There are no screws at either the front or the back! I also tried pushing the top back to see if it had spring clips holding it. There is about 3mm of free movement rearwards, but it is then solid.
There is a charcoal grey moulding under the top which will lift upwards about 8mm. at either side of this moulding are 2 downward projections which are part of the moulding. The whole of it moves upwards together. But it releases nothing. I can still move the top the same 3mm forward and back, but there is no vertical movement at the front or the back. outside of the grey projections are white plastic 2-part mouldings which are ribbed. One part of which seems to be slotted into the rear metal panel of the casing. This is why I thought that it should knock rearwards to release it. I am mystified as my design and engineering background is not suggesting anything to help me. It must be a simple thing !
Is this clear?
Yes! Not as simple as it sounds, but with quite a lot of upwards pressure it released. There was no slot to insert the screw driver into but using the screwdriver to exert pressure upwards on the middle part of the 2-part white plastic moulding on either side, it released instantly. Thanks!
The problem with the machine is that small particles of matter which get through the filters, blocked up the fine capillary tubes which are supposed to be air tubes to operate the micro switches to control the wash & rinse cycle. Located in the side panel, leaves very little room for it. It is not the best of design principles, in my opinion. Thanks again.