CLEANING WATER TANK

(see Figure 5 and 8)

1.Unplug Unit power cord from electrical outlet.

2.Shut off plain water supply to the Unit.

3.Note pressure setting on the primary CO2 regulator for the carbonator, then turn the regulator adjusting screw to the left (counterclockwise) until gage reads 0-psig.

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

5.Disconnect the drop-in refrigeration assembly power cord from the Unit power cord.

6.Disconnect the dispensing valves power cord from the drop-in refrigeration assembly mating power cord.

7.Disconnect the carbonated water tank sensor leads power cord from the drop-in refrigeration assembly mating power cord.

8.Remove screw securing the carbonated water tank access hole cover, then remove the cover for access to the carbonated water tank relief valve.

9.Pull up on the carbonated water tank relief valve to release CO2 gas pressure from the tank and the car- bonated water system.

10.Disconnect the plain water inlet and the carbonated water outlet lines from the carbonator water pump.

11.Remove four hex nuts securing the drop-in refrigeration assembly in the Unit lower housing.

12.Very carefully, lift the drop-in refrigeration assembly up and out of the Unit lower housing.

CAUTION: Never use an ice pick or other instrument to remove ice from the drop-in refrigeration assembly evaporator coils. Such practice can result in a punctured refrigeration circuit.

13.Allow ice bank to melt. Hot water may be used to speed melting.

14.Use a fiber brush and carefully clean mineral deposit build-up from the agitator motor shaft and the ice bank sensing bulb.

15.Route the water tank drain hose to a drain. Remove plug from end of the drain hose and allow the water tank to drain.

16.Wash inside of the water tank and the drop-in refrigeration assembly evaporator coils, then rinse with clean water.

17.Install plug in end of the water tank drain hose.

18.Install the drop-in refrigeration assembly in the Unit by reversing the removal procedure.

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

20.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.

21.Install plug in the drop-in refrigeration assembly platform water fill hole.

22.Turn the primary CO2 regulator adjusting screw to the right (clockwise) until the gage indicates pressure setting noted in step 3 preceding.

23.Restore plain water supply to the Unit. Check for CO2 and water leaks and repair if evident.

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Cornelius R-134A service manual Cleaning Water Tank
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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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