SIST EN 1114-3:2001+A1:2008
(Main)Plastics and rubber machines - Extruders and extrusion lines - Part 3: Safety requirements for haul-offs
Plastics and rubber machines - Extruders and extrusion lines - Part 3: Safety requirements for haul-offs
This European Standard contains the safety requirements for the design and construction of haul-offs used in extrusion lines for processing plastics and rubber for the hazards identified in clause 4. The following kinds of haul-offs are covered:
- caterpillar haul-offs;
- belt haul-offs;
- capstan haul-offs;
- belt capstan haul-offs;
- roller haul-offs.
The machine begins at the material inlet opening and ends at the material outlet.
Cutting units which are integrated with or attached to the haul-off are not covered.
Take-off devices used at film or sheet lines are not covered.
Chemical, toxicological and fire hazards which could occur for example in continuous vulcanisation plants due to the materials processed are not dealt with.
Unwinding and winding machines are not subject to this standard. They are being dealt with in a separate standard being produced by another working group of CEN/TC 145.
This document is not applicable to haul-offs which are manufactured before the date of publication by CEN of this document.
Kunststoff- und Gummimaschinen - Extruder und Extrusionsanlagen - Teil 3: Sicherheitsanforderungen für Abzüge
Diese Europäische Norm enthält die Sicherheitsanforderungen bezüglich der in Abschnitt 4 identifizierten Gefährdungen für Konzipierung und Bau von Abzügen, die in Extrusionsanlagen für die Verarbeitung von Kunststoffen und Kautschuk eingesetzt werden. Die folgenden Arten von Abzügen sind behandelt:
- Raupenabzüge;
- Bandabzüge;
- Scheibenabzüge;
- Band Scheibenabzüge;
- Rollenabzüge.
Die Maschine beginnt an der Materialeintrittsöffnung und endet an der Materialaustrittsstelle.
Schneideinrichtungen, die im Abzug integriert oder mit ihm verbunden sind, sind nicht behandelt.
Abzugseinrichtungen, die in Anlagen für Folien oder Platten verwendet werden, sind nicht behandelt.
Chemische, toxikologische Gefährdungen und Gefährdungen durch Feuer, die in z. B. kontinuierlichen Vulkanisieranlagen durch die zu verarbeitenden Materialien auftreten könnten, sind nicht behandelt.
Abwickler und Aufwickler sind in dieser Norm nicht behandelt. Sie werden in einer separaten Norm behandelt, die von einer anderen Arbeitsgruppe des CEN/TC 145 erarbeitet wird.
Dieses Dokument gilt nicht für Abzüge, die hergestellt wurden, bevor CEN dieses Dokument veröffentlichte.
Machines pour les matières plastiques et le caoutchouc - Extrudeuses et lignes d'extrusion - Partie 3: Prescriptions de sécurité pour les extracteurs
La présente Norme européenne définit les prescriptions de sécurité correspondant aux phénomènes dangereux énumérés à l'article 4 pour la conception et la construction des extracteurs utilisés dans les lignes d'extrusion pour la transformation du caoutchouc et des matières plastiques. Les types d’extracteurs suivants sont couverts :
extracteurs à chenilles ;
extracteurs à courroies ;
extracteurs à cabestan ;
extracteurs à cabestan et à courroie ;
extracteurs à rouleaux.
La machine commence à l'ouverture d'entrée du matériau et finit à la sortie du matériau.
Les dispositifs de coupe qui sont intégrés ou fixés à l'extracteur ne sont pas couverts.
Les dispositifs d’évacuation utilisés dans les lignes de production de films ou de feuilles ne sont pas couverts.
Les phénomènes dangereux chimiques, toxiques et d'incendie, par exemple ceux dus au matériau transformé qui pourraient se produire dans les unités de vulcanisation en continu, ne sont pas traités.
Les dérouleurs et enrouleurs ne sont pas couverts par la présente norme. Ils sont traités dans une norme distincte élaborée par un autre groupe de travail du CEN/TC 145.
Le présent document ne s'applique pas aux extracteurs fabriqués avant sa date de publication par le CEN.
