Mastering some basic testing methods for constant temperature and humidity test chamber maintenance is the necessary basic knowledge to solve the problem of constant temperature and humidity test chamber failure. This paper summarizes several typical refrigeration compressor failures and treatment methods that users of constant temperature and humidity chambers may encounter in their daily work and life. When encountering such failures, they can quickly judge and deal with some regularities. Common faults. First, the compressor suddenly stops during operation: 1. The reasons for the sudden stop of the compressor during operation are: (1) The suction pressure is too low, lower than the lower limit of the pressure relay; (2) The exhaust pressure is too high, causing the high-voltage relay to be powered off; (3) The oil pressure is too low, and the oil pressure relay is relayed; (4) The motor is overloaded, and the thermal relay is relayed; 2. The method for the sudden stop of the compressor during operation: (1) Check the cause, it is a pipe that is blocked by the pipeline, and if the system is insufficient in refrigerant, it will be added; (2) Check the cooling capacity or cooling air volume of the condenser; (3) Check the pipeline and oil pump of the oil delivery system; (4) Check if the power supply voltage is low or the cold load is too large; Second, the wet stroke of the compressor 1. The causes of the wet stroke of the compressor are: (1) The thermal expansion valve fails and the opening degree is too large; (2) The solenoid valve fails, a large amount of refrigerant enters the evaporation pipe after shutdown, and enters the compressor when it is turned on again; (3) Excessive system perfusion refrigeration dose; (4) The temperature of the thermal expansion valve is loose and not tied, resulting in an increase in the opening degree of the thermal expansion valve; 2. The method of eliminating the wet stroke of the compressor: (1) Close the liquid supply valve and repair the thermal expansion valve; (2) overhaul the solenoid valve; (3) releasing excess refrigerant; (4) Check the binding of the temperature sensor package; More exciting content, the situation below! Large Dish Drying Rack,Large Dish Drainer Black,Dish Drying Rack With Tray,Dish Drying Rack With Cutlery Holder Jiangmen Xinhui Siqian Xiangyi Metalwork Factory , https://www.xydryingrack.com
Constant temperature and humidity test box related knowledge: refrigeration compressor troubleshooting summary (on)