Cornelius R-134A service manual UF-1 Dispensing Valve

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4.Install syrup separator on dispensing valve in place of the nozzle.

5.Measure the water flow rate by dispensing water into a graduated cup for a set period of time. Factory-set flow rate is approximately 1.25 ounces per second.

6.Adjust the water flow control adjusting screw clockwise for a greater flow or counterclockwise for lesser flow. Limit your adjustment to 1/4 turn at a time, then recheck the flow rate. Only the water flow rate is to be adjusted now. Syrup flow rate is adjusted in the Water-to Syrup “Ratio”(Brix) Adjustment section.

UF-1 Dispensing Valve

(see Figure 7)

1.Remove cover from the dispensing valve by lifting the front cover up 1/4 inch and pulling forward.

2.Install syrup diversion tube assembly on the dispensing valve by pushing rubber end of the syrup diversion tube onto the syrup outlet of the inner nozzle.

3.Measure the water flow rate by dispensing water into a graduated cup for a set period of time.

NOTE: Adjusting screw stops are built into the valve to prevent leakage when the screws are adjusted too far clockwise. Stop adjusting clockwise when turning resistance increases. Turn the screw coun- terclockwise 1--1/2 turns after the stop are contacted.

4.Turn the water flow regulator adjusting screw to the left (counterclockwise) to decrease the water flow rate or turn the adjusting screw to the right (clockwise) to increase the water flow rate, then recheck the flow rate. Adjustments should be no more than 1/4 turn at a time.

5.Remove syrup diversion tube from the dispensing valve, then install cover on the dispensing valve.

WATER FLOW

REGULATOR

INNER NOZZLE

Counterclockwise

to Decrease

Clockwise to Increase

SYRUP FLOW

REGULATOR

NOZZLE

SYRUP DIVERSION

TUBE

RATIO CUP

FIGURE 7. UF-1 DISPENSING VALVE

312027000

24

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Contents This Document Contains Important Information Installation/Service ManualTable of Contents Table of Contents cont’d Compressor Operates Continuously but does not Form Troubleshooting Refrigeration SystemSafety Information Page This page Left Blank Intentionally Unit Description General DescriptionWarranty Reference Information Theory of Operation Flow Diagram FIVE-FLAVOR Unit with BUILT-IN Cold Carbonator Flow Diagram SIX-FLAVOR Unit with BUILT-IN Cold Carbonator This page Left Blank Intentionally Identification of LOOSE-SHIPPED Parts Unpacking and InspectionConnecting Plain Water Source Lines to Unit Installing UnitSelecting Location Cutting Hole in CountertopSyrup Inlet Supply Line Connections SIX-FLAVOR Unit Shown Connecting Syrup Source Lines to Unit Preparing Unit for Operation Connecting CO2 Source Line to UnitSealing Unit Base to Countertop Fill Water Tank and Start Refrigeration SystemUnit Unit OperationAdjust WATER-TO-SYRUP Ratio Brix of Dispensed Product 312027000 Daily PRE-OPERATION Check Operating ControlsCleaning and Sanitizing AdjustmentsUnit Operation Replenishing CO2 SupplySanitizing Syrup Systems Cleaning CO2 GAS Check ValvesChecking ICE Water Bath This page Left Blank Intentionally Preparing Unit for SHIPPING, STORING, or Relocating Front Access Panel RemovalHood and Front Panel Removal Periodic InspectionDispenser Components SF-1 Dispensing Valve Adjusting Dispensing Valves Water Flow RateUF-1 Dispensing Valve Adjusting WATER-TO-SYRUP Ratio Brix of Dispensed Product Cleaning DROP-IN Refrigeration Assembly Condenser Coil Cleaning Water Tank Water Tank Flush Syrup Systems Sanitizing POST-MIX Syrup SystemsWash Syrup Systems Water Flush Syrup Systems Sanitize Syrup SystemsPurge Water OUT of Syrup Systems Restore Operation 312027000 Water Strainer Screen and DOUBLE-LIQUID Check Valve Liquid Check Valve Assembly Syrup Flavor Change Cleaning CO2 System CO2 GAS Check ValvesSyrup Tank System BAG-IN-BOX Syrup SystemWiring Schematic for Electronic ICE Bank Control Optional 560001023 301112002 301112002 Wiring Diagram SF-1 Dispensing Valve This page Left Blank Intentionally TOO LOW or TOO High Troubleshooting POST-MIX System SystemWATER-TO-SYRUP Ratio Carbonation TOO LOW Dispensed ProductComes OUT Dispensing Valve Clear But Foams in CUP or GlassLeaves Dispensing VALVE.CONT’D No Product Dispensed Produces Foam AS ITFrom ALL Dispensing ValvesTroubleshooting Refrigeration System Continuously but does Compressor OperatesNot Form Sufficient ICE Bank Agitator Motor notWarranty Page One Cornelius Place Anoka, Minnesota 612 800
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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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