Bsi bs en 00792 4 2000 + a1 2008

BRITISH STANDARD

Hand-held non-electric
power tools — Safety
requirements —
Part 4: Non-rotary percussive power
tools

ICS 25.140.10; 25.140.99

12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:

BS EN
792-4:2000
+A1:2008


BS EN 792-4:2000+A1:2008

National foreword
This British Standard is the UK implementation of EN 792-4:2000+A1:2008. It
supersedes BS EN 792-4:2000 which is withdrawn.
The start and finish of text introduced or altered by amendment is indicated in
the text by tags. Tags indicating changes to CEN text carry the number of the
CEN amendment. For example, text altered by CEN amendment A1 is
indicated by !".
The UK participation in its preparation was entrusted by Technical Committee
MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum
technology to Panel MCE/8/-/2, Hand-held, non-electric power tools — Safety.
A list of organizations represented on this committee can be obtained on
request to its secretary.

This publication does not purport to include all the necessary provisions of a
contract. Users are responsible for its correct application.
Compliance with a British Standard cannot confer immunity from
legal obligations.

This British Standard was
published under the
authority of the Standards
Committee and comes into
effect on 15th August 2000

© BSI 2008

ISBN 978 0 580 61933 5

Amendments/corrigenda issued since publication
Date

Comments

31 December 2008

Implementation of CEN amendment A1:2008


EUROPEAN STANDARD

EN 792-4:2000+A1

NORME EUROPÉENNE

EUROPÄISCHE NORM

September 2008

ICS 25.140.99; 25.140.10

Supersedes EN 792-4:2000

English Version

Hand-held non-electric power tools - Safety requirements - Part
4: Non-rotary percussive power tools
Machines portatives à moteur non électrique - Prescriptions
de sécurité - Partie 4: Machines portatives non rotatives à
percussion

Handgehaltene nicht-elektrisch betriebene Maschinen Sicherheitsanforderungen - Teil 4: Nicht drehende,
schlagende Maschinen

This European Standard was approved by CEN on 26 May 2000 and includes Amendment 1 approved by CEN on 23 July 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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

© 2008 CEN

All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.

B-1050 Brussels

Ref. No. EN 792-4:2000+A1:2008: E


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Contents

Page

Foreword..............................................................................................................................................................3
Introduction .........................................................................................................................................................4
1

Scope ......................................................................................................................................................5

2

Normative references ............................................................................................................................6

3
3.1
3.2

Terms and definitions ...........................................................................................................................7
General terms and definitions ..............................................................................................................7
Terms and definitions related to non-rotary percussive power tools..............................................7

4

List of hazards........................................................................................................................................8

5
5.1
5.2
5.3
5.4
5.5
5.6
5.7

Safety requirements and measures .....................................................................................................9
Mechanical safety ..................................................................................................................................9
Thermal safety........................................................................................................................................9
Noise .......................................................................................................................................................9
Vibration ...............................................................................................................................................10
Materials and substances processed, used or exhausted ..............................................................10

Ergonomics ..........................................................................................................................................10
Safety related measures and means..................................................................................................11

6
6.1
6.2

Information for use ..............................................................................................................................11
Marking, signs and written warnings.................................................................................................11
Instruction for use ...............................................................................................................................12

7
7.1
7.2
7.3
7.4

Verification ...........................................................................................................................................14
Noise .....................................................................................................................................................14
Vibration ...............................................................................................................................................14
Unintentional start ...............................................................................................................................14
Structure of verification ......................................................................................................................15

Annex A (informative) Examples of non-rotary percussive power tools covered by this part .................16
Annex B (informative) Symbols for labels and signs ....................................................................................17
Annex C (normative) Safety requirements related to the internal combustion engines ...........................18
Annex ZA (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC".......................................................................................21
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC"...................................................................................22

Bibliography ......................................................................................................................................................23

2


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Foreword
This document (EN 792-4:2000+A1:2008) has been prepared by Technical Committee CEN/TC 255 "Handheld, non-electric power tools - Safety", the secretariat of which is held by SIS.
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 March 2009 and conflicting national standards shall be withdrawn at
the latest by December 2009.
This European Standard 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 Annexes ZA and ZB, which are integral parts of this
document."
This document includes Amendment 1, approved by CEN on 2008-07-23.
This document supersedes EN 792-4:2000.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
The standard has been created in close co-operation with CENELEC/TC 61F with the aim of achieving
requirements for mechanical safety in the EN 50144 series, which are similar for hand-held electric and nonelectric power tools.
The annexes to this part of the standard are:
Annex A (informative) Examples of power tools covered by this part
Annex B (informative) Labels, signs and tags
!Annex C (normative) Safety requirements related to the internal combustion engines"
!Annexes ZA and ZB" (informative) Clauses of this European Standard addressing essential
requirements or other provisions of EU Directives.
This standard also contains a Bibliography.
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, 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.

