Lauda Mobifreeze M270, Operation Manual, Page: 20 / 94

4 Structure and function
4.1 Functional description of the Mobifreeze M 270
The LAUDA Mobifreeze M 270 ultra low temperature chest freezer is a
mobile, actively temperature-controlled ultra low temperature chest freezer
that operates independently of the mains power supply and was designed for
the internal or external transport of sensitive active ingredients or samples
requiring storage at a constant, monitored temperature.
The integration of a powerful battery and optimized insulation ensures com-
pliance with cold chain requirements in intralogistics and for "factory trans-
port" in road logistics. With all-round impact protection, sturdy push handles,
a braking system and heavy-duty casters, the ultra low temperature chest
freezer is optimized for harsh logistics requirements. The ultra low tem-
perature chest freezer can be freely adjusted to any temperature between
-50
°
C and -86
°
C, and offers the same controlled storage conditions (e.g.
temperature stability) as stationary ultra low temperature chest freezers.
The device operates with two high-performance compressors. The air-
cooled condenser at the back of the device releases the heat extracted
from the refrigeration compartment into the ambient air. The temperature
controller keeps the preset temperature constant and has an internal data
logger. The current temperature in the cooling chamber is shown on the
controller display.
A separate display shows the charge level of the integral high-performance
battery (main battery), which ensures mains-independent operation for a
minimum of 4 hours. Flexible changeovers between mains operation and
battery operation ensure a high level of product and transport safety.
Natural refrigerants are used to ensure environmentally-friendly, future-
proof operation.
The device is optimized for operation at the respective maximum set tem-
perature and also achieves maximum temperature stability (over time) at this
temperature.
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