Buchi DuMaster D-480, Operation Manual

Page: 221 / 354

Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
8 - Maintaining the instrument 221
Emptying reaction tubes
Requirements:
Before starting work, the following requirements must be met:

The reaction tubes have been removed from the furnace.

The reaction tubes have cooled down.

Keep a tube extractor ready.
Safety instruction
Strictly observe the safety instruction "Emptying the reaction tubes" under
Warning notes during
operation
(on page 24).
Emptying the combustion tube
Proceed as follows:

Insert the tube extractor into the combustion tube. After clamping the crucible tongs in the ash
crucible, pull the ash crucible out.

Empty the ash crucible.

Empty the copper oxide out of the combustion tube.

Remove the wire mesh ronde and the spacer out of the combustion tube.

Remove the CuO dust out of the combustion tube by means of a damp cloth.

Dispose of the chemicals according to the relevant disposal categories.
Emptying the post combustion tube
Proceed as follows:

Remove the brass wool out of the post combustion tube plug. Usually, the brass wool has turned
to discolored and is used-up.

Remove the Regainer.

Remove the corundum balls.

Remove the CuO and the Pt catalyst.

Remove the corundum balls.

Remove the wire mesh ronde and the spacer.

Remove the CuO dust and, if applicable, the crust of salt by means of a damp cloth.

Dispose of the chemicals according to the relevant disposal categories.
Dispose of the Reductor
Proceed as follows:

Dispose of the Reductor to the relevant disposal categories.
Filling the combustion tube
Note
Note the following rules:

Observe the filling heights indicated as exactly as possible.