Alen A350 User Manual

17

HOW TO CLEAN ANd MAINTAIN YOUR AIR PURIFIER 

1) A. With the front of the unit facing up, pull the lower end of the inlet grill.

  

 

  (A350, A375UV)

 

    B. Release the inlet grill by pressing from the locking switch and pull forward.  
 

  (T300, T100)

)  Remove the inlet grill from the unit.

3) A. Remove the HEPA filter by lifting the pull string. 

(A350, A375UV) 

    B. Grasp the right and left frame of the filters through the recess on the side of the  

 

 

  filter enclosure, and remove the filters. (T300, T100)

4)  The pre-filter can be removed from the HEPA filter for cleaning, after cleaning the  

 

 

pre-filter can be reused. 

5)  Clean the pre-filter after every 200-300 hours of use, or you can clean it accord 

 

 

-ing to the air condition on the room. The pre-filter can be cleaned with a vacuum  

 

 

or by washing.

6)  Clean the inlet grill after 00 - 300 hours use, or you can clean it according to 

TROUBLE SHOOTING 

Problem

Reason

Solution

Unit will not operate

1) ON/OFF button has not been pressed. 
) Unit is unplugged.
3) The inlet grill has not been installed or 
locked into place.

1) Press the ON/OFF button.
) Check to make sure the unit is plugged in.
3) Check to make sure the filters are prop-
erly installed and the inlet grill is installed 
and locked into place.

Reduce air flow or 

poor filtering

1) The inlet or outlet grill may be blocked 
2) The HEPA filter may be clogged

1) Make sure nothing is in front or at the 
back of the air purifier.
2) Check the filter and the HEPA filter re-
placement indicator and replace if necessary.

The HEPA indication 

bars are still lit after 

the replaced

1) The unit has not been reset.

1) Turn on the unit, then insert a small object 
(such as a pin or a paper clip) into the hole 
marked RESET until the indicator is off.

Warning: Prior to cleaning or other maintenence, this appliance must be 

unplugged from the power supply.