Aprilaire ALLERGY + PET9550 User Manual page 22

How To Replace the Fine Pet Hair & Dander Trap and the Filter Cartridge
The Filter Cartridge should be replaced every 6-12 months, depending on usage.
1. IMPORTANT: First, unplug the air purifier from the electrical outlet.
2. Remove the front cover of the air purifier by pulling the front panel away from the purifier, as
shown in figure A.
3. Remove the Pre-filter, including the black Fine Pet Hair & Dander trap, by pressing down on
the top tabs and pulling back, as shown in figure B.
4. Remove the protective plastic bags from the replacement Fine Pet Hair & Dander Trap and
the Filter Cartridge.
5. Remove the black Fine Pet Hair & Dander Trap from the Pre-filter. Pull the fabric tab on top of
the used Filter Cartridge to remove it from the air purifier.
6. Place the used black Fine Pet Hair & Dander Trap and Filter Cartridge into the plastic bag to
contain the accumulated particulates and discard.
7. Place the Filter Cartridge in the air purifier so:
a. You can see the words "This Side Out" printed on the top of the Filter Cartridge frame.
b. The fabric tab is facing outward so you can use it to easily remove and replace the
Filter Cartridge in the future.
8. Place the new Fine Pet Hair & Dander Trap in the Pre-filter.
9. Return the Pre-filter containing the black Fine Pet Hair & Dander Trap by first inserting the 3
tabs on the bottom, then pinching and inserting the 2 tabs on the top until it snaps into place.
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Figure A
Figure B