SIST EN 13862:2022

SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN 13862:2002+A1:2009
Talni odrezovalni stroji - Varnost
Floor cutting-off machines - Safety
Bodentrennschleifmaschinen - Sicherheit
Machines à scier les sols - Sécurité
Ta slovenski standard je istoveten z: EN 13862:2021
ICS:
93.080.10 Gradnja cest Road construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13862
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 93.080.10 Supersedes EN 13862:2001+A1:2009
English Version
Floor cutting-off machines - Safety
Machines à scier les sols - Sécurité Bodentrennschleifmaschinen - Sicherheit
This European Standard was approved by CEN on 15 November 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13862:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Safety requirements and/or protective/risk reduction measures . 12
4.1 General . 12
4.2 Mechanical hazards . 12
4.2.1 General . 12
4.2.2 Protection against moving parts . 12
4.2.3 Minimum strength of the guard . 13
4.2.4 Immobilization, stability . 13
4.2.5 Transport and handling . 14
4.2.6 Fixing of the cutting-off wheel(s) . 14
4.2.7 Combustion engine-starting device . 14
4.2.8 Controls . 14
4.2.9 Failure of the power supply . 15
4.3 Electrical hazards . 16
4.3.1 General . 16
4.3.2 Water pump . 16
4.4 Thermal hazards . 16
4.4.1 General . 16
4.4.2 Test method . 16
4.5 Exhaust fumes (and gas) . 16
4.6 Machines having a hydraulic power transmission . 17
4.7 Fluid containers . 17
4.8 Water supply and dust emission . 17
4.9 Rotational speed . 17
4.10 Noise . 17
4.10.1 Noise reduction at the design stage . 17
4.10.2 Noise emission measurement, declaration and verification procedures . 18
4.11 Vibrations . 18
4.11.1 Reduction by design and protective measures . 18
4.11.2 Vibration measurement, declaration and verification procedures . 18
4.12 Maintenance . 18
5 Verification of safety requirements and/or protective/risk reduction measures . 19
6 Information for use . 20
6.1 General . 20
6.2 Marking, warnings and signs . 21
6.2.1 Marking . 21
6.2.2 Warnings and signs . 21
6.3 Accompanying documents . 22
6.3.1 Instruction handbook . 22
6.3.2 Description of the machine . 22
6.3.3 Instructions for transport, handling and storage of the machine and its
dismountable parts . 23
6.3.4 Instructions for the installation and the use of the machine . 23
6.3.5 Maintenance instructions . 24
Annex A (informative) List of significant hazards . 26
Annex B (normative) Noise test code - accuracy grade 2 . 28
B.1 General . 28
B.2 Measurement of the A-weighted emission sound pressure level at the work station
of the operator . 28
B.3 Determination of the sound power level emitted by the machine . 29
B.4 Measurement uncertainties . 29
B.5 Operating conditions . 30
B.6 Information to be recorded . 30
B.7 Information to be reported . 30
B.8 Noise emission declaration by the manufacturer . 31
Annex C (normative) Dimensions of the flanges for cutting-off diamond wheel . 33
C.1 General . 33
C.2 Ratios of the diameters of the cutting-off wheel . 33
C.3 Minimal diameter S of the flange . 34
C.4 Minimal width R of contact surface of the flange with the cutting-off wheel . 34
C.5 Depth of the clearance T . 34
Annex D (normative) Strength of the guards - State of the art concerning the characteristics
of guards used with cutting-off wheels . 35
D.1 General . 35
D.2 Guard specifications . 35
D.2.1 Calculation method for the guard thickness . 35
D.2.2 Example of a minimum thickness of guards made with E24 grade-2 steel . 38
D.2.3 Other methods for determining the minimum thickness of guards . 39
Annex E (informative) Safety signs. 40
Annex F (normative) Verification of surface temperature . 42
F.1 Test equipment . 42
F.2 Test method . 42
F.3 Test acceptance . 42
Annex G (normative) Vibration-test code . 43
G.1 General . 43
G.2 Terms and definitions . 43
G.3 Vibration parameters to be measured and determined. 43
G.4 Instrumentation . 43
G.4.1 General . 43
G.4.2 Accelerometer . 43
G.4.3 Fastening of accelerometer . 44
G.4.4 Calibration . 44
G.5 Operating conditions, testing and declaration of results . 44
G.6 Uncertainties . 45
G.7 Information to be reported . 46
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 47
Bibliography . 50

European foreword
This document (EN 13862:2021) has been prepared by 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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13862:2001+A1:2009.
