BUCHI Syncor Polyvap - Manual (Page 26)

Syncore ® Accessories
24 version E
Glass plate
The glass plate lets the operator observe the vacuum zone
inside the vacuum connection. The operator can at all times
see any spraying in one of the positions or any condensation
that is occurring.
A vacuum connection must never be used if the glass has
been damaged. Glass plates that are cracked or whose
edges have splintered off could shatter under the vacuum
and cause material damage and personal injuries.
Empty positions in the rack
Whenever you do not need all of the positions in the rack,
you can proceed as follows:
• Fill all the positions in the rack with sample tubes. The
empty sample tubes do not affect the evaporation of
the other positions (exeption: Rack Analyst).
or
• Use only those sample tubes that contain samples.
Seal off the individual empty connections in the vacuum
connection that do not have a sample tube with plastic
plugs (refer also to chapter „Replacement Parts“).
(Not valid for the rack R-4)
There must always be sample tubes in the corner positi-
ons of the rack. A symmetrical arrangement of the tubes
is necessary in order to ensure an even distribution of the
contact pressure in the vacuum connection.
Setting up the vacuum connection
Mount the rack containing the sample tubes on the Syncore
single platform. Flip down the protective shield. Hold the
vacuum connection in both hands. Introduce it into the two
rack bars a and lay it on the sample tubes.
The sealing discs must lie flat on all sample tubes. Tighten
the two locking screws b down, both at the same time,
so as to press the sealing discs against the sample tubes.
Alternatively, the lock nuts f can be used to screw the
cover more tightly. This is especially advised for the racks
R-48 and R-96.
The locking screws must be tightened by hand, both at
the same time, down to the stop. Screwing them down
too hard may damage to the screw thread.
The glass plate cannot be destroyed by screwing them
down too strongly.
Figure 27: Fastening for a vacuum connection
a a
b b
Figure 28: Alternative to screw the cover plate
f
f
Function,putting into operation, operation and maintenace