Hoshizaki KM-1900SWH/3 Factory Line Set Modification, Pressurized air for leak testing

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d. Tighten the connection with a wrench until it is tight. At this point, the nut has covered most of the threads on the male fitting.

e. Mark a reference line on the female coupling and the remote condenser unit or icemaker panel. Using a backup wrench on the back of the female coupling, tighten the six-sided nut of the female coupling an additional 1/6 turn. See Fig. 14.

3)If you lengthened the line set as outlined in "II.G.4.a)(1) Factory Line Set Modification" and it exceeds 66 feet, see "II.G.5 Refrigerant Charge (Line Set Exceeding 66 Feet)" for proper charging of the unit.

(1)Factory Line Set Modification

1)Recover the line set charge through the Schrader access ports on the Parker quick connect couplings and store it in an approved container. Do not discharge the refrigerant into the atmosphere. Remove the extra line set length or add extra tubing. When adding extra tubing, insulate the additional copper tubes separately. Braze the connections.

2)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace

of refrigerant to the lines through the Schrader access ports on the Parker quick connect couplings (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). WARNING! DO NOT use R-404A as a mixture with pressurized air for leak testing.

3)Evacuate through the Schrader access ports on the Parker quick connect couplings and charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG. Go to step 2 in

"II.G.4.a) Factory Line Set Installation."

b)Field Fabricated Line Set Installation

1)Route a 5/8" OD copper tube discharge line and a 3/8" OD copper tube liquid line between the remote condenser unit and the icemaker. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 12.

Note: The service loop is not considered an oil trap.

CAUTION

1.Ensure that there are no traps and no kinks in the line set.

2.Do not coil extra line set. Fabricate the line set to the proper length.

2)Insulate the two copper tubes separately.

3)Install Parker quick connect couplings on each end. OS-QUICK, a universal quick connect coupling kit available as optional equipment from Hoshizaki America, is recommended. CAUTION! Before brazing, remove the Schrader valve core from the access port. When brazing, protect the coupling by using a wet cloth to prevent the coupling from overheating. Do not use silver alloy or copper alloy containing arsenic.

4)Allow the coupling to cool, then replace the Schrader valve core.

5)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace

of refrigerant to the lines through the Schrader access ports on the Parker quick connect couplings (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). WARNING! DO NOT use R-404A as a mixture with

pressurized air for leak testing.

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Contents Superior Degree Reliability Issued Revised Hoshizaki AMERICA, INC Contents Unit Important Safety InformationSerious injury Indicates important information about the use and careKM-1900SAH air-cooled Specifications Nameplate RatingKM-1900SAH3 air-cooled KM-1900SWH water-cooled KM-1900SWH3 water-cooled KM-1900SRH remote air-cooled KM-1900SRH3 remote air-cooled KM-1900SAH/3 Dimensions/ConnectionsKM-1900SWH/3 Unit in. mm See Fig II. Installation and Operating InstructionsChecks Before Installation How to Remove PanelsLocation SetupIf a Hoshizaki B-800, B-900, or B-1150 storage bin is used Installation of Upper Unit Page Additional Warnings for Remote Air-Cooled Model Electrical ConnectionFor All Models KM-1900SHKM-1900SH3 Location Installation of Remote Condenser UnitChecks Before Installation Line Set SetupFactory Line Set Modification Pressurized air for leak testingDo not USE Thread Sealant Electrical Connection Refrigerant Charge Line Set Exceeding 66 FeetStacking Condenser Unit Water Supply and Drain Connections See , 18, DrainKM-1900SAH/3 KM-1900SRH/3 IcemakerConnection To An Open Drain System Water-Cooled CondenserConnection To a Closed Loop System Connection to a Closed Loop SystemFinal Checklist Startup Cleaning and Sanitizing Instructions III. Cleaning and MaintenanceCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Preparing the Icemaker for Long Storage Maintenance InstructionsDrain the water tank Hoshizaki AMERICA, INC

KM-1900SWH/3, KM-1900SAH/3, KM-1900SRH/3 specifications

The Hoshizaki KM-1900 series, comprising the KM-1900SAH/3, KM-1900SWH/3, and KM-1900SRH/3 models, is recognized in the commercial ice-making industry for its exceptional performance and reliability. These machines are engineered for high efficiency, ensuring that businesses can meet their ice needs without compromising on quality or output.

One of the standout features of the KM-1900 series is its impressive ice production capability. With a production capacity of up to 1900 pounds of ice per day, these machines are designed to cater to high-demand environments such as restaurants, bars, and hotels. The energy-efficient operation of the KM-1900 series not only helps businesses save on electricity costs but also contributes to environmental sustainability, an increasing concern in today’s world.

The machines incorporate a sophisticated air-cooled condenser that aids in maintaining optimal ice production even in warmer conditions. This feature ensures a consistent performance throughout the year, regardless of external temperature fluctuations. Additionally, the KM-1900 models are equipped with a self-cleaning cycle, which simplifies maintenance and extends the longevity of the equipment. This automatic cleaning function helps reduce mineral buildup, thereby guaranteeing the ice’s purity and clarity.

In terms of design, the KM-1900 series showcases a durable stainless-steel exterior, which is both aesthetically pleasing and resistant to corrosion. The sleek design allows for easy integration into any commercial setting. The removable front panels also contribute to easier access for maintenance and service, minimizing downtime.

A significant technological advancement featured in this series is the unique “Kold-Dry” technology, which enhances the freezing process and ensures that the ice produced is harder and lasts longer. This feature is especially beneficial for businesses that require ice to stay intact for extended periods, such as seafood markets or catering services.

Furthermore, the KM-1900SAH/3, KM-1900SWH/3, and KM-1900SRH/3 models come with various ice types. The KM-1900SAH/3 produces traditional cubed ice suitable for drinks, while the KM-1900SWH/3 offers flake ice ideal for perishables. The KM-1900SRH/3 specializes in producing nugget ice, a favorite among beverage enthusiasts.

In summary, the Hoshizaki KM-1900 series stands out for its robust performance, innovative features, energy efficiency, and user-friendly design, making it an ideal choice for any commercial ice-making application.
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