ISO/DIS 16522

DRAFT INTERNATIONAL STANDARD ISO/DIS 16522
ISO/TC 86/SC 3 Secretariat: ANSI
Voting begins on Voting terminates on
2002-04-25 2002-09-25

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Essais et détermination des caractéristiques de performance des systèmes de réfrigération de fabrication

industrielle — Générateurs de glace automatiques et compartiments de conservation pour le commerce

In accordance with the provisions of Council Resolution 15/1993 this document is circulated

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est

To expedite distribution, this document is circulated as received from the committee

secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

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THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH

1 Scope ...................................................................................................................................................1

2 Normative references....................................................................................................................1

3 Terms and definitions ...................................................................................................................1

4 General mechanical and physical requirements...............................................................2

5 Testing and rating requirements..............................................................................................2

6 Data to be published .....................................................................................................................4

7 Marking and nameplate data......................................................................................................5

8 Instructions for use and maintenance ....................................................................................5

9 Voluntary conformance................................................................................................................5

Annex C (normative) Method of test of ice storage bins.....................................................................................14

Annex D (Informative) References.........................................................................................................................16

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

Draft International Standards adopted by the technical committees are circulated to the member bodies for

voting. Publication as an International Standard requires approval by at least 75% of the member bodies

1.1. This standard establishes testing procedures and methods of rating the performance of factory-made

1.2 This standard does not apply to ice-making devices intended to be incorporated in household appliances.

1.3 Ice may be produced in irregular shapes, flakes, ribbons, or wafers as well as uniformly shaped ice of not

• IEC 60335-1, 1991, Safety of household and similar electrical appliances – Part 1: General requirements,

• IEC 60335-2-24, 1993, Safety of household and similar electrical appliances – Part 2: Particular

For the purposes of this International Standard, the following definitions apply.

3.1 Automatic ice-maker. A factory-made assembly (not necessarily shipped in one package) consisting of a

condensing unit and ice-making section operating as an integrated unit, with means for making and harvesting

ice up to a maximum of 2500 kg/24 h at the standard rating conditions. It may also include means for storing or

3.1.1 Self-contained model. A model in which the ice making mechanism, storage compartment and

3.1.2 Split system ice-maker. A model in which the ice-making mechanism and condenser or condensing unit

3.1.3 Cubes-type ice-maker. The word “cube” is not a reference to a specific shape or size. It is a method of

distinguishing equipment that has alternate freezing and harvesting periods from continuous operation as used

3.2 Blow-Down. Refers to the dissipation of a certain percentage of water to control the clarity of ice or to

3.4 Ice storage bin. A factory-made assembly (not necessarily shipped in one package) which consists of a

3.5 Published ratings. A statement of the assigned values of those performance characteristics, under stated

rating conditions, by which a unit may be chosen to fit its application. These values apply to all units of like

nominal size and type (identification) produced by the manufacturer. As used herein, the term "published

ratings" includes the rating of all performance characteristics shown on the unit or published in specifications,

advertising or other literature controlled by the manufacturer, at stated rating conditions.

3.5.1 Standard rating. Ratings based on tests performed at standard rating conditions.

3.5.2 Application rating. Ratings based on tests performed at other than standard rating conditions.

3.6 Rating conditions. Any set of operating conditions under which a single level of performance results, and

3.6.1 Standard rating conditions. Rating conditions used as the basis of comparison of performance

3.6.2 Application rating conditions. Ratings based on tests performed at conditions other than standard rating

3.7 Separate storage compartment. A compartment for storage of ice which is separate from the ice making

3.8. Quality of harvested ice. The percentage of ice contained in the harvested ice (as per 5.5.4.1, and Annex

4.1 The machine and its parts shall be constructed with adequate strength and rigidity for normal conditions of

4.2. Moving parts, which may constitute an accident hazard, shall be effectively guarded when the machine

4.3 Pipes and connections to moving or resiliently mounted parts shall be arranged so as not to foul or

transmit vibrations to other parts. All other pipes and connections shall be anchored and free length shall be

4.4 There shall be no sharp edges or corners liable to cause injury under normal conditions of use.

4.5 Doors/lids under normal conditions of use shall be smooth and positive in action and designed to function

4.6 Materials shall be durable and not favour the development of mould or emit odors. They shall also be

4.7 Internal and external finishes shall be resistant to wear and capable of being cleaned effectively and

hygienically. Finishes shall not crack, chip, flake, rub off or soften under normal conditions of use or during

4.8 The design and construction of all parts of the refrigerating system subject to internal pressure shall take

into account the maximum working pressure to which they will be subjected when the machine is in operation or

5.1 General conditions. Automatic ice-makers shall be tested for rating in accordance with Annex A. The

calorimeter test (Annex B) need not be performed on cube-type ice-makers. Automatic ice-makers shall be

tested using all components supplied with the machine and installed according to the manufacturer’s installation

5.2 Electrical conditions. All standard rating tests shall be performed at the nameplate rated voltage(s) or

frequency or at the mean of the rated voltage range(s)∀2,0% and at the rated frequency ± 1,0%. For automatic

ice-makers with dual nameplate frequency ratings, standard rating tests shall be performed at both frequencies,

or at the lower of the two frequencies, if only a single standard rating is to be published. For automatic ice-

makers with dual nameplate voltages, standard rating tests shall be performed at both voltages, or a the lower

5.3 Requirements for split systems. All standard ratings for split systems shall be determined with at least

7.6m of interconnection tubing on each line, of the size recommended by the manufacturer. The line sizes,

insulation and details of installation shall be in accordance with the manufacturer's published literature.

