Chamber Temperature Setting; Key Lock Function - NuAire NU-9728GA Instruction Manual

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 -75
Note: The unit is set at the factory that the chamber temperature -80
Table 1. Basic operation sequence (Example: Chamber temperature -75
Description of operation
1 Turn the power switch ON.
2 Press set key.
Set to -75 with the numerical value
3
shift key and digit shift key.
4 Press set key.
Note:
• Although the value of the chamber temperature setting can range from -50
temperature when there is no load is -86
• The setting 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
L 0
L 1
Table 2. Procedure for key lock setting (change from key lock OFF to key lock ON)
Description of operation
1
2 Press digit shift key for 5 seconds.
Press numerical value shift key
3
and scroll the figure to 1.
4 Press set key.
• The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation.
o
C.
o
C when the ambient temperature is 30
Mode
Key lock is OFF
Key lock is ON
Key operated
The current chamber temperature is
----
displayed.
SET The second digit is flashed.
When pressed, the figure of settable
digit changes.
When pressed, the settable digit
is shifted.
Set temperature is memorized and the
SET current chamber temperature is
displayed.
Enable to change of temperature setting
Disable to change of temperature setting
Key operated
The current chamber temperature is
----
displayed.
The first digit is flashed.
When pressed, the figure of settable
digit changes.
The key lock is set to ON.
SET The current chamber temperature is
displayed.
15
o
C.
o
C)
Indication after operation
o o
C to -90 C, the guaranteed
o
C.
Function
Indication after operation