Alen BreatheSmart FIT50, User Manual

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www.AlenCorp.com   1-800-630-2396

How To Clean The SmartSensor

The SmartSensor uses an infrared light to detect airborne particles. After prolonged periods 

of use, dust can accumulate on the glass lens and affect the sensitivity of the sensor. If this 

occurs, your unit will run on the highest speeds when set in Automatic mode and will not come 

down to the lower speeds even after cleaning the air. To clean the sensor lens, first turn your 

unit off. Wet the end of a cotton swab with water and wipe the lens with it. Dry the lens with the 

other end of the cotton swab. For best performance, clean the SmartSensor lens each time you 

replace your filter.

WARNING! RISK OF ELECTRIC SHOCK - These servicing instructions are for use by 

qualified personnel only. To reduce the risk of electric shock, do not perform any servicing 

other than that contained in the operating instructions unless you are qualified to do so.

3.  Remove the used filter 

by pulling out on the pull 

strings. Place the used 

filter in a plastic bag to pre-

vent dust from re-entering 

the air. 

4.  Take the new filter out of 

the plastic bag and insert it 

into the air cleaner with the 

pull strings facing outward.

5.  Insert the top tabs of the 

front cover first and then 

the lower part of the cover 

will snap into place.