IEC 62841-2-21:2017

Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-21: Particular requirements for hand-held drain cleaners

IEC 62841-2-21:2017 applies to hand-held drain cleaners (drain cleaners are also known as pipe cleaners) the rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for three-phase a.c. tools. The rated input is not more than 3 700 W. The limits for the applicability of this standard for battery tools are given in K.1 and L.1. This standard deals with the hazards presented by tools which are encountered by all persons in the normal use and reasonably foreseeable misuse of the tools. Hand-held electric tools, which can be mounted on a support or working stand for use as fixed tools without any alteration of the tool itself, are within the scope of this standard and such combination of a hand-held tool and a support is considered to be a transportable tool and thus covered by the relevant Part 3.
This standard does not apply to transportable drain cleaners.
This standard does not apply to machines that use a solid rod to clean drains.
This Part 2-21 is to be used in conjunction with the first edition of IEC 62841-1:2014.
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.

Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 2-21: Exigences particulières pour les furets portatifs

IEC 62841-2-21:2017 traite de la sécurité des furets portatifs (les furets sont également appelés déboucheurs de canalisations) la tension assignée est inférieure à 250 V pour les outils à courant monophasé alternatif ou continu, et inférieure à 480 V pour les outils à courant alternatif triphasé. La tension assignée est inférieure à 3 700 W. Les limites d'application de la présente Norme aux outils fonctionnant sur batterie sont indiquées en K.1 et L.1. La présente Norme traite des dangers présentés par les outils, encourus par tous les individus dans l'utilisation normale et dans l'utilisation impropre raisonnablement prévisible de ces outils. Les outils électroportatifs, qui peuvent être montés sur un support de travail pour être utilisés comme outils installés à poste fixe sans aucune modification de l'outil lui-même, sont compris dans le domaine d'application de la présente Norme et la combinaison d'un outil portatif et d'un support est considérée comme un outil portable, donc couvert par la Partie 3 applicable.
La présente norme ne s'applique pas aux furets transportables.
La présente norme ne s'applique pas aux machines qui utilisent une tige solide pour nettoyer les canalisations d'évacuation.
La présente Partie 2-21 doit être utilisée conjointement avec la première édition de l'IEC 62841-1 (2014).
L'attention des Comités Nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication IEC, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés.
Le comité recommande que le contenu de cette publication soit entériné au niveau national au plus tôt 36 mois après la date de publication.
Mots clés: furet portatif, outil portable, sécurité

General Information

• Status: Published
• Publication Date: 19-Dec-2024
• ICS: 25.140.20 - Electric tools
• Technical Committee: TC 116 - Safety of motor-operated electric tools
• Drafting Committee: WG 8 - TC 116/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 23-May-2017
• Completion Date: 12-May-2017

Relations

• Amended By: IEC 62841-2-21:2017/AMD1:2024 - Amendment 1 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-21: Particular requirements for hand-held drain cleaners
• Effective Date: 08-Dec-2023

Overview

IEC 62841-2-21:2017 (consolidated with Amendment 1, Edition 1.1, 2024‑12) is the IEC safety standard for hand‑held drain cleaners (also called pipe cleaners). It supplements the general requirements of IEC 62841‑1:2014 and defines particular safety, testing and marking requirements for electrically motor‑driven hand‑held drain cleaning tools. Key scope limits include a rated supply voltage up to 250 V for single‑phase a.c./d.c., 480 V for three‑phase a.c., and a rated input of up to 3 700 W. This Part does not apply to transportable drain cleaners or machines that use a solid rod to clean drains; battery tool applicability is addressed in Annexes K and L.

Key topics and requirements

The standard focuses on hazards encountered in normal use and reasonably foreseeable misuse. Major technical topics include:

• General safety requirements and conditions for testing (accessories such as drain cleaner cables are treated separately).
• Marking and instructions, including specific safety instructions for drain cleaners (for example testing RCD/GFCI, use of RCD‑protected extension cords, glove and PPE guidance, and hygiene precautions).
• Electrical safety: protection against live parts, starting controls, input/current limits, earth/earthing provisions, terminals and cord requirements.
• Thermal and environmental resistance: heating, resistance to heat/fire, moisture resistance and resistance to rusting.
• Mechanical safety: mechanical hazards, mechanical strength, construction, internal wiring and components, cable drums and cutter attachments.
• Endurance, overload and abnormal operation tests to verify durability and safe behavior under fault or misuse conditions.
• Emissions: noise and vibration measurement guidance (informative Annex I).
• Battery tool considerations: normative guidance for battery‑powered tools and battery packs (Annex K and L).

Practical applications and users

Who uses IEC 62841‑2‑21?

• Manufacturers of hand‑held drain cleaners and accessories (cables, cutters, drums) to design compliant products.
• Testing laboratories and certification bodies for conformity assessment and product safety testing.
• Product safety engineers and compliance managers preparing technical files and instructions for use.
• Procurement teams, regulators and standards bodies who specify safety requirements for purchase or market access.
• Service technicians and trainers who must understand required PPE, RCD use and safe operating procedures.

