13
START-UP OF UNIT
Follow the procedures for the initial and consequent operations of the unit.
1.
Make sure that all the switches on the control panel, such as the power switch, battery switch, CO
2
backup switch (AT type only) are off.
2.
Liquid CO
2
cylinder for AT type is set at this time.
3.
Shut the door and connect the power cable to the power supply after the inner lid is installed.
4.
Turn on the power switch, battery switch and the temperature is displayed on the digital indicator.
5.
Set the desired chamber temperature by using the keypads on the control panel. Do not set the
chamber temperature at lower than -86
o
C.
6.
Set the temperature at which the backup cooling kit activates according to the procedure on page 21
when the temperature display pointer of temperature recorder corresponds with the desired temperature if
the backup cooling kit is used. (AT type only)
7.
Switch on CO
2
backup switch (AT type).
8.
Make sure that the alarm lamp blinks and the buzzer sounds by pressing the alarm test key (ALARM)
9
Make sure that liquid CO
2
spouts into the chamber by pushing CO
2
backup test switch.
10.
Now you can put articles into the freezer chamber. Switch off CO
2
backup switch (AT type only)
temporarily when putting in a lot of warm articles. Then, turn on this switch again after a certain period
of operation.
Operation after power failure
The set value is memorized by nonvolatile memory in the event of power failure. Accordingly, the
freezer resumes the operation with setting before power failure.
