Easing the robot

If the vacuum cleaner does not work below 7 m3 of pump power (even if presented to operate from 4.5) simply lighten a little, for example by fixing a plastic bottle partially filled the connection of the device with a distance of 10-20 cm not to impede movement, dose the filling of the bottle according to the size and depth, after a few tries the robot will move while remaining at the bottom. This concerns the new model 28001 white and blue.