SIST EN 1829-1:2010
High pressure water jet machines - Safety requirements - Part 1: Machines
High pressure water jet machines - Safety requirements - Part 1: Machines
This European Standard contains safety-related requirements for high pressure water jet machines with drives of all kinds (e.g. electric motor, internal combustion engine, air and hydraulic) in which pumps are used to generate pressure. This document deals with all significant hazards, hazardous situations and events arising during assembly, erection, operation and servicing relevant to high pressure water jet machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). All references to high pressure water jet machines within this document includes machines for one or more of the following industrial applications: cleaning; surface preparation; material removal; readjustment of concrete; cutting. This document applies to mobile and fixed high pressure water jet machines, in which the water pressure is generated by a pressure generator/pump and in which the maximum allowable working pressure is more than the upper limit fixed in the scope of EN 60335-2-79.
Hochdruck - Wasserstrahlmaschinen - Sicherheitsanforderungen - Teil 1: Maschinen
Diese Norm beinhaltet die sicherheitstechnischen Mindestanforderungen an Hochdruckreiniger und Hochdruckwasserstrahlmaschinen mit Antrieben jeglicher Art, in denen als Druckerzeuger Pumpen eingesetzt werden, sowie an ihre Bau- und Ausrüstungsteile. Hochdruckreiniger und Hochdruckwasserstrahlmaschinen werden nachfolgend als Hochdruckwasserstrahlmaschinen bezeichnet.
Machines à jet d'eau à haute pression - Exigences de sécurité - Partie 1: Machines
La présente Norme européenne traite des prescriptions de sécurité qui s'appliquent, dans le cadre de l'usage prévu et dans les conditions prévues par le fabricant, aux nettoyeurs haute pression et aux machines a jet d'eau a haute pression avec entraînements de toutes sortes (moteur électrique, moteur a combustion interne, entraînement pneumatique et hydraulique) dans lesquels des pompes génerent la pression, avec leurs composants et accessoires. La présente Norme européenne prend en compte les risques significatifs liés a l'utilisation des machines décrites.
Toutes les références de la présente Norme européenne aux machines a jet d'eau a haute pression doivent également inclure les nettoyeurs haute pression. Le terme "pulvérisation" recouvre a la fois la pulvérisation et la découpe.
La présente Norme européenne s'applique aux machines a jet d'eau a haute pression mobiles ou fixes dans lesquelles la pression d'eau est produite par un générateur de pression ou une pompe, et dans lesquelles la pression de service maximale admissible est supérieure a 250 bar.
NOTE Pour les machines qui ont des applications similaires mais qui ne relevent pas du domaine d'application de la présente Norme européenne ni d'aucune autre Norme européenne, les articles pertinents de la présente norme peuvent le cas échéant etre utilisés.
Les machines a jet d'eau a haute pression faisant l'objet de la présente norme sont essentiellement destinées a des applications industrielles telles que :
- le nettoyage ;
- le réajustement du béton ;
- la découpe.
La présente Norme européenne ne s'applique pas aux machines a jet d'eau a haute pression faisant l'objet de l'EN 60335 2 54 et de l'EN 60335 2 79.
La présente Norme européenne traite des exigences techniques de sécurité destinées a réduire les risques listés a l'Article 4, qui peuvent résulter de la fabrication, de l'assemblage, du montage, de l'exploitation et de l'utilisation des machines a jet d'eau a haute pression.
