Questions about applying settings?
Hide the air volume surrounding the blower (if it is showing).
Select the Blower volume, the cylindrical filter, and the region surrounding the guide vanes. (Be sure to select the volume between the guide vanes if they are separate from the surrounding volume.)
To modify the mesh sizing, do ONE of the following:
Slide the Size Adjustment slider to 0.5
Click Apply changes.
Click Spread Changes.