Alarm temperature setting

TEMPERATURE SETTING

This unit is provided with both high and low temperature alarms. The temperature at which the alarm is activated may be changed.

The available set range for high temperature alarm is between +2oC and +14oC and -2oC and -14oC for low temperature alarm against the chamber temperature.

Note: The temperature alarm is set at ±5oC of the set temperature at the factory.

Display	Mode	Function
	High temperature alarm set	See Table 5 on page 18
	Low temperature alarm set	See Table 5 on page 18

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 3oC 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 3oC lower than the set temperature.

Table 3. Procedure for setting high temperature alarm

Description of operation	Key operated
1	----
1

2 Press key for 5 seconds.

3	Press key and scroll the figure
3	to 1.
	to 1.
4	Press SET key.	SET

Set the temperature to 003 with the

key and key.

6 Press SET key.

SET

Indication after operation

The current chamber temperature is displayed.

The first digit is flashed.

When pressed, the figure of settable digit increases.

The first digit is flashed.

Pressing the key shifts the digit which can be set.

When pressed, the figure of settable digit increases.

Alarm temperature is memorized and the current chamber temperature is displayed.

Table 4.		Procedure for setting low temperature alarm
	Description of operation		Key operated	Indication after operation
1			----	The current chamber temperature is
				displayed.

2	Press	key for 5 seconds.		The first digit is flashed.

3	Press	key and scroll the figure		When pressed, the figure of settable
	to 2.			digit increases.

4	Press SET key.		SET	The first digit is flashed.

5	Set the temperature to -03 with the			Pressing the key shifts the digit which can be set.
				When pressed, the figure of settable
	key and key.
				digit increases.

Alarm temperature is memorized and

6 Press SET key.SET the current chamber temperature is displayed.

Note: The alarm may operate depending on the setting of high temperature alarm when a large amount of load is put in the chamber after defrosting. This does not mean abnormality. The alarm is canceled automatically when the chamber temperature gets to the set temperature.

With regardless the setting of low temperature alarm, the alarm is activated when the chamber temperature is lower than 0oC. This is a safety function to prevent the stocked materials from freezing.

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