This document has been prepared under a Standardization Request 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.
The main differences between this standard and EN 13862:2001+A1:2009 are as follows:
a) normative references (Clause 2) revised and updated;
b) list of significant hazards revised and updated;
c) requirements for warnings;
d) requirements for Information for use;
e) requirements for operator's instructions;
f) requirements for noise test code;
g) illustrations and pictograms updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
This document is a type-C standard as stated in EN ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate in the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-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.
1 Scope
This document applies to pedestrian-controlled floor-sawing machines having travel power feed or
manual feed (see 3.1) for sawing, grooving and milling floor surfaces made of concrete, asphalt and
similar mineral building materials where the main power is supplied by electric or internal combustion
prime engine. The power transmission of floor-sawing machines is mechanical or hydraulic.
This document deals with all significant hazards, hazardous situations or hazardous events relevant to
floor sawing machines, when they are used as intended and under conditions of misuse which are
reasonably foreseeable by the manufacturer (see Annex A). This document specifies the appropriate
technical measures to eliminate or reduce risks arising from the significant hazards during the lifetime of
the machinery as described in EN ISO 12100:2010, 5.4.
These machines are designed for use with rotating cutting-off wheels for wet and dry cutting. These
cutting-off wheels can be either a diamond cutting-off wheel or a boron nitride cutting-off wheel.
This document does not apply to:
— self-propelled ride-on floor-sawing machines;
— machines moving along a rail;
— hand-held portable cutting off machines for construction materials mounted on a mobile support, to
be used as floor saws;
— remote-controlled machines.
In this document, floor-sawing machines are called “machines”, and cutting-off wheels are also called
“tools”.
This document applies to machines which are manufactured after the date of approval of the standard by
CEN.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 206:2013+A2:2021, Concrete — Specification, performance, production and conformity
EN 12096:1997, Mechanical vibration — Declaration and verification of vibration emission values
EN 13236:2019, Safety requirements for superabrasive products
EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2016)
EN 60335-2-41:2003, Household and similar electrical appliances — Safety — Part 2-41: Particular
requirements for pumps (IEC 60335-2-41:2002)

As impacted by EN 60335-2-41:2003/A1:2004 and EN 60335-2-41:2003/A2:2010.
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1991)
EN 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 3744:2010)
EN ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components (ISO 4413:2010)
EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
EN 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 5349-2:2001)
EN ISO 8041-1:2017, Human response to vibration — Measuring instrumentation — Part 1: General
purpose vibration meters (ISO 8041-1:2017)
EN 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 11201:2010)
EN ISO 11688-1:2009, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13732-1:2008, Ergonomics of the thermal environment — Methods for the assessment of human
responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006)
EN ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1:2015)
EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)
EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and
construction of fixed and movable guards (ISO 14120:2015)
EN ISO 20643:2008, Mechanical vibration — Hand-held and hand-guided machinery — Principles for
evaluation of vibration emission (ISO 20643:2005)
ISO 5348:2021, Mechanical vibration and shock — Mechanical mounting of accelerometers

As impacted by EN 60529:1991/AC:2006-12, EN 60529:1991/A1:2000, EN 60529:1991/A2:2013 and
EN 60529:1991/A2:2013/AC:2019-02.
