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Operating Manual:
SU780XLE
SU780XLE-LIT-OM-I |
11.18.19
5.4 – Managing Freezer Contents
The SU780XLE freezer is designed for long-term storage of sample materials with
ultra-low, well-regulated temperature storage requirements.
•
The temperature setpoint for the freezer should be changed as appropriate for the
materials being stored using the Graphical User Interface (GUI) - adjusting the high
and low temperature limits as necessary.
•
The current freezer temperature is displayed on the Home screen, and a temperature
history chart is available within the set-up screen.
•
Materials may be placed in the freezer in any convenient arrangement that does
not block the access port, interfere with the door gasket, or prevent the door from
closing completely.
•
For best results operate freezer at full capacity with real or simulated product to
increase the thermal mass, displace air, and maintain optimal stability.
•
Please review the safety precautions in Section 3.
5.5 – Cleaning
Cleaning the Freezer Surfaces
•
Clean the exterior surfaces of the SU780XLE cabinet as needed by using a soft cloth
and mild detergent. Do not use solvent (such as bleach) or harsh abrasive cleansers
or pads.
•
In the event of excess ice accumulation, remove any ice that accumulates inside
the freezer by defrosting it.
— Transfer the contents of the freezer to alternate storage, switch off the power
to the freezer and wait for the ice to melt.
— Wipe up moisture with a clean cloth. If the freezer door can be left ajar safely,
defrosting will be more rapid.
— After defrosting the freezer, switch the power back on. When the temperature
reaches the setpoint, return the contents to the freezer.
•
Refer to Safety Precautions (Section 3) of this Operating Manual while defrosting
the freezer.
5.6 – Calibration of the Resistance Temperature Detector (RTD)
The SU780XLE RTD may be calibrated by inserting a temperature sensor through the
access port of the cabinet wall and securing it next to the RTD located in the right rear
corner of the interior, just above the shelf.
•
To provide access to the RTD, it may be necessary to transfer the contents of
the freezer to alternate storage. Note the Safety Precautions in Section 3 of this
Operating Manual while making such transfers.
•
Navigate to the RTD Calibration screen using the Graphical User Interface (GUI). This
requires a Service PIN.
•
To change offsets:
— Use the “+” and “–“buttons to adjust the offset to the desired value.
— Tap "Save".
