Answer: The air filter is equipped with a differential pressure switch. When the differential pressure switch reaches the set value, the differential pressure switch is activated, or when the internal timer reaches zero, the LCD shows that the air filter is blocked, indicating that the air filter must be cleaned or replaced. Maintenance should be carried out after the air compressor is shut down and the corresponding safety measures are taken, as follows:
(1) Open the end cover.
(2) Loosen the air filter fixing bolts and take out the filter.
(3) Check the blockage of the air filter and use compressed air to blow from the inside to the outside to clean the accumulated dust. Note that the pressure of the compressed air should not exceed 0.3MPa.
(4) If the air filter is damaged, it should be replaced. To check whether the air filter is damaged, you can use an electric light to place it inside the air filter and observe whether there is light exposed from the outside.
(5) If the filter surface is stained with oil, replace the new air filter.
(6) After cleaning or replacing the filter, cover the end cover.
(7) Check that the differential pressure switch equipped with the air filter is normal and the preset value does not exceed 50kPa.
