ECOVACS DEEBOT T20 OMNI Instruction Manual page 26

Maintain OMNI Station
Press and hold the button for 5 seconds
1
to add water to Cleaning Sink
2
Clean Cleaning Sink
EN 26
Press and hold the button for 5 seconds
3
to drain the water out of Cleaning Sink
4
Empty Dirty Water Tank
5
Clean the Clean Water Tank Filter