iRobot Roomba Discovery Series 400 Series User manual

Dear iRobot Roomba Owner,
Thank you for purchasing an iRobot Roomba vacuum cleaning
robot. You’ve joined the millions of people who clean with robots -
the smarter way to get it done.
Please take a few moments to read this manual and get acquainted
with your Roomba, to get the best performance from your robot.
If you have any questions, visit our website at www.irobot.com for
more information.
Register your robot to instantly activate your warranty and enjoy
these exclusive benefits:
• Take advantage of iRobot’s award-winning customer service
Get support tailored to your specific robot, including answers
to questions, maintenance tips, video demos, live chat and
more.
• Get product updates and other valuable information
Be among the first to find out about new robots, exclusive
discounts and special promotions.
When you register, you can also tell us about your experience
with your Roomba; iRobot listens to our customers and makes
enhancements to our robots based on your valued feedback. We’d
love to hear from you!
Register your robot right now at www.irobot.com/register.
On behalf of the entire team, thank you for choosing iRobot; we
appreciate your business, feedback and loyalty.
Here’s to robots that make a difference!
Yours for less chores and more life,
Colin Angle
Chairman, CEO and Co-Founder
iRobot Corporation
P.S. Don’t miss out on your exclusive benefits! Register your
Roomba online right now at www.irobot.com/register.

For more detailed information, visit: www.irobot.com 3
Important Tips
Roomba contains electronic parts. DO NOT submerge Roomba or spray it
with water. Clean with a dry cloth only.
For Best Performance
• Remove and clean Roomba’s brushes after every use.
• Empty Roomba’s bin and clean its lter after every use.
• Use a Virtual Wall®(optional accessory) to keep Roomba cleaning where
you want it.
• Use your Roomba frequently.
Battery Life
To extend Roomba’s battery life and keep Roomba cleaning at peak
performance:
• Always keep Roomba plugged in when not in use.
• Recharge Roomba as soon as possible. Waiting several days to
recharge Roomba can damage the battery.
• For storage off the charger, remove the battery from Roomba and store
in a cool, dry place.
• Blue or black batteries should be stored after Roomba has been
used.
• Yellow batteries should be stored after being fully charged.
Turning Roomba on and off
• Roomba does not have a power button.
• To turn Roomba ON, press CLEAN once. You will hear a
beep and the CLEAN button will be lit.
• To start a cleaning cycle, press CLEAN again. Roomba will
start a cleaning cycle.
• To pause Roomba, press CLEAN while Roomba is cleaning.
• To turn Roomba OFF, press and hold the CLEAN button
until Roomba’s lights turn OFF.
• To resume the cleaning cycle, press CLEAN again.

4 iRobot Roomba Owner’s Manual
Table of Contents
iRobot Roomba Anatomy.............................................5
Cleaning Pattern...........................................................6
Cleaning Modes............................................................6
Cleaning System...........................................................7
Battery Storage and Charging ............................... 8 - 9
Virtual Wall (optional accessory)................................10
Remote Control (optional accessory)........................11
Maintenance ...................................................... 12 - 13
Troubleshooting..........................................................14
important Safety Instructions ....................................15
iRobot Customer Care ...............................................16

For more detailed information, visit: www.irobot.com 5
iRobot Roomba Anatomy
Virtual Wall Sensor
Bin Release
Button
Battery Charger
Socket
Bottom View
Cliff Sensor
Openings
Edge-Cleaning
Side Brush
Vacuum Inlet
Replaceable
Caster Wheel
Battery
Flexible
Brush
Brush Guard Release Tabs
Brush Bearings
Brush
Guard
Main
Brush
Brush Caps
Serial Port
Bin
CLEAN/Power
Button
SPOT Button

6 iRobot Roomba Owner’s Manual
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 efcient cleaning, clear your oor 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.

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Cleaning System
Roomba features a patented three-stage cleaning system.
Floor Surfaces
Roomba works on wood, carpet, tile, vinyl, and linoleum, and adjusts
automatically to different floor types.
Roomba automatically senses stairs and other cliffs. Roomba is not
recommended for shag carpet or rugs with tassels.
1
Side brush
sweeps along
edge of walls and
into corners.
2
Two counter-
rotating brushes
scoop up dirt,
hair, and debris
into the bin.
3
Powerful vacuum picks up the
remaining fine particles, dirt, and
hair. The filter traps dust and
small particles.
Filter

8 iRobot Roomba Owner’s Manual
Battery Storage and Charging
TIP: For best performance, charge Roomba’s battery overnight before using
Roomba for the first time.
Roomba is powered by a rechargeable battery.
Roomba’s battery can last for hundreds of
cleaning cycles if cared for properly.
Battery Life
To extend the battery life, iRobot recommends always storing Roomba
plugged in. For more details on how to maintain Roomba’s battery life,
visit www.irobot.com/support.
TIP: Recharge Roomba as soon as possible. Waiting several days to recharge
Roomba can damage the battery.
TIP: For storage off the charger, remove the battery from Roomba and store in
a cool, dry place.
Cleaning Time
You should fully charge Roomba’s battery before each cleaning cycle.
When fully charged, Roomba’s battery will last for at least one full clean
cycle.
16-Hour Refresh Charge
If Roomba has been left off the charger for an extended period, Roomba
will initiate a special 16-hour charge cycle. This extensive charge
refreshes Roomba’s battery and extends the battery life. While charging,
Roomba’s “Clean” button will pulse quickly. Note: For best results, do not
interrupt this Refresh Charge.

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Charging Lights
Roomba uses the CLEAN button light to indicate that it is charging. Use
the chart to determine that status of the battery.
CLEAN/Power
Button
CLEAN Button Light Battery Status
Solid red Battery empty
Amber pulse Charging
Solid green Fully charged
Quick amber pulse 16-hour refresh charge
Charging Roomba
Charge Roomba by plugging the charger directly into Roomba’s battery
charger socket.

10 iRobot Roomba Owner’s Manual
Virtual Wall (optional accessory)
Virtual Walls create an invisible barrier that Roomba will not cross. This invisible barrier
can be used to confine Roomba to a particular room or area, and prevent it from
getting too close to electrical or computer cords, delicate objects on the floor, etc.
The Virtual Walls can be set to block an
opening up to seven feet long. Note that
the width of the Virtual Wall’s beam also
increases as its length increases, creating
a cone-shaped area which Roomba cannot
pass. The Virtual Wall also creates a halo
of protection around itself, preventing
Roomba from getting too close.
Manual Virtual Wall (selected models)
A Manual Virtual Wall must be turned on by
hand at the beginning of the cleaning cycle to
activate the barrier. A Manual Virtual Wall (and
its power light) will shut off after 135 minutes.
Auto Virtual Wall (selected models)
When an Auto Virtual Wall is set to “Auto”
mode, the power light blinks repeatedly to
indicate it is on. When battery levels are low, the
Virtual Wall blinks repeatedly twice to indicate
that it needs new batteries. To save battery
power, the Auto Virtual Wall can be switched
to “Off”. When in “Auto” mode, the batteries
should last approximately six months.
TIP: Point the arrows on top of the Virtual Wall towards the opening you
would like to block.
TIP: For best performance, place the Virtual Wall on the outside of the
doorway you wish to block.
Two “C” Alkaline Batteries
(not included)
Battery Compartment
Battery Installation
OFF
AUTO