Visokotlačni stroji z vodnim curkom - Varnostne zahteve - 1. del: Stroji
Ta evropski standard vsebuje z varnostjo povezane zahteve za visokotlačne stroje z vodnim curkom s pogonom vseh vrst (npr. z elektromotorjem, z motorjem z notranjim izgorevanjem, na zračni in hidravlični pogon), pri katerih se za nastanek tlaka uporabljajo črpalke. Ta standard obravnava vse velike nevarnosti, nevarne situacije in primere, ki se pojavljajo med sestavljanjem, postavitvijo, delovanjem in servisiranjem, pomembne za visokotlačne stroje z vodnim curkom, ko se uporabljajo kot predvideno in pod pogoji napačne uporabe, ki jo proizvajalec lahko upravičeno predvidi (glej Klavzulo 4). Vsako sklicevanje na visokotlačne stroje z vodnim curkom v tem dokumentu vključuje stroje za eno ali več od naslednjih industrijskih uporab: čiščenje; priprava površine; odstranjevanje materiala; ponovno prilagajanje cementa; rezanje. Ta dokument velja za premične in fiksne visokotlačne stroje z vodnim curkom, pri katerih vodni curek ustvarja generator tlaka/črpalka in pri katerih je največji dovoljeni delovni tlak višji od zgornje meje, določene v obsegu EN 60335-2-79.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochdruck - Wasserstrahlmaschinen - Sicherheitsanforderungen - Teil 1: MaschinenMachines à jet d'eau à haute pression - Exigences de sécurité - Partie 1: MachinesHigh pressure water jet machines - Safety requirements - Part 1: Machines97.080Aparati za nego talFloor treatment appliancesICS:Ta slovenski standard je istoveten z:EN 1829-1:2010SIST EN 1829-1:2010en,fr01-marec-2010SIST EN 1829-1:2010SLOVENSKI
STANDARD
SIST EN 1829-1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1829-1
January 2010 ICS 97.080 English Version
High pressure water jet machines - Safety requirements - Part 1: Machines
Machines à jet d'eau à haute pression - Exigences de sécurité - Partie 1: Machines
Hochdruck-Wasserstrahlmaschinen - Sicherheitsanforderungen - Teil 1: Maschinen This European Standard was approved by CEN on 18 December 2009.
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, Croatia, 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:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1829-1:2010: ESIST EN 1829-1:2010
EN 1829-1:2010 (E) 2 Contents Foreword . 4Introduction . 51Scope . 62Normative references . 63Terms and definitions . 84List of significant hazards . 104.1General . 104.2Hazards from the intended exit of water under high pressure . 104.3Mechanical hazards . 104.4Hazards from transportation . 114.5Electrical hazards . 114.6Thermal hazards . 114.7Hazards due to noise . 114.8Hazards from program controlled high pressure water jet machines . 114.9Hazards from sudden start-up . 114.10Hazards from vibration . 115Safety requirements and/or measures . 115.1General . 115.2Requirements for high pressure water jet machine with intended exit of water under high pressure . 125.3Mechanical requirements . 125.4Requirements for transport . 145.5Electrical requirements . 155.6Requirements for emergency stopping . 155.7Thermal requirements . 155.8Noise reduction . 165.9Requirements for vibration with hand-held spraying devices . 175.10Requirements for program controlled water jet machines . 175.11Marking the control devices . 176Verification of the safety requirements and/or measures . 176.1General . 176.2Hydrostatic pressure test . 176.3Mechanical tests and/or visual inspection . 186.4Transport devices . 186.5Electrical tests . 196.6Testing of emergency stopping . 196.7Thermal tests . 196.8Noise measurement . 196.9Vibration measurement . 196.10Testing of program controlled water jet machines . 196.11Verification of markings . 197Information for use . 197.1General . 197.2Marking and Warnings . 227.3Additional Warnings . 23Annex A (normative)
Noise test code . 25Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 27Bibliography . 28SIST EN 1829-1:2010
EN 1829-1:2010 (E) 3
Figures Figure 1 — Spraying device with support – Principle . 13Figure 2 — Spraying device – Recoil force and torque generation . 14Figure 3 — General warning sign according to ISO 7010:2003, W001 . 21Figure 4 — Hazard symbol Dangerous Voltage according to ISO 7010:2003, W012 . 21Figure 5 — Attention . 21Figure 6 — Example of an additional warning (taken from EN 60335-2-79:2004) . 24Figure 7 — Hazard symbol Hot surfaces according to ISO 7010:2003, W017 . 24 Tables Table 1 — Maximum permitted temperatures for unprotected accessible surfaces on high pressure water jet machines during normal operation . 16 SIST EN 1829-1:2010
EN 1829-1:2010 (E) 4 Foreword This document (EN 1829-1:2010) has been prepared by Technical Committee CEN/TC 197 “Pumps”, the secretariat of which is held by AFNOR. 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 July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. 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 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. EN 1829, High-pressure water jet machines — Safety requirements, consists of the following parts: Part 1: Machines Part 2: Hoses, hose lines and connectors Compliance with the clauses of Part 1 together with those of Part 2 of EN 1829 provides one means of conforming with the essential health and safety requirements of the Directive concerned.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 1829-1:2010
EN 1829-1:2010 (E) 5 Introduction This European Standard is a type C standard as stated in EN ISO 12100-1.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are covered, are indicated in the scope of this document. 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 the other standards, for machines that have been designed and built according to the provisions of this type C standard. SIST EN 1829-1:2010
EN 1829-1:2010 (E) 6 1 Scope This European Standard contains safety-related requirements for high pressure water jet machines with drives of all kinds (e.g. electric motor, internal combustion engine, air and hydraulic) in which pumps are used to generate pressure. This document deals with all significant hazards, hazardous situations and events arising during assembly, erection, operation and servicing relevant to high pressure water jet machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). All references to high pressure water jet machines within this document includes machines for one or more of the following industrial applications: cleaning; surface preparation; material removal; readjustment of concrete; cutting. This document applies to mobile and fixed high pressure water jet machines, in which the water pressure is generated by a pressure generator/pump and in which the maximum allowable working pressure is more than the upper limit fixed in the scope of EN 60335-2-79.
