SIST EN ISO 19432:2012

SLOVENSKI STANDARD
SIST EN ISO 19432:2012
01-oktober-2012
1DGRPHãþD
SIST EN ISO 19432:2008
6WURMLLQRSUHPD]DJUDGLWHYREMHNWRY3UHQRVQLURþQLUH]DOQLNL]PRWRUMHP]
QRWUDQMLP]JRUHYDQMHP9DUQRVWQH]DKWHYH,62
Building construction machinery and equipment - Portable, hand-held, internal
combustion engine driven cut-off machines - Safety requirements (ISO 19432:2012)
Baumaschinen und -ausrüstungen - Tragbare, handgeführte Trennschleifmaschinen mit
Verbrennungsmotor - Sicherheit und Prüfungen (ISO 19432:2012)
Machines et matériels pour la construction des bâtiments - Tronçonneuses à disque,
portatives, à moteur à combustion interne - Exigences de sécurité (ISO 19432:2012)
Ta slovenski standard je istoveten z: EN ISO 19432:2012
ICS:
91.220 Gradbena oprema Construction equipment
SIST EN ISO 19432:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 19432:2012

---------------------- Page: 2 ----------------------

SIST EN ISO 19432:2012


EUROPEAN STANDARD
EN ISO 19432

NORME EUROPÉENNE

EUROPÄISCHE NORM
July 2012
ICS 91.220 Supersedes EN ISO 19432:2008
English Version
Building construction machinery and equipment - Portable,
hand-held, internal combustion engine driven cut-off machines -
Safety requirements (ISO 19432:2012)
Machines et matériels pour la construction des bâtiments - Baumaschinen und -ausrüstungen - Tragbare,
Tronçonneuses à disque, portatives, à moteur à handgeführte Trennschleifmaschinen mit
combustion interne - Exigences de sécurité (ISO Verbrennungsmotor - Sicherheitsanforderungen (ISO
19432:2012) 19432:2012)
This European Standard was approved by CEN on 23 June 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard 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 CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19432:2012: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 19432:2012
EN ISO 19432:2012 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .4

2

---------------------- Page: 4 ----------------------

SIST EN ISO 19432:2012
EN ISO 19432:2012 (E)
Foreword
This document (EN ISO 19432:2012) has been prepared by Technical Committee ISO/TC 195 "Building
construction machinery and equipment" in collaboration with Technical Committee CEN/TC 151 “Construction
equipment and building material machines - Safety” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at
the latest by January 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 19432:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 19432:2012 has been approved by CEN as a EN ISO 19432:2012 without any modification.
3

---------------------- Page: 5 ----------------------

SIST EN ISO 19432:2012
EN ISO 19432:2012 (E)
Annex ZA
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard confers, within the limits of the scope of this standard, a presumption of conformity with the
relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING: Other requirements and other EU Directives may be applicable to the products falling within the
scope of this standard.


4

---------------------- Page: 6 ----------------------

SIST EN ISO 19432:2012

INTERNATIONAL ISO
STANDARD 19432
Second edition
2012-07-15

Building construction machinery and
equipment — Portable, hand-held,
internal combustion engine driven cut-off
machines — Safety requirements
Machines et matériels pour la construction des bâtiments —
Tronçonneuses à disque, portatives, à moteur à combustion interne —
Exigences de sécurité




