My bar is reading 0. I have undone the flap at bottom, retrieved key but when turning nothing seems to happen.. Am I supposed to do something else?? There doesn't seem to be instructions for this in the manual..

Jess, March 2008

you need to push the key up and it's almost like a two-phase push.
Then turn the key and it'll open the valve - turn the key until it stops.
It if just keeps turning, you haven't done the second-phase push.

Then turn the little white wheel which adds water to the system.
Add it slowly and monitor the pressure level - don't add TOO much so that the pressure gets too high.
Then turn off the wheel, and turn the key in the opposite direction to close the valve.
Pull the key out (which will bring a very small amount of water with it), and you're done.

Richard Mc, April 2008