Shenzhen Dongyuejin Chiller Machinery Co., Ltd. analyzes the problems caused by insufficient refrigerant of screw chiller: The screw-type chiller is responsible for providing industrial chilled water (control water temperature at 0~35°C, or 0~-40°C). Many users All of them require 24 hours of continuous operation. Therefore, the crew cannot have any problems. However, no matter what kind of chiller is used, if the usage time is too long, there will be some failures, such as: insufficient refrigerant.
First of all, following the careful analysis of the refrigerant shortage of the screw chiller refrigeration system following the East Leap Chiller plant can cause problems:
1. If the unit refrigerant is insufficient, the suction pressure and exhaust pressure of the screw refrigeration compressor are lower than the normal value.
2. If the refrigerant is insufficient, the evaporation in the evaporator decreases, and the cooling capacity decreases, resulting in a poor cooling effect.
3, will make the thermal expansion valve does not frost or rarely frost. In the air condition, no condensation or little or no condensation.
4, will cause the evaporator rarely frost or frost. In the air condition, no condensation or little or no condensation.
5, due to lack of refrigerant, often make the compressor does not operate under the rated load, causing the chiller light load or even idling, and at this time the current is lower than the rated current.
Since there are so many problems caused by the shortage of the refrigerant of the screw chiller, what happens when the refrigerant is overfilled? What is the key to causing the refrigerant shortage in the unit? There are several possibilities:
1. The cooling system of the chiller does not charge the refrigerant as required, resulting in insufficient refrigerant.
2. The air tightness of the system of the unit resulted in refrigerant leakage.
3, improper operation and maintenance, causing refrigerant leakage and so on.
Shenzhen Dongyuejin Chiller Factory reminds you that when it is found that the refrigerant of the screw chiller is insufficient, the entire system shall be strictly inspected to determine the cause or the location of the leak, so as to eliminate the malfunction and supplement the refrigerant according to the regulations. Resume normal operation. For the screw chiller refrigeration system, as long as the unit is installed correctly and reliably, there is no leakage at the pipe joints, etc., and the system can operate effectively for a long period of time without the need for replenishing refrigerant. When there is leakage of refrigerant, you should first try to solve the leak and then replenish the refrigerant.