Table 1. Design Data (cont’d)

Ambient Operating Temperature

Electrical Requirements:

40°F to 100°F

See Unit Nameplate

DROP--IN REFRIGERATION ASSEMBLY DATA

Weights:

No Ice Bank

With Ice Bank

103pounds

142pounds

Refrigerant Requirement (R-134A Refrigerant)

See Unit Nameplate

DESCRIPTION

IMPORTANT: To the user of this manual - This manual is a guide for installing, operating, and maintaining this equipment. Refer to the Table of Contents for page location for detailed information pertaining to questions that arise during installation, operation, service, or maintenance of this equipment.

CAUTION: Before shipping, storing, or relocating this Unit, the syrup systems must be

sanitized and all sanitizing solution must be purged from the syrup systems. All water must also be purged from the plain and carbonated water systems. A freezing ambient

environment will cause residual water in the Unit to freeze resulting in damage to internal components.

WARNING: CO2 displaces oxygen. Strict attention must be observed in the prevention of CO2 (carbon dioxide) gas leaks in the entire CO2 and soft drink system. If a CO2 gas leak is suspected, particularly in a small area, immediately ventilate the contaminated area before

attempting to repair the leak. Personnel exposed to high concentration of CO2 gas will experience tremors which are followed rapidly by loss of consciousness and suffocation.

The Sentry III-A Post--Mix Cooling Unit with R-134A Refrigerant (see Figure 1) is designed to provide cooled syrup, carbonated water, and plain water to the dispensing station(s) connected to the cooling unit through an insulated python (length as ordered).

The lower cabinet of the Cooling Unit consist of carbonated water, plain water, and syrup coils located in the water tank, a carbonator, and a carbonated water circulating pump. The Cooling Unit utilizes a drop--in refrigera- tion assembly which contains the refrigeration compressor and a condenser coil and fan assembly as shown in Figure 3

An optional Cooling Unit Stand (P/N 309802069) is available to elevate the Cooling Unit up off the floor.

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Cornelius R-134A manual Description, DROP--IN Refrigeration Assembly Data
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R-134A specifications

Cornelius R-134A is a refrigerant commonly used in various cooling and air conditioning applications. It belongs to the hydrofluorocarbon (HFC) family and has become a favored alternative to many ozone-depleting substances. Unlike its predecessors, R-12, which has been phased out due to its detrimental effects on the ozone layer, R-134A offers a more environmentally friendly solution, albeit still having global warming potential.

One of the main features of R-134A is its favorable thermodynamic properties. It exhibits a low boiling point of approximately -26.3°C (-15.3°F), making it suitable for various refrigeration applications, including automotive air conditioning, commercial cooling systems, and domestic refrigerators. Its efficiency is regarded as superior, allowing for quick heat absorption and dissipation. This efficiency translates into energy savings, ultimately benefiting both consumers and manufacturers.

R-134A also boasts a relatively high vaporization heat, demonstrating its effectiveness in heat transfer processes. The low toxicity and non-flammability of R-134A further enhance its appeal, as it poses minimal risk during handling and application. This characteristic makes R-134A safer for technicians and users compared to older refrigerants, which presented higher health hazards.

Within modern technologies, R-134A plays a crucial role in both chiller systems and heat pump applications. It is compatible with various lubricants, allowing manufacturers to utilize R-134A in existing systems with minimal modifications. However, it is essential to use the correct type of oil, as mixing different types can lead to system inefficiencies and potential failure.

Despite its advantages, R-134A has a global warming potential of around 1,430 times greater than carbon dioxide, prompting the refrigerant industry to look for alternatives. Newer refrigerants, such as R-1234yf, offer lower environmental impact, driving a shift towards more sustainable options.

In conclusion, Cornelius R-134A remains a widely used refrigerant known for its efficiency, safety, and effectiveness in heat transfer. While it has played a significant role in the refrigeration and air conditioning industries, the ongoing search for eco-friendly alternatives highlights the need for continued innovation and adherence to environmental standards.
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