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5.1 LCO2/LN2 Backup System
The backup system will keep the freezer chamber temperature below the critical level in the event of a power
or equipment failure. If power to the freezer fails, or the freezer warms above the user-defined set point, the
Backup System injects a controlled amount of liquid CO
2
or N
2
into the chamber to keep the chamber
temperature within the specified temperature range.
The LCO
2
or LN
2
must be injected from the access port located at the top side (back right corner) of the freezer.
The backup system probe should be installed side by side with control probe inside the cabinet.
For more information on the LCO2/LN2 backup system, please refer to the User Manual attached to the
accessory.
(Important Note: When selecting a LCO
2
or LN
2
supply cylinder, it must be equipped with a siphon tube)
5.2 Chart Recorder
The chart recorder is used as an independent
temperature monitoring for the freezer.
To install the chart recorder into the Freezer:
Open the cover plate (1) on the right bottom door
and install 4 screws at the corners of chart
recorder (2) from the back of right bottom door
(3).
For more information on how to run and calibrate
the chart recorder, please refer to the chart
recorder User Manual attached to the accessory.
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