OK, I have a Pisa Bristan mixer shower. The shower, when turned to it's hottest setting, produces luke warm water, despite water from the tap being much hotter. I suspect that the mix of hot to cold water is not good even when I have turned the shower up to it's hottest.

This is a permanent thing, and isn't because I have no hot water, or have just flushed the toilet etc.

I remember reading somewhere that it's possible to recalibrate the shower so that when it is set to hot it has a better hot to cold ratio. Google tells me that there is a cassette inside that is "factory set" to 42 degrees (or something). I somehow need to set this to be hotter, or to increase the mix of hot to cold.

Does anyone know how to do this?

Bristan Spares - Bristan Shower Spares - Bristan Spare or Part

£89.07 for the new cartridge when I don't even know for certain that that's the problem?!

There was a faq and a manual on that page [smilez]