iRobot Verro 100 Product Manual - Page 12

 Adjusting the Time Control Dial The time control dial determines how long iRobot Verro travels in one direction before stopping and reversing direction. Adjust it so that Verro goes from the waterline on one side of the pool to the waterline on the other side at the widest point, waiting approximately two seconds on each side. Turning the time control dial clockwise lengthens the time between Verro reversing direction; turning the time control dial counter-clockwise shortens the time. Once the time control dial has been set to your satisfaction, it will not need to be adjusted unless you use a different type of filter bag. If Verro starts to consistently not reach the waterline, or starts moving more slowly, try cleaning the filter bag. 12 iRobot Verro Owner's Manual