How do I set up and install the filters when first using the HPA5100?

Ensure the unit is powered off and unplugged, then remove the front grille by grasping the sides and pulling forward. Remove the protective plastic wrap from the filters, place the HEPA Filter(s) into the housing with the red removal pull tabs facing outwards, add the optional Enhanced Odor and VOC Filter(s) if using, then secure the Pre-Filter in front with edges under the fasteners before replacing the front grille. The air purifier must be fully assembled before use. (Page 5)