10
NAME AND FUNCTION OF PARTS
Control panel and digital display indicator
1. Power supply switch (POWER): Power all functions except remote alarm and back-up system for
AT/ATN type.
2. Back-up switch (BACK UP) (ATN type): Switch ON for operation of the back-up system and switch
OFF for stopping. Handle this switch according to page 14 “Back-up system”.
3. Back-up test switch (TEST) (ATN type): Examine the functions of the back-up system. This switch
allows liquid CO
2
or liquid N
2
to spout under any circumstances. Handle it according to page 14
“Back-up system”.
4. Remote alarm switch (REMOTE ALARM): This switch is for remote alarm. In case of operating
remote alarm, turn the switch to ON.
5. Buzzer key (BUZZER): To stop the alarm from sounding, press this key. Should a further
abnormality occur, the buzzer will sound automatically.
6. Alarm test key (ALARM): Check that the alarm lamp and the buzzer are functional when the freezer is
operating well.
7. Temperature setting key (PV/SV): This key has two functions.
PV; present freezer compartment temperature is displayed.
SV; setting temperature is displayed.
When the desired temperature is set, this key should be pressed (SV side). When no key is pressed
within 1 minute, displayed number won’t be memorized, setting will be over and indicator will display the
present value.
8. Digit shift key ( ): The digital of the figure displayed for temperature adjustment can be shifted
using this key.
9. Figure shift key ( ): The figure that is displayed digitally can be changed by pressing this key.
10. Entry key (ENT): When the desired temperature is reached, press this key. Operation will
commence toward this new point.
11. Alarm lamp (ALARM): This lamp will flash when the unit is in alarm condition.
12. Filter check lamp (FILTER CHECK): This lamp lights when the condenser filter is clogged. Clean
the condenser filter according to page 16 “Cleaning of condenser filter”.
13. Back-up lamp: This lamp will light when the back-up switch is ON. (This doesn’t show the case
that back-up system is activated.)
14. Digital temperature indicator (TEMPERATURE
O
C): This indicator shows the present temperature or
setting temperature (flash).
15. Temperature recorder (ATN type): This records the internal temperature. Refer to page 15
“Temperature recorder”.
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Control panel Digital display indicator
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