Sanyo MDF-U5486SC, MDF-U7486SC instruction manual Chamber Temperature Setting, KEY Lock Function

CHAMBER TEMPERATURE SETTING

Table 1 shows the basic procedure for setting the chamber temperature. Perform key operations in the sequence indicated in the table. The example in the table is based on the assumption that the desired temperature is -75oC.

Note: The unit is set at the factory that the chamber temperature -80oC.

Table 1. Basic operation sequence (Example: Chamber temperature -75oC)

	Description of operation	Key operated	Indication after operation
			The current chamber temperature is
1	Turn the power switch ON.	----	displayed.
2	Press set key.	SET	The second digit is flashed.
			When pressed, the figure of settable
3	Set to -75 with the numerical value		digit changes.
	shift key and digit shift key.		When pressed, the settable digit
			is shifted.
			Set temperature is memorized and the
4	Press set key.	SET	current chamber temperature is
			displayed.

Note:

•The temperature set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation.

•Although the value of the chamber temperature setting can range from -50oC to -90oC, the guaranteed temperature when there is no load is -85oC when the ambient temperature is 30oC.

•The set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation. In this case, any setting before pressing set key (SET) is not memorized.

KEY LOCK FUNCTION

This unit is provided with the key lock function. When the key lock is ON, change of temperature setting through the key pad is not available. The key lock is set in OFF at the factory.

Display		Mode	Function
L	0	Key lock is OFF	Enable to change of temperature setting
L	1	Key lock is ON	Disable to change of temperature setting

Table 2. Procedure for key lock setting (change from key lock OFF to key lock ON)

	Description of operation	Key operated	Indication after operation
1		----	The current chamber temperature is
			displayed.
2	Press digit shift key for 5 seconds.		The first digit is flashed.
3	Press numerical value shift key		When pressed, the figure of settable
	and scroll the figure to 1.		digit changes.
			The key lock is set to ON.
4	Press set key.	SET	The current chamber temperature is
			displayed.

•The set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation. In this case, any setting before pressing set key (SET) is not memorized.

- 56 - 14