As impacted by EN ISO 5349-2:2001/A1:2015.
As impacted by EN ISO 20643:2008/A1:2012.
ISO 16063-1:1998, Methods for the calibration of vibration and shock transducers — Part 1: Basic concepts
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
floor-sawing machine
mobile hand-guided machinery used on sites, designed for sawing, grooving and grinding ground
surfaces made of concrete, asphalt and similar mineral building materials which is pedestrian-controlled
Note 1 to entry: Floor-sawing machines with different types of cutting-depth adjustment shown in Figure 1.

a) Floor-sawing machine with control of b) Floor-sawing machine with control of
cutting depth by swivel arm cutting depth by tiltable chassis
Figure 1 — Types of cutting-depth adjustment
Note 2 to entry: There are different types of floor-sawing machines:
— hand feed machine in which the feed movement is effected by the pushing action of the operator;
— machine with manual feed by mechanical means in which the feed movement is effected by manual
operation of a crank or wheel;
— self-propelled machine whose feed movement is obtained by a power source via mechanical or hydraulic
power transmission. Self-propelled machines are pedestrian-controlled.
Note 3 to entry: Floor-sawing machines comprising the following parts, see Figure 2.
Key
1 frame
2 electric motor or internal combustion engine which generates the power for driving the cutting-off
wheel(s) and which generates the power for the feeding movement to the machine (for self-
propelled machines)
3 cutting-off wheel
4 operator's position, within reach of control devices (e.g. height adjustment, stop switch and travel, if self-
propelled)
5 guard enclosing the not-working part of the rotating cutting-off wheel(s) (tool guard)
6 water supply system for cooling the diamond cutting-off wheel(s)
7 sawing-guiding device of the machine (when necessary)
8 handles (operator's position behind the machine, in-between the handles) for steering and pushing
Figure 2 — Typical example of a pedestrian-controlled floor-sawing machine
Note 4 to entry: Figure 2 is an example of one of the many machines available for floor sawing, grooving and
milling. It illustrates the main components in its construction.
3.2
cutting head
assembly comprising the power unit, the rotating tool(s) and its fixing attachment
Note 1 to entry: It can be integral to the frame of the machine or the drive unit which causes forward movement
of the machine along the ground in order to perform sawing, grooving or milling operation.
3.3
rated spindle speed
speed of the drive spindle, in revolutions per minute (r/min) at the rated conditions specified by the
machine manufacturer without cutting-off wheel(s) and under no load
3.4
cutting-off wheel
rotating abrasive tool(s) which perform(s) the cutting operation; the cutting-off wheel(s) is(are) (a)
rotating (segmented) diamond or boron nitride cutting-off wheel
Note 1 to entry: Cutting-off wheels are mounted either alone or as several units together according to the design
and usage parameters of the machine.
Note 2 to entry: Cutting-off wheels are defined in EN 13236:2019.
3.5
flange
mounting device including several parts which securely hold and position the rotating cutting-off
wheel(s) on the drive spindle
3.6
tool guard
guard which encloses the non-working part of the rotating cutting-off wheel
3.7
nominal mass
mass of the machine equipped with all its dismountable parts, but without the cutting-off wheel(s)
mounted, the attached tank(s) being empty
3.8
maximum operating mass
mass of the machine equipped with all its dismountable parts, ready for use, with the cutting-off wheel(s)
mounted and the attached tank(s) being full
3.9
working area
restricted hazardous area where the machine is operated in cutting process:
— 5 m to the front of the machine in the direction of working;
— 5 m behind the operator's handles in the opposite direction of working;
— 1 m on each side of the cutting-off blade
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Machinery shall comply with the safety requirements and/or protective/risk reduction measures of this
clause. In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for
relevant but not significant hazards which are not dealt with by this document.
Covering each significant individual hazard is sufficient for covering combinations of hazards.
