BUCHI Syncor Polyvap - Manual (Page 23)

Syncore ® Accessories
version E 21
3.4 Vacuum covers
Introduction
The vacuum connection is used in conjunction with a sui-
table vacuum source in order to place the sample tubes
in a rack under a vacuum. For this reason, the vacuum
connection is connected to the vacuum source by a cooling
unit, then positioned against the test vessels in the rack
and, finally, screwed down.
Each sample tube is sealed off across its own individual
connection a. The seal is made with plastic sealing discs
with a PTFE-coating.
Solvent vapors are directed into the vacuum connection
separately from each glass and sent from that point via
collection channels b to a central steam duct c. This
duct is connected to an inert, pressure-resistant hose
made of PFA d which directs the solvent vapors on to a
cooler. To prevent condensation of the solvents within the
vacuum connection, the vacuum connection is heated.
The maximum temperature that the vacuum connection
can reach is 70 °C.
The settings in the single platform must make provision for
the vacuum connection. The eccentricity of the shaking mo-
vement and the unbalance compensation must be adjusted
to the rack being used and the vacuum connection. An
incorrect eccentricity or unbalance compensation can result
in damage to the single platform or laboratory equipment,
or may cause personal injuries (refer also to the Operating
Instructions relating to the Syncore Platform).
Connections
Vacuum connection
Connect the vacuum hose to the vacuum connection.
The vacuum hose itself is joined directly to the adapter on
the condenser unit.
The vortex shaking movement of the rack sets the vacu-
um hose into a rotating movement along with the vacuum
connection. The vacuum hose must not come into contact
with or rub against other parts of the unit. There should be a
slight fall between the vacuum connection and the adapter
on the condenser unit.
Figure 23: Vacuum Cover
a
b
c
d
3 Function,putting into operation, operation and maintenace