Altering CUB Configuration Using The Hand-Held Terminal
The MultiFlex CUB Hand-Held Interface • 55
Wash Fail-Safe Time
The Wash Fail-Safe time allows you to sus-
pend Wash mode and resume refrigeration if
Wash mode lasts longer than a fixed amount of
time. Enter the desired Wash Fail-Safe time in
minutes (MM) format.
8.2.6. Defrost Setup Screens
The series of screens under the “Defrost”
heading are where the parameters that control
defrost must be specified.
8.2.6.1.
Defrost Type
Defrost Type
Choose the manner in which the case circuit
will be defrosted in the
Defrst
field. There are
two options:
•
Off Cycle -
Refrigeration will be disabled, and no
heat will be directly applied to the evaporator.
•
Electric -
Refrigeration will be disabled, and electric
heat will be applied to the evaporator.
Pump Down
This field is shown only when Electric
defrost is selected as the Defrost Type. Enabling
Pump Down causes the CUB to delay transition
from Refrigeration to Defrost to allow refriger-
ant to be pumped out of the evaporator. Pump
Down uses the refrigeration solenoid.
To enable the Pump Down delay, set this
field to
ENABLE
. To disable the Pump Down
Delay, set this field to
DISABLE
.
Termination Type
The Termination Type determines which
sensor’s value will be used to determine when a
defrost cycle must be terminated. There are six
options:
•
Digital -
Digital temperature sensor (Klixon).
•
Term Temp -
Analog temperature sensor. Defrost
will terminate when the temperature is above the ter-
mination temp setpoint.
•
Time -
Defrost will terminate when defrost time ex-
pires (this is the same as no termination).
•
Min Case Temp -
Instead of using a dedicated
“Term Temp” sensor, the CUB will use the lowest
value among all case temperature sensors as the de-
frost termination temperature value.
•
Suction Pressure -
The suction pressure transducer.
Defrost will terminate when suction pressure rises
above the termination pressure setpoint.
•
Case Temp 1-6 -
Instead of using a dedicated “Term
Temp” sensor, the CUB will use one of the six case
temperature sensors as the termination sensor during
defrost.
8.2.6.2.
Fan Control
Evap Fans During Defrost
This field determines the state of the case
circuit evaporator fans when defrost is active for
the circuit. Set this field to
ON
to turn the case
fans ON during defrost, or
OFF
to turn the case
fans OFF.
Evap Fans During Idle
This field determines the state of the case
circuit evaporator fans when the case tempera-
ture setpoint is satisfied and refrigeration is not
active in the case. Set this field to
ON
to leave
the case fans ON during idle, or
OFF
to turn the
case fans OFF.
Evap Fan ON Delay After Defrost
This parameter delays the amount of time the
CUB will wait after a defrost has ended before
turning on the evaporator fans. This delay is
designed to keep the fans from blowing moisture
off the coil and onto the case doors or walls.
Enter the desired delay in seconds.
Defrst: Electric
PumpDwn: Enable
Term Type
: Term Temp
EvapFanDefr: OFF
EvapFanIdle: ON
EvapFan On Delay
AfterDefr: 15 S
