BUCHI Extraction System B-811 LSV - Manual (Page 38)

6 Operation
38 B-811 Operation Manual, Version G
Function key Display Description
Display STEP 2 blinks (STEP 2 = Rinsing) Only the lower heating elements are activated
Display HEATING
blinks
Select the heating level (1 - 20) using the / keys
Select level 13 for toluene
In case of oxygen-sensitive analytes, the gas supply must be
activated by pressing the INERT GAS key
The inert gas valve is automatically opened up while the step
starts
Display H: MIN blinks Select the rinse time (0 to 99:99 h) using the / keys
The only stop criterion used for STEP 2 is the rinse time
Display STEP 3 blinks (STEP 3 = Drying)
Display HEATING
blinks
Select the heating level (1 - 20) using the / keys
Select level 4 for toluene
Display H: MIN blinks Select the drying time (0 to 99:99 h) using the / keys
The only stop criterion used for STEP 3 is the drying time
In case of oxygen-sensitive analytes, the gas supply must be
activated by pressing the INERT GAS key
The inert gas valve is automatically opened up while the step
starts
SELECT No display blinks The entered program is stored as program 0
To store this program under a different program number, please
see chapter 6.7
6 .5 Hot Extraction Mode - programming example
Program description:
This program carries out a Hot Extraction according to Randall and Goldfisch. In case of a Hot Extrac-
tion the sample is placed into the boiling solvent and extracted. The optical sensor detects the solvent
level in the extraction chamber, the magnetic valve is opened and a few milimeter of solvent are
drained. At the same time fresh solvent is constantly condensing at the condenser and collected in the
chamber. Solvent: toluene, for other heating levels see chapter 6.11.
Function key Display Description
SELECT The Mode display
blinks
Select the Hot Extraction Mode using the / keys
Display STEP 1 blinks (STEP 1 = Extraction)
Display HEATING
blinks
(The symbol for the upper heating element lights up)
Select the heating level (1 - 10) using the / keys
Select level 6 for toluene
Display HEATING
blinks
(The symbol for the lower heating element lights up)
Select the heating level (1 - 20) using the / keys
Select level 13 for toluene