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1、BRITISH STANDARD BS EN 441-11:1995 Refrigerated display cabinets Part 11: Installation, maintenance and users guide The European Standard EN 441-11:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
2、EN 441-11:1995 This British Standard, having been prepared under the direction of the Engineering Sector Board (E/-), was published under the authority of the Standards Board and comes into effect on 15 March 1995 BSI 08-1999 The following BSI references relate to the work on this standard: Committe
3、e reference RHE/19 Draft for comment 91/82759 DC ISBN 0 580 23742 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee RHE/19, Commercial refrigerated food cabinets, cold rooms and display cases, upon which the following bod
4、ies were represented: British Refrigeration Association British Retail Consortium Co-operative Union Department of Health Ice Cream Federation Limited Institute of Refrigeration Institution of Environmental Health Officers Institution of Grocery Distribution London Refrigeration Society Ministry of
5、Agriculture, Fisheries and Food United Kingdom Association of Frozen Food Producers Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 441-11:1995 BSI 08-1999i Contents Page Committ
6、ees responsibleInside front cover National forewordii Foreword2 Text of EN 441-113 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 441-11:1995 ii BSI 08-1999 National foreword This British Standard has been prepared by Technical Commit
7、tee RHE/19 and is the English language version of EN 441-11:1994, Refrigerated display cabinets Part 11 Installation, maintenance and users guide, published by the European Committee for Standardization (CEN). EN 441-11 was produced as a result of international discussion in which the UK took an act
8、ive part. The Parts of BS 6148 together with BS 3053 will be withdrawn when the corresponding Parts of BS EN 441 are published. The International Standards which are equivalent to BS 6148 and BS 3053 remain in place as ISO 1992-1 to ISO 1992-8 and ISO 5160-1 and ISO 5160-2 until amended by ISO. A Br
9、itish Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a fr
10、ont cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 5 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffi
11、eldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 441-11 October 1994 ICS 97.040.30 Descriptors: Refrigerators, furniture, commerce, instructions, installation, maintenance English version Refrigerated display cabinets Part
12、 11: Installation, maintenance and users guide Meubles frigorifiques de vente Partie 11: Installation, entretien et guide de lutilisateur Verkaufskhlmbel Teil 11: Empfehlungen fr den Betreiber This European Standard was approved by CEN on 1994-10-14. CEN members are bound to comply with the CEN/CENE
13、LEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any C
14、EN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN
15、members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europ
16、isches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 441-11:1994 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 441-11:1994 BSI 08-1999 2 Foreword This Eu
17、ropean Standard was prepared by the Technical Committee CEN/TC 44, Household refrigerating appliances, 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 Apri
18、l 1995, and conflicting national standards shall be withdrawn at the latest by April 1995. This European Standard is part of a series: Part 1: Refrigerated display cabinets Terms and definitions; Part 2: Refrigerated display cabinets General mechanical and physical requirements; Part 3: Refrigerated
19、 display cabinets Linear dimensions, areas and volumes; Part 4: Refrigerated display cabinets General test conditions; Part 6: Refrigerated display cabinets Classification according to temperature; Part 7: Refrigerated display cabinets Defrosting test; Part 8: Refrigerated display cabinets Water vap
20、our condensation test; Part 9: Refrigerated display cabinets Electrical energy consumption test; Part 10: Refrigerated display cabinets Test for the absence of odour and taste; Part 11: Refrigerated display cabinets Installation, maintenance and users guide. According to the CEN/CENELEC Internal Reg
21、ulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Import
22、ant siting conditions3 3Installation of refrigerating equipment4 4Cabinet operation4 5Maintenance4 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 441-11:1994 BSI 08-19993 1 Scope 1.1 This standard specifies terminology, general mechanica
23、l and physical requirements, test conditions as well as installation, maintenance and users guide for refrigerated display cabinets for the sale and/or display of food products. This standard does not cover refrigerated vending machines or cabinets intended for use in catering or similar non-retail
24、applications. 1.2 This Part of EN 441 gives information concerning the installation and maintenance of refrigerated display cabinets and a guide to users. 2 Important siting conditions 2.1 Climate In order to keep the ambient climate at the place of installation within agreed limits it may be necess
25、ary to install air conditioning. Such an installation should include control of the relative humidity, as excessive humidity is detrimental to cabinet performance. It can be more economical to dehumidify the air by air conditioning than through cabinet evaporators operating at lower temperatures as
26、the latter is not energy efficient. The grouping of cabinets in a defined area will be advantageous in terms of performance and operating costs, it may also, however, cause customer discomfort. 2.2 Air draughts The location of the cabinets should be such that air draughts are minimized or avoided. C
27、abinets should not be installed adjacent to doors or in areas where exposure to considerable air movement will be experienced e.g. from air conditioning, ventilation and heating outlets. The design of ventilating equipment should consider the air speed across the cabinets. Special attention should b
28、e afforded to air heating outlets. 2.3 Heat radiation and lighting To reduce to a minimum the ill effects of radiant heat, care should be exercised to ensure cabinets are not exposed to the sun, air diffusers and ducts, sun heated non-insulated roofs or walls, or other heat sources. Radiated heat en
