1、May 1999DEUTSCHE NORM English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 67.020; 97.040.40!$O1B“
2、1441431www.din.deDDIN 10511Food hygiene Commercial glasswashing with glasswashing machines Hygiene requirements, testingLebensmittelhygiene Gewerbliches Glsersplen mit Glsersplmaschinen Hygienische Anforderungen, Prfungwww.beuth.deIn case of doubt, the German-language original should be consulted as
3、 the authoritative text.Translation by DIN-Sprachendienst.Document comprises 27 pagesDIN 10511:1999-05 2 Contents Page Foreword3 1 Scope 3 2 Normative references 3 3 Terms and definitions .4 4 Designation 6 5 Requirements.6 5.1 Requirements relating to construction materials.6 5.2 Requirements relat
4、ing to technical and functional features.6 5.3 Process requirements .7 6 Requirements relating to detergents and rinse agents .8 6.1 General8 6.2 Detergents/cleaning agents8 6.3 Rinse agents.9 6.4 Dosage 9 7 Requirements relating to the glasses9 7.1 General9 7.2 Recommendations relating to the shape
5、 and surface of the glasses9 8 Installation- and instruction handbook .9 9 Marking 10 Annex A (normative) Recommendations on the installation and operation of glass washing machines . 11 Annex B (normative) Recommendations on treatment agents . 12 Annex C (normative) Testing 13 Annex D (normative) C
6、omposition and preparation of DGWM, RGWM and the inactivation and buffer solution. 26 DIN 10511:1999-05 3 Foreword This standard has been prepared by Working Group Hygienische Anforderungen an das gewerbliche Geschirrsplen of the Normenausschuss Lebensmittel und landwirtschaftliche Produkte (Food an
7、d Agricultural Products Standards Committee). 1 Scope This standard specifies hygiene requirements relating to the design, construction and operation of commercial glasswashing machinery and in particular provides the user with information on hygienic and proper operation, on decontamination of glas
8、ses and on care and maintenance of the machinery. It describes the procedures of type testing, daily routine inspections and process inspections in practical use. 2 Normative references This standard incorporates, by dated or undated reference, provisions from other publications. These normative ref
9、erences are cited at the appropriate places in the text and the publications are listed below. In the case of dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. In the case of undated refe
10、rences, the last edition of the referenced publication shall apply. DIN 10503, Food hygiene Terminology DIN 10510:1996-09, Food hygiene Commercial dishwashing with multitank transport dishwashers Hygiene requirements, procedure testing DIN 10514, Food hygiene Hygiene training DIN 10960, Apparatus fo
11、r sensory analysis Wine testing glasses DIN 12331, Laboratory glassware Beakers 1 Verordnung ber Trinkwasser und ber Wasser fr Lebensmittelbetriebe (Trinkwasserverordnung TrinkwV) (German Drinking Water Ordinance) as of 5 December 1990, BGBI. (German Federal Law Gazette) I, 1990, No. 66, pp. 2613262
12、91)2 Verordnung ber Lebensmittelhygiene und zur nderung der Lebensmitteltransportbehlter-Verordnung (LMVH) (German regulation on food hygiene and amendment of the German food transport container regulation) as of 5 August 1997, BGBl. (German Federal Law Gazette) I, 1997, No. 56, pp. 200820151)3 Gese
13、tz ber die Umweltvertrglichkeit von Wasch- und Reinigungsmitteln (Wasch- und Reinigungs-mittelgesetz) (German Washing and Cleansing Agents Act) as of 5 March 1987, BGBI. (German Federal Law Gazette) I, 1987, No. 20, pp. 8758791)1)Obtainable from Deutsches Informationszentrum fr technische Regeln (DI
14、TR) in DIN, 10772 Berlin (office address: Burggrafenstrasse 6, 10787 Berlin). DIN 10511:1999-05 4 3 Terms and definitions For the purposes of this standard, the terms and definitions in DIN 10503 and the following apply: 3.1 glasses drinking vessels made of glass as normally used in the catering tra
15、de 3.2 glasswashing machine (GWM) for the purposes of this standard, a machine commercially used for washing glasses, this machine having a spray mechanism, a reservoir tank in which the detergent solution is collected and a final hot fresh-water rinsing system. The glasses are cleaned by the action
16、 of the detergent solution circulating in the glasswasher. The cleaning process is followed by a rinsing cycle using a rinse agent solution. The in-flowing rinse agent solution also regenerates the cleaning solution 3.3 treatment agents for glasswashing machines agents (products) which serve to clea
17、n, disinfect, rinse and descale glasses being cleaned in a glasswashing machine 3.3.1 cleaning agent/detergent for glasswashing machines agent (product) which serves to remove contaminants from the surface of glasses and which counteracts recontamination of the glasses by material in the detergent s
