17
EN
Always lock the valve cover over the valve stem when
in use. This will prevent accidental air release and
entrance of any particles into the air chambers.
Important note on the valve
Sometimes air escapes from the
board because the valve is not
properly closed. For this there is a
special tool to retighten the valve.
Retighten the valve at least once a
year:
1 First let the air out of the board.
2 Reach under the board with
your right hand and hold the
valve from below.
3 Take the key in your left hand,
place it on the valve and tighten
the valve clockwise.
