11
3.3
Function of the Büchi Vac V-502
Vacuum system with PTFE diaphragm pump V-500 and vacuum
controller, suitable for controlled evacuation of laboratory
devices to a vacuum of <10 mbar. This system creates,
regulates, and maintains a vacuum at a constant level by
automatically resuming operation in the event of a vacuum
loss and restoring the vacuum to the set level. To achieve
this, the vacuum pump is turned on and off directly.
The vacuum, selected for the specific solvent, permits almost
100% condensation in the condenser of the distilling device.
This permits a massive reduction of solvent emissions. In
addition, the flow of the cooling water can be controlled during
the distillation process by an optional cooling water valve. 95%
of the cooling water can be saved in this way. The vacuum
controller turns the pump on and off as required by means of
the integrated switchbox.
Main switch
Pump inlet
Sound absorber
Vacuum Controller V-800
Valve unit
Holder
Stand
The sound absorber does not prevent emissions into the
laboratory air. For this reason, the pump must be placed
under a fume hood when the sound absorber is used.
Fig. 11: Vac V-502 with vacuum controller V-800
BÜCHI
Vac
V-500/V-501/V-502/V-503
3 Function
