Side Brush * Monthly cleaning is recommended Sensors and Charging Contacts 1. Flip the vacuum-mop over, then gently pull out the side brush as shown in the diagram below to clean it. 2. Reinstall the side brush. Use a soft cloth to clean all senors and chraging contacts in the vacuum-mop : · The four cliff sensors on the bottom. · The charging contacts on the bottom. · Optical sensor on the bottom of the vacuum-mop. · The infrared deceleration sensor on the front. Note: It is recommended to clean the side brush monthly and replace every 3 to 6 months. Cliff Sensor Charging Contacts Optical Sensor Infrared Deceleration Sensor 13