iRobot 74520 Battery storage and charging, How to use the Lighthouse mode, User Interface Icons

How to use the Lighthouse mode

Simply place a Lighthouse in the doorway with the logo facing forward. When it has completed the first room the Lighthouse will help Roomba navigate around your home allowing it to clean room-to-room. When Roomba has completed cleaning, the Lighthouse will direct Roomba back to its Home Base for recharging.

You can use Lighthouses and Virtual Walls at the same time, but avoid placing them

too close to each other, to the Home Base, or to furniture that could block the invisible beams. Otherwise your Roomba might not recognize the Lighthouses or be able to return to Home Base.

How to use the Virtual Wall mode

In Virtual Wall mode, the Lighthouse creates an invisible barrier that your Roomba won’t cross. It automatically turns off when your Roomba is turned off.

Simply place the Virtual Wall Lighthouse in the center of the doorframe. Unlike a Virtual Wall, a Virtual Wall Lighthouse features a range selector that you can use to adjust the length of the barrier – up to 8 feet (2 meters) – (a longer range will drain the

battery faster).

Battery storage and charging

Your Roomba is powered by a rechargeable battery. Before using your Roomba for the first time, you’ll need to charge the battery overnight.

•Make sure your Roomba is fully charged before each cleaning cycle.

•For maximum battery life, always store your Roomba plugged in.

•When your Roomba is on the Home Base, make sure the Home Base power light is on.

•If you return your Roomba to the Home Base / battery charger after leaving

it off for a long time, it will start a special Refresh Charge mode and the battery indicator will pulse quickly. If possible, don’t interrupt the Refresh Charge mode.

•For long-term storage, fully charge the battery, remove, and store it in a cool, dry place.

How to remove your battery

If you won’t be using your Roomba for an extended period, we recommend that you remove the battery. To access the battery, turn Roomba over and remove the two screws that hold Roomba’s battery cover in place.

User Interface Icons

Icon	What does it mean?
	The Anti-tangle Indicator turns on while Roomba is freeing
	itself from a tangle.
	The Dirt Detect Indicator flashes when dirt is detected and
	persistent pass cleaning pattern is initiated.
	The Troubleshooting Light blinks when there is an issue
	(see pages 11 and 12).
	The Full Bin Indicator (models 770 and above) lets you know
	when the dust bin is full and needs to be emptied.
	The Battery Indicator shows the battery status.
	Solid red --- Battery drained
	Amber pulse --- Charging
	Solid green --- Fully charged
	Quick amber pulse --- Refresh Charge mode

Battery storage & charging Charging lights 5 6