4.2 Mechanical hazards
4.2.1 General
Components and parts which shall be manually handled and all the accessible parts, with the exception
of the tool, shall be free of sharp edges and burrs which could generate hazards when setting, using,
handling, and maintaining the machine. Burrs resulting from, for example, manufacturing, casting or
welding shall be eliminated and sharp edges shall be smoothed.
4.2.2 Protection against moving parts
4.2.2.1 Transmission parts
Rotating transmission parts, for example, couplings and belt drives for drive shafts and mechanical water
pumps shall be provided with fixed enclosing guards to prevent contact. These guards shall comply with
EN ISO 14120:2015 and EN ISO 13857:2019, Table 4. Fixed enclosing guards shall be held in position
either by welding or by mounting them in such a way that they can be opened or removed only with the
aid of tools or keys.
Fixed enclosing guards shall have their fixing system permanently attached to the guard and/or the
machine when the guard is removed.
4.2.2.2 Connection between the cutting head and the frame
When the vertical movement of the cutting head with respect to the frame is power-driven, the design
shall comply with the safety distances according to EN ISO 13857:2019, Table 7.
4.2.2.3 Protection of the cutting-off wheel
4.2.2.3.1 General
In minimum, the upper part of the cutting-off wheel and its non-smooth fixing device(s) (i.e. spindle nuts
or bolts, see Figure D.1) shall be covered with a fixed solid guard complying with EN ISO 14120:2015, to
avoid inadvertent contact and to protect against ejection of fragments from the cutting-off wheel and the
work piece, water, dust and debris.
Specifications concerning the strength of the guards are given in Annex D.
The guard(s) shall be so designed to facilitate safe and easy access for the cutting-off wheel replacement.
When the guard is removed or opened, the guard-fixing system shall be permanently attached to the
guard and/or the machine.
The machine shall be so designed that the absence or the opening of the guard creates a projection of
water, dust or debris during operation, which hinders the intended use of the machine.
4.2.2.3.2 Front open parts in the guard
When the guard is designed with a section which can be opened at the front in order to allow to perform
a cut close to a vertical surface, then:
— the open section shall stay connected to the main guard and shall be held in position when open;
— the non-smooth fixing device of the rotating cutting-off wheel(s) shall remain covered;
— the operator shall be informed to open the front part of the guard only to perform a cut in front of a
vertical surface and of the additional hazards associated to open the guard (see 6.3.4).
4.2.2.3.3 Complementary requirements to prevent contact with the rotating cutting-off wheel(s)
outside the working area
Contact with the cutting-off wheel(s) in rotation during the displacement of the machine outside the
working area shall be prevented as follows:
— either the cutting-off wheel(s) shall be guarded completely except the bottom when the machine is
set for displacement or
— if the cutting-off wheel(s) is(are) not completely guarded, the machine shall be designed to allow
displacement without the cutting-off wheel rotating and the machine shall carry a warning sign
stating the following:
“All displacement of the machine outside the working area shall be carried out with the cutting-off
wheel not in rotation” (see Figure E.2).
4.2.3 Minimum strength of the guard
The guards for rotating cutting-off wheels shall be so designed to resist strains resulting from an
accidental projection of a segment of the cutting-off wheel. Any brittleness damage of the guard material
shall be avoided. A permanent plastic deformation of the guard resulting from stresses is acceptable as
long as the guard fulfils its protective function and can be normally assembled/disassembled.
Annex D indicates characteristics of guards which correctly fulfil their function.
4.2.4 Immobilization, stability
4.2.4.1 Immobilization
Machines whose nominal mass exceeds 100 kg shall be equipped with a device which allows their
immobilization (e.g. mechanical parking brake or self-sustaining system) on a slope of 10° with the
machine in a position and configuration giving the maximum load on the braked wheel(s).
4.2.4.2 Stability
The machines shall be designed and constructed so that they are sufficiently stable under the intended
operating conditions, e.g. movement on site, cutting and parking.
