iRobot DISCOVERY 400 - Manual (Page 11)

For more detailed information, visit: www.irobot.com 11
Cleaning Pattern
Roomba is a robot that cleans floors differently than the way most people
clean their floors. Roomba uses its robot intelligence to efficiently clean
the whole floor, under and around furniture, and along walls.
Roomba calculates the optimal cleaning path as it cleans and determines
when to use its various cleaning behaviors.
Spiraling: Roomba uses
a spiral motion to clean a
concentrated area.
Wall Following: Roomba uses
this technique to clean the
full perimeter of the room and
navigate around furniture and
obstacles.
Room Crossing: Roomba
crisscrosses the room to
ensure full cleaning coverage.
TIP: For most efficient cleaning, clear your floor of clutter and use a Virtual
Wall to confine Roomba to one room.
TIP: Roomba takes approximately 25 minutes to clean an average room and
will pass over the same area of the floor multiple times to ensure total
floor coverage.
Cleaning Modes
Roomba will clean based on the cleaning mode you select. Roomba has
two cleaning modes:
Clean Mode
Roomba automatically calculates the room size and adjusts its cleaning
time appropriately.
Spot Mode
Roomba will spiral approximately three feet in diameter and then spiral
back to where it started, intensely cleaning a localized area.