29、tering the cabinet will increase operating costs and reduce performance. Spotlights or other concentrated lighting units should not be aimed into the cabinets. External fluorescent lighting is preferred to incandescent and it is strongly recommended that only the former type be used. In the event of
30、 incandescent type lighting being used, the light fittings should be adequately ventilated by the use of suitably dimensioned ventilating slots. Surfaces at ambient temperature radiate an appreciable amount of heat, which can impair performance. The use of heat reflecting ceilings or arranging cabin
31、ets to face each other will minimize this effect. 2.4 Condensation Water vapour will condense on a cool surface if the dew point of the air is higher than the surface temperature. Regardless of how well a cabinet is insulated, condensation will take place if there is no ventilation around the cabine
32、t. Therefore, unless specified differently by the manufacturer, do not place the cabinet closer than 100 mm to walls or any other objects that will prevent sufficient airflow around the case. 2.5 Cabinet with integral condensing unit The purchaser should locate the cabinet in accordance with the ins
33、tructions of the manufacturer, ensuring that a sufficient supply of air can enter and leave the condenser. The cabinet should be located so as to be free of excessive vibration. 2.6 Mechanical protection The operator should arrange adequate protection of the cabinets against damage caused by shoppin
34、g trolleys, cleaning machines, fork lift vehicles, etc. 2.7 Electrical installation The electrical installation should meet existing regulations and safety codes. The electrical supply to the cabinets should be independent of other supplies and individually isolated. Cabinet lighting and the operati
35、on of motorized night blinds should be individually protected within the electrical circuit of the cabinet. The manufacturers recommendation on voltage, frequency and protective devices rating should be adhered to. 2.8 Drain installation The cabinet should be correctly levelled and the drain proved.
36、 A drain pipe of adequate dimension should be installed with sufficient slope away from the cabinet to ensure drainage. A water trap of adequate dimension should be installed in the drain pipe. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
37、 EN 441-11:1994 4 BSI 08-1999 3 Installation of refrigerating equipment 3.1 Location The area in which the refrigerating equipment is located should be as close as possible to the cabinets in order that connecting pipework may be kept to the minimum length. Vibration from compressors or fan motors s
38、hould be minimized when locations are being considered. The machinery room should not be used for storage and should always be readily accessible for maintenance and service. 3.2 Ventilation An adequately ventilated area, preferably a separate room, should be provided for remotely installed refriger
39、ating equipment. Sufficient ventilation of the refrigerating equipment should be provided in order to remove the heat generated. Basically there are three categories of installation: a) air cooled condensing unit; b) air cooled compressor with air cooled condenser installed remotely, for example upo
40、n the roof; c) water cooled condensing unit. NOTEThe greatest quantity of heat is emitted from the condenser, however, compressors and their motors produce heat which should be dissipated through adequate ventilation even when the condensers are remote or water cooled. Cabinet malfunction is often a
41、ttributable to the inadequacy of ventilation of refrigerating equipment. 3.3 Temperature The correct functioning of a refrigerating system is very dependent upon the design being suitable for the climatic variations which exist between winter and summer. It is important that user and seller agree th
42、e operating conditions that the refrigerating system is designed to fulfil. Upper and lower limits should be agreed for the ventilation of the refrigerating equipment. Where a water cooled condensing unit is used an adequate supply of good quality water at an acceptable temperature is essential. 4 C
43、abinet operation 4.1 Loading The cabinet is marked with a load limit line. Food products stored within the load limit are properly refrigerated. Food products stored outside the load limit are not properly refrigerated, and cause a disturbance of the airflow with the result that cabinet performance
44、is jeopardized and all food products are damaged. A refrigerated display cabinet is not designed to cool down perishable food products but to maintain the temperature at which they are introduced into the cabinet. Food products warmer than the specified cabinet temperature should not be placed into
45、a refrigerated cabinet. Do not leave refrigerated food products on pallets or similar in the shop longer than absolutely necessary for handling and loading. Do not overload the cabinet: It is the most common of all faults and can cause secondary faults, eventually blocked evaporator and complete bre
46、akdown. 4.2 Fittings and accessories Use only fittings and accessories supplied with the cabinet. “Do it yourself” additions may cause condensation leading to ice build up in the cabinet or can disturb the designed airflow causing malfunction (e.g. large paper signs used within the cabinet). 4.3 Sto
47、ck rotation It is important to inform the shop staff that food products should be rotated when new food products are loaded into the cabinet so that the oldest food product is the one closest to the customer and sold first. 4.4 Night-covers Night-covers will improve food product temperature and redu
48、ce running cost if used as recommended by the manufacturer. NOTEThe same applies to solid metal product dividers that conduct heat away from the top layer of food products. 5 Maintenance 5.1 Cleaning It is essential to empty and clean the cabinet regularly. The cabinet should be disconnected from th
49、e mains supply, emptied and thoroughly cleaned according to the manufacturers instruction. For certain cabinets hygiene requirements or other reasons may necessitate more frequent cleaning practice. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:36:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 441-11:1994 BSI 08-19995 A blocked drain inside the cabinet causes a breakdown and possible damage to other parts of the cabinet. If the cabinet is supplied with a drain sump this should be emptied and cleane
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