5.4 Method of testing for bins. Ice storage bins shall be tested for rating in accordance with Annex C and

installed in accordance with the manufacturer’s instructions. Where units are intended to be used with legs, the

5.5.1 General. Standard ratings shall be established at the standard rating conditions specified in 4.5.3 and by

the test methods specified in A2. All standard ratings shall be verified by tests as specified in 4.1.

5.5.2 Ratings for cube machines. For machines with adjustable size ice cube settings, standard ratings

require the publication of ratings for the largest size cube setting and for the smallest size cube setting. Ratings

for any other intermediate size cube settings may be published as application ratings. The ice cube size

5.5.3 Standard rating conditions. The conditions of test for standard ratings are as follows:

(For a split-system unit, the condenser air inlet temperature shall be 32 C with an indoor ambient

Water inlet pressure................................... 200∀30 kPa.(measured as close as possible to the inlet

5.5.4.1 Ice harvest rate. The amount of 0°C ice harvested, stated in kg / 24h, (corrected to 335 kJ/kg per 5.1),

stated in multiples of one. Cube-type ice-makers are considered as producing 100% quality ice.

5.5.4.2 Condenser water use rate. The amount of water used by the condensing unit (if water cooled), stated

in L/10kg of ice, as determined in 5.5.4.1, stated in multiples of one. Condenser water shall be the same

5.5.4.3 Potable water use rate. The amount of potable water used in making ice, including blow down and for

defrosting, stated in L/10kg of ice, as determined in 5.5.4.1, stated in multiples of 0,1.

5.5.4.4 Energy consumption rate. Total energy input rate, stated in kWh/10kg of ice as determined in 5.5.4.1,

stated in multiples of 0,1. For split systems, total energy input shall include condensing unit energy.

5.5.4.5 Bin ratings for self-contained ice-makers. For self-contained ice-makers, the theoretical storage

capacity and the theoretical storage effectiveness of the ice storage bin shall be determined in accordance with

Annex C. For these models, the internal volume is the volume calculated up to the intended shut-off level. The

intended shut-off level is defined as the height of the thermostat bulb; the bottom of the curtain or the height of

5.5.4.6 Bin ratings for stand alone bins. For stand alone bins, the theoretical storage capacity and the

theoretical storage effectiveness of the ice storage bin shall be determined in accordance with Annex C. For

these models, the internal volume is the volume calculated up to the top of the bin.

5.6 Application ratings. Ratings at conditions other than those specified in 5.5.3 shall be published as

application ratings and shall be based on data determined by the methods of test prescribed in clause 5.1

through 5.4. Application ratings shall include at least one of the following conditions:

Where machines are intended for use in an ambient temperature range of 10°C to 43°C, ratings shall include

5.7 Minimum data requirements for published ratings. The minimum data required for published ratings shall

include those performance characteristics of 5.5.2 and 5.5.4 if applicable. Wherever application ratings are

published or printed they shall include or be accompanied by the standard ratings, clearly designated as such,

5.8.1 Automatic ice-makers. To comply with this standard, published ratings shall be based on data obtained

in accordance with the provisions of Clause 5 of this standard and shall be such that any production unit, when

5.8.1.1 Verification of tolerances shall be assessed on the average of three test units if the first test unit is

5.8.1. Ice storage bins. The bin theoretical storage capacity shall not be lower than 97% of its published

rating and theoretical storage effectiveness not less than 95% of its published rating.

Bin theoretical storage capacity (self-contained or free-standing storage bin only) (kg)

7.1 Marking automatic ice makers and storage bins shall be provided with a durable nameplate, firmly

7.2. Nameplate data. The nameplate shall display the manufacturer's name, model number, serial number,

international number of refrigerant used or blend of gas, mass of refrigerant used (kg), information on power

source(s) for which the machine is intended and all markings and nameplate or trademark data laid down by

8.1 Every appliance shall be accompanied on delivery by instructions for its use and maintenance. These

a). the installation requirements (best location, leveling, connection – if required – for blow down water,

b). the overall space required in use, with sketches showing the appliance with the means of access open

c). for appliances, which are intended to be built-in, the recess dimensions together with any additional

e). the instructions for use of the various controls [such as thermostat(s), indicator lights, air circulation and

f). the limit values of the range of ambient temperature for which the appliance is designed and the fact that

the performance may be affected by such factors as the location of the appliance, ambient temperature and the

frequency of door opening. If appropriate, a warning shall be given that the setting of the thermostat or other

h). the action to be taken when the appliance is switched off and taken out of service temporarily or for an

extended period, for example, emptied, defrosted, cleaned and dried, and the door(s) or lid(s) propped ajar;

i). the necessity that, for doors or lids fitted with locks and keys, the keys should be kept out of the reach of