This shall be verified under the most unfavourable conditions with the machine located on a plane
inclined at 10° to the horizontal and with the machine-power source switched off. The immobilization
means (if any) shall be in use during the test. For machines without immobilization means, the wheels
shall be blocked for the test. Under these test conditions, the machine shall not overturn.
4.2.5 Transport and handling
The movable parts of the machine shall be either lockable or removable to avoid any risk of shearing or
crushing e.g. during handling and carrying.
Machines and their component parts which cannot be moved or transported by hand shall be provided
or be capable of being provided with suitable attachment devices for transport by means of lifting gear.
These attachments may be, among others:
— standardized lifting appliances with slings, hooks, eyebolts, or tapped holes for appliance fixing;
— fork-locating devices for machines to be transported by a lift truck.
4.2.6 Fixing of the cutting-off wheel(s)
4.2.6.1 Device for mounting the rotating cutting-off wheel(s)
The device for mounting the rotating cutting-off wheel(s) shall be so designed that loosening and
untightening shall be possible only by an intentional manual action (e.g. fixing the rotating cutting-off
wheel(s) on the drive spindle by a threaded nut, the thread direction of which prevents unscrewing of
the nut during the cutting operation).
4.2.6.2 Flanges
4.2.6.2.1 Mounting of a cutting-off wheel
The flanges intended to mount a rotating cutting-off wheel shall comply with the requirements of
Annex C.
4.2.6.2.2 Mounting of several cutting-off wheels for grooving and milling operations
Where the machine is designed for grooving and milling operations with several cutting-off wheels
mounted on the same spindle, the manufacturer shall specify that the spacer discs which allow the width
of the saw cut to be altered to make the required groove width shall have the following performance
requirements: when rotating, the spacer disc(s) shall be prevented from moving in relation to the cutting-
off wheels and spindle by a positive device and not only by the tightening of the flanges.
4.2.7 Combustion engine-starting device
The combustion 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 and have a recoil device for the rope.
4.2.8 Controls
4.2.8.1 General
For safety-critical functions, PL values shall be determined using the methods of EN ISO 13849-1:2015.
r
The performance level (PL) shall meet the minimum required performance level (PL ) as detailed in
r
Table 1.
Table 1 — Required Performance Levels
Minimum required
Performance Level
Type and purpose of Safety Critical Function (SCF)
(PL )
r
Rotation of cutting-off wheel - prevent unwanted switch-on b
Rotation of cutting-off wheel - provide desired switch-off c
Propulsion - prevent unwanted switch-on b
Propulsion - provide desired switch-off b
Propulsion - hold-to-run for backward travel b
Height adjustment rising Not SCF
Height adjustment lowering a
Restart prevention after power failure b
Provide desired direction of rotation when the cutting-off wheel is not
c
prevented from loosening under reverse rotation

4.2.8.2 Start and stop control device
Floor cutting-off machines shall be fitted with a start and stop control device which allows starting and
stopping of the motor, or of the rotation of the cutting-off wheel. Start and stop control devices shall be
easily accessible to the operator.
A stop control device for machine stop (according to EN 60204-1:2018, category 0, higher category is
allowed) shall be provided. It shall be reachable from the intended operator's position.
4.2.8.3 Control for feed movement
Self-propelled machines shall be equipped with a control at the operator’s position (Figure 2, Key 4)
which allows disengagement of the feed system.
Self-propelled machines with the exception of those with a manually started engine shall be equipped
with a device that shall prevent starting the engine when the feed mode is selected (neutral start
function).
Self-propelled pedestrian-controlled machines whose travelling speed to the operator is greater than
25 m/min (1,5 km/h) shall be equipped with a “hold-to-run” control.
4.2.9 Failure of the power supply
An interruption of the power supply and re-establishment after an interruption shall not lead to a
dangerous situation in particular:
— the machine shall not be restarted automatically, an intentional action shall be necessary;
— the machine shall not be prevented from stopping if the stop command has been given.
