iRobot Roomba 900 Owner's Manual page 26

EN
Regular Robot Care (Continued)
Cleaning Roomba's Cliff Sensors and Charging Contacts:
1
Wipe Roomba's Cliff Sensors with a clean,
dry cloth.
2
Wipe the charging contacts on
Roomba and the Home Base with
a clean, dry cloth.
24 Roomba 900 Series Owner's Guide
®
Cleaning Roomba's
Floor Tracking Sensor:
Turn Roomba over and use a clean, dry
microfiber or soft cotton cloth to wipe any
debris that has accumulated in the round
sensor opening on the right side of the
bottom surface. Do not spray cleaning
solution directly into the sensor opening.