This handbook of this series contains information on the organization and methods of production of installation of medium, large and small refrigeration units .. The operation of compressors, heat exchangers and auxiliary devices, automation devices . is described Information on the organization and implementation of preventive maintenance of medium and large refrigeration units with indication of labor intensity standards of repair work, norms of consumption of spare parts during repair ; described repair of small refrigeration machines in the conditions of specialized enterprises. When considering the technological operation of refrigerators, special attention is paid to quality control of products, maintenance of cold stores, methods, modes and terms of refrigeration treatment of various types of products and measures to reduce their natural loss. The mechanization of cargo operations on refrigerators is described - cargo packaging, mechanization schemes and individual machines and mechanisms used in cargo operations.