Buchi DuMaster D-480 User Manual download pdf (Page 191)

Operation Manual D-480 ©BÜCH Labortechnik AG

8 - Maintaining the instrument 191

 Place the ash crucible in the tube rack into the vent or else on a heat-resistant surface until it has

completely cooled down.

 Protect the hot ash crucible from unauthorized access.

 If there are any corundum balls sticking on the bottom of the ash crucible, top up some balls in

the combustion tube.

Installing the ash crucible

Note

The following section is a continuation of Removing the ash crucible (on page 188). All steps

described there must already have been performed.

Process

The section is divided into the following phases:

 Installing the ash crucible

 Follow-up instrument preparation: Gas pressure / gas-tightness

Safety instruction

Strictly observe the safety instruction "Replacing the ash crucible/finger" under Warning notes

during operation (on page 24).

Requirements

 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).

 Keep a tube extractor ready.

 Keep a filled ash finger ready. See Filling the combustion tube (on page 222).

Top view furnace

The following picture shows a top view of the furnace pulled out:

Legend:

1 Post combustion tube plug

2 Post combustion tube

3 Combustion tube connection

4 Combustion tube

5 Reduction tube plug

6 Reduction tube

Phase 1: Installing the ash crucible

Proceed as follows:

1 ... 190 191 192 ... 356

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Buchi DuMaster D-480 User Manual Page 191