Buchi Wet Digester B-440 Instrukcja Użytkownika Pobierz pdf (Strona 24)

6 Operation

24 B-440 Operation Manual, Version D

6.3 Setting up application parameters

Internal program storage

The B-440 is capable of storing 9 application methods in its program storage.s

Each program has 5 steps with individual parameter pairs of time and temperature.s

Parameter name Range

Programs 1 – 9

Steps 1 – 5

Temperature ambient – 600 °C

Time (per "STEP") 0 – 240 minutes

Setting up PROGRAMs and STEPs

Switch "ON" the Wet Digester. s

๗After the bootprocess (੠ 4 seconds) the instrument will be operational.

Select a program via the right "SELECT" button (below "PROGRAM" display).s

Press the left "SELECT" button (below "STEP" display) repeatingly to switch through every s

"TIME" / "TEMP" parameter of each "STEP" in a loop.

๗The "STEP" display shows the selected step (1—5 ).

๗The corresponding "TIME" / "TEMP" display will ﬂash for 10 seconds and switch to "STEP" level 1

without button action.

To change either the heating time or temperature of a step, use the "UP" and "DOWN" buttons s

while the respective display ﬂashes.

๗As soon as the display stops ﬂashing, the value is being stored.

NOTE

Some application methods do not require a full set of 5 steps. To disable a "STEP", set its "TIME " s

to 0.

During a running application, programming is not possible.s

6.4 How to perform a wet application

Digestion fumes can be hazardous and must be neutralized by a Scrubber or a condensate

trap / Scrubber combination. Fumes which may escape during operation must be safely withdrawn by

a fume hood! Wear personal protective equipment, see section 2.5 for general safety information!

WARNING

Death or serious poisoning by contact or incorporation of harmful substances and fumes at use.

Before operation, check the instrument for correct assemblings

Rinse condensate trap, hoses and connectors before uses

Before operation inspect sealing surfaces and tubes for good condition and tightnesss

Secure all hoses with hose clampss

Exchange worn out or defective parts immediatelys

Only operate the instrument in a fume hoods

Directly withdraw released gases and gaseous substances by a Scrubbers

Dispose of condensate in tubings and glassware safely after uses

Do not inhale digestion fumess

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Buchi Wet Digester B-440 Instrukcja Użytkownika Strona 24