14English
AC4074 only:The corresponding fan speed light in the fan speed indicator goes on.
Note: Select boost power if you need an extra strong airflow when the air in the room is very dirty. All three fan speed lights go on.
Silent mode
When you use the appliance in silent mode, it operates very quietly.
1Press the on/off button to switch on the appliance.
2 Press the SILENT button to activate the silent mode. 
The SILENT light goes on.
If you want to go back to the FAN SPEED mode or AUTO mode, simply press the FAN SPEED or AUTO button.
Cleaning
Always unplug the appliance before you clean it.
Never immerse the appliance in water or any other liquid.
Never use aggressive or flammable cleaning agents such as bleach or alcohol to clean any part of the appliance.
Only the
Body of the appliance
Regularly clean the inside and outside of the body to prevent dust from collecting on the inside and outside.
1Wipe away dust with a soft dry cloth from the body of the appliance.
2Clean the air inlet and the air outlet with a soft dry cloth.
Pre-filter
The