18、olution 3.3.2 rinse agent for glasswashing machines agent (product) which lowers the surface tension of the water and promotes optimum wetting of the glasses which have been cleaned, thus improving drying performance (creation of a rinsing water film). Also referred to as rinse aid 3.3.3 descaling a
19、gent for glasswashing machines product based on various acids and/or acid salts and which is used to remove lime-scale and/or mixed lime and/or calcium phosphate and magnesium phosphate deposits in the glasswashing machine 3.3.4 disinfection component for glasswashing machines agent (product) either
20、 already contained in the glasswashing machine cleaning agent (detergent), or added to this in order to achieve a disinfecting effect 3.4 Solutions and films of treatment agents 3.4.1 cleaning agent/detergent solution for glasswashing machines water used in the glasswashing machine and to which a ce
21、rtain amount of cleaning agent/detergent has been added 3.4.2 rinse agent solution for glasswashing machines heated fresh water used in the glasswashing machine and to which a certain amount of rinse agent has been added DIN 10511:1999-05 5 3.4.3 rinse agent film fine, unbroken film of water on the
22、surface of the glasses which enables fast drying without leaving spots or streaks 3.5 Water quality 3.5.1 fresh water untreated, softened, partially softened or fully de-ionized water taken from the drinking water supply. The 3.5.2 processed water water which has been subjected to a process to modif
23、y its ingredients. A distinction is made between processes for softening the water and processes for reducing the overall salt content 3.5.3 softened water water from which the hardness ions/minerals have been removed by cation exchange processes in a water softening plant without reducing the overa
24、ll salt content. The precipitation of water-insoluble salts is prevented 3.5.4 demineralized water water from which the entire salt content has been removed by ion exchange processes 3.6 contact time period for which the glasses are in contact with the detergent solution 3.7 programme cycle washing
25、process which starts with cleaning and ends after fresh-water rinsing 3.8 cleaning system of glasswashing machine entire cleaning apparatus comprising connecting pipes, jets, nozzles and spray pipes. A distinction is made between rigid and moving systems 3.8.1 detergent circulation process during wh
26、ich the detergent solution, which is kept heated to the nominal temperature, is sprayed onto the surface of the glasses by means of a pump unit in order to clean the glasses by removing contamination 3.8.2 fresh-water rinsing final rinsing process before drying, with the aim of wetting the glasses w
27、ith a rinse agent solution and removing any remaining contamination and detergent residues 3.9 interior of glasswashing machine space encompassing all parts of the glasswashing machine which come into contact with the detergent and rinse agent and/or the glasses as intended water can normally be pro
28、cessed by ion exchange or reverse osmosis processes DIN 10510:1996-09 DIN 10511:1999-05 6 3.10 exterior of glasswashing machine space encompassing all parts of the glasswashing machine which do not come into contact with the detergent and rinse agent (e.g. pedestals, adjustable feet, handles, casing
29、) but which are accessible from outside 3.11 pre-cleaning emptying of the glasses and removal of major residue etc. before placing the glasses in the glasswasher racks 3.12 decontamination cleaning and disinfecting of glasses 3.13 recontamination undesirable re-soiling of glasses between the end of
30、the rinsing process and further use of the glasses, and which impairs the washing results 4 Designation Glasswashing machines (German GLSM) which conform to the hygiene requirements (H) of this standard are given the designation: GLSM DIN 10511 H 5 Requirements 5.1 Requirements relating to construct
31、ion materials In terms of hygiene, the materials used in the design and construction of glasswashers shall be both serviceable, ageing resistant and corrosion resistant under normal conditions of use, these conditions being: on the interior: contact with beverage remnants, detergent solutions, disin
32、fectant solutions, rinse agent solutions, descaling agent solution; on the exterior: contact with water, cleaning agents, disinfectants, cleaning and care products. 5.2 Requirements relating to technical and functional features It shall be possible to place the glasses easily into the baskets in the
33、 intended optimum position. For this purpose, the shape and size of the glasses and the baskets shall be suited to one another. The washing mechanism shall be designed in such a way that the glasses are fully and adequately wetted and contacted by detergent solution, so that an adequate cleaning eff
