You don't need to replace the filter every time it gets dirty. In fact, you'll want to clean the filter every week or so. At this point, you can clean the filter if you choose. To begin, tap the filter against the side of your garbage can to shake loose the dirt and debris. If you'd like, you can also spray the filter with compressed air or vacuum it to remove more of the dust.
To put the dust bin back in place, start by place the hook into the opening. If the hook is in place properly, it acts as a hinge. Then, you can push the other side of the dust bin and lock it into place.
With the dust bin back in place, your Roomba i7 is ready for action!