Answer: When the pressure drop of the oil fine separation filter exceeds 0.08MPa (the difference between the displayed values of the two pressure gauges: the pressure before the filter element and the exhaust pressure), the machine should be stopped to replace the oil and gas separation filter element. This is because the machine unloading uses the pressure after separation as the sampling pressure. If the unloading pressure of the machine is set to the rated pressure, the actual load of the motor is the rated pressure plus the pressure difference of 0.08MPa, and the motor will be overloaded. The preset value of the oil fine separation filter element pressure difference is 100kPa. At this time, the oil fine separation filter element pressure difference will not alarm. Therefore, in order to protect the safe operation of the motor, once the oil pressure gauge pressure difference is found to be large, the oil fine separator filter element should be replaced in time.