Reference number
ISO 19432:2012(E)
©
ISO 2012

---------------------- Page: 7 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2012
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 ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2012 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
4  Safety requirements and verification . 4
4.1  General . 4
4.2  Handles . 5
4.3  Spindle speed . 5
4.4  Engine-starting device . 5
4.5  Engine-stopping device . 6
4.6  Throttle control system . 6
4.7  Clutch . 8
4.8  Exhaust gases . 8
4.9  Cutting-debris discharge . 8
4.10  Fuel and oil system . 9
4.11  Protection against contact with parts under high voltage . 9
4.12  Transmission cover(s) . 10
4.13  Protection against contact with hot parts . 10
4.14  Cut-off wheel guard . 12
4.15  Flange locking device . 13
4.16  Flange assembly . 13
4.17  Spindle diameter . 15
4.18  Special tools . 15
4.19  Noise . 15
4.20  Vibration . 15
4.21  Electromagnetic immunity . 16
5  Information for use . 16
5.1  Instruction handbook . 16
5.2  Markings . 19
5.3  Warnings . 20
Annex A (normative) Strength test of cut-off wheel guard . 21
Annex B (normative) Noise test code — Engineering method (grade 2 of accuracy) . 23
Annex C (normative) Measurement of vibration values at the handles . 31
Annex D (normative) Cut-off machine positions . 38
Annex E (informative) Summary of results from round-robin tests (2007 and 2008) on one cut-off
machine . 40
Annex F (informative) List of significant hazards . 41
Bibliography . 43

© ISO 2012 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 19432 was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment.
This second edition cancels and replaces the first edition (ISO 19432:2006), which has been technically
revised, primarily concerning:
 additional requirement for starting device (4.4);
 throttle trigger (4.6);
 unintentional movement (4.6.2);
 throttle lock (4.6.3);
 additional requirements for tank strength (4.10);
 additional requirements for transmission cover (4.12);
 clarification of the parts to be recognized as hot parts, including temperature limits (4.13.1);
 additional requirement for electromagnetic immunity;
 added requirement for declaration of uncertainties to noise and vibration values (5.1.1, B.8 and C.10);
 modifications in required markings (5.2) and warnings (5.3) including durability requirements for labels;
 modified calculation of values for equivalent sound power, sound pressure and hand vibration (Annexes B
and C);
 stricter specification for accelerometer mounting (C.4.3) and position (C.5);
 inclusion of a simulated feeding force to the vibration test procedure (C.8);
 definition of machine positions (Annex D);
 additional information on reproducibility for noise and vibration measurements (Annex E);
 a new informative Annex F covering a list of significant hazards.
iv © ISO 2012 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
Introduction
This International Standard is a type-C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this International Standard.
When requirements of this type-C standard are different from those which are stated in type-A or -B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
© ISO 2012 – All rights reserved v

---------------------- Page: 11 ----------------------

SIST EN ISO 19432:2012

---------------------- Page: 12 ----------------------

SIST EN ISO 19432:2012
INTERNATIONAL STANDARD ISO 19432:2012(E)

Building construction machinery and equipment — Portable,
hand-held, internal combustion engine driven cut-off
machines — Safety requirements
1 Scope
This International Standard specifies safety requirements, and measures for their verification, for the design
and construction of portable, hand-held, internal combustion engine-driven, cut-off machines, intended to be
used by a single operator in the cutting of construction materials, such as asphalt, concrete, stone and metal.
It is applicable only to those machines designed purposely for use with a rotating, bonded-abrasive and/or
super-abrasive (diamond) cut-off wheel having a maximum outer diameter of 430 mm, centre-mounted on,
and driven by, a spindle shaft, where the top of the wheel rotates away from the operator (see Figure 1).
This International Standard deals with all significant hazards, hazardous situations or hazardous events
significant to these machines when they are used as intended and under conditions of misuse which are
reasonably foreseeable by the manufacturer. (See Annex F for a list of significant hazards.)
This International Standard specifies methods for the elimination or reduction of hazards arising from their use,
as well as the type of information on safe working practices to be provided with the machines.
Cut-off wheel specifications are not considered in this International Standard; for such specifications, see, for
1 12 15
example, ISO 603-7 , ISO 13942 and ISO 22917 .
This International Standard is not applicable to machines manufactured before the date of its publication.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
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 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and
equipment
ISO 5349-2:2001, Mechanical vibration — Measurement and evaluation of human exposure to hand-
transmitted vibration — Part 2: Practical guidance for measurement at the workplace
ISO 7293, Forestry machinery — Portable chain-saws — Engine performance and fuel consumption
ISO 7914:2002, Forestry machinery — Portable chain-saws — Minimum handle clearance and sizes
ISO 8041, Human response to vibration — Measuring instrumentation
© ISO 2012 – All rights reserved 1

