Softkey Function - Fisher ALPHA 1-2 LDplus Operating Manual

5.4.3.

Softkey function

38 • LDplus Control System
5.4.2.2 Active phase
•
Freezing
The ice condenser is cooled.
•
WarmUp VP
The ice condenser is cooled and the vacuum pump is
activated with the pressure control valve closed. If no
pressure control valve is installed, the drying chamber has
to be shut off from the vacuum pump using a manual
valve, for example.
•
Main drying
The drying chamber is evacuated with the ice condenser
being cooled. If a pressure control system is included, the
vacuum is controlled with the corresponding set value for
main drying.
•
Final drying
The final drying phase is only available if a pressure
control system is included. Different control parameters
(set vacuum value, timer) can be defined for main drying
and final drying.
5.4.2.3 Info icon
The info icon flashes every second to draw the user's attention to
error messages, process messages or general information concerning
the process or the unit. The message can be displayed in the process
and unit information window under Menu
Equipment Information System.
Softkeys are keys with dynamic functions assigned to them. The
current key function is displayed in the black field next to the key.
In the screenshot, the left-hand softkey has the function Mode
and the right-hand softkey the function Menu
->
.
Operating Manual Freeze Dryer ALPHA 1-2 LDplus
Process &