RS.8D.M1.22 AK2-SC 255 Reference Manual 171
ture. For fixtures with a KVQ electronic evaporator
pressure regulating valve, Sensor failure can
indicate a problem with the NTC sensor in the valve
actuator.
When in Sensor failure status, an AKV valve will
operate at the mean percentage used during its most
recent period in Normal operation status. A KVQ
valve will open fully in sensor failure mode.
To determine which sensor has failed, go to the
alarms screen.
Service shutdown; The Smart Case Controller has been shut down using
the service screen, either for case cleaning or other
service.
The screen at left below is the second page of an evaporator status screen.
Evaporator Settings
(Smart Case Control)
If you select the settings icon (second from the left on the menu bar at the bottom of
any evaporator screen), an evaporator settings screen like the one at right above
appears. To the right in the body of the screen are fields related to defrost.
Terminate: The termination set point.
Coord: If “Yes,” then defrost for all fixtures in this group is
coordinated.
Drip Down: The time in seconds allowed after defrost for the
fixture to drain before refrigeration begins.
Fan Delay: The time in minutes after defrost during which case
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