How do I set up and install the filters when using the HPA830 for the first time?

Ensure the unit is powered off and unplugged, then remove the filter grille cover by grasping the recess in the top center and pulling forward. Remove the round filter cartridge, take off the protective plastic wrap, wrap the Pre-Filter around the HEPA Filter cartridge and secure it with the fasteners provided. Place the assembled filter back into the unit with the plastic ring at the top and the tab facing out, then replace the grille cover. (Page 5)