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FM22 H.E.P.A. AIR CLEANER USERS MANUAL 

 

READ AND SAVE THESE INSTRUCTIONS 

Pure n Natural Systems, Inc. recommends that a licensed electrician or licensed 

contractor install units. 

 

 

WARNINGS: 

 

1.

 

Always unplug or disconnect the air cleaner from power supply before servicing. 

2.

 

To reduce the risk of electric shock or injury to persons, do not expose to water or 
rain, do not use in a window. 

3.

 

Do not use this fan with any solid state speed control device. 

 
 

FILTER CHANGING: 
 

1. Pre Filter  

 

 

Replace every 3 to 4 weeks. 

2. Carbon Panel Filter    

Replace at least every 2 months. 

3. H.E.P.A. Filter 

 

Replace at least every 12 months. 

 

Step 1.

 The Pre Filter is located behind the intake door (service door). The Pre Filter is a 

blue and white polyester, pre-tack filter. The intake door is located closest to the 
HI/LO/OFF switch on the face of the system. Unclip the two latches on the intake door 
and the door will swing down. The Pre Filter is the first filter behind the intake door. Peel 
away dirty Pre Filter and discard. Install the new Pre filter with the white side out. Close 
door. DO NOT WASH PRE FILTERS. 
 

Step 2. 

 The carbon filter is located behind the Pre Filter. Follow Pre Filter changing 

instructions from Step 1. Remove Carbon Filter, discard and replace with new Carbon 
Filter.  DO NOT WASH CARBON FILTERS. 
 

Step. 3.

  Remove the adjustable louver door. Remove the H.E.P.A. Bar.  The H.E.P.A. 

Filter is a pleated media surface with a metal frame. Slip the H.E.P.A. Filter out of the 
system, discard and replace with new H.E.P.A. Filter. DO NOT WASH H.E.P.A. 
FILTER. 
 

 

Filter maintenance may vary according to each situation. 

 
 

For any questions, please contact our customer service department at 

1-800-237-9199

 
 
 

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