During normal shutdown, the fan should gradually open the exhaust valve and simultaneously gradually close the exhaust valve. Gradually reduce the intake valve to 20~25 degrees, press the stop button, and pay attention to any abnormal phenomena during the shutdown process. After the unit stops for 5~10 minutes or when the bearing temperature drops below 45 degrees Celsius, oil supply can be stopped. For units with floating ring seals, the sealing oil pump must continue to supply oil until the body temperature is below 80 degrees Celsius. After the unit shutdown, rotate the rotor 180 degrees at regular intervals within 2~4 hours.