2. Brazing

WARNING

1.R-134a itself is not flammable at atmospheric pressure and temperatures up to 212°F (100°C).

2.R-134a itself is not explosive or poisonous. However, when exposed to high temperatures (open flames), R-134a can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous.

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

4.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-134a as a mixture with pressurized air for leak testing.

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

CAUTION

1.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.

2.When brazing, protect the drier by using a wet cloth to prevent the drier from overheating. Do not allow the drier to exceed 250°F (121°C).

2)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-134a as a mixture with pressurized air for leak testing.

3.Evacuation and Recharge (R-134a)

1)Attach a vacuum pump to the system. Be sure the high-side charging hose is connected to the field-installed high-side access valve.

IMPORTANT

The vacuum level and vacuum pump may be the same as those for current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils.

2)Turn on the vacuum pump, then open the high-side valve on the gauge manifold. Never allow the oil in the vacuum pump to flow backwards.

3)Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period depends on pump capacity.

4)Close the high-side valve on the gauge manifold.

5)Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder. Remember to loosen the connection and purge the air from the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets the requirements of ARI Standard 700 (latest edition) be used.

27

Page 26 Page 28
Page 27
Image 27
Hoshizaki C-100BAF-ADDS service manual Brazing, Evacuation and Recharge R-134a
Page 26 Page 28

C-100BAF-AD, C-100BAF-ADDS specifications

The Hoshizaki C-100BAF-ADDS and C-100BAF-AD are state-of-the-art ice maker models designed to meet the increasing demands of businesses in the food service industry. Known for their high-quality ice production, these machines are ideal for restaurants, bars, and other establishments that require reliable ice-making capabilities.

One of the main features of the Hoshizaki C-100BAF-ADDS and C-100BAF-AD is their production capacity. The machines can produce up to 100 pounds of ice per day, ensuring that your business will have a consistent supply of ice available when needed. The cube design, which creates half-moon-shaped ice, is perfect for beverages, providing excellent cooling properties while minimizing drink dilution.

These ice makers are equipped with advanced technologies that enhance both efficiency and functionality. The dual-sided technology allows for increased speed and improved performance, reducing waiting times and ensuring that ice is readily available. Furthermore, Hoshizaki's cycle-based ice-making process optimizes energy consumption, resulting in reduced operational costs.

The C-100BAF-ADDS includes an innovative integrated ice storage bin that consolidates the footprint of the unit, making it an excellent choice for businesses with limited space. The bin has a capacity of 32 pounds, allowing for adequate storage while maintaining user convenience. The C-100BAF-AD features a separate ice storage bin, providing flexibility depending on the user’s specific layout and requirements.

Durability is another standout characteristic of the Hoshizaki ice makers. They are constructed with high-quality stainless steel materials, which help to prevent rust and maintain hygiene standards. The machine's smooth surfaces facilitate easy cleaning and maintenance, ensuring compliance with health regulations.

In addition to their robust build, these ice makers are designed with user-friendly controls, featuring an easy-to-read digital display. This allows operators to monitor the ice-making process effectively and troubleshoot any issues promptly. Furthermore, these models are designed to operate quietly, minimizing noise pollution in busy environments.

Overall, the Hoshizaki C-100BAF-ADDS and C-100BAF-AD ice makers provide an ideal combination of efficiency, durability, and user-friendly features. For businesses looking for a reliable ice-making solution that can keep up with their demands, Hoshizaki models stand out as top industry choices.
Top Page Image Contents