Stroji za predelavo gume in plastike - Ekstruderji in oprema za iztiskavanje - 3. del: Varnostne zahteve za naprave/stroje za vlečenje
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoff- und Gummimaschinen - Extruder und Extrusionsanlagen - Teil 3: Sicherheitsanforderungen für AbzügeMachines pour les matières plastiques et le caoutchouc - Extrudeuses et lignes d'extrusion - Partie 3: Prescriptions de sécurité pour les extracteursPlastics and rubber machines - Extruders and extrusion lines - Part 3: Safety requirements for haul-offs83.200Oprema za gumarsko industrijo in industrijo polimernih materialovEquipment for the rubber and plastics industriesICS:Ta slovenski standard je istoveten z:EN 1114-3:2001+A1:2008SIST EN 1114-3:2001+A1:2008en01-december-2008SIST EN 1114-3:2001+A1:2008SLOVENSKI
STANDARD
SIST EN 1114-3:2001+A1:2008
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1114-3:2001+A1
October 2008 ICS 83.200 Supersedes EN 1114-3:2001English Version
Plastics and rubber machines - Extruders and extrusion lines - Part 3: Safety requirements for haul-offs
Machines pour les matières plastiques et le caoutchouc - Extrudeuses et lignes d'extrusion - Partie 3: Prescriptions de sécurité pour les extracteurs
Kunststoff- und Gummimaschinen - Extruder und Extrusionsanlagen - Teil 3: Sicherheitsanforderungen für Abzüge This European Standard was approved by CEN on 28 December 2000 and includes Amendment 1 approved by CEN on 15 June 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
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1114-3:2001+A1:2008: ESIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.4 2 Normative references.5 3 Terms and definitions.6 4 List of significant hazards.7 4.1 Mechanical Hazards.7 4.2 Hazards due to electrical energy.13 4.3 Hazards due to hydraulic and pneumatic equipment.14 4.4 Hazards due to failure of safety related parts of control systems.14 4.5 Thermal hazards.14 4.6 Hazards due to noise.14 4.7 Hazards due to instability.14 5 Safety requirements and/or protective measures.14 5.1 Mechanical hazards.14 5.1.1 General.14 5.1.2 Feeding zone.14 5.1.3 Conveying zone.15 5.1.4 Drive and power transmission zone.15 5.1.5 Discharge zone.16 5.1.6 Start up and machine setting operations in the danger zones.16 5.1.7 Wheels for machinery movement for changes of location.17 5.1.8 Falling/uncontrolled descent due to gravity.17 5.2 Hazards due to electrical energy.17 5.2.1 Electrical shock or burns caused by direct or indirect contact with live parts.17 5.2.2 Hazards due to electrostatic discharge.19 5.3 Hazards due to hydraulic and pneumatic equipment.19 5.4 Hazards due to failure of safety related parts of control systems.19 5.5 Thermal hazards.20 5.6 Hazards due to noise.20 5.6.1 Noise reduction at source by design.20 5.6.2 Determination of noise emission values.20 5.6.3 Declaration of noise emission values.21 5.7 Hazards due to instability.21 6 Verification of the safety requirements and/or protective measures.21 7 Information for use.23 7.1 Minimum marking on the machine.23 7.2 Instruction manual.23 Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC".25 Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC".26 Bibliography.27
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 3 Foreword This European Standard (EN 1114-3:2001+A1:2008) has been prepared by Technical Committee CEN/TC 145 "Plastics and rubber machines", the secretariat of which is held by UNI. 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 April 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, approved by CEN on 2008-06-15. !The main changes compared to the previous version are: modification of the main element of the title; editorial modification of Annex ZA; addition of Annex ZB; editorial changes of EN 292-1:1991 to EN ISO 12100-1:2003 and of EN 292-2:1991/A1:1995 to
EN ISO 12100-2:2003 in the following clauses/sub-clauses: 2, 5, 5.1.1, 5.1.6, 5.5, 5.6.2, Table 2, 7.1, 7.2; minor changes in the Foreword and in sub-clauses 5.6.2 and 7.1, second and third indents." This document supersedes EN 1114-3:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". 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 is the third in a series of standards on the safety of extruders and extrusion lines. Part 1 deals with extruders. Part 2 deals with die face pelletisers. 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.
