SIST EN ISO 19432:2006

SLOVENSKI STANDARD
SIST EN ISO 19432:2006
01-september-2006
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Building construction machinery and equipment - Portable, hand-held, internal
combustion engine driven cut-off machines - Safety requirements and testing (ISO
19432:2006)
Baumaschinen und -ausrüstungen - Tragbare, handgeführte Trennschleifmaschinen mit
Verbrennungsmotor - Sicherheit und Prüfverfahren (ISO 19432:2006)
Machines et matériel pour la construction des bâtiments - Tronçonneuses a disques,
portatives, a moteur a combustion interne - Exigences de sécurité et essais (ISO
19432:2006)
Ta slovenski standard je istoveten z: EN ISO 19432:2006
ICS:
25.140.01 5RþQDRURGMDQDVSORãQR Hand-held tools in general
91.220 Gradbena oprema Construction equipment
SIST EN ISO 19432:2006 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 19432
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2006
ICS 91.220 Supersedes EN 1454:1997
English Version
Building construction machinery and equipment - Portable,
hand-held, internal combustion engine driven cut-off machines -
Safety requirements and testing (ISO 19432:2006)
Machines et matériel pour la construction des bâtiments - Baumaschinen und -ausrüstungen - Tragbare,
Tronçonneuses à disques, portatives, à moteur à handgeführte Trennschleifmaschinen mit
combustion interne - Exigences de sécurité et essais (ISO Verbrennungsmotor - Sicherheit und Prüfverfahren (ISO
19432:2006) 19432:2006)
This European Standard was approved by CEN on 9 March 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19432:2006: E
worldwide for CEN national Members.

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EN ISO 19432:2006 (E)





Foreword


This document (EN ISO 19432:2006) 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 September 2006, and conflicting national
standards shall be withdrawn at the latest by September 2006.

This document supersedes EN 1454:1997.

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(s).

For relationship with EU Directive(s), 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, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 19432:2006 has been approved by CEN as EN ISO 19432:2006 without any
modifications.

2

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EN ISO 19432:2006 (E)



ANNEX ZA
(informative)

Relationship between this International Standard and the Essential
Requirements of EU Directive 98/37/EC, amended by Directive

98/79/EC

This International Standard has been prepared under a mandate given to CEN by the European

Commission and the European Free Trade Association to provide one means of conforming to
Essential Requirements of the New Approach Directive Machinery Directive 98/37/EC, amended by
Directive 98/79/EC.

Once this standard is cited in the Official Journal of the European Communities under that Directive
and has been implemented as a national standard in at least one Member State, compliance with
the normative clauses of this International standard confers, within the limits of the scope of this
standard, a presumption of conformity with Essential Requirement 2.2 of that Directive and
associated EFTA regulations.

WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this International standard.

3

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INTERNATIONAL ISO
STANDARD 19432
First edition
2006-03-15

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




Reference number
ISO 19432:2006(E)
©
ISO 2006

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ISO 19432:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO 19432:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 List of significant hazards . 4
5 Safety requirements and verification. 5
5.1 General. 5
5.2 Handles . 6
5.3 Speed . 6
5.4 Engine stopping device. 7
5.5 Throttle control . 7
5.6 Clutch. 8
5.7 Exhaust gases. 8
5.8 Cutting debris discharge . 8
5.9 Tank openings. 9
5.10 Protection against contact with parts under high voltage . 9
5.11 Transmission cover(s). 9
5.12 Protection against contact with hot parts. 9
5.13 Cut-off wheel guard . 11
5.14 Flange locking device. 12
5.15 Flange assembly. 13
5.16 Spindle diameter. 14
5.17 Special tools. 14
5.18 Noise . 14
5.19 Vibration . 14
6 Information for use . 15
6.1 Instruction handbook . 15
6.2 Markings . 18
6.3 Warnings. 18
Annex A (normative) Strength test of cut-off wheel guard. 19
Annex B (normative) Noise test code — Engineering method (grade 2 of accuracy) . 21
Annex C (normative) Measurement of vibration values at the handles . 29
Annex D (informative) Recommended pictorials and symbols . 36
Bibliography . 37

