Table of Contents
Advertisement
General Recommendations
3 General
Recommendations
3.1 Initial Loading
4
Installation and Operation Manual
The refrigeration system is designed to maintain ultra-low
temperatures with safety in an ambient environment up to +32°C (90°F),
only when the freezer is used for storage.
Note This unit is not a "rapid-freeze" device. Freezing large quantities of
liquid, or high-water content items, will temporarily increase the chamber
temperature and will cause the compressors to operate for a prolonged time
period. Attempting to utilize this freezer improperly may jeopardize safety or
cause undue stress or damage to the refrigeration compressors.
Avoid opening the lid for extended time periods since chamber temperature
air will escape rapidly. Room air, which is higher in humidity, replacing
chamber air may cause frost to develop in the chamber more rapidly.
After reading and completing the Safety Considerations, Pre-Installation,
Installation, and Operation sections of this manual, turn the Key Switch to
the POWER ON position.
When loading the unit with "pre-frozen" materials, the operating
temperature set point of the freezer should be set no lower than the
temperature of the "pre-frozen" material. Allow the unit to operate at the set
point for eight hours. The set point may then be lowered in increments no
greater than 10°C. Allow a stabilizing period of eight hours for each ten
degree adjustment, until the desired set point is achieved.
Note Failure to follow these procedures or overloading the unit may cause undue
stress on the compressors or jeopardize user product safety.
Thermo Scientific Benchtop Ultra-Low Temperature Freezers
Advertisement
Table of Contents