NOTE 1 35 MPa (350 bar) is currently the upper limit for machines covered by EN 60335-2-79.
NOTE 2 In general the machines in the scope will not be in the scope of the Pressure Equipment Directive 97/23/EC. In some cases, specific parts may be in the scope of that directive, but their application is not dealt with in this document. This document does not apply to high pressure cleaners which are dealt with in EN 60335-2-54 and EN 60335-2-79. NOTE 3 EN 60335-2-54 applies to steam cleaners for household use. EN 60335-2-79 applies to high pressure cleaners having a rated pressure not less than 2,5 MPa and not exceeding 35 MPa, as well as steam cleaners and those parts of hot water high pressure cleaners incorporating a steam stage which have a capacity not exceeding 100 l, a rated pressure not exceeding 2,5 MPa and a product of capacity and rated pressure not exceeding 5 MPa·l. This document does not cover additional hazards due to the incorporation of high pressure water jet machines into other process-technology machines. This document does not cover specific hazards associated with explosive atmospheres, use on ships or ambient temperatures outside the range 5 °C to 40 °C. This document does not cover hazards associated with the drives or specific hazards due to any heat generation function. However the hazards due to high temperatures of touchable surfaces are dealt with. Any hazard due to the nature of liquids used for jetting, other than that due to pressure, is excluded from the scope of this European Standard. This document is not applicable to high pressure water jet machines which are manufactured before the date of its publication as EN. 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. SIST EN 1829-1:2010
EN 1829-1:2010 (E) 7 EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 809, Pumps and pump units for liquids — Common safety requirements EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 981, Safety of machinery — System of auditory and visual danger and information signals EN 1088, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 1829-2, High-pressure water jet machines — Safety requirements — Part 2: Hoses, hose lines and connectors EN 12162, Liquid pumps — Safety requirements — Procedure for hydrostatic testing EN 12723:2000, Liquid pumps — General terms for pumps and installations — Definitions, quantities, letter symbols and units EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking (IEC 61310-2:2007) EN 60335-2-79:2004, Household and similar electrical appliances — Safety — Part 2-79: Particular requirements for high pressure cleaners and steam cleaners
(IEC 60335-2-79:2002, modified) EN ISO 3743-1, Acoustics — Determination of sound power levels of noise sources — Engineering method for small, movable sources in reverberant fields - Part 1: Comparison method for hard-walled test
rooms (ISO 3743-1:1994) EN ISO 3744, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11203:1995, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level (ISO 11203:1995) EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) EN ISO 13732-1, 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, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) SIST EN 1829-1:2010
EN 1829-1:2010 (E) 8 EN ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) ISO 7010:2003, Graphical symbols — Safety colours and safety signs — Safety signs used in workplaces and public areas 3 Terms and definitions For the purposes of this document, the definitions given in EN ISO 12100-1:2003, EN 12723:2000 and the following apply.