Related standards

• IEC 62841‑1:2014 - General requirements for electric motor‑operated hand‑held tools.
• Other parts of the IEC 62841 series, including a future Part 3 addressing transportable tools (transportable drain cleaners).

Keywords: IEC 62841-2-21, hand-held drain cleaners, drain cleaner safety, electric motor-operated tools, RCD, IEC 62841-1, battery tools, pipe cleaner standard.

Standards Content (Sample)

IEC 62841-2-21 ®
Edition 1.1 2024-12
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-21: Particular requirements for hand-held drain cleaners

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IEC 62841-2-21 ®
Edition 1.1 2024-12
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-21: Particular requirements for hand-held drain cleaners
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.140.20 ISBN 978-2-8327-0124-9
REDLINE VERSION – 2 – IEC 62841-2-21:2017+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for the tests . 6
6 Radiation, toxicity and similar hazards . 6
7 Classification . 6
8 Marking and instructions . 6
9 Protection against access to live parts . 7
10 Starting . 7
11 Input and current . 7
12 Heating . 7
13 Resistance to heat and fire . 7
14 Moisture resistance . 8
15 Resistance to rusting . 8
16 Overload protection of transformers and associated circuits . 8
17 Endurance . 8
18 Abnormal operation . 8
19 Mechanical hazards . 9
20 Mechanical strength . 9
21 Construction . 9
22 Internal wiring . 10
23 Components . 10
24 Supply connection and external flexible cords . 10
25 Terminals for external conductors . 10
26 Provision for earthing . 10
27 Screws and connections . 10
28 Creepage distances, clearances and distances through insulation . 11
Annexes . 13
Annex I (informative) Measurement of noise and vibration emissions . 13
Annex K (normative) Battery tools and battery packs . 15
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 16
Bibliography . 17

Figure 101 – Example of a drain cleaner . 11
Figure 102 – Locking mechanism for drain cleaner cable . 12
Figure I.101 – Positions of transducers for drain cleaners . 14

Table 4 – Required performance levels . 8

© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 2-21: Particular requirements for hand-held drain cleaners

FOREWORD
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This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 62841-2-21 edition 1.1 contains the first edition (2017-05) [documents 116/316/FDIS
and 116/326/RVD] and its amendment 1 (2024-12) [documents 116/726/CDV and
116/778A/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
REDLINE VERSION – 4 – IEC 62841-2-21:2017+AMD1:2024 CSV
© IEC 2024
International Standard IEC 62841-2-21 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-21 is to be used in conjunction with the first edition of IEC 62841-1 (2014).
This Part 2-21 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC standard: Particular requirements for hand-held drain cleaners.
Where a particular subclause of Part 1 is not mentioned in this Part 2-21, 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.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes and figures which are additional to those in Part 1 are numbered starting
from 101.
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 and its amendment 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, or
• revised.
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.
© IEC 2024
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 2-21: Particular requirements for hand-held drain cleaners

1 Scope
This clause of Part 1 is applicable, except as follows:
Addition:
This part of IEC 62841 applies to hand-held drain cleaners.
NOTE 101 Drain cleaners are also known as pipe cleaners.
This standard does not apply to transportable drain cleaners.
NOTE 102 Transportable drain cleaners will be covered by a future part of IEC 62841-3.
This standard does not apply to machines that use a solid rod to clean drains.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
Additional definitions:
3.101
cutter
accessory that is attached to the end of the drain cleaner cable or is a specially formed
section of the drain cleaner cable
Note 1 to entry: See Figure 101.
3.102
drain cleaner
tool designed to clean out drains and pipes with a rotating drain cleaner cable that is either
fed manually or with an automatic feed mechanism
Note 1 to entry: See Figure 101.
3.103
drain cleaner cable
flexible accessory of a drain cleaner that is inserted into the pipe or drain
Note 1 to entry: See Figure 101.
3.104
drum
cylindrical container that rotates and houses the drain cleaner cable

