Here is the instruction:

1. Before mopping, install the waterproof pad under the Charging Base to protect the floor. 
2. Roll up your carpets. For G20 Hybrid and G30 Hybrid,  you can block your carpets with boundary strips (G10 Hybrid does not work with boundary strips).
3. Wet the mopping cloth and wring it until it does not drip. Insert the cloth along the bracket slot and stick it firmly. 
4. Open the water inlet cover to fill in water, then seal the rubber cover. Do not use hot water or a non-eufy cleaning solution.
5. Slide the water tank under the robot until it clicks in place. 
6. Select a cleaning mode to start cleaning. RoboVac automatically sweeps and mops at the same time.
7.  When RoboVac finishes working, press the dust collector release button to remove the dust collector and the water tank. Then you can empty the dust collector and any unused water in the water tank, and wash the mopping cloth. This is to prevent the cloth from becoming mildewed or producing a peculiar smell. 

Notes:

• The mopping mode is not recommended when no one is at home. 

• The mopping mode is only intended for a clean floor without stubborn stains. To achieve a better mopping effect, it is recommended to clean the floor with RoboVac three times before installing the mopping module.

• Remove the water tank when RoboVac is charging or not in use.