2)Turn on the Vacuum Pump. Never allow the oil in the Vacuum Pump to flow backward.

3)Allow the Vacuum Pump to pull down to a 29.9" Hg vacuum. Evacuating period de- pends on pump capacity.

4)Close the Low-side Valve and High-side Valve on the Service Manifold.

5)Disconnect the Vacuum Pump, and attach a Refrigerant Service Cylinder to the High-side line. Remember to loosen the connection, and purge the air from the Hose. See the Nameplate for the required refrigerant charge. Hoshizaki recom- mends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.

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

DANGER

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 decom- posed 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 refrig- erant, raising the pressure with nitrogen and using an electronic leak detector.

55

Page 54 Page 56
Page 55
Image 55
Hoshizaki F-1000MWF/-C, F-1000MAF/-C, F-1000MLF/-C, F-1000MRF/-C service manual Brazing
Page 54 Page 56

F-1000MWF/-C, F-1000MRF/-C, F-1000MLF/-C, F-1000MAF/-C specifications

The Hoshizaki F-1000MRF/-C, F-1000MLF/-C, F-1000MAF/-C, and F-1000MWF/-C are exceptional commercial refrigeration units designed for various applications, including food storage and display in restaurants, grocery stores, and catering services. These models stand out for their superior build quality, advanced features, and energy-efficient performance, making them a top choice for businesses that require reliable refrigeration solutions.

One of the flagship features of these Hoshizaki models is their robust construction. They are designed with stainless steel, ensuring durability and ease of cleaning. The exterior is not only aesthetically appealing but also resistant to corrosion and impacts, making them suitable for a busy work environment. The interior is equally well-designed, with rounded corners and smooth surfaces that facilitate sanitization.

The Hoshizaki F-1000 series incorporates advanced cooling technologies, including a highly efficient refrigeration system that uses a combination of environmentally friendly refrigerants. This technology allows for rapid temperature recovery, ensuring that stored products remain at optimal temperatures, which is crucial for maintaining food safety. The models feature digital temperature controls, providing precise monitoring and adjustments for various storage needs.

Energy efficiency is another cornerstone of the F-1000 series. These units are designed to operate with minimal energy consumption, contributing to reduced operational costs. The use of high-efficiency condensers and evaporators enhances heat exchange, leading to lower energy usage while maintaining excellent cooling performance.

Versatility is a defining trait of the F-1000 models. They come in different configurations, such as glass door and solid door options, allowing businesses to select a model that fits their specific storage and display needs. The interior layout is spacious and equipped with adjustable shelving, maximizing storage potential and accommodating various food items.

Additionally, these units are equipped with user-friendly features. The digital display panel allows for easy monitoring of temperatures and system status. The self-diagnostic capabilities notify users of any potential issues, enabling prompt maintenance and reducing downtime.

In summary, the Hoshizaki F-1000MRF/-C, F-1000MLF/-C, F-1000MAF/-C, and F-1000MWF/-C models exemplify the perfect blend of durability, efficiency, and versatility. With cutting-edge technologies, energy-saving performance, and user-friendly designs, these refrigeration units meet the demands of the food service industry and provide reliable storage solutions for a variety of applications.
Top Page Image Contents