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Note 1 to entry: See Figure 101.
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:
5.17 Addition:
A drain cleaner cable is considered to be an accessory and is not included in the mass of
the tool.
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:
8.14.1 Addition:
For drain cleaners, the additional safety instructions as specified in 8.14.1.101 shall be
given. This part may be printed separately from the “General Power Tool Safety Warnings”.
8.14.1.1 Addition:
Item 2) b) is not applicable.
8.14.1.101 Safety instructions for drain cleaners
NOTE In the instructions below, at the discretion of the manufacturer the term “drain” is replaced with the term
“pipe”.
a) Before using the tool, test the residual current device (RCD) provided with the
supply cord to ensure it is operating correctly. A properly operating RCD reduces the
risk of electrical shock.
NOTE It is possible to replace the term “residual current device (RCD)” with the term “ground fault circuit
interrupter (GFCI)” or “earth leakage circuit breaker (ELCB)”.
b) Only use extension cords that are protected by an RCD. The RCD on the machine
power cord will not prevent electrical shock from the extension cords.
NOTE It is possible to replace the term “residual current device (RCD)” with the term “ground fault circuit
interrupter (GFCI)” or “earth leakage circuit breaker (ELCB)”.
c) Only grasp the rotating cable with gloves recommended by the manufacturer. Latex
or loose-fitting gloves or rags can become wrapped around the cable and may result in
serious personal injury.
© IEC 2024
d) Do not allow the cutter to stop turning while the cable is turning. This can overstress
the cable and may cause twisting, kinking or breaking of the cable and may result in
serious personal injury.
e) Use latex or rubber gloves inside the gloves recommended by the manufacturer,
goggles, face shields, protective clothing, and respirator when chemicals, bacteria
or other toxic or infectious substances are suspected to be in a drain line. Drains
may contain chemicals, bacteria and other substances that may cause burns, be toxic or
infectious or may result in other serious personal injury.
f) Practice good hygiene. Do not eat or smoke while handling or operating the tool.
After handling or operating drain cleaning equipment, use hot, soapy water to wash
hands and other body parts exposed to drain contents. This will help reduce the risk of
health hazards due to exposure to toxic or infectious material.
g) Only use the drain cleaner for the recommended drain sizes. Using the wrong size
drain cleaner can lead to twisting, kinking or breaking of the cable and may result in
personal injury.
8.14.2 a) Additional items:
101) Information on the permitted length(s) and diameter(s) of the drain cleaner cable;
102) Instruction on how to install the drain cleaner cable;
103) Information on recommended drain cleaner cable diameters for different pipe
diameters.
8.14.2 b) Additional items:
101) Information on the correct gloves to wear during operation;
102) Information on the distance the drain cleaner is to be placed from the drain or pipe
opening.
8.14.2 c) Additional item:
101) Instruction on how to inspect and maintain the drain cleaner cable.
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.
13 Resistance to heat and fire
This clause of Part 1 is applicable.

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14 Moisture resistance
This clause of Part 1 is applicable, except as follows:
14.5 Replacement:
A residual current device used to provide protection from shock in the case of moisture shall
comply with IEC 61540:1999 and shall meet the following requirements a) to c):
a) The RCD shall disconnect both mains conductors, but not the earth conductor if provided,
when the leakage exceeds 10 mA and with a maximum response of 300 ms.
Compliance is checked by inspection and the test of 9.9.2 of IEC 61540:1997. In addition,
during the test, the earthing conductor shall not become disconnected.
b) The RCD shall be reliable for its intended use.
Compliance is checked at rated voltage by operating the residual current device under
conditions of simulated leakage as in a) above during conditions of locked rotor of the tool
for 50 cycles. The residual current device shall operate correctly for all cycles.
c) The RCD shall be installed such that it is unlikely to be removed during use or normal
maintenance.
This requirement is considered fulfilled if the residual current device is fixed to the tool
or the power supply cord connected to the tool.
Compliance is checked by inspection.
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.
18 Abnormal operation
This clause of Part 1 is applicable, except as follows:
18.8.1 Replacement of Table 4:
Table 4 – Required performance levels
Type and purpose of SCF Minimum performance level (PL)
Power switch – prevent unwanted switch-on a
Power switch – provide desired switch-off a
Provide desired direction of rotation a
Any electronic control to pass the test of 18.3 a
Any speed limiting device Not an SCF
Prevent exceeding thermal limits as in Clause 18 18.4 a
and 18.5.3
© IEC 2024
19 Mechanical hazards
This clause of Part 1 is applicable, except as follows:
19.1 Replacement of the first paragraph:
Moving dangerous parts and other dangerous parts other than the drain cleaner cable and
the drum, which is covered by 19.101, shall be so positioned or enclosed to provide adequate
protection against personal injury.
The drain cleaner cable shall be smooth and free from sharp edges except for the cutter.
19.4 Replacement:
Drain cleaners shall have at least two handles or grasping surfaces to ensure safe handling
during use.
Compliance is checked by inspection.
19.6 This subclause is not applicable.
19.101 The drum shall have a continuous outer surface without any openings. Any
protrusions from or indentations in the drum shall be smooth, free of burrs and shall not have
an acute angle in the forward direction of rotation and protrusions shall not exceed 12 mm.
Compliance is checked by inspection and by measurement.
20 Mechanical strength
This clause of Part 1 is applicable, except as follows:
20.1 Addition:
Damage to the drum, drum mounting or drain cleaner cable feed mechanism is permitted,
provided that protection against access to live parts in accordance with Clause 9 is not
impaired.
20.5 This subclause is not applicable.
21 Construction
This clause of Part 1 is applicable, except as follows:
21.15 Replacement:
Drain cleaners shall protect the user against the increased risk of shock due to the presence
of moisture.
Drain cleaners shall be either:
• of class III construction; or

