Metrohm 788 IC Filtration Sample Processor - Manual (Page 55)

3.3 Rack configuration
788 IC Filtration Sample Processor
47
RESET
CLEAR
x At the end of this basic configuration the 788 IC Filtration Sample
Processor must be turned off and on again or re-initialized by press-
ing <RESET> to make the latest settings effective.
x All data entered up to this point however, are retained. The same is
true for any methods that may have been saved.
3.3 Rack configuration
x Using the keys <Ï> and <Ð> you can run the lift to the desired
work position for the needle.
CONFIG
<Ð>
<ENTER>
x Now open the configuration menu with <CONFIG> and move the
cursor key <Ð>, until you reach the submenu '>rack defini-
tions' . Press <ENTER> to open this submenu where you can de-
fine the rack configuration.
>rack definitions
rack number 2
<ENTER>
x The rack number of the engaged rack will be displayed as soon as
the sample rack has been correctly identified. By confirming with
<ENTER> you access the rack data. (By entering another rack
number you can also edit the data of a sample rack that is not en-
gaged.)
<Ð>
RESET
CLEAR
x You can skip the first entries (code and rack type) with the cursor
key <Ð>. Now you can enter the work position of the needle.
>rack definitions 2
work position 125 mm
x Because you have already positioned the needle at the desired
height, you can accept the current lift position directly by pressing
<CLEAR>. Of course the work position can be entered manually or
the value that has automatically been accepted can be modified
later. Lift positions are given in millimeters (0…125 mm), measured
from the uppermost limit (rest position) of the lift. Consider during
the input of the working position that with sample tubes sealed with
non-perforated PE caps the work position must be set to 125 mm,
since otherwise a vacuum can develop in the sample tube and the
sample will not be aspirated correctly.