Control Mode
The Control Mode of operation is indicated when the
Mode LED is OFF. With the desired temperature set
point and alarm values entered, the refrigerator will then
begin to control to the set temperature. There is a time
delay between compressor activations. This delay begins
the moment the controller is energized or the moment the
compressor turns off during normal operation. The delay
is added to provide time for the system pressure to drop
before the compressor tries to start again.
Loading
Follow the guidelines below in order to provide optimal
refrigerator performance:
•
When loading with critical samples, verify all
alarms and features are operating properly.
•
Space samples uniformly in the chamber.
•
Keep samples away from the back wall that may
obstruct airflow.
•
It is best to load the refrigerator from bottom to
top. Keeping the area next to the air intake and
exhaust clear will help assure proper airflow.
Temperature Digression
By pressing the Increase keypad while the refrigerator is
in the Control Mode, the display will show the warmest
temperature recorded since the unit was energized or the
digression values were reset. Pressing the Decrease
keypad will display the coldest temperature recorded
since the unit was energized or the digression values
were reset.
To reset the temperature digression values, simply press
the Increase and Decrease keypads at the same time.
The display will show Clr, indicating the controller will
begin recording new warm and cold digressions once
more.
16
C
ONTROLS