3.1 high pressure water jet machine machine with nozzle or other variable opening which allows water at high pressure together with any additive (chemical and/or abrasive) to emerge as a free jet
NOTE In general, high pressure water jet machines consist of a drive, a pressure generator, pipelines, hose lines, spraying devices, safety devices, control and measurement devices. 3.2 program controlled high pressure water jet machine machine characterised by spatial separation of the installation site of the pressure generator and the workplace, by permanently installed high pressure lines between the installation site and one or more workplaces having spraying devices incorporating start-up/shut-down of the system by means of external switching mechanisms not activated by the operator of a spraying device NOTE In this context, the activation device of the spraying device is not considered to be a switching mechanism. 3.3 drive power unit consisting of electric motors, combustion engines, hydraulic motors, or air motors depending on the application 3.4 pressure generator unit to generate operating pressure and supply cleaning agent to the spraying device (e.g. pump, intensifier) 3.5 high pressure line pipeline or hose line in which the high pressure water is fed to the point of use 3.6 pipeline pipe which is permanently fixed and operationally connected to pipe fittings or valves 3.7 hose flexible, tubular semi-finished product consisting of several layers and inserts NOTE Hoses and hose lines are covered within part 2 of EN 1829. 3.8 hose line hose mounted with appropriate fittings
NOTE Hoses and hose lines are covered within part 2 of EN 1829. SIST EN 1829-1:2010
EN 1829-1:2010 (E) 9 3.9 spraying device
3.9.1 general spraying device consisting of the activation devices, the spraying pipe, extension pipe or nozzle pipe as well as the nozzle.
NOTE This also includes foot switches, foot valves with hose lines and spraying lances, spraying heads and nozzle mounts 3.9.2 hand-held spraying device spraying device of which the recoil force is to be absorbed by the person activating the spraying device NOTE The activation mechanism can be separated from the spraying device for operating reasons in the form of a foot switch (e.g. for spraying lances). 3.9.3 mechanically operated spraying device spraying device of which the recoil force is absorbed by a mechanical restraint 3.10 activation device
3.10.1 dry shut-off device device for hand-held spraying devices by which the feed of liquid to the high pressure nozzle is actuated by opening or shutting a valve
NOTE When shut no liquid exits the nozzle. 3.10.2 dump device device for hand-held spraying devices where by opening or shutting of a valve the feed of liquid is directed to a bypass pipe by which the generated pressure is limited by the means of the larger bypass nozzle while the pipe to the high pressure nozzle is kept open 3.10.3 dump gun hand-held spraying device in which the dump device is incorporated 3.11 safety device device that automatically prevents any relevant critical parameter such as pressure or temperature being exceeded 3.12 rated outlet pressure pressure that occurs at the pressure generator for the volume flow and nozzle size specified by the manufacturer 3.13 maximum allowable working pressure
pressure up to which the machine is functional and at which the machine may safely be run 3.14 operating temperature of the liquid temperature of the liquid at any specified point SIST EN 1829-1:2010
EN 1829-1:2010 (E) 10 3.15 retooling modification of the machines performance by using alternative components (e.g. replacement inserts and alternative nozzles) 3.16 replacement inserts changeable installation to a pressure generator, with pistons/plungers/seals/safety valves for different diameters resulting in different displacements and pressures 3.17 pulsation damper device to diminish the amplitude of
pressure pulsations 3.18 test pressure gauge pressure to which a part, component or pump is subjected for the purpose of strength or leak testing 3.19 cleaning agent water with or without the addition of gaseous, soluble or miscible detergent or solid abrasive 4 List of significant hazards 4.1 General This clause contains all the significant hazards, hazardous situations and events within the scope of this European Standard, identified by risk assessment as significant for this type of machinery and which require action to eliminate or reduce the risk. 4.2 Hazards from the intended exit of water under high pressure
The jet of water leaving the nozzle of a high pressure water jet machine is a hazard; by the abrasive cutting effect, by intruding into objects or by swinging or deflecting the high pressure water jet nozzle and hose. 4.3 Mechanical hazards 4.3.1 General The components of a high pressure water jet machine together constitute a system under internal pressure. Mechanical hazards can arise, for example, from uncontrolled escape of pressurised water – except from the nozzle – due to pressure exceeding the working values or due to defects to pressure-retaining parts.
4.3.2 Spraying devices 4.3.2.1 Hazards from hand-held spraying devices In particular, there is a mechanical hazard associated with hand-held spraying devices due to the recoil forces caused by the emerging water jet. Unintended or high frequency activation of the mechanism may cause other hazards. SIST EN 1829-1:2010
EN 1829-1:2010 (E) 11 4.3.2.2 Hazards from mechanically held spraying devices Hazards to the stability of mechanically held spraying devices can arise from the recoil of the emerging water jet. 4.3.3 Hazards from mobile machines
In the case of mobile machines, there is a danger from unintended movement and their rolling away. 4.4 Hazards from transportation Hazards during transportation can arise due to tipping over, shifting or falling. 4.5 Electrical hazards Hazards can arise in particular due to contact of the water jet with electrical components. 4.6 Thermal hazards Risk of burn or scald from contact with hot surfaces or emerging liquids.
