This International Standard specifies the essential characteristics for household frozen food storage cabinets and food freezers which are wholly factory assembled, and lays down the methods of test for the checking of these characteristics.It does not apply to low-temperature compartments ("one-", "two-" and "three-star" compartments) which are covered in ISO 7371, or freezer compartments incorporated in refrigerators, which are covered in ISO 8187.It does not include refrigerating performance characteristics and tests, or particular definitions for appliances cooled by internal forced air circulation, which are the subject of ISO 8561.The tests described in this International Standard are type tests. When it is necessary to verify the performance of a freezer of a given type in relation to this International Standard, all the tests described should in principle be applied to one and the same unit.These tests can also be made individually for the study of a particular characteristic.Where no test method is specified, the particular requirement concerned is to be considered as a recommendation.The electrical and mechanical safety requirements applicable to household frozen food storage cabinets and food freezers are specified in I EC 335-2-24.Additional safety requirements applicable to mechanical refrigerating systems of household frozen food storage cabinets and food freezers are given in ISO 5149.The safety requirements applicable to gaseous and liquid fuel heating equipment of absorption-type household refrigerating systems will form the subject of a future International Standard.