BUCHI DuMaster D-480 - Manual (Page 229)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 229
 Remove the quartz glass bridge. Hold the quartz glass bridge and detach the ground-in clamps.
 Pull the reduction tube (6), the combustion tube (4) and the post combustion tube (2) out of the
furnace and place them in the tube rack.
 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 (on page
227). 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 (on page 171).
 The front door must be open and the furnace must be moved out.
 Clean off all fingerprints on quartz parts before installing them. This prevents premature ageing of
quartz parts. Use acetone, for example, for cleaning.