3B Scientific Piston Vacuum Pump - Manual (Page 4)

Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany • www.elwedidactic.com
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments.
© Copyright 2010 3B Scientific GmbH
4. Sample experiment
4.1 Propagation of sound waves in air
In order to conduct this experiment, the following
apparatus is additionally required.
1 Vacuum cylinder U8421230
1 Base plate U8421225
1 Electric doorbell U21854
1 AC/DC Power Supply U33030
Experiment leads
5. Maintenance
Make sure that the sealing rings are always prop-
erly lubricated. To do so, carry out the following
steps:
• Unscrew the lid and remove it along with the
piston. If necessary, clean and lubricate these
components.
• While reassembling, insert the piston properly.
Make sure that the components are assembled
to fit perfectly before screwing them on (also
see the instructions printed on the pump).