Air outlet and Fan.
(before cleaning, make sure that the fan is stopped)
Firstly, turn the horizontal vanes downward. Then, remove the upper vane as shown in ➀ and ➁.
Then, swing out the two vertical vanes one by one.
Next, clean the air outlet and fan.
Now, put the vertical vanes back to their original positions correctly one by one, into their respective guide.
Lastly, install the horizontal vanes by following the removal procedure in reverse.