Hoshizaki HUR68A(-D) Refrigerators - Energy Saving Operating Mode, a Sequence of Operation

3. Refrigerators – Energy Saving Operating Mode

a) Sequence of Operation

POWER ON

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

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

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)

Continue as normal cycling

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

Defrost End Defrost thermistor reaches defrost

termination temperature, or defrost timer reaches 1 hour

Defrost heater off

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)

One minute after evaporator fan start-up "dF" no longer displayed, cabinet temperature displayed

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.

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