Chapter 4 Device Setup
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4.1 Installing the Air Filter
The device uses a gray foam lter that is washable and reusable, and a white ultra-ne lter that is
disposable. The reusable lter screens out normal household dust and pollen, while the ultra-ne
lter provides more complete ltration of very ne particles. The gray reusable lter must be in place
at all times when the device is operating. The ultra-ne lter is recommended for people who are
sensitive to tobacco smoke or other small particles. One reusable gray foam lter is supplied with
your device. A disposable ultra-ne lter may also be included.
If your lter is not already installed when you receive
the device, you must at least install the reusable gray
foam lter before using the device. To install the lter(s):
1. If you are using the white disposable ultra-ne
lter, insert it into the lter area rst, with the
smooth side facing toward the device.
2. Insert the required gray foam lter into the lter
area after the ultra-ne lter.
Note: If you are not using the white disposable lter, simply insert the gray foam lter into the lter area.
Note: See Chapter 6 for information on how to clean and replace the air lter.
4.2 Where to Place the Device
Place the device upright on a rm, at surface somewhere within easy reach of where you will use
it, at a level lower than your sleeping position. Make sure the lter area on the back of the device
is not blocked by bedding, curtains, or other items. Air must ow freely around the device for the
system to work properly. Make sure the device is away from any heating or cooling equipment (e.g.,
forced air vents, radiators, or air conditioners).
4. Device Setup
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