BUCHI Vacuum Pump V-710 - Manual (Page 16)

4 Description of function
16 V-700/710 Operation Manual, Version E
4 Description of function
This chapter explains the basic principle of the instrument, shows how it is structured and gives a
functional description of the assemblies and accessories.
4 .1 Vacuum pump
4 .1 .1 Functional principle
The Vacuum Pump V-700/710 serves to evacuate laboratory instruments down to 10 mbar respec-
tively 2 mbar pressure by means of a PTFE diaphragm pump. This pump is controlled by a variable
speed and single stroke technology.
It can be either used as stand-alone instrument or it can be expanded to a complete vacuum system
with optional accessories such as vacuum controllers and a secondary condenser.
NOTE
During a stable vacuum control irregular pump motor operation might be audible when the pump is
in the change over between speed control and Wankel operation. This is absolutely normal and does
not indicate a technical malfunction.
4 .1 .2 Front view
2
3
1
2
2
1
a Mains switch On/Off
b Glass window for viewing and checking the mem-
brane
c Carrying handle
Fig. 4.1: Front view of the vacuum pump