4.3 Electrical hazards
4.3.1 General
Machines with an electrical motor shall fulfil the electrical safety requirements of EN 60204-1:2018, in
particular Clauses 4, 5, 6, 14, 15 and 16. In addition to EN 60204-1:2018, 4.4.3, these machines shall work
as intended in an ambient temperature range of 0 °C to 40 °C.
For machines with a three-phase electrical supply, a device enabling phase inversion (to ensure correct
tool rotation) shall be provided.
For machines with an electrical motor, the enclosure of the electric controls shall provide a degree of
protection of at least IP 54 as defined in EN 60529:1991 .
For machines with an internal combustion engine, having a battery for operating the control system
within Safety Extra Low Voltage (SELV below 50 V), the positive battery terminal shall be covered and
the wire/terminal cover shall have a marking symbol (+) positive (Symbol IEC 60417-5005).
4.3.2 Water pump
Where water is supplied by an electrical pump for flushing the tool(s) operating above Safety Extra Low
Voltage (above 50 V), the pump shall fulfil the relevant requirements of EN 60335-2-41:2003 .
4.4 Thermal hazards
4.4.1 General
Handles and other surfaces which require continuous contact shall have a surface temperature not
exceeding 43 °C.
Controls and other parts of the machine which are contacted occasionally shall meet the limits as given
in EN ISO 13732-1:2008, 4.2, according to the chosen material for a contact period up to 5 s, lowest curve.
Hot areas shall meet the levels of EN ISO 13732-1:2008 for a contact period below 1 s. These areas shall
be either located at a distance greater than 120 mm from the gripping areas, or they shall be protected
by shields.
These shields shall be designed to reduce the heat transfer from the surface to the body of the operator,
e.g. by a structured surface, ribs or special coating.
4.4.2 Test method
The test method to verify the surface temperature of the machine is described in Annex F.
The machine parts whose temperatures exceed the permissible limits of EN ISO 13732-1:2008 for
contact not exceeding 1 s and whose surface is greater than 10 cm shall not be accessible to the test cone
(see Annex F).
4.5 Exhaust fumes (and gas)
Internal combustion engine exhausts shall not be directed towards the operator when in the operating
position as specified by the manufacturer.
This requirement is considered fulfilled when the angle of the axis of the exhaust outlet and the
longitudinal axis of the machine, measured from the position of the operator is equal to or greater than
90°.
4.6 Machines having a hydraulic power transmission
The hydraulic system shall comply with the safety requirements of EN ISO 4413:2010.
Hydraulic cylinders intended for erection and lifting (e.g. to raise the cutting-off wheel out of the cut)
shall be fitted with line rupture protection valves. Hydraulic hoses and pipes shall be separated from
electric power wiring and be guarded against hot surfaces and sharp edges.
Pipes and hoses which have to be disconnected in operation shall be fitted with self-sealing couplings.
Couplings shall be marked to ensure correct reconnection.
4.7 Fluid containers
When filled according to manufacturer's instructions, fluid containers except water tanks, and in
particular batteries, fuel system and oil tanks shall be constructed to prevent spillage when the machine
is tilted as specified in the stability test (see 4.2.4).
4.8 Water supply and dust emission
Machines intended for wet cutting shall be equipped with a water-supply device. The volume of water
supplied to the tool(s) shall be sufficient to provide adequate tool flush and dust suppression.
Machines intended for dry cutting shall be equipped with a dust collector port located at the appropriate
place and of a suitable shape and size. This device when connected to a dust collector specified by the
manufacturer shall be capable of controlling the dust.
4.9 Rotational speed
Under the rated conditions of power supply specified by the machine manufacturer, the maximum
rotational speed of the spindle in revolution per minute shall not exceed the level as marked on the
machine (see 6.2).
The rotational speed of the spindle not being equipped with th
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