction of 45°
forward and downward in relation to the guide bar centreline, see Figure 106.
The force shall be applied at a uniform rate.
19.107.1.2 The average braking time shall not exceed 0,12 s and the maximum braking time
shall not exceed 0,15 s.
Compliance is checked by the following test.
The chain saw and saw chain tension shall be adjusted as for normal use, as specified in
8.14.2. The chain saw shall be run in before starting the test by performing 10 on”/”off” cycles
with the power switch. One cycle consists of 30 s running and 30 s rest. After the run-in, the
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Provläsningsexemplar / Preview
IEC 62841-4-1:2017 © IEC 2017
– 17 –
saw chain tension shall be adjusted according to the manufacturer’s recommendations. If no
recommendations are provided, the saw chain tension shall generally be adjusted so that,
when a 1 kg mass is hanging from the centre of the cutting length along the lower portion of
the saw chain, the gap between the saw chain side link and the guide bar is a minimum of
0,017 mm per millimetre of guide bar length.
With the saw chain lubricated as in normal use, and operated at rated voltage and
maximum speed, the front hand guard is set in motion by the impact of a pendulum. This
pendulum shall have a mass of 0,70 kg, a hammer with a flat strike face of 50 mm diameter
and an arm of 700 mm length. The pendulum drop height shall be 200 mm. Any special
hardware and/or software used to achieve maximum speed in accordance with 5.101 shall
not influence the braking performance provided by the chain brake. The time for the saw
chain to stop shall be measured from the moment of impact with the front hand guard (see
Figure 107).
The chain brake shall be operated a total of 25 times. The maximum stopping time and the
average stopping time of the saw chain shall be determined at the first five and the last five
braking operations.
The saw chain is considered to be stopped when the time taken for two successive drive links
(see dimension a in Figure 108) to pass a fixed point exceeds 5 ms.
The tests shall be done in 2 min intervals, comprising a no-load running period of 1 min prior
to each impact of the pendulum. Immediately after the operation of the chain brake and the
saw chain has stopped, the chain saw shall be switched off for the remainder of the interval.
The chain brake actuation mechanism shall be reset during this off period.
19.107.2 Chain saws with a maximum speed of the saw chain above 15 m/s shall be
equipped with a non-manually activated chain brake that is sufficiently sensitive to operate
when kickback occurs.
Compliance is checked by inspection and by the test of ISO 13772, with the power switch in
the "on" position and the chain saw disconnected from the power source. For cutting
lengths less than 500 mm, the threshold level of chain saws for forest service with ≤ 40 cm 3
engine displacement shall apply. For cutting lengths of 500 mm or greater, the threshold
level of chain saws for forest service with > 40 cm 3 engine displacement shall apply .
19.107.2.1 If the actuation of the non–manually activated chain brake is independent of
the front hand guard, the stopping time requirements shall apply as specified in 19.107.1.2.
Compliance is checked by the test described by 19.107.1.2. The pendulum, however, is
replaced by any arrangement suitable to measure the time from the moment the simulated
kickback is detected by the non-manually activated chain brake until the saw chain has
stopped.
NOTE
Examples of suitable test arrangements include the use of timing devices, sensors, high speed video, etc.
19.107.2.2 If the non-manually activated chain brake functions through the activation of
the front hand guard, then the stopping time requirements in 19.107.1.2 shall apply.
Compliance is checked by test described by 19.107.1.2. If this test was already performed for
a manually activated chain brake, this test need not be repeated.
19.107.3 After activation of a chain brake, if any, the motion of the saw chain shall stop
and operation of the chain saw shall not resume without deliberate operator action of either:
–
deactivation and reactivation of the power switch; or
–
resetting of the front hand guard, if the operational state of the chain brake is
recognizable by position or other means.
Copyright © IEC, 2017, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK.
No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC.
Download PDF
Similar pages