17
ALARM TEMPERATURE SETTING
This unit is provided with both high and low temperature alarms. The temperature at which the alarm is
activated can be changed.
The available set range for high temperature alarm is between +2 oC and +14 oC and -2 oC and -14 oC for
low temperature alarm against the chamber set temperature.
Note: The temperature alarm is set at ±5 oC of the set temperature at the factory.
As an example, Table 3 shows the procedure to set the high temperature alarm so that the alarm can
activate when the chamber temperature is 3 oC higher than the set temperature.
Table 4 shows the procedure to set the low temperature alarm so that the alarm can activate when the
chamber temperature is -3 oC lower than the set temperature.
Table 3 Procedure for setting high temperature alarm (Change from 5 oC to 3 oC)
Description of operation Key operated Indication after operation
1 ---- The current chamber temperature is
displayed.
2 Press numerical value shift key for
5 seconds.
The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 1.
When pressed, the figure of settable
digit changes.
4 Press set key. SET The first digit is flashed.
5
Set the temperature to 003 with the
digit shift key and numerical value
shift key.
Pressing the key shifts the digit which
can be set.
When pressed, the figure of settable
digit changes.
6 Press set key. SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
Table 4 Procedure for setting low temperature alarm (Change from -5 oC to -3 oC)
Description of operation Key operated Indication after operation
1 ---- The current chamber temperature is
displayed.
2 Press numerical value shift key for
5 seconds.
The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 2.
When pressed, the figure of settable
digit changes.
4 Press set key. SET The first digit is flashed.
5
Set the temperature to -03 with the
digit shift key and numerical value
shift key.
Pressing the key shifts the digit which
can be set.
When pressed, the figure of settable
digit changes.
6 Press set key. SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
The alarm temperature set mode returns to the temperature display mode automatically when 90 seconds
has passed without any key operation.