3


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Introduction
This European standard is a type C standard as stated in EN 1070.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this standard.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of other standards, for machines that
have been designed and built according to the provisions of this type C standard.
The European Standard, EN 792, consists of a number of independent parts for individual types of hand-held
non-electric power tools.
Other EN standards deal with safety rules for hand-held power tools used in e.g. the following fields:


agriculture and forestry such as chain saws, hedge-trimmers, brush cutters, grass trimmers,



construction and building such as cutting-off power tools, concrete vibrators,



food industry, such as fowl secateurs, sheep shears.

Endeavours have been made to achieve co-ordination with the relevant Technical Committees so that the
safety requirements are compatible.
This standard is divided in the following parts:
Part 1 - Assembly power tools for non-threaded mechanical fasteners (former part 14)
Part 2 - Cutting-off and crimping power tools (former part 15)
Part 3 - Drills and tappers
Part 4 - Non rotary percussive power tools
Part 5 - Rotary, percussive power drills
Part 6 - Assembly power tools for threaded fasteners
Part 7 - Grinders
Part 8 - Sanders and polishers
Part 9 - Die grinders
Part 10 - Compression power tools
Part 11 - Nibblers and shears
Part 12 - Small circular, small oscillating and reciprocating saws
Part 13 - Fastener driving tools

4


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Certain parts of EN 792 cover hand-held non-electric power tools, driven by internal combustion engines
powered by gaseous or liquid fuel. In these parts, the safety aspects relating to internal combustion engines
are found in a normative annex.
The parts are type C standards and refer to pertinent European Standards of type A and B where such

standards are applicable.

1

Scope

The standard EN 792 applies to hand-held non-electric power tools driven by rotary or linear motors, powered
by compressed air, hydraulic fluid and intended to be used by one operator and supported by:


the operator's hand or hands,



a suspension, e.g. a balancer.

This part, EN 792-4, applies to non electric power tools used for chipping, riveting, breaking of concrete and
asphalt, ramming etc. This part lists the significant hazards caused by such power tools and specifies safety
requirements valid for different aspects of safety during their foreseeable lifetime.
Power tools covered by this part of the standard:


breakers,



chipping hammers,



chisels, small,



engraving pens,



needle scalers,



pick hammers,



pile drivers,



punches,



rammers,



riveting hammers,



scaling hammers,



stone working tools,



spades,



tampers.

Special requirements and modifications on a hand-held power tool for the purpose of mounting it in a fixture
are not covered by this part.
For those power tools which are driven by an internal combustion engine the particular safety requirements
related to the engine are dealt with in annex C.

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BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

2

Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of the publications referred to
in this European Standard are valid only when they are incorporated in this standard by amendment or
revision. For undated references the latest edition of the publication referred to, applies (including
amendments).
EN 292-1:1991, Safety of machinery - Basic concepts, general principles for design – Part 1: Basic
terminology, methodology
EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design – Part 2: Technical
principles and specifications
EN 563, Safety of machinery - Temperatures of touchable surfaces - Ergonomics data to establish
temperature limit values for hot surfaces
EN 614-1, Safety of machinery - Ergonomic design principles – Part 1: Terminology and general principles
EN 1070, Safety of machinery - Terminology
EN 12096, Mechanical vibration - Declaration and verification of vibration emission values
EN ISO 4871, Acoustics - Declaration and verification of noise emission values of machinery and equipment
(ISO 4871:1996)
!EN ISO 15744:2008, Hand-held non-electric power tools – Noise measurement code – Engineering
method (grade 2) (ISO 15744:2002)"
EN 28662-1, Hand-held portable power tools - Measurement of vibrations at the handle – Part 1: General (ISO
8662-1:1988)
EN 28662-5, Hand-held portable power tools - Measurement of vibrations at the handle – Part 5: Pavement
breakers and hammers for construction work (ISO 8662-5:1992)
EN ISO 8662-9, Hand-held portable power tools - Measurement of vibrations at the handle – Part 9: Rammers
(ISO 8662-9:1996)
ISO 3857-3, Compressors, pneumatic tools and machines – Vocabulary – Part 3: Pneumatic tools and
machines.
ISO 5391, Pneumatic tools and machines – Vocabulary
ISO 9158, Road vehicles - Nozzles spouts for unleaded fuel

