if you take the lid off..you will see a red round looking sort of disc at the rear right hand side...it will have a small pipe leeding to it...remove the pipe and blow through it as hard as you can..it may take a good blow before you feel it pop this will sort it for you....a little tip that worked for me after having to do this nearly every 2 weeks was stop using powder and go on to liquid!!!
shaun, October 2008
