scope:

This standard specifies the requirements for the safety of persons and property, provides guidance for the protection of the environment and establishes procedures for the operation, maintenance and repair of refrigerating systems and the recovery of refrigerants. This standard applies: . to refrigerating systems, stationary or mobile, of all sizes including heat pumps; . secondary cooling or heating systems; . the location of the refrigerating systems; and . to parts replaced and components added after adoption of this standard if they are not identical in function and in the capacity. This standard does not cover "motor vehicle air conditioners". This standard does not apply to goods in storage, with respect to spoilage or contamination. This standard is applicable to new refrigerating systems, extensions or modifications of already existing systems, and for used systems, being transferred to and operated on another site. Deviations are permissible only if equivalent protection is ensured. This standard also applies in the case of the conversion of a system for another refrigerant. This Part 4 of the International Standard specifies requirements for safety and environmental aspects in relation to operation, maintenance, repair of refrigerating systems and the recovery, reuse and disposal of all types of refrigerant, refrigerant oil, heat transfer fluid, refrigerating system and part thereof. These requirements are intended to minimize risks of injury to persons and damage to property and the environment resulting from improper handling of the refrigerants or from contaminants leading to system breakdown and resultant emission of the refrigerant. Subclauses 4.1.1, 4.1.2, 4.3, 5.1.1 to 5.1.4, 5.2, 5.3.1, 5.3.3 and 6.6 of this International Standard are not applicable to unitary systems having a power cord, being factory sealed, and in conformance with IEC 60335 series.