Operators Instructions, Operating Controls

OPERATORS INSTRUCTIONS

This section covers operating controls, daily pre-operation check, adjustments, replenishing CO2 and syrup sup- plies, and general maintenance to be performed by the Operator on the Cooling Unit.

WARNING: Disconnect electrical power from the Cooling Unit to prevent personal injury before attempting any internal maintenance. Only qualified personnel should service internal components or electrical wiring.

OPERATING CONTROLS

(see Figure 3)

COOLING UNIT POWER SWITCH

Cooling Unit power switch, located on syrup inlet line connection side of the unit, must be in the “ON”(up) posi- tion before the unit will operate.

COOLING UNIT CIRCULATING PUMP POWER SWITCH

Carbonated water circulating pump power switch labeled CIRC MOTOR, located on electrical box under hood, must be in “ON”(up) position before motor will operate.

COOLING UNIT CARBONATOR MOTOR POWER SWITCH

Carbonator motor power power switch labeled CARB MOTOR, located on electrical box under hood, must be in “ON”(up) position before carbonator will operate.

DAILY PRE-OPERATION CHECK

1.Make sure CO2 cylinder primary CO2 regulator assembly 1800-psi gage indicator is not in shaded (“change CO2 cylinder”) portion of the dial. If so, CO2 cylinder is almost empty and must be replaced as instructed.

2.Sufficient syrup supply in all syrup tanks. If not, replenish syrup supply as instructed.

312021002

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.