Freeze-dryer Gamma 1-16 LSCplus
Freeze-dryer Gamma 2-16 LSCplus
6 Operation
Version 04/2013, Rev. 2.10 of 09/03/2020
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Translation of the original operating manual
Button ">>more"
The button ">>more" can be used to enter more functions and set values in
a program-related manner.
Fig. 60: Selection of program-related functions and set values
Vacuum pump warm-up
See chapter 6.6 - "Optional extensions"
Option: Pressure increase test (only with the
→
double chamber method,
see chapter 6.6 - "Optional extensions")
The
→
pressure increase test
can only be performed when the freeze-dryer
is equipped with an intermediate valve.
NOTE
The indication of the measurement value "dp Test" can be configured in
chapter 6.5.1.1 - "Main window "Manual"" under "Actual values of the
current process" in the dialog box "Select actual value".
In contrast to the pressure increase test in the manual mode, repeated
pressing of the button in the program mode enables the selection of
different variants.
•
Periodic pressure increase test:
The test will be performed periodically during the entire main or final
drying phase. The parameters "Duration test" and "Time between tests"
apply. The maximum pressure increase is limited to 100%, referring to
the actual value at the beginning of the measurement. If the value is
exceeded, the pressure increase test will be aborted in order to prevent
the product from thawing.
•
Progress condition:
In the last main drying or final drying section, two pressure increase
tests will be performed and evaluated. The start point will be calculated
automatically by the control system. The parameters "Duration test" and
"Time between tests" apply.
If both tests have been passed, the drying process will be considered
complete at the current conditions. Thus the progress condition for swit-
ching to the next section is fulfilled and the next section will be initiated.
