Oil pump motor filter assembly：

1. In order to ensure a more efficient filtration effect, we use two-stage filtration. The first stage is coarse filtration, and the second stage is precision filtration.

2. In order to ensure the normal use of the machinery, there is sufficient lubrication. The secondary automatic oil filter is equipped with a negative pressure gauge that can identify whether the oil circuit at the suction end is normal, and when the pointer indicates that it is normal within -0.05Map (green area). In the suction state, the suction pressure of the oil pump pipe is within -0.03Mpa for the state of good, and the pointer indicates that it is abnormal (yellow area and red area) above -0.05Mpa, please consider whether the oil circuit and the primary and secondary filtration devices are reasonable. During use, the pointer indication is above -0.05Mpa, please consider whether the primary and secondary filtration devices are blocked. When the pointer indication is still above -0.05Mpa when the secondary filter handle is rotated left and right, please clean the primary and secondary filter devices.