7
3. General Recommendations
The refrigeration system is designed to maintain ultra-low temperatures with safety in
a +32
o
C ambient environments,
only
when the freezer is used for storage.
CAUTION!
This unit is not a “rapid-freeze” device. Freezing large quantities or 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 the freezer improperly may jeopardize safety or cause
undue stress or damage to the refrigeration compressors.
Avoid opening the door 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 rapidly.
3.1 Environmental Conditions
This equipment is designed to safe at least under the following conditions:
1.
Indoor use;
2.
Ambient temperature 15 to 32
o
C;
3.
Main supply voltage fluctuation not to exceed
+10%, -10%
of normal voltage.
3.2
Initial Loading
When loading the unit with “pre-frozen” materials, the operating temperature setpoint
of the freezer should be set no lower than the temperature of the “pre-frozen” material.
Allow the unit to operate the setpoint for eight hours. The setpoint may than be
lowered in increments no greater than 10
o
C. Allow a stabilizing period of eight hours
for each ten degree adjustment, until the desired setpoint is achieved.
CAUTION!
Failure to follow these procedures or overloading the unit may cause undue
stress on the compressors or jeopardize user product safety.
