SIST EN IEC 62841-3-7:2021/A11:2021

Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws

This standard applies to transportable wall saws guided by a track guiding system intended for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar material by means of a diamond wheel.  The rated speed of the diamond wheel does not exceed a peripheral speed of 100 m/s at rated capacity.

Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und Rasen- und Gartenmaschinen - Sicherheit - Teil 3-7: Besondere Anforderungen für transportable Wandsägen

Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 3-7: Exigences particulières pour les scies murales portables

Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 3-7. del: Posebne zahteve za premične stenske žage - Dopolnilo A11

General Information

• Status: Published
• Public Enquiry End Date: 31-Oct-2020
• Publication Date: 07-Jun-2021
• ICS: 25.080.60 - Sawing machines
• ICS: 25.140.20 - Electric tools
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jun-2021
• Due Date: 09-Aug-2021
• Completion Date: 08-Jun-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN IEC 62841-3-7:2021/A11:2021 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws

Relations

• Amends: SIST EN IEC 62841-3-7:2021 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws
• Effective Date: 01-Jul-2021

Overview

SIST EN IEC 62841-3-7:2021/A11:2021 is a European safety standard developed by the CLC (European Committee for Electrotechnical Standardization) that specifies particular safety requirements for transportable wall saws. These saws are electric motor-operated, guided by a track system, and designed for cutting concrete, stone, or similar materials using a diamond wheel. This amendment A11 updates the original EN IEC 62841-3-7:2021 and focuses on ensuring the safe design, construction, and operation of these specialized cutting tools.

The scope covers transportable wall saws intended for dry cutting or connected to a liquid cooling system, with diamond wheel speeds not exceeding 100 m/s peripheral speed. It excludes wall saws with automatic cutting direction changes, hydraulic systems, and hand-held cut-off machines, which are addressed separately.

Key Topics

• Safety Requirements
  The standard emphasizes safe handling, mechanical strength, and operational controls. It mandates features such as at least one handle for manual feed, easily accessible controls for feed motor direction and operation, and compliance with mechanical strength requirements to reduce risk during use.

• Noise and Vibration Emissions
  EN IEC 62841-3-7 includes detailed provisions for measuring sound pressure levels and vibration emissions according to ISO standards. It specifies how operators should be informed of noise levels and the necessity of hearing protection, enhancing occupational safety.

• Marking and Instructions
  Clear warnings and instructions must be provided, including warnings against leaving the wall saw unattended during operation to prevent jamming or accidents. Noise emission information and recommendations for using hearing protection are mandated for user awareness.

• Electrical Safety and Supply
  The standard governs supply connection and external flexible cords, requiring heavy-duty sheathed cords for durability and safety. It also addresses control overrides, ensuring local saw unit controls take precedence over remote commands to prevent unintended operation.

• Fundamental Modifications
  This latest amendment introduces several modifications to existing clauses covering scope, normative references, definitions, mechanical hazards, mechanical strength, and construction. Additionally, it includes normative annexes detailing relationships with international standards and regulatory directives.

Applications

• Construction and Demolition
  Transportable wall saws compliant with EN IEC 62841-3-7:2021/A11 are essential for precision cutting in construction projects, such as concrete wall openings, expansion joints, and structural modifications.

• Stone and Masonry Work
  The standard ensures safe and effective operation when cutting natural stone or similar materials, supporting artisans and contractors in landscaping and building façades.

• Industrial Maintenance and Renovation
  Its safety criteria help maintain workplace safety during renovation activities involving concrete or masonry cutting, reducing hazards related to tool operation and noise exposure.

• Manufacturers and Importers
  Compliance with this standard enables manufacturers and importers to ensure their transportable wall saw products meet European safety regulations, facilitating market entry and user confidence.

Related Standards

• EN 62841-1:2015
  Part 3-7 is to be used in conjunction with this general requirements standard for electric motor-operated hand-held and transportable tools, providing a comprehensive safety framework.

• ISO 11201:2010 & ISO 11203:1995
  These ISO standards are referenced for measuring noise emissions, ensuring consistent acoustic performance assessment.

• EN ISO 12100
  The standard follows the general principles of risk assessment and safety of machinery as defined by EN ISO 12100.

• IEC 61008-1
  Related to residual current operated circuit-breakers (RCCBs), referenced for electrical safety compliance.

