AS NZS 60335.2.89 pdf download

AS NZS 60335.2.89 pdf download.Household and similar electrical appliances—Safety
1 Scope
This clause of Part 1 is replaced by the following. This part of IEC 60335 specifies safety requirements for electrically operated commercial refrigerating appliances and ice-makers that have an incorporated motor-compressor or that are supplied in two units for assembly as a single appliance in accordance with the instructions (split system). NOTE 1 01 Examples of appliances that are within the scope of this standard are – refrigerated display and storage cabinets; – refrigerated trolley cabinets; – service counters and self-service counters; – blast chillers and blast freezers; – commercial ice-makers. As far as is practicable, this standard deals with the common hazards presented by these types of appliances including those that use flammable refrigerants and appliances employing R-744 refrigerant. This International Standard is not applicable to appliances with a mass of flammable refrigerant exceeding the limits specified in 22.1 1 0 or to appliances with that use refrigerants with a toxicity classification of B according to ISO 81 7. It does not cover those features of construction and operation of refrigerating appliances that are dealt with in ISO standards. NOTE 1 02 Attention is drawn to the fact that – for appliances intended to be used in vehicles or aboard ships or aircraft, additional requirements can be necessary; – in many countries, additional requirements are specified by national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities. NOTE 1 03 This standard does not apply to – appliances using flammable refrigerant in transcritical refrigeration systems; – domestic refrigerating appliances (IEC 60335-2-24); – split systems having a refrigerant charge of flammable refrigerant exceeding 1 50 g in any refrigerating circuit; – industrial refrigerating systems; – motor-compressors (IEC 60335-2-34);
3 Terms and definitions
This clause of Part 1 is applicable except as follows. 3.1 Definitions relating to physical characteristics 3.1 .9 Replacement: normal operation operation of the appliance under the following conditions: Appliances are operated at an ambient temperature in accordance with 5.7, empty, with doors or lids closed, or roller blinds closed or open, whichever is the more unfavourable. User adjustable temperature control devices are short-circuited or otherwise rendered inoperative.Devices that are switched, by dew-point controls or clocks, are switched on or off, whichever is the more unfavourable. For appliances connected to a water supply, the water other than cooling water, is at a temperature of 1 5 °C ± 2 °C. The cooling water is at the maximum temperature specified in the instructions. 3.1 .1 01 design pressure gauge pressure that has been assigned to the high-pressure side of a transcritical refrigeration system Note 1 to entry: The design pressure assigned should take into account pressures that could be expected during transportation of the transcritical refrigeration system. 3.1 .1 02 refrigerant charge mass of refrigerant within a refrigerating circuit 3.5 Definitions relating to types of appliances 3.5.1 01 refrigerated display and storage cabinet cabinet which displays or stores beverages or chilled or frozen foodstuff placed therein and which is cooled by a refrigerant unit 3.5.1 02 ice-maker appliance in which ice is made by freezing water by a device consuming electrical energy Note 1 to entry: The appliance may be provided with a compartment for storing the ice. 3.6 Definitions relating to parts of an appliance 3.6.1 01 ancillary heating element heating device which performs an auxiliary function, such as a defrost heater, door heater or anti-condensation heater 3.6.1 02 free space space with a volume exceeding 60 l in which a child can be entrapped and which is accessible after opening any door, lid or drawer and removing any detachable internal part, including shelves, containers or removable drawers which are themselves only accessible after opening any door or lid Note 1 to entry: In calculating the volume, a space with any single dimension not exceeding 1 50 mm or any two orthogonal dimensions each of which do not exceed 200 mm is ignored. 3.6.1 03 gas cooler heat exchanger in which, after compression, the refrigerant is cooled down, by transferring heat to an external cooling medium, without changing state