Buchi DuMaster D-480, Operation Manual

Page: 234 / 354

Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
8 - Maintaining the instrument 234
Drying tube filling (large)
The following picture shows the fillings of the drying tube:
Legend:
1 Empty space
2 Cotton (10 mm)
3 Sicapent® (314 mm)
Safety instruction
Strictly observe the safety instruction "Filling the drying tube" under
Warning notes during operation
(on page 24).
Filling the drying tubes
Proceed as follows:

Disconnect both tubes.

Remove the glass tube.

Detach the screw-on caps.

Leave approx. 5 mm space (1) at the end of the tube.

Plug approx. 10 mm of cotton (2) into the tube so that it comes to rest above the empty space
(3).

Fill in enough Sicapent® (3) to leave approx. 15 mm space at the top of the tube. To do so, tap
the tube wall with a piece of wood or cork so as to prevent cavities. If the Sicapent® cannot be
tapped properly, also a glass rod for slight compacting can be used.

Clean any Sicapent® off the end of the tube.

Plug approx. 10 mm of cotton over the Sicapent®.

Replace the screw-on caps and tighten them on the glass tube by hand.

Push the glass tube between the clamps and close the tubes.