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• of class I construction or class II construction, be provided with a residual current
device and comply with 14.5; or
• of class I construction or class II construction and be designed for use in combination
with an isolating transformer.
Compliance is checked by inspection.
21.18.1.1 Addition:
The power switch shall not have any locking device to lock it in the “on” position.
21.18.1.2 This subclause is not applicable.
21.30 This subclause is not applicable.
21.35 This subclause is not applicable.
21.101 A drain cleaner cable locking mechanism that rotates with the drain cleaner cable
shall be smooth and free from burrs. To prevent entanglement, protrusions shall
• not exceed 12 mm radially; and
• not have an acute angle in the forward direction of rotation.
Compliance is checked by inspection and by measurement with the locking mechanism fully
tightened with the largest drain cleaner cable installed in accordance with 8.14.2 b) 102).
See Figure 102.
22 Internal wiring
This clause of Part 1 is applicable.
23 Components
This clause of Part 1 is applicable, except as follows:
23.3 This subclause is not applicable.
24 Supply connection and external flexible cords
This clause of Part 1 is applicable.
25 Terminals for external conductors
This clause of Part 1 is applicable.
26 Provision for earthing
This clause of Part 1 is applicable.
27 Screws and connections
This clause of Part 1 is applicable.

© IEC 2024
28 Creepage distances, clearances and distances through insulation
This clause of Part 1 is applicable.
6 3 2
IEC
Key
1 drum
2 drain cleaner cable forward/reverse feed mechanism
3 drain cleaner cable
4 handle/grasping surface
5 motor
6 cutter
Figure 101 – Example of a drain cleaner

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© IEC 2024
Dimensions in millimetres
≥ 90°
IEC
Key
1 locking collar
2 drain cleaner cable locking mechanism
3 direction of rotation
Figure 102 – Locking mechanism for drain cleaner cable

≤ 12
© IEC 2024
Annexes
The annexes of Part 1 are applicable except as follows:
Annex I
(informative)
Measurement of noise and vibration emissions
NOTE In Europe (EN 62841-2-21), Annex I is normative.
I.2 Noise test code (grade 2)
This clause of Part 1 is applicable except as follows:
I.2.4 Installation and mounting conditions of the power tools during noise tests
Addition:
Drain cleaners are suspended in such a way as to correspond to normal use. They are
tested without a drain cleaner cable installed.
I.2.5 Operating conditions
Addition:
Drain cleaners are tested at no-load. Speed settings are set to the highest speed.
The temperature requirements of 5.6 are not applicable.
I.3 Vibration
This clause of Part 1 is applicable except as follows:
I.3.3.2 Location of measurement
Addition:
Figure I.101 shows the positions for drain cleaners.
I.3.5.1 General
Addition:
For battery operated tools, the tests are conducted with the lightest battery in accordance
with K.8.14.2 e) 2) of Part 1 that has sufficient capacity to operate the tool at no-load for at
least 25 min.
I.3.5.3 Operating conditions
Addition:
Drain cleaners are tested at no-load with no drain cleaner cable installed. Speed settings
are set to the highest speed.
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The drain cleaner is held horizontally during the test.
I.3.6.2 Declaration of the vibration total value
Addition:
The vibration total value a of the handle with the highest emission and the uncertainty K shall
h
be declared.
Detail of transducers
(measurement in axes X, Y, Z)
IEC
Figure I.101 – Positions of transducers for drain cleaners

© IEC 2024
Annex K
(normative)
Battery tools and battery packs
K.1 Scope
Addition:
All clauses of this Part 2-21 apply unless otherwise specified in this annex.
K.8.14.1.101 Safety instructions for drain cleaners
Items a) and b) are not applicable.
K.14.5 This subclause is not applicable.
K.21.15 This subclause is not applicable.
NOTE In Europe (EN 62841-2-21), the following additional subclause applies:
K.21.18.Z101 Isolation and disabling device
Tools with an integral battery shall either be equipped
– with an isolation device to prevent the risk of injury from mechanical hazards during servicing or user
maintenance; or
– with a disabling device that prevents unintentional starting of the tool.
An isolation device shall
– provide disconnection of all poles of the battery from the serviceable region of the tool;
– be equipped with an unambiguous indication of the state of the disconnection device which corresponds to
each position of its manual control (actuator);
– be provided with protection against accidental reconnection.
NOTE 1 Examples of methods to achieve this disconnection include removable jumpers, integral batteries
that can be disconnected for servicing or user maintenance, or an electromechanical power switch with a
direct mechanical link between the actuator and the contact.
NOTE 2 The risk of accidental reconnection for a power switch is addressed by the requirement of
21.18.1.2. The other examples in NOTE 1 achieve this by the necessary actions for reconnection.
A disabling device may be achieved by any of the following:
– a self-restoring or non-self-restoring lock-off device where two separate and dissimilar actions are
necessary before the motor is switched on (e.g. a power switch which has to be pushed in before it can
be moved laterally to close the contacts to start the motor). It shall not be possible to achieve these two
actions with a single grasping motion or a straight line motion;
– a removable disabling device provided with the tool where it shall not be possible for the tool to be
operated when either applied or removed.
Compliance is checked by inspection and by manual test.

