Freeze-dryer Alpha 1-2 LSCbasic
5 Set-up and connection
Version 07/2022, Rev. 1.0 of 19/07/2022
• sb-ja
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Translation of the original operating manual
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5.3
Aeration and media drain valve
The aeration and media drain valve is located on the left side of the unit
(see chapter 2.1.1 - "Functional and operating elements").
After the end of a freeze-drying process, the unit will be aerated via the
aeration valve.
Additionally, it is used to drain off the condensate and the defrosting water.
• Connect the drain hose (included in the scope of supply) to the hose
connector.
• Place a collecting vessel under the unit.
The hose must be laid with a continuous slope and the end of the hose
must always be above the liquid level in the collecting vessel. This prevents
water and dirt residues from being sucked into the ice condenser chamber
if there is negative pressure when the media drain valve is opened.
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5.4
Vacuum sensor
NOTE
Please refer to the separate operating manual of the vacuum sensor!
The freeze-dryer is equipped with a Pirani vacuum sensor.
NOTE
Capacitive vacuum sensors cannot be used.
