BUCHI Extraction Unit E-816 SOX - Manual (Page 24)

5 Putting into operation
24 E-812/816 Soxhlet Operation Manual, Version B
5 .6 Cooling water connection
Connect the cooling water to the cooling water input a. The cooling water hose has to be secured
on both the instrument and the water connection side by means of hose clamps. The water pressure
should have a maximum of 4 bar. The built in valve reduces the water flow to 1.2 liters per minute.
The flanged screw coupling for the water connection has a standard screw thread of G 3/4“.
1
2
a Cooling water input
b Cooling water output
Fig. 5.3: Cooling water connection
Fix the silicon hose to the cooling water output b. The drain hose for the cooling water should be
placed directly into the drain. For this purpose, shorten the silicone hose to the optimal length. The
drain hose should not show any kinks, sharp bends and/or siphoning effect. Prevent flooding inside
and outside the instrument by securing the drain hose.
Check the cooling water hoses for bends.
To save water the instrument switches off the flow 5 minutes after the extraction has ended.
NOTE
The condensers can be filled with cooling medium in the Service mode. In this case, proceed as
follows:
• Change to the service mode (click Menu, go to Mode and change from Extraction to Service, then
confirm with OK).
• Open the cooling medium valve (click Menu, go to Service functions, then to Valve testing, select
Cooling water and press Open).
• Open the cooling medium flow (open the water tap).
• After all condensers are filled with cooling medium, close the valve again and set the instrument
back to the Extraction mode (click Menu, go to Mode and change from Service to Extraction, then
confirm with OK).
NOTE
The temperature of the cooling water must be at least 25 °C below the boiling point of the organic
solvent used. If this is not possible use a chiller.