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 4 Introduction This document 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 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. 1 Scope This European Standard contains the safety requirements for the design and construction of haul-offs used in extrusion lines for processing plastics and rubber for the hazards identified in clause 4. The following kinds of haul-offs are covered: caterpillar haul-offs; belt haul-offs; capstan haul-offs; belt capstan haul-offs; roller haul-offs. The machine begins at the material inlet opening and ends at the material outlet. Cutting units which are integrated with or attached to the haul-off are not covered. Take-off devices used at film or sheet lines are not covered. Chemical, toxicological and fire hazards which could occur for example in continuous vulcanisation plants due to the materials processed are not dealt with. Unwinding and winding machines are not subject to this standard. They are being dealt with in a separate standard being produced by another working group of CEN/TC 145. This document is not applicable to haul-offs which are manufactured before the date of publication by CEN of this document. SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 5 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 these publications apply to this European standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). !deleted text" EN 294:1992, Safety of Machinery - Safety distances to prevent danger zones being reached by the upper limbs. EN 418:1992, Safety of Machinery - Emergency stop equipment, functional aspects - Principles for design. EN 563:1994, Safety of Machinery - Temperatures of touchable surfaces - Ergonomic data to establish temperature limit values for hot surfaces. EN 574:1996, Safety of machinery - Two-hand control devices - Functional aspects - Principles for design. EN 811:1996, Safety of Machinery - Safety distances to prevent danger zones being reached by the lower limbs. EN 953:1997, Safety of Machinery - Guards - General requirements for the design and construction of fixed and movable guards. EN 954-1:1996, Safety of Machinery - Safety related parts of control systems - Part 1: General principles for design. EN 982:1996, Safety requirements for fluid power systems and components – hydraulics. EN 983:1996, Safety requirements for fluid power systems and components – pneumatics. EN 999:1998, Safety of machinery - The positioning of protective equipment in respect of approach speeds of parts of the human body. EN 1037:1995, Safety of machinery - Prevention of unexpected start-up. EN 1070, Safety of machinery – Terminology. EN 1088:1995, Safety of Machinery - Interlocking devices associated with guards - Principles for design and selection. prEN 1760-2:1996, Safety of machinery - Pressure sensitive protective devices - Part 2: General principles for the design and testing of pressure sensitive edges and pressure sensitive bars. EN 60204-1:1997, Safety of Machinery - Electrical equipment of machines - Part 1: General requirements (IEC 60204-1:1997). EN 60529:1991, Degrees of protection provided by enclosures (IP-Code) (IEC:1989). EN ISO 3744:1995, 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 4871:1996, Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996). SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 6 EN ISO 9614, Acoustics - Determination of sound power levels of noise sources using sound intensity. EN ISO 11201:1995, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at the work station and at other specified positions - Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995). EN ISO 11204:1995, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at the work station and at other specified positions - Method requiring environmental corrections (ISO 11204:1995). EN ISO 11688-1:1998, Acoustics - Recommended practice for the design of low-noise machinery and equipment; Part 1: Planning (ISO/TR 11688-1:1995). !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)" 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1070 and the following terms and definitions apply: 3.1 haul-off a powered device used in extrusion lines to continuously haul off products such as cable, cable core, profiles, pipes or tape. lt operates by pulling the product by means of friction between the product and the moving gripping elements.
3.2 caterpillar haul-off a device comprising two or more sets of linked elements equipped with gripping segments or lugs; one or more are driven. Grip is achieved when the elements are closed together by pressing the product between them (see figure 1).
3.3 belt haul-off a device comprising two counter-rotating belts set in line one above the other; one or both is driven. Grip is achieved when the belts are closed together by pressing the product between both belts (see figure 2).
3.4 capstan haul-off a device comprising one or more drums or wheels at least one of which is driven. Grip is achieved by the tension of the product, e.g. cables, flexible hoses, wrapped one or more times around the drum(s) or wheel(s) (see figure 3).
3.5 belt capstan haul-off a device comprising a wheel and a belt which covers at least partially the circumference of the wheel. The wheel, the belt or both are driven. Grip is achieved by pressing the product between the belt and the wheel (see figure 4).
3.6 roller haul-off a device comprising one or more sets of counter-rotating rolls set in line one above the other; one roller or both of each set is driven. Grip is achieved by pressing the product between the rollers (see figure 5). SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 7
4 List of significant hazards 4.1 Mechanical Hazards Mechanical Hazards are: a
crushing b
cutting and severing c
shearing d
drawing in or trapping e
falling/uncontrolled descent due to gravity
These hazards are principally due to: the rotating parts of the drive and power transmission systems (a,b,c,d); the rotating drive rollers or wheel(s) or drum(s) with or without product (a, b, c, d); the moving parts of the conveying elements, such as caterpillars, belts, pressure rollers, return rollers, etc. with or without product (a,b,c,d,); the moving parts of the conveying element mountings during opening and closing (a, e); movement of the product through feed openings in guards (a,d); movement of the machine for changes of location (a).