REDLINE VERSION – 16 – IEC 62841-2-21:2017+AMD1:2024 CSV
© IEC 2024
Annex L
(normative)
Battery tools and battery packs provided
with mains connection or non-isolated sources
L.1 Scope
Addition:
All clauses of this Part 2-21 apply unless otherwise specified in this annex.
NOTE In Europe (EN 62841-2-21), the following additional subclause applies:
L.21.18.Z101 Isolation and disabling device
Tools with an integral battery shall either be equipped
– with an isolation device to prevent the risk of injury from mechanical hazards during servicing or user
maintenance; or
– with a disabling device that prevents unintentional starting of the tool.
An isolation device shall
– provide disconnection of all poles of the battery from the serviceable region of the tool;
– be equipped with an unambiguous indication of the state of the disconnection device which corr
...

IEC 62841-2-21 ®
Edition 1.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-21: Particular requirements for hand-held drain cleaners

Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 2-21: Exigences particulières pour les furets portatifs

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IEC 62841-2-21 ®
Edition 1.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 2-21: Particular requirements for hand-held drain cleaners

Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 2-21: Exigences particulières pour les furets portatifs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-4278-0

– 2 – IEC 62841-2-21:2017 © IEC 2017
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for the tests . 6
6 Radiation, toxicity and similar hazards . 6
7 Classification . 6
8 Marking and instructions . 6
9 Protection against access to live parts . 7
10 Starting . 7
11 Input and current . 7
12 Heating . 7
13 Resistance to heat and fire . 7
14 Moisture resistance . 8
15 Resistance to rusting . 8
16 Overload protection of transformers and associated circuits . 8
17 Endurance . 8
18 Abnormal operation . 8
19 Mechanical hazards . 9
20 Mechanical strength . 9
21 Construction . 9
22 Internal wiring . 10
23 Components . 10
24 Supply connection and external flexible cords . 10
25 Terminals for external conductors . 10
26 Provision for earthing . 10
27 Screws and connections . 10
28 Creepage distances, clearances and distances through insulation . 10
Annexes . 13
Annex I (informative) Measurement of noise and vibration emissions . 13
Annex K (normative) Battery tools and battery packs . 15
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 16
Bibliography . 17

Figure 101 – Example of a drain cleaner . 11
Figure 102 – Locking mechanism for drain cleaner cable . 12
Figure I.101 – Positions of transducers for drain cleaners . 14

Table 4 – Required performance levels . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 2-21: Particular requirements for hand-held drain cleaners

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,
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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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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services carried out by independent certification bodies.
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7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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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 62841-2-21 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
The text of this standard is based on the following documents:
FDIS Report on voting
116/316/FDIS 116/326/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.
This Part 2-21 is to be used in conjunction with the first edition of IEC 62841-1 (2014).

– 4 – IEC 62841-2-21:2017 © IEC 2017
This Part 2-21 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC standard: Particular requirements for hand-held drain cleaners.
Where a particular subclause of Part 1 is not mentioned in this Part 2-21, 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.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes and figures which are additional to those in Part 1 are numbered starting
from 101.
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.

ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 2-21: Particular requirements for hand-held drain cleaners

1 Scope
This clause of Part 1 is applicable, except as follows:
Addition:
This part of IEC 62841 applies to hand-held drain cleaners.
NOTE 101 Drain cleaners are also known as pipe cleaners.
This standard does not apply to transportable drain cleaners.
NOTE 102 Transportable drain cleaners will be covered by a future part of IEC 62841-3.
This standard does not apply to machines that use a solid rod to clean drains.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
Additional definitions:
3.101
cutter
accessory that is attached to the end of the drain cleaner cable or is a specially formed
section of the drain cleaner cable
Note 1 to entry: See Figure 101.
3.102
drain cleaner
tool designed to clean out drains and pipes with a rotating drain cleaner cable that is either
fed manually or with an automatic feed mechanism
Note 1 to entry: See Figure 101.
3.103
drain cleaner cable
flexible accessory of a drain cleaner that is inserted into the pipe or drain
Note 1 to entry: See Figure 101.
3.104
drum
cylindrical container that rotates and houses the drain cleaner cable

