CHART MVE Fusion, Техническое руководство, Страница: 37 / 51

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The Admin Console provide the opportunity to enter the Fusion and cryocooler serial
numbers along with the Admin password. Next two tabs, open source license details and
serial numbers and GUI versions details will be displayed. The user doesn’t have
capability to change any of these details.
5.3 Routine Operation
Under Normal Operation, the MVE Fusion Freezer operates without any user intervention.
The user has simply to load (Precooled) or remove samples from the storage space as
desired. Nonetheless, there are a few guidelines that will result in the most successful
operation.

Pull the lid up very slowly when removing. This will allow the air inside the
storage space to remain stratified, and maintain high clarity and visibility. Pulling
the lid and cork out quickly will disrupt the inside air and cause warm, relatively
moist air to be drawn in, resulting in fog obscuring the view into the storage space.

Return racks to the freezer as quickly as possible. This maintains the “cold
chain of custody,” ensuring the samples never get warm enough to cause damage.

Reinstall the lid as soon as possible. The Gaskets on the lid and the neck
opening are designed to maintain a nearly airtight seal as long as the lid is left in
place. This prevents moisture from entering the dewar and building up ice and frost
on the surfaces.

No more than 2 warm racks can be added to the freezer at a time. Adding more
than two racks at a time may cause nitrogen pressure to exceed the allowed limit
and vent from the tank. (Be prepared to fill with a 22-35 PSI (1.5 - 2.4 bar) liquid
nitrogen cylinder if this happens). See section 5.1 for details of the filling operation.

To maximize the storage capacity of the freezer, the racks need to be arranged in
an optimum fashion. Figure 24 shows the ideal arrangement of standard racks.
Mini racks may be inserted in some of the remaining unoccupied spaces.