My Aqualisa Aquastream power shower (fitted approx 10 years ago) has started leaking through the on / off nob. It works fine otherwise. Can I repair this myself and is there a manual to guide me as to how to do it / what parts need replacing?

Brian Scott, May 2007

The cartridge requires replacing. Easy to do by pulling off the knob and unscrewing the front of the unit (screws at the top and bottom). There is no need to remove the shower from the wall.
See the Shower Doctor on the internet to see the parts list and to order a new cartridge. Replacement from this point is still easy to do by removing any parts in the way and then the main screw(s) for the cartridge.
Remember to turn off the water first and run the shower to pump out the water in the pipes!

Martin Albericci, May 2007