BUCHI Extraction Unit E-816 HE - Manual (Page 25)

5 Putting into operation
25 E-812/816 Hot Extraction Operation Manual, Version B
Fig. 5.3: Cooling water connection with mounted chiller connection set
Before starting an extraction make a test start to fill the condensers as the flow control unit for
cooling water gets no signal until all condensers are filled. Fill the condensers with cooling medium as
described in the chapter “Cooling water connection”.
5 .7 Solvent hose connection
Fix the solvent hose to the solvent connection on the left of the instrument by pushing it on the
connector and tightening the knurled screw.
Fig. 5.4: Solvent hose connection
The solvent hose consists of two parts, a transparent Tygon hose (with FEP veneer) and a white PTFE
hose. The PTFE hose is solvent resistant, thus it has to be inserted into the Tygon hose.
NOTE
Only the PTFE hose must come into contact with solvent, see picture below.