20
TEMPERATURE SETTING
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
Key lock is OFF Enable to change of temperature setting
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 key for 5 seconds.
The right digit is flashed.
4
Press key and scroll the figure
to 1.
When pressed, the figure of settable
digit increases.
5 Press SET key. SET
The key lock is set to ON.
The current chamber temperature is
displayed.
Note:
The key lock only works with the chamber temperature setting and the DEF key. (In the MDF-U537D,
the key lock function for both the top and bottom compartments together.)
To release the key lock, select L0 when performing the key lock mode operation described above. (In
the MDF-U537D, the key lock can be released in either the top compartment mode or the bottom
compartment mode.)
