Method select
In the Method Select menu, turn the select
control to highlight the desired method on the
screen. Press the control to select it.
Feed methods consist of a sequence of feed
and evaporation and drain cycles.
Single solvent feed sequence
These methods consist of a single stage with
periodic feed intervals. The number of feeds
is calculated to deliver the maximum volume
of solvent that the condenser can hold. The
condenser is then drained and the process
repeats until the feed reservoir is emptied.
The end of each feed interval is detected
when ∆T drops to the trigger point (refer to:
Condenser Delta T and End of Feed
Interval Detection).
Some method parameters can be adjusted to
optimise the evaporator for specific
applications. For details, refer to: System
Optimisation, Adjustable method
parameters.
Mixed solvent feed sequence
These methods have two stages with a drain
in between. The first stage consists of
several feeds and removes volatile
components from the mixture. The
condenser is drained after the first stage and
(without feed) the second stage removes the
less volatile component(s).
On completion of the second stage the
process repeats from the beginning until the
feed reservoir is emptied.
The second stage only then repeats as
required to evaporate any remaining
solvent from the evaporation vessel.
Method edit
Adjustable method parameters may be
changed at any time (including when the
evaporator is operating) changes are
stored and will apply to future use of the
method.
To edit method settings:
1. Go to the Method Select menu and turn
the select control to highlight the desired
method.
2. Press the select control to enter the
Method Edit menu.
3. Select the parameter to be edited.
4. Use the select control to scroll through
the available setting options and select
the required value.
5. Select <Back> to return to the Method
Select menu.
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