1. Regularly inspect the intake surface of the medium efficiency filter for blockages and damage to the surface of the filter material;
2. When installing the medium efficiency filter, it is necessary to ensure good sealing at the pressure edge of the frame to prevent air leakage;
3. Do not use heavy objects to impact the surface of the medium efficiency filter, and do not use force to pull the filter material surface of the filter;
4. When installing a medium efficiency filter, the length direction of the filter bag mouth should be perpendicular to the ground to ensure the filtration effect of the air supply and increase its service life.