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The refrigeration compressor of the screw chiller has a simple structure and a small number of parts. There are no vulnerable parts such as valves and piston rings. Its main friction parts such as rotors and bearings are relatively high in strength and wear resistance, and lubrication conditions Good, so the machining volume is small, the material consumption is low, the operation cycle is long, the use is more reliable, the maintenance is simple, and it is beneficial to realize the automation of operation.

　　 Even the best equipment will have some failures after a long time of operation, especially the screw chiller refrigeration compressor, which requires everyone to pay attention to!

◆When the screw chiller is in use, if the compressor discharge is abnormal, you need to check carefully to see what the fault is. If the compressor suction temperature is higher than the evaporation temperature, it may be the following aspects : The system has insufficient refrigerant refrigerant, you can add refrigerant to check; if the evaporator refrigerant in the screw chiller is insufficient, it may cause compressor failure, you need to open the large flow valve; the water content in the refrigeration system may cause failure if the water content exceeds the specified value. , The water content needs to be checked regularly; the regulating valve must also be observed carefully, once the liquid supply is small, increase the liquid supply in time; it is necessary to regularly check the pipe insulation in the refrigeration system, and if there is a problem, replace the insulation material in time.

◆Secondly, the discharge temperature of the screw chiller compressor is higher than the temperature under the pressure. At this time, you need to check the following aspects: check the exhaust valve, once the exhaust valve is broken, pay attention to opening the cylinder to check the valve in time; check the safety valve If there is any air leakage, repair and solve it in time; check whether the piston ring is leaking, repair and replace if there is a problem; check whether the gasket under the cylinder liner is leaking, check and replace it in time.

◆In addition, the compressor suction pressure of the screw chiller is too low. At this time, you need to troubleshoot and solve the following aspects: remind to see if the throttle valve or filter in the screw chiller is blocked, and check if the problem is found. And clean; check whether the refrigerant in the refrigeration system and evaporator is sufficient, and replenish the refrigerant in time; check whether there is too much oil in the refrigeration system, and release the oil in time.