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840144201 ENv03.qxd:840144200 ENv02.qxd
Cleaning the Air Purifier
The Air Quality Sensor
The air quality sensor is a rectangular
compartment located on the side of
the air purifier. It contains both the
sensor/sensor lens and the sensor
cleaner (see Fig. 1). The sensor cleaner
is soft and specially shaped to fit inside
the sensor/sensor lens area. Monthly
cleaning of the sensor/sensor lens is
recommended.
Fig. 1
Sensor/Sensor Lens
Sensor Cleaner
Troubleshooting Guide
The following section provides the solutions to many common problems and
questions. If your air purifier is not working correctly, review these solutions
first. If your problem is still not solved after reviewing this guide, call our toll-free
customer service number, listed on the front cover of this manual, for assistance.
The Air Purifier Will Not Turn On
• Is the air purifier plugged into a
powered outlet?
The Air Purifier Changes Speed
• Air quality sensor models are designed to sense the level of contaminants in the
air and adjust the fan speed to provide the most effective air purification possi-
ble. If the air quality sensor control is set to Auto, it will automatically change
fan speeds to adjust for changing air quality.
Reduced Air Flow or Poor Filtering
• The intake or outlet grill may be
blocked. Make sure nothing is in
front of or directly behind the unit.
10/30/08
2:46 PM
(select models only)
Cleaning the Sensor/
Sensor Lens:
1. Open the compartment door and
remove the sensor cleaner. If sensor
cleaner is difficult to grasp, pull on
the black ribbon underneath to help
release it.
2. Holding one end of the sensor clean-
er, push the piece in and out of the
sensor/sensor lens opening several
times. This will clean the area.
3. Slide the sensor cleaner back into its
storage compartment and close the
air quality sensor door. Make sure
the compartment door is fully closed
or the air purifier may not operate
properly.
• Is the fan speed knob turned on?
• The filter may be clogged. Refer to
the "Cleaning the Air Purifier" section
and vacuum if necessary.
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