Hoshizaki service manual DKM-500BAH Sequence Flow Chart and Component Operation, Cycle

Page 8

DKM-500BAH Sequence Flow Chart and Component Operation

8

Cycle Steps

 

2. Harvest Cycle

3. Freeze Cycle

 

1. One Minute

• Maximum inlet water valve time: 6 minutes

• Minimum freeze time: 5 minutes

4. Pump-Out

 

• Maximum freeze time: freeze timer setting

 

Fill Cycle

• Maximum harvest time: 20 minutes

• Bin control can only shut down unit within

Cycle

 

Thermistor in

1 to 3 minute timer

 

 

 

first 5 minutes of freeze cycle

 

 

 

control

in control

 

Initial startup always

 

5 minute timer

F/S in

 

 

 

 

in control

control

 

begins here

 

 

 

 

 

F/S closed

 

F/S closed

 

 

"E" board will have

F/S Check

F/S Check

 

 

 

 

 

 

 

 

 

 

 

 

5 second delay

WV Energized

Comp energized

Thermistor temp

Comp continues

Freeze cycle

PM stops for 2 sec., SR

 

F/S open

HGV energized

reaches 48°F (9°C)

HGV de-energized

operation turned

energizes, starting PM &

 

WV continues

(3.9 kΩ or less)

WV de-energized

over to F/S

DV for 10/20 sec. each 1,

 

 

 

Harvest timer starts

PM energized

 

2, 5, or 10 cycles.

 

 

 

 

FMS energized

 

Comp continues

 

 

 

F/S open

 

 

HGV energized

 

 

 

If F/S is open, compressor stops and cycle returns to 1 minute fill

FMS de-energized

 

 

 

 

Legend:Comp–compressor; DV–drain valve; FMS–self-contained fan motor; F/S–float switch;

HGV–hot gas valve; PM–pump motor; SR–service relay; WV–inlet water valve

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Contents DKM-500BAH Hoshizaki AMERICA, INC Contents Page Specifications DKM-500BAHII. General Information Construction DKM-500BAHSequence of Operation DKM-500BAH Sequence Flow Chart and Component Operation CycleControl Board Control Board Control Products E Control BoardControl Board Layout Harvest Backup Timer and Freeze Timer High Temperature SafetyLow Water Safety Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties PM, SR, DVHarvest Control Thermistor Controls and AdjustmentsDefault Dip Switch Settings Harvest Timer dip switch 1 Pump-Out Timer dip switch 3Bin Control Pump-Out Frequency Control dip switch 5Freeze Timer dip switch 9 Bin Control Troubleshooting Control Board Check ProcedureMachine Will Not Start Machine Will Not Shut OffSwitches Control Board ReplacementControl Switch Service SwitchCirculate WashDKM-500BAH Wiring Diagram Timing Chart Page Performance Data 110IV. Service Diagnosis Minute Diagnostic Procedure No Ice Production Diagnostic ChartsIce Making Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Low Ice Production Abnormal IceOther DispensingProblem Possible Cause Remedy Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ARemoval and Replacement of Compressor BrazingRemoval and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of Hot Gas ValveRemoval and Replacement of Evaporator Removal and Replacement of Condenser Removal and Replacement of Thermistor Removal and Replacement of Fan MotorRemoval and Replacement of Inlet Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes Removal and Replacement of Gear MotorRemoval and Replacement of Dispense Switch Removal and Replacement of SolenoidCleaning Procedure Icemaker VI. Cleaning and Maintenance InstructionsCleaning Instructions Sanitizing Procedure Icemaker Cleaning Procedure Bin Sanitizing Procedure BinMaintenance Instructions Preparing the Icemaker for Long StorageExterior Panels Air Filters

DKM-500BAH specifications

The Hoshizaki DKM-500BAH is a high-performing ice maker renowned in the food service industry for its reliability and efficiency. This unit excels in producing crescent-style ice, which is highly sought after for its ability to chill beverages effectively while minimizing dilution. The Hoshizaki reputation for quality is well-reflected in the DKM-500BAH, making it a popular choice in restaurants, bars, and other establishments that demand high ice production capacity.

One of the standout features of the DKM-500BAH is its impressive ice production capability. This model has the capacity to produce up to 500 pounds of ice per day, ensuring that businesses with high-volume demands can meet their needs without interruption. The unit operates on a refrigerant system designed for optimal energy efficiency, which can lower operating costs and contribute to sustainability goals.

The DKM-500BAH utilizes advanced technology, including Hoshizaki's patented ice-making mechanism. This system features a stainless steel evaporator that enhances durability and ice quality. The crescent-shaped ice it produces has a slower melt rate, making it perfect for restaurants and bars that focus on customer experience. Additionally, the unit is equipped with a cycle control that ensures ice is produced consistently.

Another critical aspect of the DKM-500BAH is its user-friendly design. It features a front-facing control panel that allows for easy monitoring and adjustment of settings. A built-in diagnostics system alerts users to potential issues, enabling prompt maintenance and reducing downtime. The removable air filter is another convenience, making it simple to clean and maintain the unit’s efficiency.

Moreover, the construction of the DKM-500BAH is noteworthy. It features a corrosion-resistant stainless steel exterior that ensures longevity and maintains hygiene standards. The unit also has an insulated storage bin that holds up to 250 pounds of ice, making it an efficient solution for busy settings.

In summary, the Hoshizaki DKM-500BAH is a robust ice maker that combines high production capacity, advanced technology, and user-friendly features. Its build quality and efficient performance position it as a leader in the commercial ice-making market, making it an ideal investment for establishments requiring reliable ice supply.
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