Friedrich C-90B Manuale Utente

6

After the cell has been washed, check for broken ionizer wires 
and bent collector plates. If broken wires are observed, return 
unit to Authorized Warranty Station for wire replacement. If 
bent collector plates are observed, carefully straighten with 
a screwdriver or other fl at object. BE CERTAIN THAT NO 
TWO COLLECTOR PLATES ARE TOUCHING AS THIS 
WILL CAUSE ARCING AND PREVENT THE AIR CLEANER 
FROM OPERATING PROPERLY.

Remember that the electronic air cleaner has a cell key which 
prevents the cell from being positioned incorrectly. If the cell 

seems stuck when being inserted or the access cover will not 
fi t securely, check to be sure that the cell is being positioned 
properly. If excessive force is used, the cell or air cleaner unit 
could be damaged. Airfl ow arrows point toward fan motor.

If the cell is placed into the air cleaner while still damp, the 
indicator light may not come on until the cell is dry, which would 
normally take about two hours. If the cell is energized and 
annoying snapping sounds occur, the cell should be removed 
from the air cleaner and allowed to thoroughly dry.

In the event that you experience problems with the operation of your air cleaner, please...

•  Make sure electronic cell is clean, dry and properly 

installed.

•  Make sure pre-fi lter and carbon fi lter are both properly 

installed.

•  Make sure the top cover is properly snapped in place.

Make sure the supply cord is plugged 

into a standard household receptacle.

Make sure there is voltage to the re-
ceptacle by testing with another electric 
device.

Make sure the carbon fi lter is in place.

Make sure the top access cover is 
properly in place in order to actuate the 
interlock switch.  The interlock switch is 
provided for consumer safety and should 
never be bypassed.

No further corrective actions should be 
taken by the consumer.  Return the unit 
to an Authorized Warranty Station for 
repair.  See Page 12.

The activated carbon fi lter should be replaced when it is no 
longer effective in eliminating odors. The life of the carbon 
fi lter will depend on the concentration of odors and fumes 
in the air passing through the air cleaner. Under normal 

circumstances, the carbon fi lter should last up to six months. 
THE CARBON FILTER MUST BE IN PLACE FOR THE AIR 
CLEANER TO OPERATE.

This condition represents a failure of 
the air cleaner. Return the unit to an 
Authorized Warranty Station for repair.  
See Page 12.

Check the electronic cell to see if any 
of the collector plates are touching.  
Gently straighten and evenly space 
the plates.

Check the electronic cell to see if any 
of the ionizer wires are broken.  See 
Major Components for their location.  If 
broken wires are observed, no further 
corrective actions should be taken by 
the consumer.  Return the unit to an 
Authorized Warranty Station for repair.  
See Page 12.

•  Check fan motor and indicator lamp on all speed settings 

starting with low.

If your air cleaner still has any of the following problems, 
proceed step by step as shown below until no further action 
should be taken.