BUCHI Extraction System B-811 LSV - Manual (Page 31)

5 Putting into operation
31 B-811 Operation Manual, Version G
5 .5 Connecting to tap water
a Cooling water outlet
b Nitrogen connection
c Cooling water inlet
Fig. 5.2: Rear view of the B-811
The water pressure may have a maximum of 6 bar (operating pressure 2 - 6 bar).
The screw cap nut of the water connection has an R 1/2” standard thread.
The counterpressure at the cooling water outlet may be at a maximum of 0.5 bar.
Connect the cooling water hose (order number 04113) to the cooling water inlet c and the cooling
water hose (order number 04134) to the outlet a.
NOTE
The temperature of the cooling water must be at least 20 - 25 °C below the boiling point of the •
solvent. If this is not possible, you will need to use a refrigerated circulation.
When using a refrigerated circulation, you should note that the coolant pump will have to work
•
against a closed valve.
Check the cooling water hoses for bends.
The cooling water valve is closed by the software 15 minutes after the program has been completed.
5 .6 Inert gas connections
ATTENTION
The applied pressure should not exceed 3 bar. A larger flow of the inert gas causes exessive loss of
solvent.
The inert gas can be connected using the hose provided. The connection is removed by pressing the
black ring and pulling out at the same time.
Typical pressure to supply four positions in operation is a maximum of 3 bar at the beginning, which
may be reduced to 1 - 2 bar during operation.