Hoshizaki KM2000SWF3, KM-2000SRH3, KM-2000SRF3 Removal and Replacement of Expansion Valve

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5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE

IMPORTANT

Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve. Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made.

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 using brazing equipment.

6)Braze the new Expansion Valve, with nitrogen gas flowing at the pressure of 3-4 PSIG.

WARNING

1.Do not heat the wall. Place a steel barrier for protection.

2.Always protect the valve body by using a damp cloth to prevent the valve from overheating. Do not braze with the valve body exceeding 250°F.

7)Install the new Drier.

8)Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.

9)Evacuate the system, and charge it with refrigerant. For water-cooled models, see the Nameplate for the required refrigerant charge. For remote air-cooled models, see the Charge Label in the machine compartment.

10)Attach the Bulb to the suction line in position. Be sure to secure it with clamps and to insulate it.

11)Place the new set of Expansion Valve Covers in position.

12)Replace the panels in their correct positions.

13)Turn on the power supply.

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Contents Model KM-2000SWF3 KM-2000SRF3 KM-2000SWH3 KM-2000SRH3 Hoshizaki AMERICA, INC Contents Maintenance Specifications KM-2000SWF3, KM-2000SWH3 Water-cooledKM-2000SRF3, KM-2000SRH3 Remote air-cooled Condensing Unit Specifications Model URC-20F II. General Information Construction KM-2000SWF3, KM-2000SWH3KM-2000SRF3, KM-2000SRH3 Features of Control Products E Controller Board Controller BoardSOLID-STATE Control Controller BoardPage Beep every 3 sec. = High Evaporator Temperature 127 F Minute Fill CycleHarvest Cycle Freeze CycleControl Products HOSHIZAKI001 Board Control Products HOS-001A Board Page Important Water Valve opening is limited to 6 minutes Important Water Valve opening is limited to 6 minutes Controls and Adjustments Setting Time Setting Frequency Checking the Controller Board Page III. Technical Information KM-2000SRF3, KM-2000SRH3 Wiring Diagrams Timing Chart Page Performance Data KM-2000SRF3, KM-2000SRH3 IV. Service Diagnosis No ICE Production Problem Possible Cause RemedyController Board Problem Possible Cause Remedy Evaporator is Frozen UP ThermistorAbnormal ICE LOW ICE ProductionOthers Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Important Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of HOT GAS Valve and Line Valve Removal and Replacement of Evaporator Important Page Adjustment of Water Regulating Valve WATER-COOLED Model only Page Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes Page Page Cleaning Procedure Cleaning Procedure Page Sanitizing Procedure Following Cleaning Procedure Maintenance
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KM-2000SWH3, KM-2000SRF3, KM-2000SRH3, KM2000SWF3 specifications

The Hoshizaki KM-2000SRH3 and KM-2000SWH3 are two of the latest innovations in the world of ice-making machines, designed for high-demand commercial settings where reliability and efficiency are key. Known for their durability and performance, these machines are ideal for restaurants, bars, hotels, and other businesses that require a steady supply of ice.

One of the standout features of the KM-2000 series is its production capability. Both models are designed to produce a staggering amount of ice—approximately 2,000 pounds per day. This high output ensures that establishments are never left wanting, meeting the needs of peak service hours without interruption.

Hoshizaki has integrated advanced technologies into these machines to enhance efficiency and reduce downtime. The KM-2000SRH3 and KM-2000SWH3 come equipped with a reliable, self-contained refrigerant system that operates efficiently even in warmer environments. This is particularly important for businesses located in hotter climates, as it ensures that ice production remains consistent throughout the year.

Another notable technology included in both models is the unique crescent-shaped ice that they produce. This type of ice is not only aesthetically pleasing but also offers several functional advantages. The crescent shape allows for excellent cooling properties, making it perfect for drinks, while its hardness and density facilitate longer melting times, ensuring that beverages stay chilled for longer periods.

Additionally, Hoshizaki has incorporated a cleaning and sanitizing system in the KM-2000 series, ensuring that the ice produced is safe and hygienic. This built-in feature is crucial for maintaining health and safety standards in food service operations, reducing the need for manual cleaning and increasing operational efficiency.

In terms of design, both the KM-2000SRH3 and KM-2000SWH3 boast a compact footprint, making them suitable for spaces where size is a constraint. Their stainless steel construction not only adds to their durability but also enhances their visual appeal, fitting seamlessly into any commercial kitchen or bar environment.

Overall, the Hoshizaki KM-2000SRH3 and KM-2000SWH3 ice machines represent a convergence of efficiency, technology, and user-friendly design, making them a top choice for businesses that rely heavily on ice as a part of their service offerings. With their high production capabilities, advanced features, and commitment to quality, these models deliver reliable performance that operators can depend on day in and day out.