Does anyone have the instruction manual for this Bionaire F-150 Table Top Air Cleaner? I just receivedone and do not know how to clean it (was used in smoker's home). I took out the 4 filters and ordered new ones - Bionaire 1511D Dual filters. I also do not know how to change the Bionaire Air Cleaner Fragrance Cartridge. The inside is dirty and I'm afraid to try to take it apart to clean it without instructions