---------------------- Page: 13 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions in an essentially free field over a
reflecting plane with negligible environmental corrections
ISO/TR 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning
ISO 12100: 2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 14982:1998, Agricultural and forestry machinery— Electromagnetic compatibility — Test methods and
acceptance criteria
ISO 16063-1, Methods for the calibration of vibration and shock transducers — Part 1: Basic concepts
ISO 20643:2005, Mechanical vibration — Hand-held and hand-guided machinery — Principles for evaluation
of vibration emission
IEC 60745-1:2006, Hand-held motor-operated electric tools — Safety — Part 1: General requirements
IEC 61672-1:2002, Electroacoustics — Sound level meters — Part 1: Specifications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100 and the following apply.
3.1
cut-off wheel
wheel composed of abrasive particles bonded together by an appropriate binder and incorporating, if
necessary, some appropriate form of reinforcement, or made of metal or other materials of similar properties
and having diamond, CBN particles or other suitable abrasive particles bonded to its rim
3.2
arbor hole
centre hole of the cut-off wheel used for mounting the cut-off wheel on the machine spindle
3.3
blotter
washers made from some compressible material (e.g. paper, card or similar), attached to each side of the
cut-off wheel, the function of which is to smooth imperfections in the cut-off wheel and allow a limited degree
of slip when the wheel stalls in use
3.4
choke
device for enriching the fuel air mixture in the carburettor, to aid starting
3.5
clutch
device for connecting and disconnecting the driven member to and from a rotating source of power
3.6
cut-off wheel guard
partial enclosure intended to deflect cutting debris, as well as pieces of the cut-off wheel in the event that the
wheel is broken in operation
2 © ISO 2012 – All rights reserved

---------------------- Page: 14 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
3.7
engine-stopping device
device by which the stopping of the engine is initiated
3.8
flange contact surface
area between the inner and outer circumference on the flange, which forms the contact surface between the
flange and the cut-off wheel
3.9
flange assembly
device provided to clamp and drive the cut-off wheel
3.10
handle
device designed to facilitate safe and easy control of the machine
3.10.1
front handle
handle located at or towards the front of the engine housing
3.10.2
rear handle
handle located at or towards the rear of the engine housing
3.11
idle speed
speed at which the engine runs with no load and throttle trigger released and the cut-off wheel does not rotate
3.12
reactive movement
sudden and unexpected motion of the machine, which can occur when the rotating cut-off wheel contacts a
foreign object during cutting or because of pinching
3.13
maximum depth of cut
t
distance to which the cut-off wheel can enter the work-piece, as measured from the outer diameter of the
wheel to the outside diameter of the flange
3.14
maximum cut-off wheel speed
maximum permitted speed of a new cut-off wheel marked on the cut-off wheel
3.15
maximum spindle speed
maximum speed at which the spindle rotates with a fully open throttle and no load
3.16
muffler
device for reducing engine exhaust noise and directing the exhaust gases
3.17
rated speed
engine speed at which maximum power occurs
3.18
spindle
shaft of the cut-off machine, which supports, retains and drives the cut-off wheel in connection with the flanges
© ISO 2012 – All rights reserved 3

