If there is no pressure in the pump station, observe the steering direction of the oil pump motor, and check whether the oil pump is empty or not, The single acting system valve in the system eliminates that the pinhole damping hole in the middle of the plug-in is blocked, the plug-in is stuck, the pilot relief valve enters foreign matters, and the pilot solenoid valve does not work
P1 remained high after the pump was started, the system plug-in was stuck in the closed state, the pilot solenoid valve was stuck in the on state, the pilot solenoid valve was abnormally charged, and the damping hole in the middle of the cover plate was blocked.
When the BPI pressure is not enough to reach the rated pressure, generally open the system valve to see whether there are foreign matters and whether the sealing ring is damaged or aged. If the plug-in is deformed and the sealing is not tight, check the oil pump after confirmation and disassemble the oil drain hole on the oil pump to see if there is too much oil return. If the viscosity of the hydraulic oil cannot reach or the oil temperature is too high, if the BPI is normal and the pressure of bp2 is abnormal, besides checking the corresponding relief valve, it is also necessary to remove the cylinder filling valve. 4. In the process of commissioning, when air is mixed into the pipeline of remote pressure regulating valve, the pressure rise lag will occur, and the speed of pressure rise will slow down when the flow of oil pump becomes smaller.