BUCHI DuMaster D-480 - Manual (Page 201)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 201
 Remove the ball and top half shell by means of the "knock-out".
 Loosen and remove the bayonet catch.
 Press the lower half shells out of the ball valve casing by means of the "knock-out".
Cleaning, assembling and installing the ball valve.
Note
The following section is a continuation of Removing and dismantling the ball valve (on page 197).
All steps described there must already have been performed.