• Directive 2006/42/EC
  The standard supports conformity with the essential health and safety requirements of the European Machinery Directive, ensuring regulatory compliance within the EU.

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Keywords: transportable wall saws, EN IEC 62841-3-7, CLC safety standard, electric motor-operated tools, diamond wheel cutting, concrete cutting safety, noise emission measurement, construction tool safety, motor-operated hand-held tools, European machinery safety directive, safety compliance for wall saws, noise protection for power tools.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2021
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 3-
7. del: Posebne zahteve za premične stenske žage - Dopolnilo A11
Electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery - Safety - Part 3-7: Particular requirements for transportable wall saws
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses -
Sécurité - Partie 3-7: Exigences particulières pour les scies murales portables
Ta slovenski standard je istoveten z: EN IEC 62841-3-7:2021/A11:2021
ICS:
25.080.60 Strojne žage Sawing machines
25.140.20 Električna orodja Electric tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62841-3-7:2021/A11

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2021
ICS 25.140.20
English Version
Electric motor-operated hand-held tools, transportable tools and
lawn and garden machinery - Safety - Part 3-7: Particular
requirements for transportable wall saws
Outils électroportatifs à moteur, outils portables et machines Elektrische motorbetriebene handgeführte Werkzeuge,
pour jardins et pelouses - Sécurité - Partie 3-7: Exigences transportable Werkzeuge und Rasen- und
particulières pour les scies murales portables Gartenmaschinen - Sicherheit - Teil 3-7: Besondere
Anforderungen für transportable Wandsägen
This amendment A11 modifies the European Standard EN IEC 62841-3-7:2021; it was approved by CENELEC on 2021-04-26. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the
status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62841-3-7:2021/A11:2021 E

