How to clean the screw refrigeration unit?

Screw refrigeration unit is generally composed of screw refrigeration compressor, condenser, evaporator, oil separator, automatic control element and instrument. Mainly clean the compressor, condenser, evaporator and oil separator. The cleaning of water system includes the cleaning of cooling water system and the cleaning of chilled water system. The cleaning of cooling water system is mainly to remove the deposits such as scale, biological slime and corrosion products on the inner wall of cooling tower, cooling water pipeline and condenser heat exchange surface. The cleaning of chilled water system is mainly to remove biological slime, corrosion products and other deposits on the heat exchange surface of evaporator, the inner wall of chilled water pipeline, the inner wall of fan coil and air conditioning system equipment. 1. The main cleaning methods of physical cleaning are: brush with steel wire brush; Scrape with a special scraper roller; High pressure water jet cleaning, etc. These methods are mainly suitable for water-cooled condensers and shell-and-tube evaporators. High pressure water jet cleaning, this method can also be used to clean pipes and other equipment. When cleaning the heat exchanger, it is necessary to remove the heads at both ends of the heat exchanger and clean the heat exchange tubes one by one with a high-pressure water gun. For pipelines, high-pressure water jet with flexible gun head can be used for cleaning. 2. Chemical cleaning Chemical cleaning is a method to dissolve, loosen, fall off or peel off the deposits in the equipment to be cleaned through the action of chemical agents. Chemical cleaning is usually used in combination with physical cleaning. Circular method is one of the most widely used methods. By using temporary cleaning tank and other methods, the cleaning equipment forms a closed loop, and the cleaning liquid circulates continuously, so that the deposited layer dissolves and falls off through the chemical action and scouring action of fresh cleaning liquid.