ISO 9159, Road vehicles - Nozzles spouts for leaded gasoline and diesel fuel

6


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

3

Terms and definitions

For the purposes of this part of the standard, the following terms and definitions apply:

3.1 General terms and definitions
3.1.1 hand-held power tool: Machine driven by rotary or linear motors powered by compressed air, hydraulic
fluid, gaseous or liquid fuel, electricity or stored energy (e.g. by a spring) to do mechanical work and so
designed that the motor and the mechanism form an assembly that can easily be brought to its place of
operation. The hand-held power tool is operated by one or two hands.
NOTE
Hand-held power tools driven by compressed air or gas are called pneumatic tools. Hand-held power tools
driven by hydraulic liquid are called hydraulic tools.

3.1.2

inserted tool: Tool inserted in the power tool to perform the intended work.

3.1.3

service tool: Tool intended for performing maintenance or service on the power tool.

3.1.4 control device: Device to start and stop the power tool or to change the direction of the rotation or to
control the functional characteristics such as speed and power.
3.1.5 maximum operating pressure: Maximum pressure that the power tool is intended to be operated at, as
specified by the manufacturer.

3.2 Terms and definitions related to non-rotary percussive power tools
3.2.1 non-rotary percussive power tool: Power tool, which delivers a series of percussive blows, without
rotary action of the inserted tool.
For other terms, see EN 1070 and also ISO 3857-3 and ISO 5391.
For examples of non-rotary percussive power tools see annex A.

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BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

4

List of hazards

The following hazards can occur in the use of non-rotary percussive power tools. For hazards that can occur
in power tools driven by an internal combustion engine, see annex C.
Hazard type

Reference to safety requirement
By design or
guarding

Information
for use

4.1 Mechanical hazards
- cutting

5.1.1
6.2.2

- crushing
- friction or abrasion hazard

5.1.1

- ejection of parts

5.1.3

- loss of stability

5.1.2
6.2.2

- whipping hose
- ejection from high pressure hydraulic systems

5.1.4

- hose and hose coupling specifications

6.2.2

4.2 Electrical hazards

6.2.2

4.3 Thermal hazards
- explosions

5.2

- health damage due to hot or cold surfaces

5.2

4.4 Hazards caused by noise

5.3

6.2.2

4.5 Hazards generated by vibration

5.4

6.2.2

- inhalation of harmful dust

5.5.1

6.2.2

- exhaust air and gases

5.5.1

6.2.2

- lubricants

5.5.2

4.6 Hazards caused by materials and substances
processed, used or exhausted

- hydraulic fluids

6.2.2

4.7 Hazards caused by neglecting ergonomic
principles
- repetitive strain injuries

5.6.1, 5.6.2

- unsuitable postures
- inadequate grip design and tool balance

6.2.2

5.6.1

- neglected use of personal protective equipment

6.2.2

4.8 Hazards caused by failure of energy
- unexpected return of energy supply after a
breakdown

6.2.2

- incorrect hydraulic fluid flow and outlet pressure

6.2.2

4.9 Hazards caused by missing and/or incorrectly
positioned safety related means

8

- start and stop device

5.7.1

- unintentional start

5.7.2

BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

5

Safety requirements and measures

5.1 Mechanical safety
5.1.1

Surfaces, edges and corners

Accessible parts of non-rotary percussive power tools, except the inserted tool, shall not have sharp edges or
angles or rough or abrasive surfaces, see 3.1 of EN 292-2:1991.
5.1.2

Supporting surface and stability

Non-rotary percussive power tools shall be so designed that they can be laid aside and remain in stable
position on a plane surface.
5.1.3

Ejection of parts

Non-rotary percussive power tools shall be equipped with a retainer to prevent ejection or falling out of the
inserted tool.
5.1.4

High pressure ejection

Hydraulic systems of the power tools shall be enclosed so as to give protection against high pressure fluid
ejection.

