Hoshizaki F-450MAH-C service manual Brazing

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6)A liquid charge is recommended for charging an R-404A system. Invert the service cylinder. Open the high-side, service manifold valve.

7)Allow the system to charge with liquid until the pressures balance.

8)If necessary, add any remaining charge to the system through the low-side. Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low-side access port with the unit running.

9)Close the two refrigerant access valves, and disconnect the hoses and service manifold.

10) Cap the access valves to prevent a possible leak.

2. Brazing

WARNING

1.Refrigerant R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F.

2.Refrigerant R-404A itself is not explosive or poisonous. However, when exposed to high temperatures (open flames) R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous.

3.Always recover the refrigerant and store it in an approved container. Do not discharge the refrigerant into the atmosphere.

4.Do not use silver alloy or copper alloy containing arsenic.

5.Do not use R-404A as a mixture with pressurized air for leak testing. Refrigerant leaks can be detected by charging the unit with a little refrigerant, raising the pressure with nitrogen and using an electronic leak detector.

Note: All brazing-connections are clear-paint coated. Sandpaper the brazing-connec tions before unbrazing the components. Use a good abrasive cloth to remove coating.

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Contents Modular Flaker Models 450MAH-C Hoshizaki AMERICA, INC Contents Specifications 1. F-450MAH Water TEMP. F450MAH-C II. General Information Construction Control Box Layout Timer Board Timer BoardSolid-State Control Sequence Part Code Page Page Wiring Diagram 450MAH450MAH-C Sequence of Electrical Circuit Page Compressor starts about 60 sec. after gear motor starts Page Low water except water-cooled model Page Page Page Page Page Timing Chart Gear Motor Relay OFF FAN Motor Flush ICE OFF Upper Lower Bottom Performance Data ICE Production883 891 898 IV. Service Diagnosis No Ice Production Problem Possible Cause Remedy Problem Possible Cause Remedy Low Ice Production Other Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of Evaporator Assembly CutterExtruding Head AugerBearing-Lower and Mechanical Seal Gear MotorRemoval and Replacement of Fan Motor Removal and Replacement of Control Water ValveRemoval and Replacement of Flush Water Valve VI. Cleaning and Maintenance Preparing the Icemaker for Long StorageCleaning and Sanitizing Instructions Cleaning SolutionCleaning Procedure Sanitizing Solution Sanitizing Procedure InitialSanitizing Procedure Final Page Maintenance Instructions

F-450MAH-C, F-450MAH specifications

Hoshizaki F-450MAH and F-450MAH-C are advanced ice machine models designed for commercial use, ensuring high efficiency and reliability in providing ice for a variety of foodservice and hospitality applications. These models are recognized for their streamlined operation and innovative technology, making them a preferred choice for many establishments.

One of the standout features of the Hoshizaki F-450MAH is its impressive ice production capacity. The machine can produce up to 525 pounds of crescent cube ice daily, meeting the high demands of busy restaurants, bars, hotels, and catering services. The ice produced is not only uniform in size but is also perfect for mixed drinks, chilling beverages, and food display applications.

The F-450MAH and its counterpart, the F-450MAH-C, are equipped with an advanced water-cooled condenser, optimizing performance even in challenging environments. This technology allows the machines to operate efficiently, minimizing energy consumption and enhancing overall performance. Additionally, these models feature a self-cleaning function that reduces maintenance time and improves hygiene by automatically flushing water lines and purging scale buildup.

Hoshizaki prioritizes durability and reliability in its designs, and the F-450MAH is no exception. The machine is constructed from high-quality stainless steel, ensuring resistance to corrosion and easy cleaning. Furthermore, the interior of the ice bin is designed to be easy to access, allowing quick retrieval of ice while maintaining optimal hygiene standards.

In terms of usability, the F-450MAH and F-450MAH-C come with a user-friendly digital control panel that provides real-time information on ice production and machine status. Operators can easily monitor performance and make adjustments as necessary, enhancing operational efficiency.

The Hoshizaki F-450MAH-C variant is tailored for those in need of a modular unit. It is designed to be stacked with compatible storage bins or dispensers, offering flexibility in installation and ice storage solutions. This modularity allows businesses to customize their ice-making operations according to specific needs while maximizing space.

In summary, the Hoshizaki F-450MAH and F-450MAH-C are exceptional ice machines that combine high production capacity, advanced technologies, and robust construction. These models offer an excellent solution for businesses in the foodservice industry, ensuring a consistent supply of high-quality ice while reducing operational costs and maintenance efforts. With their reliable performance and user-friendly features, they are regarded as a top choice in the commercial ice machine market.
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