– 6 – IEC 62841-2-21:2017 © IEC 2017
Note 1 to entry: See Figure 101.
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:
5.17 Addition:
A drain cleaner cable is considered to be an accessory and is not included in the mass of
the tool.
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:
8.14.1 Addition:
For drain cleaners, the additional safety instructions as specified in 8.14.1.101 shall be
given. This part may be printed separately from the “General Power Tool Safety Warnings”.
8.14.1.1 Addition:
Item 2) b) is not applicable.
8.14.1.101 Safety instructions for drain cleaners
NOTE In the instructions below, at the discretion of the manufacturer the term “drain” is replaced with the term
“pipe”.
a) Before using the tool, test the residual current device (RCD) provided with the
supply cord to ensure it is operating correctly. A properly operating RCD reduces the
risk of electrical shock.
NOTE It is possible to replace the term “residual current device (RCD)” with the term “ground fault circuit
interrupter (GFCI)” or “earth leakage circuit breaker (ELCB)”.
b) Only use extension cords that are protected by an RCD. The RCD on the machine
power cord will not prevent electrical shock from the extension cords.
NOTE It is possible to replace the term “residual current device (RCD)” with the term “ground fault circuit
interrupter (GFCI)” or “earth leakage circuit breaker (ELCB)”.
c) Only grasp the rotating cable with gloves recommended by the manufacturer. Latex
or loose-fitting gloves or rags can become wrapped around the cable and may result in
serious personal injury.
d) Do not allow the cutter to stop turning while the cable is turning. This can overstress
the cable and may cause twisting, kinking or breaking of the cable and may result in
serious personal injury.
e) Use latex or rubber gloves inside the gloves recommended by the manufacturer,
goggles, face shields, protective clothing, and respirator when chemicals, bacteria
or other toxic or infectious substances are suspected to be in a drain line. Drains
may contain chemicals, bacteria and other substances that may cause burns, be toxic or
infectious or may result in other serious personal injury.
f) Practice good hygiene. Do not eat or smoke while handling or operating the tool.
After handling or operating drain cleaning equipment, use hot, soapy water to wash
hands and other body parts exposed to drain contents. This will help reduce the risk of
health hazards due to exposure to toxic or infectious material.
g) Only use the drain cleaner for the recommended drain sizes. Using the wrong size
drain cleaner can lead to twisting, kinking or breaking of the cable and may result in
personal injury.
8.14.2 a) Additional items:
101) Information on the permitted length(s) and diameter(s) of the drain cleaner cable;
102) Instruction on how to install the drain cleaner cable;
103) Information on recommended drain cleaner cable diameters for different pipe
diameters.
8.14.2 b) Additional items:
101) Information on the correct gloves to wear during operation;
102) Information on the distance the drain cleaner is to be placed from the drain or pipe
opening.
8.14.2 c) Additional item:
101) Instruction on how to inspect and maintain the drain cleaner cable.
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.
13 Resistance to heat and fire
This clause of Part 1 is applicable.

– 8 – IEC 62841-2-21:2017 © IEC 2017
14 Moisture resistance
This clause of Part 1 is applicable, except as follows:
14.5 Replacement:
A residual current device used to provide protection from shock in the case of moisture shall
comply with IEC 61540:1999 and shall meet the following requirements a) to c):
a) The RCD shall disconnect both mains conductors, but not the earth conductor if provided,
when the leakage exceeds 10 mA and with a maximum response of 300 ms.
Compliance is checked by inspection and the test of 9.9.2 of IEC 61540:1997. In addition,
during the test, the earthing conductor shall not become disconnected.
b) The RCD shall be reliable for its intended use.
Compliance is checked at rated voltage by operating the residual current device under
conditions of simulated leakage as in a) above during conditions of locked rotor of the tool
for 50 cycles. The residual current device shall operate correctly for all cycles.
c) The RCD shall be installed such that it is unlikely to be removed during use or normal
maintenance.
This requirement is considered fulfilled if the residual current device is fixed to the tool
or the power supply cord connected to the tool.
Compliance is checked by inspection.
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.
18 Abnormal operation
This clause of Part 1 is applicable, except as follows:
18.8.1 Replacement of Table 4:
Table 4 – Required performance levels
Type and purpose of SCF Minimum performance level (PL)
Power switch – prevent unwanted switch-on a
Power switch – provide desired switch-off
a
Provide desired direction of rotation a
Any electronic control to pass the test of 18.3 a
Any speed limiting device Not an SCF
Prevent exceeding thermal limits as in Clause 18 a

19 Mechanical hazards
This clause of Part 1 is applicable, except as follows:
19.1 Replacement of the first paragraph:
Moving dangerous parts and other dangerous parts other than the drain cleaner cable and
the drum, which is covered by 19.101, shall be so positioned or enclosed to provide adequate
protection against personal injury.
The drain cleaner cable shall be smooth and free from sharp edges except for the cutter.
19.4 Replacement:
Drain cleaners shall have at least two handles or grasping surfaces to ensure safe handling
during use.
Compliance is checked by inspection.
19.6 This subclause is not applicable.
19.101 The drum shall have a continuous outer surface without any openings. Any
protrusions from or indentations in the drum shall be smooth, free of burrs and shall not have
an acute angle in the forward direction of rotation and protrusions shall not exceed 12 mm.
Compliance is checked by inspection and by measurement.
20 Mechanical strength
This clause of Part 1 is applicable, except as follows:
20.1 Addition:
Damage to the drum, drum mounting or drain cleaner cable feed mechanism is permitted,
provided that protection against access to live parts in accordance with Clause 9 is not
impaired.
20.5 This subclause is not applicable.
21 Construction
This clause of Part 1 is applicable, except as follows:
21.15 Replacement:
Drain cleaners shall protect the user against the increased risk of shock due to the presence
of moisture.
Drain cleaners shall be either:
• of class III construction; or
• of class I construction or class II construction, be provided with a residual current
device and comply with 14.5; or

