[oldman]

I know this may be a dumbo question but.....
 when setting the cal of the V11 digital controller, do you have the water flowing at the brush or turned off?  .

[Ian Sheppard]

No such thing as a dumb question if you unsure.

You will need water flowing through the hose pole and brush. This video may be of help
http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL

[oldman]

Thanks very much Ian.

I can usually find the answers to my many questions by using the 'search' function....but not this time

Thanks again  .