3
- V Series and S Series Descriptions -
Throughout this manual references are made to
the"S Series" and "V Series" storage unit vessels. In
order to give a complete understanding of the
difference between these two models, the diagrams
at right are being provided. They show clearly the
difference between the two, and the characteristics
of each. Although the two are quite different physically,
they operate in essentially the same way, and the
electronic controls are identical for them both.
Whenever there is a different procedure or operation
for one, we've clearly stated the different instructions
for each model. When not stated as different, the
procedure or operation is the same for both.
What makes these two designs so different is this
basic fact:
With the S Series models, the liquid nitrogen is
contained within the storage vessel, and the stored
samples are, or are potentially, in contact with the
liquid.
With the V Series or Isothermal models, the liquid
nitrogen is contained inside the vessel walls, and the
stored samples never come into contact with the liquid
nitrogen except in the case of an accidental overfill.
To understand the way the system operates, see
the OPERATION section on the next page for a basic
explanation of the mechanics of the system. Also, be
sure to read this manual completely before attempting
to use this equipment. If you are still not sure how to
use this equipment properly, contact a competent
authority, rather than risking your safety or the safety
of the stored samples.
When the unit is placed into service, check daily to
ensure proper operation and safety of the stored
samples. For the V Series units it is essential to lift the
lid each day and check for vapor and signs of proper
freezing.
S Series Vessel
V Series (Isothermal) Vessel
Liquid nitrogen is contained within
the vessel, and is in direct contact
with the inventory system
Liquid nitrogen is contained inside
the vessel Walls, and does not contact
the inventory system
