|  
			 Disconnect the power cord, 
			  remove the air cleaner from your heating/cooling system, and take 
			  the unit outside. Undo the two clips holding the air cleaner together 
			  and open like a book on a flat surface, removing the center screen. 
			  Notice that if the collector pads have changed from a snow-white 
			  color to a dirty gray or black, it is time to remove and discard 
			  the two collector pads.   
			Brush any heavy dust accumulation 
			  from the outside screens with a soft cloth or the old pads. Insert 
			  two clean pads, making sure that they are well centered in the frame. 
			  Replace the center screen, close the air cleaner, and reposition 
			  the two clips, which hold the air cleaner together. Check that the 
			  two pads did not shift as you closed the air cleaner leaving gaps 
			  between the media pads and the edge of the air cleaner frame.  
			Replace the air cleaner in 
			  you heating/cooling system, reconnect the power cord, and observe 
			  that the light is "ON". 
		   |