Phcbi MPR-722 Series, Руководство по эксплуатации

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ALARM TEMPERATURE SETTING
Setting the low-temperature alarm
An abnormality (chamber temperature drop) is indicated by the blinking of red LED lamp and the chamber
temperature display and the buzzer sounding (15 minutes after blinking) if the chamber temperature falls
below the set value of low-temperature alarm. Always set the low-temperature alarm to protect stored
items from damage resulting from a drop in temperature.
 Setting range for low-temperature alarm:
between 14 o C and 2 o C lower than the chamber set temperature
 Initial setting (factory setting): 5
o
C lower than the chamber set temperature
Example: Change the low temperature alarm to chamber temperature minus 3
o
C from chamber
temperature minus 5 o C
► Following shows a sample setting. Set the desired low-temperature alarm according to the condition
of use.
Operation Key operated Display after operation
1 ----- -----
The current chamber temperature is
displayed.
2
Press the up arrow key for 5
seconds. F00 is displayed and the first digit
blinks.
3 Press the up arrow key twice.
The display is changed to F02 from
F00.
4 Press the “set” key. SET
The current setting (-05) is displayed
and the first digit blinks.
5
Press the up arrow key and scroll
the figure to 3. The display is changed to -03 from
-05.
6 Press the “set” key. SET
Set temperature is memorized and
the current chamber temperature is
displayed.
 The unit will return from setting mode to temperature display mode automatically after 90 seconds if no
key is operated (auto-return function). In this case, the setting is not changed.
<Important>
Regardless of the setting of low-temperature alarm, the alarm indicator and the temperature display blink
and the buzzer operates if the chamber temperature is lower than 0
o
C to prevent the stored items from
freezing.