34、ect is achieved. The final freshwater rinsing mechanism shall be large and powerful enough to fully contact and wet the glasses. A sufficient amount of rinse agent shall be used. During the rinse process, the rinse agent solution shall access all parts of the glasses in order to rinse off residue de
35、tergent solution fully and allow the formation of a rinse agent film. A sufficient amount of rinsing water shall be used since this also serves to regenerate the detergent solution. The interior of the glasswashing machine shall be easily accessible for cleaning, disinfection and maintenance purpose
36、s. DIN 10511:1999-05 7 The heating elements shall be large enough to ensure that adequate energy is permanently available during operation to keep the temperature of the detergent solution and the rinse agent solution constant. All parts which have to be removed from the machine for cleaning (e.g. s
37、ieves and parts of the rinsing mechanism) shall be easily accessible and easy to clean. It shall be possible to return them easily to their correct position. 5.3 Process requirements 5.3.1 General Decontamination, the cleanliness resulting from this and the hygienically safe condition of the glasses
38、 are determined by interaction of the following main factors: type and shape of the glasses and the glasswasher racks and baskets; length of time for which the beverage remains have been allowed to dry on the glasses; type and amount of beverage remains; manual pre-cleaning; temperature; contact tim
39、e; mechanics; water quality and water volume; type and concentration of the treatment agents; final freshwater rinsing; drying. 5.3.2 Hygiene requirements Glasses washed in a glasswashing machine shall achieve a hygienically safe condition as a result of the cleaning procedure. Chemical and physical
40、 parameters interact to achieve this. The glasses are dried outside of the machine. The condition of the washed glasses shall meet the following general requirements: a) The glasses shall be optically clean. b) The outside of the glasses shall be dry 2 minutes after being removed from the glasswashe
41、r basket, whereby remaining droplets on the base and a remnant dampness inside the glass may be tolerated. c) The final rinsing water shall have drinking water quality in terms of colony count. DIN 10511:1999-05 8 d) A decontamination performance of 5 log10stages shall be achieved for 90 % of the gl
42、asses according to the procedure described in C.3, and/or in examinations using the wipe-test method, and no more than 5 cfu2)per 10 cm2may occur on the glasses when using the procedure described in C.3. e) The colony count in the detergent solution shall not exceed 200 cfu/ml as a standard value an
43、d 500 cfu/ml shall be considered to be a critical value. 5.3.3 Water quality Particular demands shall be placed on the water quality since this has a considerable effect on the overall washing results. Tap water of drinking water quality pursuant to the Drinking Water Ordinance 1 does not usually me
44、et the requirements placed on machine glasswashing in respect of hardness and other mineral contents. The water almost always has to be processed to obtain softened and/or demineralized water in order to prevent lime scale in the machine and deposits on the glasses. The operator is responsible for e
45、nsuring that water processing equipment used is in proper working order. 5.3.4 Temperature Operation of a glasswashing machine requires a constant supply of energy. For reasons of hygiene, it is not permissible to switch off heating elements temporarily to avoid electrical peak loads (operation at p
46、artial load) as this would involve a reduction of the temperature. For reasons of hygiene, the temperature in the detergent tank shall be at least 55 C. Since temperature has a considerable influence on the durability and serviceability of drinking glasses, the temperature of the detergent solution
47、should not significantly exceed 60 C. The temperature of the rinse agent solution should be (65 2) C. Under special conditions, e.g. increased infection risk, higher temperatures shall be used in the glasswashing machine, and/or the use of disinfection components shall be recommended. 5.3.5 Contact
48、time Glasswashing machines normally have several programme cycles. It shall be possible to fulfil the hygiene requirements set down in 5.3.2 with the shortest programme cycle. A contact time of 90 s is considered suitable to obtain a hygienically safe washing result. 6 Requirements relating to deter
49、gents and rinse agents 6.1 General Normally, in order to achieve a good washing result, a product combination should be used which applies a detergent in the decontamination phase and a rinse agent in the rinsing phase. Under certain circumstances, e.g. in the case of increased infection risk, the use of both detergents and disinfectant components is recommended. 6.2 Detergents/cleaning agents In keeping with their task in the washing process, detergents shall ensure thorough removal of all beverage and lipstic
