1. Power off the robot and take out the dust box.
2. Open the blue cap of the water tank, and pour in a proper amount of water, tightly lock the cap , make sure it does not leak water.
3. Install the water tank as instructed, power on, and use mopping function on app or remote control.
Note: Please do not use mopping function on your carpet or rugs, otherwise it will get stuck on the carpet.