This part is quite difficult as it seems like Philips intentionally made it hard to open

The part in red needs to come away from the base. The Motor Assembly is attached to this red part and comes out with it

There are 6 clips (in blue) which look like they undo by sliding the housing to the right

But there are two clips (in yellow) which do not allow you to slide the housing. You would need to pry these two clips upwards to allow you to slide the housing to the right