---------------------- Page: 15 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
3.19
throttle trigger
device for controlling the engine speed
3.20
throttle lock
device for setting the throttle in a partially open position, to aid starting
3.21
throttle trigger lock-out
device that prevents the unintentional operation of the throttle trigger until manually released
3.22
throttle control linkage
mechanism which transmits motion from the throttle trigger to the throttle control valve
3.23
transmission cover
device between the engine and the cutting equipment designed to prevent unintentional contact with the
transmission
4 Safety requirements and verification
4.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause. In addition,
the machine shall be designed according to the principles of ISO 12100 for relevant but not significant hazards
which are not dealt with by this International Standard.
The safe running of cut-off machines depends on both the safety requirements according to this clause and
the safe working conditions associated with the use of adequate personal protection equipment (PPE), such
as gloves, leg protection, boots, eye, hearing and head protection equipment, and safe working procedures
(see 5.1).
Cut-off machines shall also be marked according to 5.2 and carry warnings according to 5.3.
The instruction handbook to be provided with the machines shall comply with 5.1.
For protection from contact with moving parts, except the cut-off wheel, any opening shall have a safety
distance to the moving part that meets the requirements of ISO 13857:2008, 4.2.4.1 and 4.2.4.3.
When the machine is placed in its normal resting position (see Figure 1) on a flat horizontal surface, the cut-off
wheel or the guard shall not touch the horizontal plane and the machine shall remain stable.

Figure 1 — Example of cut-off machine placed in a normal position on a flat surface
A method of verification is established for each requirement.
4 © ISO 2012 – All rights reserved

---------------------- Page: 16 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
SAFETY PRECAUTIONS — Some of the tests specified in this International Standard involve
processes that could lead to a hazardous situation. Any person performing tests in accordance with
this International Standard should be appropriately trained in the type of work to be carried out. All
national regulatory conditions and health and safety requirements must be followed.
4.2 Handles
4.2.1 Requirements
Cut-off machines shall have a handle for each hand. These handles shall be designed so that they
 can be fully gripped by an operator when wearing protective gloves,
 provide the necessary sureness of grip by their shaping and surface, and
 conform to the dimensions and clearances, except distances B and C, given in ISO 7914:2002, Table 1,
for tree work service.
Cut-off machines with a system to isolate the machine vibration from the handles shall be designed so that the
operator is able to stop the engine in a controlled manner with the engine-stopping device, even in the event
of partial or full failure of the vibration isolators.
4.2.2 Verification
Dimensions shall be verified by measurements. The ability to control the machine if a failure occurs in the
vibration isolators shall be verified by inspection of the design and function test.
4.3 Spindle speed
4.3.1 Requirement
Engine speed shall be limited so that it is not possible to accelerate the engine so that the maximum spindle
speed (see 5.1) is exceeded.
4.3.2 Verification
The spindle speed shall be measured at the spindle with fully open throttle and no load. The maximum
allowed inaccuracy is 5 r/min.
NOTE Simple calculations using the engine speed and the transmission ratio cannot be permitted due to the potential
for slippage in the energy transmission from the engine to the shaft.
4.4 Engine-starting device
4.4.1 Requirements
The engine-starting device shall be an electric starter or a manual starter. The actuator for the manual starter
shall be permanently attached to the machine.
The cut-off machine with a manual starter shall have a recoil device for the rope.
To activate the electrical starting device, two or more separate and dissimilar actions shall be required. This
also applies to manual starting devices with stored energy.
© ISO 2012 – All rights reserved 5

---------------------- Page: 17 ----------------------

SIST EN ISO 19432:2012
ISO 19432:2012(E)
4.4.2 Verification
The means to start the cut-off machine shall be verified by inspection and a functional test.
4.5 Engine-stopping device
4.5.1 Requirements
The machine shall be fitted with an engine-stopping device by which the engine can be brought to a final stop
and which does not depend on sustained manual effort for its operation. The control for this device shall be so
positioned that it can be operated by the operator's hand while holding the rear handle and wearing protective
gloves.
The colour of the control shall contrast clearly with the background of the engine-stopping device.
4.5.2 Verification
The function of the engine-stopping device shall be verified by inspection while the machine is being operated.
The control location and colour shall be verified by inspection.
4.6 Throttle control system
4.6.1 Dimensions
4.6.1.1 Requirements
The throttle trigger shall be positioned so that
...