MVE Biological Systems
TEC 3000 Operating and Maintenance Freezer Manual
13289499 Rev H •
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5.6 Operating Environment
Ambient Temperature and Relative Humidity
MVE cryogenic freezers are designed to be operated in environments near room temperature
(65°F
– 80°F, 18°C – 27°C) and relative humidity below 50%. Due to the large gradient
between LN2 and ambient temperatures, an additional change of a few degrees will not have a
significant impact on the freezer performance. Although temperature changes will affect the
open top MVE and MVE Stock series freezers to a greater degree, it again will not be a
significant effect. The relative humidity should be maintained low enough so that condensation
does not form on the TEC 3000. Elevated humidity levels can lead to excessive condensation
and frost on and around the lid. In situations where the relative humidity is high and
uncontrollable, the lid should be routinely wiped dry to prevent ice formation. Should significant
ice formation develop, thaw as necessary. Refer to the Preventative Maintenance procedures
for details.
Atmospheric Pressure
MVE cryogenic freezers are designed to be operated in environments with atmospheric
pressure range of 8.2 psi (57.2 kPa) to 14.7 psi (101 kPa).
Thermal Load
Since MVE Freezers use LN2 as the refrigerant and do not employ any type of mechanical
refrigeration, the thermal load will be negligible to negative.