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 8 Table 1 — Cross references of the mechanical hazards to the danger zones Danger zone Cause of the hazard(s) Hazards1)
a b c d e Feeding zone rotating drive rollers or wheel(s) or drum(s) with or without product x x x x
moving parts of the conveying elements, such as caterpillars, belts, back-up roller, deflection rollers, etc. with or without product x x x x
moving parts of the conveying element mountings during opening and closing x
x
movement of the product through feed openings in guards x
x
Conveying zone rotating drive rollers or wheel(s) or drum(s) with or without product x x x x
moving parts of the conveying elements, such as caterpillars, belts, pressure rollers, return rollers, etc. with or without product x x x x
moving parts of the conveying element mountings during opening and closing x
x Drive and power trans-mission zone rotating parts of the drive and power transmission systems x x x x
Discharge Zone rotating drive rollers or wheel(s) or drum(s) with or without product x x x x
moving parts of the conveying elements, such as caterpillars, belts, pressure rollers, return rollers, etc. with or without product x x x x
moving parts of the conveying element mountings during opening and closing x
x Movement of the wheels movement of the machine for changes of location x
Figures 1 to 5 show examples of haul-offs with danger zones
1) a = crushing hazards, b = cutting and severing hazards, c = shearing hazards, d = drawing in or trapping hazards, e = falling/uncontrolled descent due to gravity. SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 9 I Feeding zone II Conveying zone III Drive and power transmission zone IV Discharge zone V Movement of the wheels
Safety devices are not shown
Figure 1 — Example of the danger zones on a caterpillar haul-off
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 10 I Feeding zone II Conveying zone III Drive and power transmission zone IV Discharge zone V Movement of the wheels
Safety devices are not shown Figure 2 — Example of the danger zones on a belt haul-off
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 11 I Feeding zone II Conveying zone III Drive and power transmission zone IV Discharge zone V Movement of the wheels
Safety devices are not shown Figure 3 — Example of the danger zones on a capstan haul-off
SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 12 I Feeding zone II Conveying zone III Drive and power transmission zone IV Discharge zone V Movement of the wheels
Front view
Safety devices are not shown Rear view Figure 4 — Example of the danger zones on a belt capstan haul-off SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 13 I Feeding zone II Conveying zone III Drive and power transmission zone IV Discharge zone V Movement of the wheels
Safety devices are not shown Figure 5 — Example of the danger zones on a roller haul-off 4.2 Hazards due to electrical energy Electric shock or burns due for example to direct contact with parts that are live or with parts that have become live through electrical fault. Electric shock due to water carried over from upstream product cooling. Electric shock due to electrostatic phenomena. SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 14 4.3 Hazards due to hydraulic and pneumatic equipment If hydraulic or pneumatic energy is used hazards can occur due to: release of fluids under pressure from hydraulic systems or of compressed air from pneumatic components; whiplash of pipelines in case of pipe breakage. 4.4 Hazards due to failure of safety related parts of control systems Hazards due to uncontrolled dangerous movements or unexpected start-up can occur following failure of components of the measuring, regulating and control circuitry. 4.5 Thermal hazards Burns can occur due to contact with hot machine parts or hot extrusion products. 4.6 Hazards due to noise Hazards caused by high noise levels can lead to: hearing impairment; interference with speech communication; interference with the perception of acoustic signals. 4.7 Hazards due to instability Overturning or unexpected movement of the haul-off due to the force transferred by the product to the machine. 5 Safety requirements and/or protective measures Machinery shall comply with the safety requirements and/or protective measures of this clause. In addition, the machine shall be designed according to the principles of !EN ISO 12100" for hazards relevant but not significant, which are not dealt with by this document (e. g. sharp edges). 5.1 Mechanical hazards 5.1.1 General Machines shall be designed and constructed such that there is no access to danger zones. When this is not possible, access to danger zones shall be prevented by safeguards in accordance with !Clause 4 of