5.2 Thermal safety
Surface temperatures of parts of the power tools which are held during use or could be inadvertently touched
shall follow the provisions of EN 563.
NOTE

The limit values for low temperatures are studied by CEN/TC 122.

Power tools for use in potentially explosive atmospheres should comply with EN 1127-1. However because
the suitability of a power tool for use in potentially explosive atmospheres will depend not only on the power
tool but the inserted tool and the workpiece, it is not possible to give any detailed advice in this standard.

5.3 Noise
5.3.1

General

The emission of noise from a hand-held power tool shall be kept as low as possible.
The noise emission from using hand-held power tools emanates from three main sources:


the hand-held power tool itself



the inserted tool



the workpiece.

NOTE

5.3.2

Generally, the manufacturer has no possibility of influencing the noise emitted by the processed workpiece.

Noise emitted by the hand-held power tool

The noise emitted by the hand-held power tool itself can be divided into:


noise from the motor,

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BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)



noise from exhaust air or gases at pneumatic tools,



vibration induced noise.

The noise from the exhaust of air and gases is one major contributor of noise from pneumatic driven handheld power tools. A silencer of good design will reduce this noise.
The principles contained in EN ISO 11688-1 should be followed to reduce the noise emitted by the power tool.
NOTE
The exhaust air or gases can also be piped away in a hose away from the operator, however this method has
limitations in practice.

Vibration induced noise can be reduced by use of acoustic isolation and vibration damping.

5.4 Vibration
Vibration at the handle of a hand-held power tool shall be kept as low as possible.
The principles contained in CR 1030-1 should be followed to reduce the vibration emitted by the power tool.

5.5 Materials and substances processed, used or exhausted
5.5.1

Exhaust air or gas

For non-rotary percussive power tools driven with compressed air or gas or by an internal combustion engine
the exhaust air or gases shall be directed in such a way that it cannot cause a hazard to the operator and so
that any secondary effects are minimized. e.g. blowing the dust and reflected air or gas from the workpiece
onto the operator.
5.5.2

Lubricants

Lubricants for non-rotary percussive power tools, specified by the manufacturer, shall not cause hazards to
the operator or the environment.

5.6 Ergonomics
5.6.1

Design of the handle

Handles and other parts used for gripping the power tools shall be designed to ensure that the operator is able
to grip the non-rotary percussive power tool correctly and to perform the expected work. Handles shall suit the
functional anatomy of the hand and the dimensions of the hands of the operator population. See 3.6 of
EN 292-2:1991 and EN 614-1.
Power tools having a mass greater than 2 kg (including the inserted tool) shall be capable of being supported
by two hands whilst being lifted or operated.
5.6.2

Control device

The control device shall be adapted to the handle or to the part of the power tool being gripped by the
operator so that it can be held comfortably in the run position.
For non-rotary percussive power tools, which are intended to be started frequently or are intended to be used
for precision work, the trigger force shall be small.
For non-rotary percussive power tools which are normally used in operations of long duration the force to keep
the start device in the run position shall be small.

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BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

NOTE
For breakers and possibly other heavy non-rotary percussive power tools this rule may not be applicable as
the force to keep the control device in the start position is part of the feed force.

For further information on trigger forces for control devices see EN 894-3:2000.

5.7 Safety related measures and means
5.7.1

Start and stop device

Non-rotary percussive power tools shall be equipped with a single control device to start or stop them. It shall
be arranged near the handle so that the operator can activate it without releasing the grip on the handles.
The start and stop device shall be so designed that the inserted tool ceases to be powered when the start and
stop device is released. Without manual effort it shall, when released, move to the stop position, i.e. be of the
type "hold to run".
The start and stop device shall be in the stop position or immediately move to the stop position when the nonrotary percussive power tool is connected to the energy supply.
It shall not be possible to lock the start and stop device in the running position.
For power tools driven by an internal combustion engine, see C.3.5.
5.7.2

Unintentional start

The start and stop device shall be so designed, positioned or guarded that the risk of unintentional start is
minimized. Verification shall be made according to clause 7.3.

6

Information for use

6.1 Marking, signs and written warnings
!Non-rotary percussive power tools shall be marked visibly, legibly and indelibly with the following minimum
particulars:


the business name and full address of the manufacturer and, where applicable, his authorized
representative;



designation of the machinery;



the CE Marking (see Annex III);



designation of series or type;



serial number, if any;



the year of construction, that is the year in which the manufacturing process is completed."