© ISO 2006 – All rights reserved iii

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ISO 19432:2006(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.
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ISO 19432:2006(E)
Introduction
The structure of safety standards in the field of machinery is as follows.
a) Type-A standards (basis standards) give basic concepts, principles for design, and general aspects that
can be applied to machinery.
b) Type-B standards (generic safety standards) deal with one or more safety aspect(s) or one or more
type(s) of safeguards that can be used across a wide range of machinery:
⎯ type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
⎯ type-B2 standards on safeguards (e.g. two-hands controls, interlocking devices, pressure-sensitive
devices, guards).
c) Type-C standards (machinery safety standards) deal with detailed safety requirements for a particular
machine or group of machines.
This International Standard is a type-C standard as stated in ISO 12100-1.
When provisions of this type-C standard are different from those which are stated in type-A or type-B
standards, the provisions of this type-C standard take precedence over the provisions of the other standards
for machines that have been designed and built according to the provisions of this type-C standard.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered as
indicated in the scope of this International Standard.
This International Standard is based on EN 1454:1998 and an ANSI draft.

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INTERNATIONAL STANDARD ISO 19432:2006(E)

Building construction machinery and equipment — Portable,
hand-held, internal combustion engine driven cut-off
machines — Safety requirements and testing
1 Scope
This International Standard specifies safety requirements and their verification by testing 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 to those machines designed purposely for use with a rotating, bonded-abrasive and/or
superabrasive (diamond) cut-off wheel having a maximum outside diameter of 406 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 related to the hand-held use of such machines
(see Clause 4). It 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 machines
designed in accordance with this International Standard are intended to be used by persons who have read
and understood the safety requirements given in the “instruction handbook” and who use the appropriate
personal protective equipment (PPE).
Except for noise, environmental aspects are not considered by this International Standard; nor are cut-off
[1] [2]
wheel specifications given — for such specifications, see, for example, EN 12413 and EN 13236 .
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 3744:1994, Acoustics — Determination of sound power levels of noise sources using sound pressure —
Engineering method in an essentially free field over a reflecting plane
ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and
equipment
ISO 5348:1998, Mechanical vibration and shock — Mechanical mounting of accelerometers
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 7293:1997, Forestry machinery — Portable chain-saws — Engine performance and fuel consumption
ISO 7914:2002, Forestry machinery — Portable chain-saws — Minimum handle clearance and sizes
ISO 8041:1990, Human response to vibration — Measuring instrumentation
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ISO 19432:2006(E)
ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission
sound pressure levels at a work station and at other specified positions — Engineering method in an
essentially free field over a reflecting plane
ISO/TR 11688-1:1995, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning
ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology
ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical
principles
ISO 13852:1996, Safety of machinery — Safety distances to prevent danger zones being reached by the
upper limbs
ISO 16063-1:1998, Methods for the calibration of vibration and shock transducers — Part 1: Basic concepts
IEC 60745-1:2003, 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 12100-1 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
3.7
engine stopping device
device by which the stopping of the power source is initiated
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ISO 19432:2006(E)
3.8
flange contact surface
area between the inner and the 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 power source housing
3.11
idle speed
speed at which the engine runs with no load and throttle control released and the cut-off wheel does not rotate
3.12
reactive forces
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 outside 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 full open throttle and no load
3.16
silencer
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
3.19
throttle control
device for controlling the engine speed
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ISO 19432:2006(E)
3.20
throttle lock
device for temporarily setting the throttle in a partially open position, to aid starting
3.21
throttle 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 control 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 List of significant hazards
This clause lists significant hazards, hazardous situations and events as far as they are dealt with in this
document, identified by risk assessment as significant for this type of machinery, and which require action to
eliminate or reduce the risk. See Table 1.
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ISO 19432:2006(E)
Table 1 — List of significant hazards
Clause(s) in this
No. Hazard International Standard
dealing with the hazard
1 Mechanical hazards due to cutting, impact and reactive forces (i.e. climbing, 5.2; 5.11; 5.13; 5.14; 5.15;
pulling and especially reactive forces) related to the cut-off wheel and the 5.16; 6.1.2
transmission to the cut-off wheel
2 Electrical hazards due to contact with parts under high voltage (direct contact) or 5.10
parts which have become under high voltage under faulty conditions (indirect
contact)
3 Thermal hazards resulting in burns, scalds and other injuries, by a possible contact 5.12
of persons with objects or materials with high temperature including the radiation of
heat sources
4 Noise, resulting in hearing losses (deafness) and other physiological disorders 5.18; 6.1; 6.3
(e.g. loss of balance; loss of awareness) and interference with auditory signals and
speech communication
5 Vibration (resulting in peripheral circulatory and nervous functional disturbances in 5.19; 6.1; 6.3
the hand-arm system, such as “white finger” disease)
6 Contact with or inhalation of harmful fluids, gases, mists and fumes related to 5.7.1; 5.8, 5.13.1; 6.1.2, 6.3
exhaust gases and dust related to debris of cut-off materials
7 Fire or explosion related to fuel spillage 5.9, 6.1.2
8 Neglecting of ergonomic principles in machine design such as hazards from 5.2; 5.5; 6.1.2; 6.3
unhealthy postures or excessive efforts and inadequate consideration of human
hand-arm anatomy related to handle design, machine balance
9 Unexpected start-up, unexpected overrun/over-speed from failure/disorder of the 5.2; 5.4; 5.5; 5.6;
control system related to failure in the handles and position of the controls
10 Impossibility of stopping the machine in the best possible conditions related to the 5.2; 5.4
handle strength and position of the engine stopping device
11 Failure of the control system related to handle strength, position of controls and 5.5; 6.3
marking
12 Brake up during operation related to cut-off wheel 5.3; 5.14; 6.1; 6.3
13 Ejection of objects related to debris 5.3; 5.8; 5.13, 6.1.2; 6.3

