12
Fig. 12: Vac V-503
3 Function
BÜCHI
Vac
V-500/V-501/V-502/V-503
3.4
Function of the Büchi Vac V-503
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. The
vacuum controller turns the pump on and off as required by
means of the integrated switchbox. The secondary condenser
removes any solvent vapors following the pump. 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.
Main switch
Pump inlet GL-14
Pump outlet GL-14 – connect to secondary condenser
using vacuum hose (see 3.5)
Secondary condenser
Collecting tank
Vacuum Controller V-800
Valve unit
Holder
Stand
Elastic ring
3.5
Function of the secondary condenser
Cooling water inlet
Cooling water outlet
Intake for exhaust gases from the pump
Outlet for exhaust gases
Assembly:
•
Mount gasket in holding ring
•
Click holding ring into white holder
•
Place the supporting ring on the holding ring and secure
the secondary condenser by pressing down lightly and
turning 60°.
•
Mount collecting tank
Fig. 13: Secondary condenser
