Buchi DuMaster D-480, Operation Manual

Page: 228 / 354

Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
8 - Maintaining the instrument 228

Remove the quartz glass bridge. Hold the quartz glass bridge and detach the ground-in clamps.

Pull the combustion tube (4) and the post combustion tube (2) out of the furnace and place them
in the tube rack. After cooling down, remove the plug of the post combustion tube.

Pull the reductor (6) out of the furnace towards the top and place it in the tube rack. Lever out the
Reductor from the lower holder by means of a screwdriver. After cooling down of the Reductor
remove the top and bottom plug.

Place the tube rack on a level, non-combustible surface. Protect the hot parts from unauthorized
access.
Installing reaction tubes in the furnace and conditioning
Note
The following section is a continuation of Removing reaction tubes from the furnace. All steps
described there must already have been performed.
Process
The section is divided into the following phases:

Installing reaction tubes

Conditioning reaction tubes, getting the instrument ready to measure
Safety instruction
Strictly observe the safety instruction "Installing and conditioning the reaction tubes" under
Warning
notes during operation
(on page 24).
Requirements
Before starting work, the following requirements must be met:

The instrument must be in "Replace part" status. See instructions "Preparing the instrument: Gas
pressure" in Preparing and following up maintenance work.

The front door must be open and the furnace must be moved out.