5 Safety requirements and verification
CAUTION — 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 shall be appropriately trained in the type of work to be carried out. All national regulatory
conditions and health and safety requirements shall be followed.
5.1 General
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, and eye, ear and head protection equipment (see Clause 6).
Cut-off machines shall comply with the safety requirements and/or protective measures of this clause. Cut-off
machines shall also be marked according to 6.2 and wear warnings according to 6.3. In addition, the machine
shall be designed according to the principles of ISO 12100-2 for hazards relevant but not significant, which are
not dealt with by this document.
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ISO 19432:2006(E)
When the machine is placed in its normal position on a flat horizontal surface (see Figure 1), 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 normal position on flat surface
5.2 Handles
5.2.1 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.
Cut-off machines with a system to isolate the machine vibration from the handles shall be designed so that the
machine maintains structural integrity allowing the operator to control the machine, even in the event of partial
or full failure of the vibration isolators.
5.2.2 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.
5.3 Speed
5.3.1 Requirement
Engine speed shall be limited so that it is not possible to accelerate the engine in excess of the maximum
spindle speed. The maximum spindle speed shall be specified in the instruction handbook.
5.3.2 Verification
The limitation to adjust engine speed shall be verified by inspection and measurement. The function of the
throttle control shall be verified by inspection while operating the machine.
The spindle speed shall be measured at the spindle. Simple calculations using the engine speed and the
transmission ratio shall not be permitted due to the potential for slippage in the energy transmission from the
engine to the shaft.
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ISO 19432:2006(E)
5.4 Engine stopping device
5.4.1 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 right hand while holding the saw and wearing protective
gloves. The purp
...