The reason why the oil filter is not clean

1. The oil type of the vacuum oil filter does not meet the standard

Insulating oil needs to be filtered through high precision to achieve a high insulation value, and most gear oil industrial oil lubricating oil filters require much coarser pores for impurities. When changing to a transformer oil filter, due to different oil products, the filter element precision placed in the general equipment is inconsistent. Therefore, before processing the oil, you also need to understand the oil performance and the working conditions that the oil will face, and place a filter element with appropriate precision.

2. Oil viscosity

High-viscosity oil cannot pass through the fine filter of the vacuum oil filter, and the precision needs to be reduced to filter it out. However, if the cleanliness of the oil is emphasized unilaterally and a precision filter is used, the operating cost of the vacuum oil filter will increase. Because the filter element is often blocked, it needs to be cleaned frequently or even replaced. In addition, the effective filtration area and filtration capacity will be different if the filter element material is different. Therefore, the viscosity of the oil is related to the high-precision selection of the oil filter.

3. Increase or decrease axial pressure

Increasing the axial pressure of the vacuum oil filter allows the oil to pass through the filter faster, but it often damages the filter element.

4. Blockage of oil filter holes

The vacuum oil filter needs to be cleaned frequently to keep the machine clean. The connecting bolts of the motor and bracket of the vacuum oil filter should be checked frequently to avoid loosening. Lubricating oil should be added frequently to the compression screw nut.

5. Control of oil capacity

When the vacuum oil filter is working, according to the oil filter capacity, after circulating and filtering 2 to 3 times the amount of filtered oil, unscrew the oil nozzle and take out the oil sample for testing until it is qualified.

6. Too much oil mark

When the vacuum oil filter is working, pay attention to the oil mark. If there is too much oil in the oil pan, open the oil return valve, drain the oil in the oil pan, and then close the oil return valve.