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Step 3:
Close the Dust Bin, then open the Filter Compartment.
Step 4:
Take the Filter out, then tap the dust into a trash bin.
Tip:
The filter consist of a black sponge, a piece of white HEPA and the holder. You can wash
the sponge and holder, but can not wash the HEPA.
Step 5:
Place the Filter into the compartment, then insert the Dust Bin into the robot.