Hoshizaki DKM-500BAH Switches, Control Board Replacement, Control Switch, Service Switch, Drain

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3)Check the 115 volt input at the 10-pin connector. Check the brown wire at pin #10 to a white neutral wire for 115 volts. (Always choose a white neutral wire to establish a good neutral connection when checking voltages.) A jumper also feeds 115 volts into pin #7. If no voltage is present, check the 115 volt supply circuit.

4)The output test switch S3 provides a relay sequence test. With the control switch in the OFF position, place S3 ON and then move the control switch to the ICE position. The correct lighting sequence should be none, 2, 3, 4, 1, and 4, normal sequence every 5 seconds. Components (e.g., the compressor) will cycle during the test. Note that the order of the relays from the outer edge of the board is 1, 4, 3, 2.

Note: If the LEDs light in a different sequence or the 5–second interval does not occur, the control board is bad and should be replaced.

5)After checking the sequence, place S3 back in the OFF position. The S3 switch must remain in the OFF position during normal operation. This completes the output test and the unit is now in the 1 minute fill cycle.

6.Control Board Replacement

The application switch located between relay X3 & X4 must be set to match the original board application. Place this switch in the ALP position if there is no white wire supplied to the K1 connector. If there is a white wire, place the switch in the C position. If this switch is placed in the wrong position either the compressor contactor will remain energized with the control switch OFF or the unit will not start.

The dip switches should be adjusted to the factory default settings as outlined in this manual. 8 must remain in the OFF position.

D. Switches

Two control switches are used to control operation. These switches are referred to as the "control switch" and the "service switch" and are located on the control box.

1. Control Switch

The control switch has three positions: OFF for power off; ICE for icemaking, and SERVICE to activate the service switch.

2. Service Switch

When the control switch is in the SERVICE position, the control switch supplies power to the service switch and the machine is in service mode. The service switch has three positions: DRAIN, CIRCULATE, and WASH. See the information below for details of each function.

Note:

1.When the service switch is activated, power is supplied to the water pump in all three positions.

2.When the control switch is in the OFF position or in the ICE position, the service switch has no power and can be left in any position.

a)DRAIN

This model utilizes a pump-out drain system. When the service switch is active and placed in the DRAIN position, power is supplied to the pump, service relay and drain valve.

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Contents DKM-500BAH Hoshizaki AMERICA, INC Contents Page DKM-500BAH SpecificationsDKM-500BAH II. General Information ConstructionSequence of Operation Cycle DKM-500BAH Sequence Flow Chart and Component OperationControl Board Control Board Control Products E Control BoardControl Board Layout High Temperature Safety Harvest Backup Timer and Freeze TimerLow Water Safety Maximum Water Supply Period 6 minutesPM, SR, DV LED Lights and Audible Alarm SafetiesHarvest Control Thermistor Controls and AdjustmentsDefault Dip Switch Settings Pump-Out Timer dip switch 3 Harvest Timer dip switch 1Bin Control Pump-Out Frequency Control dip switch 5Freeze Timer dip switch 9 Control Board Check Procedure Bin Control TroubleshootingMachine Will Not Start Machine Will Not Shut OffControl Board Replacement SwitchesControl Switch Service SwitchWash CirculateDKM-500BAH Wiring Diagram Timing Chart Page 110 Performance DataIV. Service Diagnosis Minute Diagnostic Procedure No Ice Production Diagnostic ChartsIce Making Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Abnormal Ice Low Ice ProductionDispensing OtherProblem Possible Cause Remedy Service for Refrigerant Lines Removal and Replacement of ComponentsRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of CompressorRemoval and Replacement of Drier Removal and Replacement of Hot Gas Valve Removal and Replacement of Expansion ValveRemoval and Replacement of Evaporator Removal and Replacement of Condenser Removal and Replacement of Fan Motor Removal and Replacement of ThermistorRemoval and Replacement of Pump Motor Removal and Replacement of Inlet Water ValveRemoval and Replacement of Gear Motor Removal and Replacement of Spray TubesRemoval and Replacement of Solenoid Removal and Replacement of Dispense SwitchCleaning Procedure Icemaker VI. Cleaning and Maintenance InstructionsCleaning Instructions Sanitizing Procedure Icemaker Sanitizing Procedure Bin Cleaning Procedure BinPreparing the Icemaker for Long Storage Maintenance InstructionsExterior 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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