The current system pressure, compressor cooling water quality measurement: the maintenance on the contents of the refrigerator 1, based on equipment operation and customer needs, freezer maintenance There are plans to carry out all types of routine inspection McQuay central air conditioning maintenance, such as. 2, field guides the operator through the central air-conditioning maintenance cleaning, explain plant operation, maintenance points. 3, to provide a host and Auxiliary Equipment Problems expertise and improve programs; central air-conditioning maintenance, cleaning is the key central air conditioning maintenance how maintenance, help to improve the cooling effect, it is advantageous to shorten the cooling time, enabling energy-efficient air conditioning, beneficial to extend the life of the air conditioner, it is reasonable to use air conditioning, an important part of strengthening standardized management. Previous users of air conditioning air conditioner maintenance, cleaning inadequate attention, now working in this field should be strengthened to promote the development of the air conditioning industry.