Check the filtration system. First twist the filter cleaner 10 times to clean it
Empty the cyclonic cassette
Release the pleated filter and tap or brush to release dust. If it is still dirty, washing with luke warm water will suffice, but it should be left to dry if washed
The Cyclone unit can be removed for cleaning. Twist it clockwise to release it. Use the dusting brush to clean any dirt that may have accummulated in the cyclonic unit
To refit the cyclonic unit slide it inwards and twist anti clockwise to lock it in. Make sure the safety button is pressed down by the cyclone, in order for the cyclone to lock back in