5.Adjusting Syrup Flow Regulator -- If water and syrup levels are uneven in the ratio cup, adjust by turning the dispensing valve syrup flow regulator adjusting screw labeled SYRUP as follows.

A.For less syrup, turn the adjusting screw counterclockwise no more than 1/4 turn at a time.

B.For more syrup, turn the adjusting screw clockwise no more than 1/4 turn at a time.

6.Repeat water-to-syrup ratio test and adjust syrup flow regulator as many times as necessary until proper ratio of dispensed drink is achieved.

7.Remove syrup diversion tube assembly from dispensing valve.

8.Install dispensing valve front cover.

CLEANING DROP-IN REFRIGERATION ASSEMBLY CONDENSER COIL

(see Figure 5)

Excessive accumulation of dust, lint, and grease on the drop-in refrigeration assembly condenser coil will restrict air flow through the coil and cause a loss of cooling. Perform the following procedure to clean the condenser coil.

1.Unplug Unit power cord from electrical outlet.

2.Remove hood by loosening screw on top of the hood, then lift the hood straight up off the Unit.

3.Vacuum or use a soft brush to clean the condenser coil. If available, use compressed air to blow dust and debris out of the condenser coil.

4.Clean dust and dirt from around top of the refrigeration assembly.

5.Install hood on the Unit and secure with one screw.

6.Plug Unit power cord into electrical outlet.

CHECKING ICE WATER BATH

(see Figure 5)

A “gurgle”heard from the Unit indicates water level in the water tank is low and more water should be added to the tank for maximum cooling. Before adding more water, ice water bath and ice bank should be checked for cleanliness and the water tank coils checked for excessive mineral deposit build-up.

1.Unplug Unit power cord from electrical outlet.

2.Remove Unit hood by loosening one screw on top of the hood, then lift the hood straight up off the Unit.

3.Remove plug from the drop-in refrigeration assembly platform water fill hole.

4.Using a flashlight, inspect the ice water bath and the ice bank for cleanliness. The ice water bath should be clear and the ice bank should be free of foreign particles.

5.If cleaning of the water tank is necessary, refer to CLEANING WATER TANK in this section.

6.Fill the water tank with clean water until water runs out of the overflow groove on top front of the tank into the drip tray. USE LOW-MINERAL-CONTENT WATER WHERE A LOCAL WATER PROBLEM EXISTS When the water tank is full, the water level in the clear plastic water level tube should be approximately one inch from end of the tube.

7.Install plug in the water fill hole.

8.Install the Unit hood and secure with screw.

9.Plug Unit power cord into electrical outlet.

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Cornelius R-134A service manual Cleaning DROP-IN Refrigeration Assembly Condenser Coil, Checking ICE Water Bath
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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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