Neff Dishwasher – How do I access the Main Pump?

I have a Neff S54M45x5GB/01 Dishwasher. It is just over 2 years old ( out of warrenty) but has only been used about 50 times.

With the side panels off I can see that water collects in the base ( but it appears to only do it on emptying ) until the float switch is activated. There is approximately a mug full of water each time. Just enough to activate the float but not enough to flow out onto the floor.

Unfortunately I cannot see where the leak is coming from and I cannot seem to see how to remove the whole solid plastic base ( which acts as a trough ) to gain access to the main pump.

I would have thought that gaining access to the main pump would be fairly straightforward for maintenance purposes. If I turn the machine completely upside down will I then be able to remove the whole of the base without having to unscrew any other individual componants or touching the door counter balance assembly?

How can I remove the whole plastic base from the machine and do I have to turn the machine completely upside down to achieve this result?

Any help would be appreciated!!