– 10 – IEC 62841-2-21:2017 © IEC 2017
• of class I construction or class II construction and be designed for use in combination
with an isolating transformer.
Compliance is checked by inspection.
21.18.1.1 Addition:
The power switch shall not have any locking device to lock it in the “on” position.
21.30 This subclause is not applicable.
21.35 This subclause is not applicable.
21.101 A drain cleaner cable locking mechanism that rotates with the drain cleaner cable
shall be smooth and free from burrs. To prevent entanglement, protrusions shall
• not exceed 12 mm radially; and
• not have an acute angle in the forward direction of rotation.
Compliance is checked by inspection and by measurement with the locking mechanism fully
tightened with the largest drain cleaner cable installed in accordance with 8.14.2 b) 102).
See Figure 102.
22 Internal wiring
This clause of Part 1 is applicable.
23 Components
This clause of Part 1 is applicable.
24 Supply connection and external flexible cords
This clause of Part 1 is applicable.
25 Terminals for external conductors
This clause of Part 1 is applicable.
26 Provision for earthing
This clause of Part 1 is applicable.
27 Screws and connections
This clause of Part 1 is applicable.
28 Creepage distances, clearances and distances through insulation
This clause of Part 1 is applicable.

6 3 2
IEC
Key
1 drum
2 drain cleaner cable forward/reverse feed mechanism
3 drain cleaner cable
4 handle/grasping surface
5 motor
6 cutter
Figure 101 – Example of a drain cleaner

– 12 – IEC 62841-2-21:2017 © IEC 2017
Dimensions in millimetres
≥ 90°
IEC
Key
1 locking collar
2 drain cleaner cable locking mechanism
3 direction of rotation
Figure 102 – Locking mechanism for drain cleaner cable

≤ 12
Annexes
The annexes of Part 1 are applicable except as follows:
Annex I
(informative)
Measurement of noise and vibration emissions
NOTE In Europe (EN 62841-2-21), Annex I is normative.
I.2 Noise test code (grade 2)
This clause of Part 1 is applicable except as follows:
I.2.4 Installation and mounting conditions of the power tools during noise tests
Addition:
Drain cleaners are suspended in such a way as to correspond to normal use. They are
tested without a drain cleaner cable installed.
I.2.5 Operating conditions
Addition:
Drain cleaners are tested at no-load. Speed settings are set to the highest speed.
The temperature requirements of 5.6 are not applicable.
I.3 Vibration
This clause of Part 1 is applicable except as follows:
I.3.3.2 Location of measurement
Addition:
Figure I.101 shows the positions for drain cleaners.
I.3.5.3 Operating conditions
Addition:
Drain cleaners are tested at no-load with no drain cleaner cable installed. Speed settings
are set to the highest speed.
The drain cleaner is held horizontally during the test.
I.3.6.2 Declaration of the vibration total value
Addition:
The vibration total value a of the handle with the highest emission and the uncertainty K shall
h
be declared.
– 14 – IEC 62841-2-21:2017 © IEC 2017
Detail of transducers
(measurement in axes X, Y, Z)
IEC
Figure I.101 – Positions of transducers for drain cleaners

Annex K
(normative)
Battery tools and battery packs
K.1 Scope
Addition:
All clauses of this Part 2-21 apply unless otherwise specified in this annex.
K.8.14.1.101 Safety instructions for drain cleaners
Items a) and b) are not applicable.
K.14.5 This subclause is not applicable.
K.21.15 This subclause is not applicable.
NOTE In Europe (EN 62841-2-21), the following additional subclause applies:
K.21.18.Z101 Isolation and disabling device
Tools with an integral battery shall either be equipped
– with an isolation device to prevent the risk of injury from mechanical hazards during servicing or user
maintenance; or
– with a disabling device that prevents unintentional starting of the tool.
An isolation device shall
– provide disconnection of all poles of the battery from the serviceable region of the tool;
– be equipped with an unambiguous indication of the state of the disconnection device which corresponds to
each position of its manual control (actuator);
– be provided with protection against accidental reconnection.
NOTE 1 Examples of methods to achieve this disconnection include removable jumpers, integral batteries
that can be disconnected for servicing or user maintenance, or an electromechanical power switch with a
direct mechanical link between the actuator and the contact.
NOTE 2 The risk of accidental reconnection for a power switch is addressed by the requirement of
21.18.1.2. The other examples in NOTE 1 achieve this by the necessary actions for reconnection.
A disabling device may be achieved by any of the following:
– a self-restoring or non-self-restoring lock-off device where two separate and dissimilar actions are
necessary before the motor is switched on (e.g. a power switch which has to be pushed in before it can
be moved laterally to close the contacts to start the motor). It shall not be possible to achieve these two
actions with a single grasping motion or a straight line motion;
– a removable disabling device provided with the tool where it shall not be possible for the tool to be
operated when either applied or removed.
Compliance is checked by inspection and by manual test.