Non-rotary percussive power tools shall be permanently marked with a graphical symbol, stating that the
operator's instruction shall be read before work starts, according to annex B.
Other graphical symbols that can be used are shown in annex B. Additional marking for power tools driven by
internal combustion engines see annex C, C 4.1

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EN 792-4:2000+A1:2008 (E)

6.2 Instruction for use
6.2.1

General

The instructions for use shall be drawn up by the manufacturer and contain:


operator's instruction,



maintenance instruction.

The operator's instructions shall be drawn up in according to 5.5.2 of EN 292-2 and annex A, 1.7.4 and 2.2 of
EN 292-2:1991. Concerning residual risks see 5.5 of EN 292-1:1991.
6.2.2

Operator's instruction

The operator's instruction shall include a description of the correct use of the non-rotary percussive power tool
and make reference to the appropriate inserted tools.
The operator's instruction shall state that any other use is forbidden.
Foreseeable misuse of the power tool, which experience has shown to occur, shall be warned against.
!The operator's instruction shall give information on airborne noise emissions:



the A-weighted emission sound pressure level at workstations, where this exceeds 70 dB (A); where this
level does not exceed 70 dB (A), this fact shall be indicated;



the peak C-weighted instantaneous sound pressure value at workstations, where this value exceeds
63 Pa (130 dB in relation to 20 µPa);



the A-weighted sound power level emitted by the machinery, where the A-weighted emission sound
pressure level at workstations exceeds 80 dB(A)."

!The operator's instruction shall give information on vibration total value in the handles, including
uncertainty of measurement."
The reference numbers of the applied standards for noise and vibration measurements shall be given.
The operator's instruction shall recommend the use of ear protectors.
Warnings shall be given:


that non-rotary percussive power tools are not generally insulated for coming into contact with electric
power sources;



that power tools shall not be used in potentially explosive atmospheres unless specially designed for that
purpose;



that working with a percussive tool can generate dust which, depending on the material being worked on,
could be harmful to the operator;



that working with percussive tools can cause the ejection of elements at chipping or demolishing work;



that the inserted tool on heavy types of non-rotary percussive power tools, e.g. breakers, is exposed to
heavy strains and can after a long period of use break due to fatigue;



that unexpected tool movement or breakage of inserted tool may cause injuries to the lower limbs;

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BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)



that unsuitable postures may not allow counteracting of normal or unexpected movement of the power
tool. A working position shall be adopted which remains stable in the event of a break up of the inserted
tool;



that holding the inserted tool by the free hand can be a source of vibration damage. Advice against this
practice shall be given;



that pneumatic and hydraulic tools shall be isolated from the energy source before changing the inserted
tool;



of the risk of a whipping compressed air hose at pneumatic tools;



that particles may be ejected, when chipping or demolishing. Appropriate environmental and personal
protection shall be used.

Instructions shall be given:


on suitable postures to counteract the effects of a sudden break of the inserted tool;



release the start and stop device in the case of an interruption of the energy supply;



that only lubricants recommended by the manufacturer shall be used;



that, at hydraulic tools, only hydraulic fluids recommended by the manufacturer shall be used.

Information shall be given for hydraulic non-rotary percussive power tools regarding the design and dimension
of couplings:


specification of the coupling;



specification of hoses with regard to pressure and flow;



maximum flow;



maximum inlet pressure;



maximum inlet temperature of the inlet fluid.

NOTE

6.2.3

It is recommended to check with the manufacturer if non-flammable fluids can be used.

Maintenance instruction

The maintenance instruction shall contain:


instruction to keep the power tool safe by regular maintenance;



information on when the regular maintenance shall be carried out; for instance after a specified time of
operation, a specified number of cycles/operations, a stated number of times per year;



instructions for disposal so as not to impose hazards to personnel and the environment;

!


the specifications of the spare parts to be used, when these affect the health and safety of operators."

For power tools driven by internal combustion engines, see annex C, C.3.5.

13

BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

7

Verification

7.1 Noise
Compliance with 5.3and 6.2.2 shall be verified as follows:
An equivalent continuous A-weighted sound pressure level at workstation shall be measured, and stated
according to !EN ISO 15744:2008".
An A-weighted sound power level shall be measured and stated according to !EN ISO 15744:2008".
The noise emission values shall be declared according to EN ISO 4871.
NOTE
For EC countries measurement and declaration of noise emission values for power tools within the scope of
directive 79/113/EEC and 84/537/EEC shall be made according to these directives.

