BUCHI Inert Loop B-295 - Manual (Page 36)

5 Putting into operation
36 B-290 Operation Manual, Version I
a Tube to spraying nozzle
b Handle, pump bed
c Distilled water
d Flow meter valve
e Adjusting screw, pump bed
Fig. 5.12: Pump bed adjustment
1. Remove spraying nozzle from the Mini Sprayer B-290 and hold spraying nozzle into a suitable
container.
2. Insert tube a in to the pump bed.
3. Put tube on the suction side into distilled water c.
4. Close pump bed with handle b.
5. Unscrew adjusting screw e 1 turn.
6. Open the flow meter valve d to 40 mm.
NOTE
Distilled water c is now flowing through the tubing without the feeding pump running.
7. Turn the adjusting screw e in until the water flow stops.
8. Turn adjusting screw ¼ further in.
9. Close flow meter valve to 0 mm.
10. Install spraying nozzle back into the Mini Sprayer B-290.
Choose the feeding tube according to the following table. For short processes, even unsuitable tubes
can be used, as swelling takes some time.
Table 5-1: Choosing the feeding tube
Solvent Silicone tube Tygon MH 2075 Tygon F 4040 A
Methanol suitable suitable suitable
Ethanol suitable suitable suitable
Acetone unsuitable suitable unsuitable
Toluoene unsuitable unsuitable unsuitable
Isopropanol suitable suitable suitable
Chloroform unsuitable unsuitable unsuitable
Dichloro methane unsuitable unsuitable unsuitable
THF unsuitable unsuitable unsuitable
Ethylacetate unsuitable suitable unsuitable
Hexane unsuitable unsuitable suitable