– 16 – IEC 62841-2-21:2017 © IEC 2017
Annex L
(normative)
Battery tools and battery packs provided
with mains connection or non-isolated sources
L.1 Scope
Addition:
All clauses of this Part 2-21 apply unless otherwise specified in this annex.
NOTE In Europe (EN 62841-2-21), the following additional subclause applies:
L.21.18.Z101 Isolation and disabling device
Tools with an integral battery shall either be equipped
– with an isolation device to prevent the risk of injury from mechanical hazards during servicing or user
maintenance; or
– with a disabling device that prevents unintentional starting of the tool.
An isolation device shall
– provide disconnection of all poles of the battery from the serviceable region of the tool;
– be equipped with an unambiguous indication of the state of the disconnection device which corresponds to
each position of its manual control (actuator);
– be provided with protection against accidental reconnection.
NOTE 1 Examples of methods to achieve this disconnection include removable jumpers, integral batteries
that can be disconnected for servicing or user maintenance, or an electromechanical power switch with a
direct mechanical link between the actuator and the contact.
NOTE 2 The risk of accidental reconnection for a power switch is addressed by the requirement of
21.18.1.2. The other examples in NOTE 1 achieve this by the necessary actions for reconnection.
A disabling device may be achieved by any of the following:
– a self-restoring or non-self-restoring lock-off device where two separate and dissimilar actions are
necessary before the motor is switched on (e.g. a power switch which has to be pushed in before it can
be moved laterally to close the contacts to start the motor). It shall not be possible to achieve these two
actions with a single grasping motion or a straight line motion;
– a removable disabling device provided with the tool where it shall not be possible for the tool to be
operated when either applied or removed.
Compliance is checked by inspection and by manual test.

Bibliography
The bibliography of Part 1 is applicable, except as follows:
Addition:
IEC 62841-3-14, Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety – Part 3-14: Particular requirements for transportable drain
cleaners
___________
_____________
Under preparation. Stage at time of publication: IEC CDV 62841-3-14:2016.

– 18 – IEC 62841-2-21:2017 © IEC 2017

SOMMAIRE
AVANT-PROPOS . 19
1 Domaine d'application . 21
2 Références normatives . 21
3 Termes et définitions . 21
4 Exigences générales . 22
5 Conditions générales d'essai . 22
6 Rayonnement, toxicité et dangers analogues . 22
7 Classification . 22
8 Marquage et indications . 22
9 Protection contre l'accès aux parties actives. 23
10 Démarrage . 23
11 Puissance et courant . 24
12 Échauffements. 24
13 Résistance à la chaleur et au feu . 24
14 Résistance à l'humidité . 24
15 Protection contre la rouille . 24
16 Protection contre la surcharge des transformateurs et des circuits associés . 24
17 Endurance . 24
18 Fonctionnement anormal . 25
19 Dangers mécaniques . 25
20 Résistance mécanique . 25
21 Construction . 26
22 Conducteurs internes. 26
23 Composants . 26
24 Raccordement au réseau et câbles souples extérieurs . 27
25 Bornes pour conducteurs externes . 27
26 Dispositions de mise à la terre . 27
27 Vis et connexions . 27
28 Lignes de fuite, distances d’isolement et distances à travers l’isolation . 27
Annexes . 30
Annexe I (informative) Mesure des émissions acoustique et de vibration . 30
Annexe K (normative) Outils fonctionnant sur batteries et blocs de batteries . 32
Annexe L (normative) Outils fonctionnant sur batteries et blocs de batteries équipés
d’une connexion avec le réseau ou avec des sources non isolées . 33
Bibliographie . 34

Figure 101 – Exemple de furet . 28
Figure 102 – Mécanisme de blocage pour câble de furet . 29
Figure I.101 – Positions des transducteurs pour les furets . 31

Tableau 4 – Niveaux de performance exigés . 25

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
OUTILS ÉLECTROPORTATIFS À MOTEUR, OUTILS PORTABLES
ET MACHINES POUR JARDINS ET PELOUSES – SÉCURITÉ –

Partie 2-21: Exigences particulières pour les furets portatifs

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour
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conditions fixées par accord entre les deux organisations.
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l’objet de droits de brevet. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale IEC 62841-2-21 a été établie par le comité d’études 116 de l'IEC:
Sécurité des outils électroportatifs à moteur.
...