Hoshizaki HUR40A(-D) - Manual (Page 25)

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c) Cabinet Temperature Correction (calibration factor)
In cases where there is a discrepancy between the actual cabinet center temperature
and the displayed temperature for a particular model, a calibration factor is used to
correct the displayed temperature.
WARNING
This unit has been factory tested with the default settings listed. Avoid using
this function except to confirm that the setting is correct. If set incorrectly, the
display could show an acceptable temperature even though the temperature
is out of the proper range. This value should only be changed after consulting
with the factory.
To view the current value, follow the steps below.
1) Turn the power on while pressing the up button. The current correction calibration
factor will be shown. If "18" is displayed, the value is 1.8°F (1.0°C). See the table below
for the default values.
2) If it is determined through discussion with the factory that the setting needs to be
changed, press the up or down button to increase or decrease the value.
3) Press the button to save the new value.
4) Turn the power off and then back on. The unit will start running with the new value.
[Example]
When the average cabinet temperature is 5.4°F
(3.0°C) higher than the thermistor detected
temperature, change the correction calibration
factor to 5.4°F (3.0°C).
Cabinet Temperature Correction (Calibration Factor) Default
Model Setting Range 1-Section 2-Section 3-Section
Refrigerator
-9.9 to 9.9 ° F in 0.9 ° F increments
(-9.5 to 9.5 ° C in 0.5 ° C increments)
00 (0.0 ° F)
(00 (0.0 ° C))
36 (3.6 ° F)
( 20 (2.0 ° C))
Freezer
18 (1.8 ° F)
(10 (1.0 ° C))
45 (4.5 ° F)
(25 (2.5 ° C))