Try this
LG CordZero R9 - How to clean the nozzle
1. Place a soft blanket on the floor and place the robot vacuum cleaner upside down on it.
2. Press the Separate button for the rotating brush on the left to the nozzle to separate the rotating brush and the cover from the main body.
3. Remove dusts and large foreign objects at the nozzle.
4. Press the Separate button for the trash bin to separate the dust bin from the main body.
5. Using a straw or bending stick, push dusts or large foreign objects blocking the dust nozzle into deep and remove them.
6. Remove dusts and foreign objects coming out of the nozzle.
7. After assembling the dust bin, press the main body cover until you hear the clicking sounds.
8. After closing the rotating brush cover, press it until you hear the clicking sounds.
This guide was created for all models, so the images or content may be different from your product.