EN ISO 12100-2:2003." 5.1.2 Feeding zone Access to danger zones shall be protected by: distance guards in accordance with 3.2.2 of EN 953:1997; SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 15 in the form of protective structures preventing access to the danger zone, for safety distances tables 2, 3 and/or 4 of EN 294:1992 shall apply; or in the form of a tunnel extending from the machine inlet along the product line; for safety distances tables 3 and/or 4 of EN 294:1992 shall apply. The gap between the moving extrusion product and fixed parts of the guard shall be such as to avoid the creation of additional hazards. or interlocking guards in accordance with 3.5 of EN 953:1997 or interlocking guards with guard locking in accordance with 3.6 of EN 953:1997, taking into account the selection criteria of EN 1088:1995 and the approach speed criteria in accordance with EN 999:1998. The guards shall be interlocked with the drive. For safety distances tables 2, 3 and/or 4 of EN 294:1992 shall apply. or trip devices, e.g. pressure sensitive edges in accordance with prEN 1760-2:1996 or active opto-electronic protective devices the positioning of which shall take into account the approach speed criteria in accordance with EN 999:1998. The trip device shall be interlocked with the drive. or if these solutions cannot be applied for technical reasons adjustable guards in accordance with 3.4 of EN 953:1997. The gap between the extrusion product and the guard shall be less than 4 mm. It shall be stated in the instruction manual, that the guard shall be kept so adjusted (see 7.2 b)). If the gap between a particular product type being hauled off and the guard must be larger than 4 mm due to diameter variation of that product at any phase during hauling off the machine must be fitted with a label indicating the hazard (see 7.1 a)). 5.1.3 Conveying zone Access to danger zones shall be protected by: fixed guards in accordance with 3.2 of EN 953:1997; for safety distances tables 2, 3 and/or 4 of
EN 294:1992 shall apply; and/or interlocking guards in accordance with 3.5 of EN 953:1997 or interlocking guards with guard locking in accordance with 3.6 of EN 953:1997, taking into account the selection criteria of EN 1088:1995 and the approach speed criteria in accordance with EN 999:1998. The guards shall be interlocked with the drive. For safety distances tables 2, 3 and/or 4 of EN 294:1992 shall apply. 5.1.4 Drive and power transmission zone Access to danger zones shall be protected by: fixed guards in accordance with 3.2 of EN 953:1997; for safety distances tables 2, 3 and/or 4 of
EN 294:1992 shall apply. SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 16 5.1.5 Discharge zone Access to danger zones shall be protected by: fixed guards in accordance with 3.2 of EN 953:1997; for safety distances tables 2, 3 and/or 4 of
EN 294:1992 shall apply; and/or interlocking guards in accordance with 3.5 of EN 953:1997 or interlocking guards with guard locking in accordance with 3.6 of EN 953:1997, taking into account the selection criteria of EN 1088:1995 and the approach speed criteria in accordance with EN 999:1998. The guards shall be interlocked with the drive. For safety distances tables 2, 3 and/or 4 of EN 294:1992 shall apply. 5.1.6 Start up and machine setting operations in the danger zones Access to any dangerous movements in the danger zones for start-up and machine setting operations shall be prevented by designing the haul-off to allow these operations to be undertaken with the machine stationary
e. g. feeding at start-up where the extrusion product can be drawn through by hand. Instructions for this shall be stated in the instruction manual (see 7.2 g)). When these operations can only be undertaken with the haul-off running then access to any dangerous movements in the danger zones shall be prevented by: use of safe feeding device, e. g. using a special start-up product fed through the haul-off and connected with the upstream extrusion product of the haul-off at standstill; and/or other procedures, e.g. by leaving the extrusion product in the haul-off when stopping the haul-off; or use of a procedure, e. g. by using a selector switch in combination with for example a two hand control device in accordance with EN 574:1996, type III B or; !a sensitive protective equipment (trip device) in accordance with EN ISO 12100-1:2003, 3.26.5". If these solutions cannot be applied for technical reasons and if close approach to the danger zone is required, then either: movements of the conveying elements shall be activated and controlled by a hold-to-run control device in accordance with !3.26.3 of EN ISO 12100-1:2003" such that: the maximum circumferential speed in this mode is 200 mm/s for the moving parts of the conveying elements and 50 mm/s for the conveying element mountings during opening and closing; and the control device is activated by a selector switch that makes any remote control panels inoperative. If the selector switch is located outside the reach of the operator when touching the hold-to-run control device, a key mode selector switch shall be used. or SIST EN 1114-3:2001+A1:2008
EN 1114-3:2001+A1:2008 (E) 17 the conveying elements of the haul-off shall be controlled in synchronization with other machines on the production line with the following conditions: a key mode selector switch shall be used, which shall be in the start-up or setting positions for the production line; and the circumferential speed shall be limited to a maximum of 200 mm/s for the conveying elements and 50 mm/s for the conveying element mountings during opening and closing; and a warning beacon on the haul-off must be activated as long as the selector switch is in the start-up or setting positions for the production line; and when turning the selector switch to the production position the access to the danger zones of the haul-off shall be prevented. See also 7.2 e). 5.1.7 Wheels for machinery movement for changes of location To prevent crushing of the feet in the case of power operated movement of the machine for changes of location, the carriage wheels shall be provided with enclosing guards in accordance with 3.2.1 of
EN 953:1997. This shall take account of the maximum safety distance of 15 mm specified in EN 811:1996 table 1. See also 7.2 h). 5.1.8 Falling/uncontrolled descent due to gravity In case of failure o
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