Buchi DuMaster D-480, Руководство по эксплуатации

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Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
6 - Starting up and shutting down the instrument 108

Install the required parts. Leave the tube outlets open for subsequent conditioning. Used tubes
also need to be conditioned. See

Installing reaction tubes in the furnace and conditioning.

Removing and installing the drying tube.
The instrument is now ready for switching on.
Phase 2: Instrument must be ready to measure
Proceed as follows:

Perform all steps of the switching on process. See
Switching on
(on page 112).

Switch on the operating gases. See Default instrument settings for recommended gas pressure.

Launch the operating software. The standard operating parameters are factory-set. See
Starting
the operating software
(on page 128).

Heat up the furnace.
See Heating up the furnace
.

Condition the reaction tubes. See Installing reaction tubes in the furnace and conditioning.

Define the main settings for measurement. See
Measurement settings
(on page 118).
The instrument is then ready to measure.
Phase 3: Performing instrument checks
Proceed as follows:

Perform a leak test. See Performing a leak test.

If the leak test reveals any leaks, eliminate them.

Condition newly installed and used tubes. For used tubes, humidity must be eliminated by baking
them out for at least two hours. See Installing reaction tubes in the furnace and conditioning.

Check proper working order of the instrument by means of

Blank value determination

Conditioning measurement

Standard measurement
Observe gas flows and pressures. See Performing routine measuring work.

After routine measuring work you can measure real samples. See
Performing measurement
work
(on page 134).
Connecting peripherals
Note
The following section is part of initial start-up. All steps described in initial startup before connecting
peripherals must have already been performed. See Start-up.
Peripherals

A PC must be connected. It is essential for operation.

A printer should be connected so that you can print out measuring results.

A balance should be connected, so you do not need to enter the sample weight by hand.