7.2 Vibration
Compliance with 5.4 and 6.2.2 shall be verified as follows:
The vibration level at the handle of the power tool shall be measured and stated according to EN 28662-1 and
EN 28662-5 and EN ISO 8662-9.
The vibration value shall be declared according to EN 12096.

7.3 Unintentional start
Compliance with 5.7.2 shall be verified as follows:


with the retainer removed1)
Connect the non-rotary percussive power tool to the energy supply. Place and maintain it in any possible
position on a horizontal plan. Establish that the start and stop device cannot initiate running in any of

those positions.



with the retainer mounted
Operation of the start and stop device shall not occur when the power tool is pulled across the horizontal
plane by its hose.

1)

14

This test is dangerous and adequate protective measures must be taken.


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

7.4 Structure of verification
Safety requirement

5.1.1

Visual
check

Functional
check

Measurement

Reference to
clauses of this
standard or to
other standards

X

Surfaces, edges and
angles
5.1.2

X

Stability
5.1.3

X

Retainer
5.1.4

X

High pressure ejection
5.2

X

EN 563

X

!EN ISO
15744:2008"

X

EN 28662-1
EN 28662-5
EN ISO 8662-9

Thermal safety
5.3
Noise
5.4
Vibration
5.5.2

X

Dust
5.6.1

X

Handle
5.6.2

X

X

Control device
5.7.1

X

Start and stop device
5.7.2

X

clause 7.3

Unintentional start

15


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Annex A
(informative)
Examples of non-rotary percussive power tools covered by this part

E breaker
F marteau brise-béton
D Brecher

E rammer
F marteau fouloir
D Stampfer

E bush hammer
F marteau bouchardeur
D Aufbruchhammer

E riveting hammer
F marteau riveur
D Niethammer

E chipping hammer
F marteau burineur
D Meisselhammer

E scaling hammer
F marteau dérouilleur-détartreur
D Abklopfhammer

E needle scaler
F marteau à aiguilles
D Nadelabklopfer

E : spade
F : marteau bêche
D : Spatenhammer

E pick hammer

F marteau piqueur
D Abbauhammer

E : tamper
F : marteau bourre-ballast
D : Stopfer

E pile driver
F marteau batteur de pieux
D Pfahlramme

E punch
F perforateur
D Stanze

16


BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Annex B
(informative)
Symbols for labels and signs

Symbol

Significance

Colours

Corresponding
standard

B.1

The operator's instruction
must be read before work
starts

Background: blue
Symbol: white

B.2

Hearing protection must be
worn

Background: blue
Symbol: white

ISO 3864
EN 61310-1
EN 61310-2

B.3

Eye protection must be used
or safety glasses worn

Background: blue
Symbol: white

ISO 3864
EN
61310-1
EN 61310-2

B.4

Engine oil

Background:
optional
Symbol: black

ISO 7000-0248

B.5

Fuel

Background:
optional
Symbol: black

ISO 7000-0245

17

BS EN 792-4:2000+A1:2008
EN 792-4:2000+A1:2008 (E)

Annex C
(normative)
Safety requirements related to the internal combustion engines

C.1 General
This annex covers the safety requirements to internal combustion engines of hand-held power tools, both
rotary and linear ones and powered by liquid or gaseous fuel.

C.2 List of hazards
This list of hazards is specific to the case when the energy source is an internal combustion engine.

Reference to safety requirement

Hazard type

By design or
guarding
C.2.1 Mechanical hazards

Information
for use

C.3.1

- incorrect carburettor adjustment
C.2.2 Electric hazards

C.3.2

- electric hazards
C.2.3 Thermal hazards

C.3.3

- radiation of heat sources
C.2.4 Hazards generated by materials
substances processed, used or exhausted

and

6.2

- resulting from contact with or inhalation of harmful
fluids, gases, mists and fumes
- fires or explosion hazards
- incorrect fuel
C.2.5. Hazards caused by functional disorders
- resulting from unexpected ejection of fluid
- break down of pressurized gas container
C.2.6 Hazards caused by missing or incorrectly
positioned safety related measures and means

C.3 Safety requirements and measures
C.3.1 Mechanical safety
Carburettors or other fuel management system devices, if adjustable, shall be able to be adjusted from the
outside without removal of casing parts and the control devices shall be easily and safely accessible.

18