Don’t panic when the refrigeration compressor stops suddenly

Don’t panic when the refrigeration compressor stops suddenly

What should be paid attention to when the refrigeration compressor stops abnormally? Some friends may not understand well, let's take a look at the editor of okmarts.com today!

　　 1. Sudden power outage and shutdown

If there is a sudden power failure when the refrigeration compressor is running, the power switch should be cut off and the suction valve and exhaust valve of the compressor should be closed immediately. At the same time, close the liquid supply valve and stop supplying liquid to the evaporator to avoid the evaporator when the machine is started next time. Too much liquid causes wet compression.

　　 2. Suddenly stop water and stop

　　 If the cooling water is suddenly interrupted, the power should be cut off immediately, and the operation of the refrigeration compressor should be stopped to avoid excessive condenser pressure. After the compressor is stopped, the suction and discharge valves of the compressor and the relevant liquid supply valve should be closed immediately, and the cause should be found to eliminate the fault and the water supply should be restored before starting.

　　3, the refrigeration compressor fails to stop

　　 When the compressor is in urgent need of shutdown due to damage to a certain part of the compressor during operation, if time permits, the normal shutdown operation can be performed. If the situation is urgent, the motor power supply must be cut off, and the suction and exhaust valves and the liquid supply valve should be closed. If the refrigeration equipment runs out of ammonia or the refrigeration compressor fails, the workshop should be cut off and wear gas-proof clothing and masks for emergency repairs. At this time, all exhaust fans should be turned on, and water can be used to pour the leaking ammonia area if necessary to facilitate emergency repairs.

　　4, shutdown in case of fire

If a fire in an adjacent building endangers the safety of the refrigeration system, the power supply should be cut off, and the exhaust valves of the reservoir, condenser, ammonia oil separator, and evaporator should be opened quickly, and the emergency ammonia unloading device and its water valve should be opened quickly , Make the system's ammonia liquid concentrated in the emergency ammonia discharge port and be diluted by a large amount of water to prevent the spread of fire and explosion.

　　 5. Shutdown on wet stroke

　　 If the refrigeration compressor has a wet stroke during operation, it should be dealt with separately according to its severity. For a slight wet stroke, the suction valve or expansion valve should be closed or closed. For severe wet strokes, shut down the suction valve and expansion valve immediately. After a severe wet stroke occurs, the refrigerant in the crankcase should be discharged, or other refrigeration compressors should be used to extract the refrigerant in the crankcase and the cylinder, and at the same time replace the lubricating oil, vacuum, and pressure test before leaks. Start the test machine.

　　 After reading the above problems and operation methods, you don’t have to panic when you encounter these abnormal downtime problems in the future!