4.7 Hazards due to noise There is a risk to health from exposure to noise.
Exposure to noise may result in hearing loss, tinnitus and other physiological disorders. Noise can increase the risk of accidents, as it may not be possible to hear warning signals or faults occurring in machinery.
4.8 Hazards from program controlled high pressure water jet machines Hazards can arise from the intended as well as from the unintended exit of the water jet or the movement of machine parts. 4.9 Hazards from sudden start-up Hazards can arise by the sudden start-up of the machine and the supply of pressure to the spraying device. 4.10 Hazards from vibration Hazards can arise from hand held spraying devices due to residual pulsation from the pressure generator. NOTE Hazards can occur from residual pressure in hose lines e.g. on a dry shut-off system, even when the pressure generator is switched off. These hazards are dealt with in part 2 of EN 1829. 5 Safety requirements and/or measures 5.1 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 in EN ISO 12100-2 for hazards which are not dealt with by this document. SIST EN 1829-1:2010
EN 1829-1:2010 (E) 12 For the application of Type B standards (such as EN 614-1, EN 953, EN 981, EN 1088, EN 60204-1, EN ISO 13732-1, EN ISO 13849-1, EN ISO 13857) the manufacturer shall carry out an adequate risk assessment for the requirements thereof, where choice is necessary. Pumps and pump units shall conform to EN 809. If fixed guards are used, their fixing systems shall remain attached to the guards or to the machinery when the guards are removed.
5.2 Requirements for high pressure water jet machine with intended exit of water under high pressure 5.2.1 Replacement inserts For pressure generators/pumps with replacement inserts, provisions shall be made to indicate the mounted status in a clearly visible position. 5.2.2 Safety devices against exceeding the pressure The machine shall have a safety device which prevents the maximum allowable working pressure from being exceeded by more than 15 % or in the case of machines with pulsation dampers by more than 10 %. It shall not be possible to switch off this safety device and it shall be designed and positioned in such a way that it cannot be made inoperative. The adjustment of the safety device shall be secured such that unauthorised changes are deterred by means such as a seal or tamperproof device. The water that escapes through a safety device shall be capable of being drained in a safe manner. This may be executed by the use of a by-pass-system or catch basin or compartment. Safety devices shall be designed and positioned in such a way that persons cannot be injured by escaping water or by broken pieces. 5.2.3 Pressure indicator The machine shall have a pressure indicator which directly displays the actual operating pressure of the liquid at the outlet of the pressure generator in megapascals (MPa) or bars (bar). The display shall be readily visible to an operator and the maximum allowable working pressure shall be marked. The pressure indicator shall be designed and positioned in such a way that, in case of leakage, persons cannot be injured by the escaping water or by broken pieces. 5.3 Mechanical requirements 5.3.1 Common requirements All parts of the pressure system shall be designed to withstand the maximum allowable working pressure specified by the manufacturer. The test pressure shall be related by a factor to the maximum allowable working pressure which is given in the manufacturer’s specification. In no case shall this factor be less than 1,3. 5.3.2 Spraying devices 5.3.2.1 Common requirements for spraying devices Spraying devices shall be able to withstand the impact and shock stresses which can be expected during normal operation without displaying any leakage or limitation of the intended function.
The activation mechanism shall be protected against unintended activation (e.g. by a guard). SIST EN 1829-1:2010
EN 1829-1:2010 (E) 13 5.3.2.2 Hand-held spraying devices
When the activation mechanism is released one of the following shall occur: a) No more liquid shall emerge from the nozzle (dry shut-off). b) Any liquid emerging from the spraying device shall generate a reaction force no greater than the weight of the spraying device. c) The pressure generator shall be switched off. The safety related parts of the control system shall present a performance level of at least "c", defined in accordance with EN ISO 13849-1. The release of the activation mechanism shall not be impaired or made impossible by recoil effects during shutting-off. The holding force that has to be exerted manually on the activation mechanism of the spraying device shall not exceed 60 N for the whole hand. The activation mechanism shall be lockable in the OFF-position. This can be achieved e.g. by a knob, hand lever or switch. There shall be no provision to lock the activation mechanism in the ON-position. The recoil forces exerted on the spraying device shall not exceed 250 N in the longitudinal direction. The reco
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