I have read some questions about cleaning the dryer (1, 2, and 3) but all answers deal with dryers with a venting system.
Mine, however, has no venting tube. Moreover, it is a washer-dryer (AEG, if the brand is needed).
Every time I use it I clean the filters, but the inside is not really accessible, nor the manual refers about cleaning it. My concern is about the grid you see on the right.
How can I properly clean it without harming it?