GENERAL MAINTENANCE

ADJUSTMENTS

ADJUSTING CO2 REGULATORS

The Operator must first check the CO2 supply to make sure it is adequate. Determine by looking at the CO2 cylinder primary CO2 regulator assembly 1800-psi gage as described in “Daily Pre-Operation Check”. Ranges for adjusting CO2 regulators are as follows: 80-psi minimum to a maximum of 125-psi for the carbonator primary CO2 regulator, 55 to 60-psi for sugar syrup tanks CO2 regulator, and 12-psi for diet syrup tank CO2 regulator. Refer to step 2 of “Maintenance Schedule”.

ADJUSTING CARBONATOR WATER TANK LIQUID LEVEL

The carbonator water tank liquid level (40 to 60-ounces) pump cut-in and cut-out were adjusted at the factory and should require no further adjustment. If incorrect adjustment is suspected, check and make necessary ad- justments as instructed in Service Manual (P/N 312021-004). Refer to step 3 of “Maintenance Schedule”.

SANITIZING SYRUP SYSTEMS

The syrup systems should be sanitized every 90-days as instructed in this manual. Refer to step 4 of “Mainte- nance Schedule”.

CHECKING ICE WATER BATH

(see Figure 3

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

Person to perform the cleaning procedure. Refer to step 5 of “Maintenance Schedule”. Add more water to the water tank as follows:

1.Place Cooling Unit power switch in “OFF”(down) position.

2.Remove top screw from ground strap securing hood to Cooling Unit.

3.Remove acorn nut securing hood on Unit, then lift hood straight up to remove.

4.Remove plug from drop-in refrigeration assembly water fill hole.

5.Using flashlight, inspect ice water bath and ice bank for cleanliness. Ice water bath should be clear and ice bank free of foreign particles.

6.If cleaning of water tank is necessary, call a Service Person to perform the cleaning procedure.

7.Fill water tank with clean water until water runs out of the water tank overflow tube. USE LOW-MINERAL-

CONTENT WATER WHERE A LOCAL WATER PROBLEM EXIST.

8.Install plug in water fill hole.

9.Install Cooling Unit hood and secure with acorn nut.

10. Install screw in hood ground strap to secure strap to hood.

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Cornelius R-134A manual General Maintenance, Adjustments, Sanitizing Syrup Systems, 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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