May cause frost cold water machine are as follows:
1, less refrigerant. Lack of refrigerant, cooling water machine evaporation temperature is low, when the evaporating temperature is below zero degrees, will be frosting fin evaporator, frost will affect the ventilation, the evaporator heat transfer effect is poor, refrigerant evaporation does not flow back to the trachea and compressor to evaporation, therefore, in the compressor and pipe frosting.
2, dry filter part of the blockage. Filter clogging the refrigerant liquid supply reduction, low evaporation temperature of cold water machine, evaporator fin will be frosting, evaporation of the refrigerant endless flow back to the trachea and compressor to evaporation, therefore, in the compressor and pipe frosting.
3, the expansion valve opening through the small or blocked. Will make the refrigerant liquid supply reduction, lower the evaporation temperature of the air conditioner, the fins of the evaporator frost, refrigerant evaporation does not flow back to the trachea and compressor to evaporation, therefore, in the compressor and pipe frosting.
4, cold water machine ventilation. The evaporator heat transfer effect is poor, refrigerant evaporation does not flow back to the trachea and compressor to evaporation, therefore, in compressor and return pipe on the frost.
5, liquid supply pipe on the bending die dented. Will make the refrigerant liquid supply reduction, the evaporation temperature of the air conditioner is low, will be frost on the evaporator fins,, evaporation of the refrigerant endless flow back to the trachea and compressor to evaporation, therefore, in the compressor and pipe frosting.
6, the air filter is too dirty. The chiller poor ventilation, evaporator for heat effect difference, refrigerant evaporation does not flow back to the trachea and compressor to evaporation, therefore, in compressor and return pipe on the frost.
7, the evaporator fin too dirty. Evaporator for heat effect difference, refrigerant evaporation does not flow back to the trachea and compressor to evaporation, therefore, in the compressor and pipe frosting.
If you read described above is not the reason of chiller frost found, please call advisory company 0755-81715587, East Star Refrigeration.