Freeze-dryer Alpha 1-4 LSCplus
Freeze-dryer Alpha 2-4 LSCplus
Version 01/2011, Rev. 2.3 of 03/07/2017 • sb
Translation of the original operating manual
Standard unit test
Apart from the process phases of the freeze-drying process ("Freezing",
"Warm-up", "Main drying", and "Final drying") and the operating mode
"Defrosting", the button "Unit Test" is also available. This button opens a
selection of a test with fixed parameters. After consultation with the
manufacturer, this test can be performed in order to check the functionality
and processes of the freeze-dryer.
Fig. 32: Dialog box "Standard unit test"
Performance test (1)
The performance test is used to determine the following performance
parameters:
• vacuum decrease rate
• final vacuum
• minimum ice condenser temperature
• shelf cooling rate
• minimum shelf temperature
• shelf heating rate
Prior to performing a test, ensure that the chamber is dry and unloaded
and that the ice condenser is defrosted.
Procedure:
• In the main window "Manual", select the button "Operating mode:
select/start" – "Standard unit test".
• Select "Performance test" and start the test via the "Run" button.
The test will be performed. The parameters will be measured at defined
points of time, evaluated, and displayed in a dialog box in the form of a
table. The result will be indicated by way of a dialog box.
If the freeze-dryer is equipped with the LPCplus SCADA software, the
results will be documented in the event list.
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