Mistakes screw chiller operation Misunderstanding screw chiller operation prone: Before power is not closed shell and tube condenser inlet valve, this will result in the phenomenon of channeling water. Part of the cooling backwater flow away from the shell and tube condensers, thus reducing the cooling water flow shell and tube condenser, causing the unit condensing pressure rising, the host running the current increases, resulting in decreased cooling capacity, but also a serious screw chillers stop working. In this way, the costs of electricity chillers, refrigeration efficiency decreases, equipment failure rate increases. Start from the wrong operation, the host of the cooling water outlet temperature and condensing pressure. The unit will alarm, the operator will cause wrong judgment, that the cooling water is not enough, so the condenser cooling water pump inlet valve and outlet valve to open a large hydraulic system chiller, cooling tower fan and some will be open, this will cause cooling tower fan, and pump power increases, the cost will increase a lot. Some operators even open cooling water pump. To open the cooling water pump can reduce the condensing pressure and coolant temperature, so the pump is running electricity is wasted. Unit cooling water system is the correct method of operation: a, before starting the closed shell and tube condenser inlet valve to prevent channeling water unit. b, open the valve and out of the shell and tube condenser cooling water pump on, adjust the condenser inlet and outlet pressure. c, if the shell and tube condenser water inlet and outlet pressure gauge pointer swing is too large, then there is air in the cooling water system, you need to empty the gas within the unit, to be normal only after the pressure gauge. Screw chiller pressure is how the formation of industrial chillers and a screw chiller to provide chilled water cooling system, according to the needs of users to tailor-made screw chiller, screw chiller refrigeration general conditions To: frozen water temperature 12 ℃ drum dedicated chiller, water 7 ℃ chemical reactor dedicated chiller, cooling water 30 ℃, cooling water 35 ℃; the unit operating range: frozen water temperature 5-20 ℃; the use of programmable PLC program controller, touch screen interface operation, screw chiller that stress is how did this happen? Water-cooled screw chiller sub-cooled type two, the difference is that the refrigerant condensing mode (ie cooling mode), when the compressor discharge pressure (ie high pressure) has a direct relationship with the heat, and suck air pressure (i.e., low pressure) with the chilled water temperature is directly related. Screw chiller in summer outdoor temperature 32 ℃ and ventilated conditions, water-cooled high pressure at 14 ~ 18Kg / cm 2 within the normal range, if over 22Kg / cm 2, the unit will protect the jump stop; air-cooled high-pressure at 17 ~ 22Kg / cm 2 is normal, if ultra 28Kg / cm 2, the unit will protect the jump stop. When the screw chiller compressor when working with low-pressure chilled water temperature and flow, generally evaporator outlet is 7 ℃, the low pressure of 4Kg / cm 2, the water is 15 ℃, low pressure is about 4.8Kg / cm 2 , the water is 20 ℃, low pressure is about 5.3Kg / cm 2. Pressure screw chiller compressor shutdown is proportional with the temperature in the summer is usually 10 ~ 11Kg / cm 2, the winter is 8 ~ 9Kg / cm 2. Roller dedicated chiller, Jiangsu chillers, refrigeration equipment provided by Bo Sheng Sheng Refrigeration Equipment Co., Ltd. Nanjing Bo. Refrigeration Equipment Co., Ltd. Nanjing Bo Sheng (www.zgwksb.com) (http://www.zgwksb.com) strong, credible, in Nanjing refrigeration equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Bo Sheng refrigeration equipment and you hand into the brilliant, for a better future! You can also access (www.zgwksb.com/supply_details_43779580.html), for more information about the company.