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OPERATING INSTRUCTIONS
Control panel
(Model MDF-U3086S, U5186S)
Functions of the controller at the control panel are as follows:
1. Temperature setting key (PV/SV):
This key has 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). The temperature setting
can be done by using 2, 3, 4, key. Initial setting temperature is -86
o
C
2. Digital shift key ( ) :
The digit of the figure displayed for temperature adjustment can be shifted using this key.
3. Figure shift key ( ):
This figure that is displayed digitally can be changed by pressing this key.
4. Entry key (ENT)
When the desired temperature is reached, press this key. Operation will commence toward this
new point.
5. Alarm test key (ALARM):
Check that the alarm lamp and the buzzer are functional when the deep freezer is operating well.
6. Buzzer key (BUZZER)
To stop the alarm from sounding, press this key. Should a further abnormality occur, the buzzer will sound
automatically.
7. Alarm lamp (ALARM) and Buzzer:
They operate in the following cases:
a) Break down or power failure at the power supply.
Alarm lamp flickering,
buzzer (sounds)
b) Temperature rises about
10
o
C higher than the setting temperature
Alarm lamp flickering,
buzzer (sounds about 10 minutes later)
8. Filter check lamp (FILTER CHECK)
This lamp lights when the condenser filter is clogged. Clean the condenser filter according to
“MAINTENANCE”.
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