Martin Christ Epsilon 2-10D LSCplus - Manual (Page 79)

Freeze-dryer EPSILON 2-10D LSCplus
6 Operation
Version 04/2013, Rev. 1.5 of 16/12/2014 • sb
79
Translation of the original operating manual
Option: Aeration, stoppering, storage
(see chapter 6.6 - "Optional extensions and special equipment")
1 Button for selecting
the variant
2 Set value "Aeration"
3 Set value "Aeration
after stoppering"
4 Set value
"Stoppering"
5 Set value "Storage"
Fig. 70: Dialog box "Aeration, stoppering, storage"
Repeated pressing of this button enables the user to choose between the
following variants:
• Deactivated
• Aeration (up to the "Aeration" value) and subsequent storage
• Stoppering (at drying vacuum followed by aeration up to atmospheric
pressure) with subsequent storage
• Aeration (up to the "Aeration" value), stoppering (followed by aeration
up to atmospheric pressure) with subsequent storage
The set values of the parameters can be adapted by way of the respective
button if the button is shown with a blue background.
"Aeration, (stoppering), storage" procedure:
1. Aeration up to the desired partial vacuum ("Aeration" value):
After the actual freeze-drying process has been completed, the ice
condenser continues to be cooled and the shelves are held at the
temperature of the last drying section. The system is aerated until the
desired partial vacuum is reached ("Aeration" value, see the illustration
above, item 2).
NOTE
The product vials must be sealed at a chamber pressure below 900 mbar
in order to prevent the stoppers from being pushed out of the vials at low
atmospheric pressure.
2. Stoppering followed by aeration up to atmospheric pressure
While the ice condenser continues to be cooled and the shelf
temperature is maintained, the shelves are moved together in order
press the Lyo stoppers into the product vials. The stoppering pressure
is maintained over the specific "Stoppering" time (see the illustration
above, item 4). The subsequent final aeration is performed in two steps.
In the first step, the system is aerated up to the partial vacuum that is