Hoshizaki KM-1301SWH/3, KM-1301SAH/3, KM-1301SRH/3 Removal and Replacement of Expansion Valve

Page 68

7)Remove the compressor. Unpack the new compressor package.

8)Attach the rubber grommets of the prior compressor to the new compressor.

9)Place the compressor in position and secure it using the bolts and washers.

10)Remove the drier, then place the new drier in position.

11)Remove the plugs from the suction, discharge, and process pipes.

12)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

13)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). DO NOT use R-404A as a mixture with pressurized air for leak testing.

14)Evacuate the system and charge it with refrigerant. For air-cooled and water-cooled models, see the nameplate for the required refrigerant charge. For remote air-cooled models, see the rating label inside the icemaker.

15)Connect the terminals and replace the terminal cover in its correct position. On remote air-cooled models, connect the crankcase heater.

16)Replace the panels in their correct positions.

17)Turn on the power supply.

C.Removal and Replacement of Expansion Valve

Moisture in the refrigeration circuit may exceed drier capacity and freeze up at the expansion valve.

CAUTION

1.Always install a new drier every time the sealed refrigeration system is opened.

2.Do not replace the drier until after all other repair or replacement has been made. Install the new drier with the arrow on the drier in the direction of the refrigerant flow.

3.When brazing, protect the valve body and drier by using wet cloths to prevent the valve body and drier from overheating. Do not allow the valve body or drier to exceed 250°F (121°C).

1)Turn off the power supply.

2)Remove the panels.

3)Recover the refrigerant and store it in an approved container.

4)Remove the insulation and the expansion valve bulb on the suction line.

5)Remove the expansion valve cover and disconnect the expansion valve. Place the new expansion valve in position.

6)Remove the drier, then place the new drier in position.

7)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page Page Important Safety Information Serious injuryIndicates important information about the use and care UnitSpecifications Icemaker KM-1301SAH air-cooledKM-1301SAH3 air-cooled KM-1301SWH water-cooled KM-1301SWH3 water-cooled KM-1301SRH remote air-cooled KM-1301SRH3 remote air-cooled Condenser Unit URC-14F Unit inches mmSpecifications II. General Information Construction KM-1301SAH, KM-1301SAH3 air-cooledKM-1301SWH, KM-1301SWH3 water-cooled KM-1301SRH, KM-1301SRH3 remote air-cooled Sequence of Operation Sequence Cycles and ShutdownMinute Fill Cycle Initial Harvest CycleS4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Pump-Out CycleHarvest Cycle ShutdownIce Level Lowered Sequence Flow ChartIcemaker Off Control Board Control Board Layout Control BoardHarvest Backup Timer and Freeze Timer High Temperature SafetyLow Water Safety Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Every 3 secSequence Step Energized Time LEDs are On Components Min Max AvgHarvest Timer S4 dip switch 1 Controls and AdjustmentsDefault Dip Switch Settings S4 Dip Switch Setting Time seconds Inlet Pump-Out Timer S4 dip switch 3Pump-Out Frequency Control S4 dip switch 5 Harvest Pump Timer S4 dip switch Factory Use S4 dip switchFreeze Timer S4 dip switch 9 S4 Dip Switch Setting Pump Motor Time secondsFloat Switch Control S5 dip switch Refill Counter S5 dip switch 2 throughFloat Switch Control SwitchBin Control ThermistorTank Water Tank Valve Wiring Diagrams PressureSwitchAuxiliary Code T-0, U-0 KM-1301SAH air-cooledHigh Pressure Switch 1301SWH water-cooledAuxiliary Code T-0, U-0cKM Water KM-1301SRH3 remote air-cooled Auxiliary Code U-1 and Later a KM-1301SAH air-cooled KM-1301SWH water-cooled KM-1301SRH remote air-cooled KM-1301SAH3 air-cooled and KM-1301SWH3 water-cooled 1301SRH3 remote air-cooled Performance Data 1298 11592090 22201318 13231740 17601333 13001770 18401353 12222010 4791339 11972140 463IV. Service Diagnosis Diagnostic ProcedurePage S4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Shutdown Control Board Check Bin Control Check Float Switch Check and CleaningFloat Switch Check Float Switch Cleaning Thermistor Check No Ice Production Diagnostic ChartsProblem Possible Cause Remedy BC Closed LED Problem Possible Cause Remedy Evaporator is Frozen Up Problem Possible Cause Remedy Low Ice Production Abnormal Ice Other Refrigerant Recovery Removal and Replacement of ComponentsService for Refrigerant Lines Brazing Evacuation and Recharge R-404ARemoval and Replacement of Compressor Removal and Replacement of Expansion Valve Page Removal and Replacement of Evaporator Removal and Replacement of Air-Cooled Condenser Removal and Replacement of Water-Cooled Condenser Removal and Replacement of Remote Air-Cooled Condenser Page Adjustment of Water Regulating Valve water-cooled model Removal and Replacement of Thermistor Removal and Replacement of Inlet Water Valve Removal and Replacement of Pump Motor Removal and Replacement of Control Board VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Maintenance Instructions Preparing the Icemaker for Long StorageRemove the water from the icemaker water supply line Drain the water tank
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KM-1301SWH/3, KM-1301SRH/3, KM-1301SAH/3 specifications

The Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 are advanced ice makers designed for commercial use, addressing a wide variety of needs in restaurants, hotels, and bars. These models are known for their efficiency, durability, and innovative technologies that ensure the production of high-quality ice.

One of the standout features of these units is their ability to produce a high volume of ice, reaching up to 1,300 pounds per day, which is crucial for establishments with heavy ice demands. The machines utilize advanced cooling technology, allowing for faster ice production and minimizing the time required to refill ice bins. This makes them ideal for busy settings where speed and efficiency are paramount.

The KM-1301 series employs a unique stainless steel exterior that not only ensures longevity and resistance to corrosion but also enhances the aesthetic appeal of any commercial kitchen or bar. The interior is designed for easy cleaning, helping to maintain hygiene standards vital for food safety.

These ice makers utilize the proprietary Hoshizaki Cubelet Ice system, producing small, chewy ice cubes that are perfect for various beverages and food displays. The advanced design of the ice-making mechanism ensures that ice is formed quickly and efficiently, reducing energy consumption. Additionally, Hoshizaki’s CycleSaver technology optimizes the production process by reducing the amount of water used, making these machines environmentally friendly.

Another characteristic is their self-diagnostic capability, which allows for real-time monitoring of unit performance and quicker troubleshooting, minimizing downtime. The built-in alerts notify operators of any issues or maintenance needs, ensuring that the ice-making process remains uninterrupted.

The KM-1301 series also provides user-friendly controls that allow easy adjustments and monitoring of ice production settings. This flexibility enables businesses to meet varying ice demands based on seasonality or special events.

In summary, the Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 ice makers are exemplary choices for commercial ice production. With their high output, durable design, energy efficiency, innovative technologies, and user-friendly features, they cater effectively to the rigorous demands of the foodservice industry while maintaining a commitment to quality and sustainability.
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