Maintenance method of low temperature brine chiller

Maintenance method of low temperature brine chiller

Low-temperature refrigerators should pay more attention to the maintenance of the water condenser. A small failure may be an invisible killer of the later equipment, so please pay more attention to the maintenance and cleaning of important parts of the refrigerator, such as the condenser. The main failures of low-temperature refrigerators are mostly caused by internal and external factors. We should clean the water condenser scale to ensure the heat exchange effect of the water condenser. For some failures caused by the low evaporation pressure caused by the low pressure switch open circuit, we should turn the hot air side clockwise. Route valve or replace expansion valve, check for leaks, repair leaks, and refill refrigerant. During the inspection process, some damaged refrigerator parts should also be replaced in time.

It is mainly manifested in such reasons as the dehumidifier does not run when the power is turned on, the compressor runs intermittently, the evaporation pressure is too high, the evaporation pressure is too low, the system noise, the outlet air pressure drop is too large, and the shutdown is unreasonable during operation. There are also types of treatment methods. Many, such as checking the incoming power switch and fuse, checking the wiring and tightening, checking whether the low-voltage switch control pipeline is blocked, etc. The evaporation temperature increases with the increase of the evaporation pressure.

When the air condenser has poor heat dissipation, we can blow the condenser with dry compressed air. When there is air in the refrigeration cycle, we can re-evacuate and replace the refrigerant. The expansion valve temperature sensor is not close to the evaporator outlet pipe. The wall can be reinstalled with a good-feeling temperature bulb. In addition, if the inlet pressure is too low, the ambient temperature is too high, or the air volume is too large, the inlet temperature is too high. We all use this to make the working conditions meet the nameplate requirements or Re-select dehumidifier.

　　Sometimes when the condensing pressure is too high and the high-pressure open circuit is caused, it is necessary to adjust the working conditions or re-select the dehumidifier. For the low-temperature refrigerator, we should remove the dust on the air condenser surface to keep the cooling air duct unblocked. When freezing at low temperature, some volatile components in the substance lose little, which is suitable for freezing some chemical products, medicines and food. The freezer works at low temperatures, so it is particularly suitable for many heat-sensitive substances. Such as proteins and microorganisms will not be denatured or lose biological vitality. Therefore, it is widely used in medicine.

　　Because the freezing is carried out under vacuum, there is very little oxygen, so some easily oxidized substances are protected. In the freezer process, the growth of microorganisms and the action of enzymes cannot proceed, so the original properties can be maintained. The frozen material is loose, porous and spongy. After adding water, it dissolves quickly and completely, and restores its original properties almost immediately.