Hoshizaki HUR40A(-D) - Manual (Page 17)

17
3. Refrigerators – Energy Saving Operating Mode
a) Sequence of Operation
Note:
1) Cut-on, cut-off, and cabinet temperature are read by the same sensor, called the "cabinet
thermistor."
2) The defrost thermistor reads the evaporator temperature.
Defrost End
Defrost thermistor
reaches defrost
termination temperature,
or defrost timer reaches
1 hour
Defrost heater off
Defrost Start
Preprogrammed time interval
1. Compressor off
2. Frame heater(s) off (Q6 and later)
3. Evaporator fan(s) off
4. Condenser fan off
5. Defrost heater on
6. "dF" displayed
Five minutes after
defrost heater off
1. Compressor on
2. Condenser fan on
Five minutes after
compressor start-up
1. Evaporator fan(s) on
2. Frame heater(s)
on (Q6 and later)
Board Self Check
1. Frame heater(s) on continuously
(Q5 and earlier)
Frame heater(s) cycle on and off
(Q6 and later)
2. Evaporator fan(s) cycles on and off
POWER ON
2-minute Delay
1. Compressor start-up
2. Condenser fan start-up
3. Frame heater(s) on
(continuously)
4. Evaporator fan(s) on
(continuously)
Cycle Off (Cut-out
temperature reached)
[Minimum 2 minutes]
1. Compressor off
2. Condenser fan off
3. Frame heater(s)
cycle on and off
(Q6 and later)
4. Evaporator fan(s)
cycles on and off
Continue as
normal cycling
Cycle On (Cut-on
temperature reached)
[Minimum 2 minutes]
1. Compressor start-up
2. Condenser fan start-up
3. Frame heater(s) on
(continuously)
4. Evaporator fan(s) on
(continuously)
One minute after evaporator
fan start-up "dF" no longer
displayed, cabinet temperature
displayed