... protect 4. high quality, stable running Specifications: Model Capacity (Nm3/min) Voltage (V) Refrigerator Power (Hp) Cooling water circulation ( ... control of machine;automatic drainage control; the each points (air inlet, air exit, evaporation, condensation, dew point) temperature detection; fault ... products:Certificates of products: Excellent Water-cooling Refrigeration /Air Dryer for Air Compressor