10
FREEZER COMPONENTS
Control panel
1. Power supply switch (POWER):
Power all functions except remote alarm and backup cooling kit for
ATN type.
2. Backup switch (BACK UP)
(ATN type)
:
Switch ON for operation of the backup cooling kit and switch
OFF for stopping. Handle this switch according to page 28 “Backup cooling kit”.
3. Backup test switch (TEST)
(ATN type)
:
Examine the functions of the backup cooling kit. This
switch allows liquid N
2
to spout under any circumstances. Handle it according to page 28 “Backup
cooling kit”.
4. Remote alarm switch (REMOTE ALARM):
This switch is for remote alarm. In case of operating
remote alarm, turn the switch to ON.
5. Alarm buzzer stop 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. (+50
o
C to -170
o
C)
SV; setting temperature is displayed. (-130
o
C to -152
o
C)
When the desired temperature is set, this key should be pressed (SV side). When no key is pressed
more than 90 seconds, displayed number won’t be memorized, setting will be over and digital
temperature indicator will display the present value.
8. Digit shift key ( ):
The digit of the figure displayed for temperature adjustment can be shifted using
this key.
9. Numerical value shift key ( ):
The figure that is displayed digitally can be changed by pressing
this key.
10. Enter key (ENT):
By pressing this key in set mode, the setting is memorized and set mode is
completed.
11. Alarm lamp (ALARM):
This lamp will flash when the unit is in alarm condition.
12. Filter check lamp (FILTER CHECK):
This lamp blinks and the alarm buzzer sounds when the
condenser filter is clogged. Clean the condenser filter according to page 18 “Cleaning of condenser
filter”.
13. Backup lamp:
This lamp will light when the backup switch is ON. (This doesn’t show the case that
backup cooling kit 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 27
“Temperature recorder”.
16. Battery switch:
It is the switch of the battery for the power failure alarm. Turn it on usually.
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MDF-1156ATN
>
5
6 7 8
9 10
15
1
2
3
4
Control panel
11
12
14
13
Digital display indicator
16
Summary of Contents for MDF-1156 Series
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