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The Reason For Chiller Don't Chill And No Alarm?

Jul 27, 2017

The reason for chiller don't chill and no alarm?


In the course of the operation, often in the absence of refrigeration phenomenon at the same time, there is no warning prompt, making the operator no way to start, do not know what causes this problem. According to our many years of experience, the chiller is not cooling and no alarm tips analysis of the reasons summarized as follows, hoping to help the majority of users, as soon as possible to solve the problem, to restore the daily use of chillers.


1, the refrigerant is not enough, that is, we often say freon. During the operation of the chiller, the liquid refrigerant in the evaporator does not stop the heat in the water and begins to evaporate. After the compression of the compressor and the throttling of the expansion valve, it becomes a low-temperature low-pressure refrigerant into the evaporator. cycle. If the use of a long time the refrigerant will be volatile, and then affect the cooling effect. There is also a reason why the refrigerant leaks, and thus does not affect the cooling, so the chiller operator should observe whether the refrigerant is sufficient. In the case of a leaked refrigerant, it is advisable to contact the chiller manufacturer to arrange leaks and to supplement sufficient refrigerant.


2, the condenser is not cleaned for a long time, the condenser is one of the main components of the chiller. Most of the cooling water contains calcium, magnesium ions and acid carbonates. When the cooling water flows through the metal surface, there is the formation of carbonate. In addition, the dissolved oxygen in the cooling water will cause corrosion of metal, the formation of rust. Due to rust generated, the condenser heat transfer effect decreased, serious scaling will block the tube, so that the heat loss effect, thus affecting the cooling effect. Therefore, it is recommended that the condenser be cleaned once every six months.


3, dry filter blocked. When the filter is blocked, the heat transfer effect of the condenser is affected, and the cooling effect of the whole machine is poor. Therefore, it is necessary to check and clean the filter regularly. It is recommended to replace the new dry filter.


4, excessive water impurities, attached to the inner wall of the water pipe, resulting in insufficient water supply, thus affecting the cooling effect. Therefore, for poor water quality areas, it is recommended to do water treatment works or regular cleaning and replacement of water pipes to ensure the normal operation of the chiller.


In addition, the chiller selection must be accurate. Models with not in place, the same will not meet the needs of the cooling effect.