This standard specifies the terms and definitions, basic parameters, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality commitments of semi-hermetic piston single-stage refrigerant compressors. This standard applies to semi-hermetic piston single-stage refrigerant compressors (hereinafter referred to as "compressors"). This standard does not apply to compressors using R744 as the refrigerant and compressors in the following products:
——household refrigerators and household freezers;
——transport and special-purpose refrigeration and air-conditioning equipment;
——fully enclosed compressors.