How to clean the condenser of the central air-conditioning chiller

How to clean the condenser of the central air-conditioning chiller

With the improvement of the quality of life of residents, the "new aristocratic" central air conditioners in air conditioners have also entered the homes of ordinary people from tall shopping malls and villas. However, central air conditioners also need regular cleaning and maintenance to achieve the best effect, especially After a long period of unused. Therefore, before the arrival of hot weather, it is best to perform a comprehensive cleaning and sterilization of the central air conditioner. The editor of okmarts.com will tell you how to clean the condenser of the air conditioner, and give you a cleaner and healthier air-conditioning environment.

　　 1. The working principle and function of air conditioning condenser

　　 Refrigerant has a characteristic, when the volume and pressure are high, it will become liquid. The refrigerant is delivered to the condenser by a compressor, and the role of the condenser is to cool the high-temperature and high-pressure gas into a high-temperature and high-pressure liquid. This is the process of condensation and also a process of heat dissipation. The condenser is a device that continuously compresses the refrigerant from gas to liquid. In this process, the condenser will continuously dissipate heat, so the surface of the condenser is very hot.

　　 2. The meaning of air conditioning condenser cleaning

Due to the problem of the water quality of the supplementary water, the condenser will generate scale and oxygen corrosion products after heating by heat exchange, which will cause the system to be dirty and block, resulting in poor water flow. If it is not cleaned for a long time, the heat exchange effect of the condenser will be reduced, affecting the use. Regular cleaning, the meaning after cleaning is as follows:

　　 1. Save energy and reduce operating costs

In the heat transfer process of the evaporator and condenser of the central air conditioner, fouling directly affects the heat transfer efficiency and the normal operation of the equipment. The operation results of the central air conditioning unit show that the uncleaned central air conditioning main system uses electricity or fuel after a period of operation. Consumption will increase by 10-30%, reduce service life and reduce equipment depreciation and use fees.

　　 2. Reduce accidental shutdowns and improve the cooling effect

　　Cleaning the condenser can remove sludge, make the pipeline unblocked, improve the thermal efficiency of the condenser and evaporator, thereby avoiding the phenomenon of high-pressure operation and over-pressure shutdown, improving the refrigeration effect, and ensuring the safe and efficient operation of the system.

　　 Three, air conditioning condenser cleaning steps

　　1. Close the condenser inlet and outlet valves respectively;

　　2, drain a small amount of water from the system;

　　3. Establish temporary circulation systems on the inlet and outlet pipes of the condenser (the drain valve, pressure gauge, safety valve, etc. can be removed, and the hose can be connected to the external circulation pump);

4. After dissolving the safe and efficient descaling agent, use a pump to inject it from the low water inlet, return it from the water outlet, and soak it for about 3-5 hours. At the same time, continuously check the efficacy of the water in the tank until there is no reaction or scale in the tank. Until all cleaned;

　　 5. Drain sewage and rinse with water;

6. The condenser end cover can be opened, and the inner wall of each condenser copper pipe can be pulled back and forth with a brush to clean the sludge scale on the inner wall of each condenser copper pipe; use a high-pressure water gun to clean the inner wall of each condenser copper pipe The sludge scale is cleaned up, and the metal surface of the copper pipe is required to be exposed, bright and non-corrosive;

　　7. Rinse with clean water and drain the sewage;

　　 8. Reshape the end cap of the condenser to restore all parts of the system;

　　9. Add water to the pre-filming agent to circulate for 10-20 minutes, soak for about 24 hours, and drain the dirt, so that a protective film is prefabricated on the inner wall of the cleaned condenser copper pipe to prevent oxygen corrosion and slow down scaling.

　　 10. Restore all parts of the system and test pressure and everything is normal.