Hoshizaki TempGuard FH1-SSB, Руководство по обслуживанию, Страница: 23 / 63

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(2) Defrost for Freezer
This unit uses a time-initiated heated defrost. It is preset at the factory to defrost 6 times
per day for general conditions. However, if it is determined that this interval does not suit
the actual conditions the unit is exposed to, the interval can be changed. To change, see
"(3) Defrost Frequency Adjustment" below. Contact the HOSHIZAKI Technical Support
Department for recommendations. Please note that since the defrost is a heated defrost,
it will have a tendency to raise cabinet temperature. Defrost termination temperature is
100°F (37.8°C).
During freezer defrost, the cabinet temperature is not displayed, "dEF" is displayed in its
place.
(3) Defrost Frequency Adjustment
1) Press and hold the up/down arrows simultaneously for 3 seconds. Press "ENTER" until
the dF frequency is displayed.
) To change the time-initiated defrost frequency, press the up/down arrows until the
desired value is displayed. For refrigerators, the defrost frequency is adjustable
between 0 and 1 defrosts per 4 hours. For freezers, the defrost frequency is
adjustable between 1 and 1 defrosts per 4 hours. The factory default for refrigerators
is 0 and the factory default for freezers is 6.
3) To save the value, press "ENTER" repeatedly until you have cycled through the menu
and the unit returns to the normal display mode. If you do not cycle through the menu
and no button is pressed in 15 seconds, the display will return to normal and the defrost
frequency will remain unchanged.
Note: The change in the defrost setting will take effect after the next defrost based on
the previous setting. If it is desired that this change in interval timing take effect
immediately, turn the unit off and back on. The next time-initiated defrost will take
effect "x" hours after power is resupplied. For example, if the setting is dF 6, x=4
and the next defrost will take place 4 hours from the time that power is applied.
Primary defrost termination is controlled by the defrost thermistor. However, two
additional safeties are also present:
• Time Termination - 1 hour maximum
• Temperature Termination - Measured by a separate device that is in-line with the
heaters and independent of the control board
c) Temperature Display Scale (°F or °C)
To change the display scale, follow the steps below.
1) Press and hold the up/down arrows simultaneously for 3 seconds. Press "ENTER" until
"F" or "C" temperature display scale is displayed.
) To change the temperature display, press the up/down arrows until the desired scale is
displayed. The factory default is "F".
3) Press "ENTER" to save the value and return to normal display mode. If you do not
press "ENTER" and no button is pressed in 15 seconds, the display will return to
normal and the temperature display scale will remain unchanged.