EN IEC 62841 3 7:2021/A11:2021 (E)
European foreword
This document (EN IEC 62841-3-7:2021/A11:2021) was prepared by CLC/TC 116 “Safety and
environmental aspects of motor-operated electric tools”.
The following dates are fixed:
• latest date by which this document has (dop) 2022-04-26
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2025-04-26
standards conflicting with this document
have to be withdrawn
This document modifies by common modifications EN IEC 62841-3-7:2021, which consists of the text of
116/455/FDIS (future IEC 62841-3-7, Ed. 1) prepared by IEC/TC 116 “Safety of motor-operated electric
tools”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This series is divided into four parts:
Part 1: General requirements which are common to most hand-held electric motor operated tools (for the
purpose of this standard referred to simply as tools) which could come within the scope of this standard;
Part 2, 3 or 4: Requirements for particular types of tools which either supplement or modify the
requirements given in Part 1 to account for the particular hazards and characteristics of these specific
tools.
The Part 3-7 is to be used in conjunction with EN 62841-1:2015 and its amendments.
The Part 3-7 supplements or modifies the corresponding clauses in EN 62841-1:2015, so as to convert it
into the European Standard: Particular requirements for transportable wall saws.
Where a particular subclause of Part 1 is not mentioned in Part 3-7, that subclause applies as far as
relevant. When 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 smaller roman type.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes, tables and figures which are additional to those in Part 1 are numbered starting
from 101.
Clauses, subclauses, notes, tables, figures and annexes which are additional to those in
IEC 62841-3-7:2020 are prefixed “Z”.
This document follows the overall requirements of EN ISO 12100.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association and supports essential requirements of EU Directive(s).
EN IEC 62841 3 7:2021/A11:2021 (E)
For the relationship with EU Directive(s), see informative Annex ZZ, which is an integral part of this
document.
Compliance with the clauses of Part 1 together with Part 3-7 provides one means of conforming with the
essential health and safety requirements of the Directive concerned.
EN IEC 62841 3 7:2021/A11:2021 (E)
1 Modification to Clause 1, “Scope”
Replace the existing text of Clause 1 with the following:
“This clause of Part 1 is applicable, except as follows:
Replacement of the third paragraph:
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.
Addition:
This document applies to transportable wall saws guided by a track guiding system intended for dry
cutting or to be connected to a liquid system for cutting concrete, stone or similar material by means of a
diamond wheel. The rated speed of the diamond wheel does not exceed a peripheral speed of 100 m/s
at rated capacity.
This document does not apply to transportable wall saws with a design that allows an automatic change
of the cutting direction without user intervention before any change of the cutting direction.
This document does not apply to transportable wall saws that employ hydraulic systems.
This document does not apply to hand-held cut-off machines.
NOTE 101 Hand-held cut-off machines will be covered by a future part of IEC 62841-2.
This document covers all significant hazards, hazardous situations or hazardous events relevant for tools
covered by this standard.
NOTE Z101 Essential requirements not mentioned in Table ZZ.1 are deemed to be not applicable, because the
corresponding hazards are either not relevant for tools covered by this standard or do not require specific action by
the designer.”
2 Addition to Clause 2, “Normative references”
Add the following normative reference and information and delete from the Bibliography:
"Replacement of normative reference ISO 11203:
ISO 11203:1995, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions from the sound power level"
3 Modification to Clause 3, “Terms and definitions”
Replace the existing 3.106 with the following:
“3.106
saw unit
unit on which the diamond wheel, the wheel guard, the saw unit feed motor, if any, and the interface to
connect it to the track guiding system are mounted”
4 Modifications to Clause 8, “Marking and instructions”
Add the following additional safety warning to 8.14.1.101:
“f) Never leave the wall saw unattended during operation. This reduces the risk of jamming the
diamond wheel which could cause loss of control or damage to the wall saw.
NOTE This warning is omitted, if the wall saw is equipped with a momentary power switch without a provision
to lock it in the “on” position.”
EN IEC 62841 3 7:2021/A11:2021 (E)
Replace the text and NOTE after 8.14.2 c) 101) with the following:
“8.14.2 Za) Replacement:
Emissions
1) The noise emission, measured in accordance with I.2, as follows:
— A-weighted emission sound pressure level L and its uncertainty K , where L exceeds
pA pA pA
70 dB(A).
Where L does not exceed 70 dB(A), this fact shall be indicated;
pA
— A-weighted sound power level L and its uncertainty K , where the A-weighted emission
WA WA
sound pressure level L exceeds 80 dB(A);
pA
— C-weighted peak emission sound pressure level L , where this exceeds 130 dB in relation
pC,peak
to 20 µPa.
2) Recommendation for the operator to wear hearing protection.
3) The following information:
— that the declared noise emission value(s) have been measured in accordance with a standard
test method and may be used for comparing one tool with another;
— that the declared noise emission value(s) may also be used in a preliminary assessment of
exposure.
4) A warning:
— that the noise emissions during actual use of the power tool can differ by up to 10 dB compared
to the declared values, depending on the diamond wheel and working conditions, which should
be taken into account when selecting hearing protection; and
— of the need to identify safety measures to protect the operator that are based on an estimation of
the noise exposure in the actual conditions of use (taking account of all parts of the operating
cycle such as the times when the tool is switched off and when it is running idle in addition to the
trigger time).”
5 Addition to Clause 19, “Mechanical hazards”
Add the following new subclause 19.4:
“19.4 Addition:
Wall saws with manual feed shall have at least one handle or grasping surface to ensure safe handling
during use.”
6 Modifications to Clause 20, “Mechanical strength”
Add the following new subclause 20.3:
“20.3 Addition:
If a wall saw includes any hand-held unit(s) such as a remote control, only 20.3.1 applies for these
hand-held unit(s).”
Replace the first paragraph of subclause 20.5 with the following:
“Wall saw handles and grasping surfaces for safe handling during use as required by 19.4 shall have
adequate mechanical strength in order to provide insulation between the grasping area and the output
shaft.”
EN IEC 62841 3 7:2021/A11:2021 (E)
7 Modifications to Clause 21, “Construction”
Replace the existing subclause 21.30 with the following:
“21.30 This subclause of Part 1 is applicable for handles and grasping surfaces for safe handling during
use as required by 19.4.”
Replace the third paragraph of subclause 21.102 with the following:
“Controls on the saw unit shall override commands from the remote control.”
Delete the existing subclause 21.104.
Replace the existing subclause 21.105 with the following:
“21.105 Tools equipped with motor-fed saw units shall be fitted with (an) additional control(s),
separate from the power switch, for
— selecting the direction of travel for the saw unit feed motor; and
— turning the saw unit feed motor off and on.
The actuating member of this control(s) shall be easily visible
...