Freeze-dryer Epsilon 2-10D LSCplus
6 Operation
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Version 07/2022, Rev. 3.0 of 20/07/2022
• sb
Translation of the original operating manual
Shelf cooling test (5)
NOTE
The test is intended solely for freeze-dryers of the type Epsilon 2-6D
LSCplus and Epsilon 2-10D LSCplus.
The shelf cooling test is used to check the performance of the shelf cooling
system (refrigeration unit 2) during the "Main drying" phase.
The shelves must be empty for the test.
Procedure:
• In the main window "Manual", select the button "Operating mode:
select/start"
– "Standard unit test".
• Select "Shelf cooling test" and start the test via the "Run" button.
The parameters for the "Main drying" sections have been configured in
such a way that refrigeration system 1 only acts on the ice condenser,
whereas the shelves are cooled solely by refrigeration system 2.
At the end of the process, a pop-up window with a safety enquiry
(confirmation prompt) opens. Following the confirmation of this enquiry, the
freeze-dryer will be switched to standby.
Evaluation:
Please contact the Christ support team for the evaluation of the test run.
Shelf mapping test (6)
The shelf mapping test is a freeze-drying program for bringing the shelves
to a temperature of +20°C, -40°C, and +40°C for a specific period of time in
order to be able to determine the temperature distribution on the shelves for
each of these three temperatures with the aid of an external shelf mapping
system.
The thermoblocks of the shelf mapping system with the inserted tempera-
ture sensors must be distributed evenly on the shelves and connected to
the external measurement recorder for the test.
Procedure:
• In the main window "Manual", select the button "Operating mode:
select/start"
– "Standard unit test".
• Select "Shelf mapping test" and start the program via the "Run" button.
• Start the external measurement recording process at the same time.
During the test, the predefined shelf temperature values are adjusted and
maintained constant for a specific period of time in order to keep the
temperature distribution in a static state.
