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Operation
Switched states
When switching on the device, the intermediate valve is closed
by default. When switching the intermediate valve, the display
changes as follows:
•
In the closed state, the symbols [1] and [2] are shown in
white.
•
When the intermediate valve is open, the symbols [1] and
[2] are shown in yellow.
Operating modes
Manual mode
In the manual mode, the intermediate valve can be opened and closed as necessary during the
ongoing process. If the pressure increases at the end of the process, the closed intermediate
valve will be reopened again automatically when achieving the previously and manually defined
switch point!
Automatic mode
In the automatic mode and during the ongoing process, the operator can set a switch point (=
vacuum pressure) by tapping the button [Intermediate valve] on the control panel whereby the
valve will be closed. As a result, the valve closes when the pressure falls below the defined
vacuum pressure and no further distillate will get into the receiving flask.
When the valve is open, the switch point can be newly set any number of times. As soon as
the valve is closed, a new switch point cannot be set anymore!
When venting the evaporator, the intermediate valve opens automatically and regardless of the
active operating mode as soon as the switch value is exceeded. The distillate flask can thus be
removed without pressure difference.
Initial switch point
➜
Switch on the device and make sure that the intermediate valve has been detected and
displayed as described above.
➜
In the [Settings] menu, select the option [Switch valve automatically].
➜
Switch to the operating mode [Advanced] via the home page.
➜
Activate the required operating mode.
The intermediate valve can be operated in the
manual and the automatic mode. The selection of
the operating mode is made in the [Settings] menu:
•
Touch the button [Switch valve automatically]
in the list of the parameters to switch from the
manual mode to the automatic mode.
•
Touch the button [Switch valve manually] in
the list of the parameters out of the automatic
mode to switch to the manual mode.
The list entry is only available If the intermediate
valve has been detected correctly!
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