Biological reagent cold storage is an important facility for storing biological reagents, vaccines, medicines, and other items that need to be kept at a specific temperature. The refrigeration system is the core component of the cold storage, and its proper operation is essential to ensure the quality and safety of the items in the cold storage. Therefore, the maintenance and maintenance of the refrigeration system is particularly important. This article will introduce the maintenance and maintenance methods of the refrigeration system in the cold storage of biological reagents.
1. Composition and principle of refrigeration system.
The refrigeration system is mainly composed of four parts: compressor, condenser, expansion valve and evaporator. Under the action of the compressor, the refrigerant changes from low-temperature and low-pressure gas to high-temperature and high-pressure gas, and becomes a high-pressure liquid after heat dissipation by the condenser. The high-pressure liquid enters the evaporator after being depressurized through the expansion valve, absorbing the heat in the cold storage and reducing the temperature in the warehouse. After the refrigerant evaporates in the evaporator to absorb heat, it is again compressed by the compressor to form a cycle.
2. Maintenance and maintenance of refrigeration system.
1.Regularly check the working status of each component of the refrigeration system, and deal with it in time if abnormal sound and temperature are found.
2.Check the amount of lubricating oil in the compressor to make sure it is within the normal range. Insufficient lubricating oil can lead to compressor wear and affect the refrigeration effect.
3.Regularly clean the dust on the surface of the condenser and evaporator to ensure smooth heat dissipation. Too much dust can lead to reduced cooling and even damage to the equipment.
4.Inspect the connections of the refrigeration system lines to ensure that they are well sealed to prevent refrigerant leakage. If the leak is found, it should be welded or replaced in time.
5.Regularly check the opening of the expansion valve to make sure it is working properly. Improper opening of the expansion valve can affect the refrigeration effect and even lead to system failure.
6.Check the safety protection devices of the refrigeration system, such as temperature controllers, pressure controllers, etc., to ensure that they are sensitive and reliable. Failure of safety protection devices can lead to unstable or even malfunctioning of the refrigeration system.
7.Clean the cooling water system regularly to prevent the growth of limescale and algae and ensure the cooling effect. Blockage in the cooling water system will affect the heat dissipation of the condenser, resulting in a decrease in the cooling effect.
8.During the shutdown of the refrigeration system, the warehouse should be thoroughly cleaned to prevent the accumulation of contaminants. At the same time, check the temperature sensor, humidity sensor and other detection equipment in the warehouse to ensure that it is accurate and reliable.
9.Regularly monitor the operating parameters of the refrigeration system, such as temperature, pressure, current, etc., and find and deal with abnormalities in time.
10.Replace wearing parts such as compressor filters, filter driers, etc., regularly according to the instruction manual of the refrigeration system.
3. Summary. The maintenance and maintenance of the refrigeration system is of great significance to ensure the normal operation of the biological reagent cold storage. Only by doing a good job in the maintenance and maintenance of the refrigeration system can we ensure the quality and safety of the items in the cold storage, reduce the failure rate, and improve the operation efficiency. The maintenance and upkeep of refrigeration systems requires specialized knowledge and skills, and it is recommended that they be operated by qualified professionals. At the same time, it is necessary to strengthen the training and management of refrigeration system operators, improve their maintenance awareness, and ensure the safe, stable and efficient operation of the refrigeration system. Cold storage construction
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