Follett REFNAT5-SD Installationshandbuch - Seite 10
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Calibration Procedure
If the displayed temperature differs from the temperature provided from a NIST-traceable thermometer placed in
the center of the chamber, the display temperature can be adjusted to match.
As an example, the table below shows the procedure where displayed temperature is 4.5 C, and the NIST probe
temperature is 5.2 C. Use the Offset Setup Procedure to match the display temperature to the NIST probe
temperature.
Offset Setup Procedure
Operation
1
Press and hold the down
arrow key more than 5
seconds.
2
Set to 5.2 by using Up arrow
key.
3
Press the set key.
Key Lock Operation
This unit incorporates a key lock feature that can inhibit tampering using the keys on the control panel. The key
lock is set to OFF at the factory.
Display
LOC
Key lock setup procedure (Example: Key lock OFF ➩ Key lock ON)
Operation
1
Press and hold the up arrow
key for about 5 seconds.
Note: Key lock can be set any time when the current refrigerator temperature is displayed.
10
REFNAT5-SD, REFNAT5-GD
Key operated
▼
▲
SET
Mode
Key lock ON
Key operated
▲
Display after the key operated
The current refrigerator temperature is displayed
(4.5).
The digits of the temperature display flash.
Pressing the key shifts up the figure by 0.1 C.
Repeat until flashing digit turns to 0.7.
The current adjusted temperature (offset by +0.2
degrees) is displayed (5.2).
Function
Temperature change disabled
Display after the key operated
The current refrigerator temperature is displayed.
Display alternates between LOC and actual
temperature