Cornelius R-134A service manual Adjusting Dispensing Valves Water Flow Rate, SF-1 Dispensing Valve

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NOTE: To readjust CO2 regulator to a lower setting, loosen adjusting screw lock nut, then turn screw to the left (counterclockwise) until pressure gage reads 5 psi lower than new setting will be. Turn the ad- justing screw to the right (clockwise) until the gage registers new setting, then tighten the lock nut.

Adjusting Carbonator CO2 Regulator.

Adjust primary CO2 regulator (regulator controls Unit built-in cold carbonator CO2 pressure) to a nominal 80 psig. Check for CO2 leaks and repair if evident. INLET CO2 PRESSURE TO CARBONATOR MUST NOT EXCEED 125 PSIG.

Sugar Syrup Tanks Secondary CO2 Regulator.

Adjust sugar syrup tanks secondary CO2 regulator with 100 psi gage at 40 psig for syrup lines up to 10 feet in length plus one pound for each additional length of 10 feet, plus one pound for each 2 feet of vertical lift. For example; if syrup line total length is 30 feet and total vertical lift is 6 feet, then 40 psig + 2 psig (1-pound for ev- ery 10 feet of length over 10 feet which is 20 feet) + 3 psig (1 pound for every 2 feet of vertical lift which is 6 feet); total equals 40 + 2 + 3 = 45 psig CO2 regulator setting. Loosen lock nut on CO2 regulator adjusting screw, turn adjusting screw to the right (clockwise) until gage registers desired pressure, then tighten lock nut.

Low-Calorie (Diet) Syrup Tank Secondary CO2 Regulator

Adjust low-calorie (diet) soft drink tank secondary CO2 regulator with 30 psi gage to 10 psig for syrup lines up to 30 feet in length. Syrup lines longer than 30 feet in length may require a slightly higher CO2 regulator setting of 12 psig maximum. Excessive CO2 pressure may cause low-calorie syrup carbonation resulting in foam.

ADJUSTING DISPENSING VALVES WATER FLOW RATE

SF-1 Dispensing Valve.

(see Figure 6)

1.Remove acorn nut securing the dispensing valve cover, then remove the cover to expose the valve water and the syrup flow controls.

2.Remove dispensing valve nozzle by turning nozzle counterclockwise and pulling down.

3.Remove syrup diffuser by pulling straight down.

ADJUSTABLE WATER

ADJUSTABLE SYRUP

FLOW REGULATOR

FLOW REGULATOR

 

NOZZLE

SYRUP DIVERSION

TUBE ASS’Y (P/N 319540000)

WATER

CHAMBER

RATIO CUP (P/N 311100000)

FIGURE 6. SF-1 DISPENSING VALVE

23

312027000

 

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Contents Installation/Service Manual This Document Contains Important InformationTable of Contents Table of Contents cont’d Troubleshooting Refrigeration System Compressor Operates Continuously but does not FormSafety Information Page This page Left Blank Intentionally General Description Unit 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 Unpacking and Inspection Identification of LOOSE-SHIPPED PartsInstalling Unit Connecting Plain Water Source Lines to UnitSelecting Location Cutting Hole in CountertopSyrup Inlet Supply Line Connections SIX-FLAVOR Unit Shown Connecting Syrup Source Lines to Unit Connecting CO2 Source Line to Unit Preparing Unit for OperationSealing Unit Base to Countertop Fill Water Tank and Start Refrigeration SystemUnit Operation UnitAdjust WATER-TO-SYRUP Ratio Brix of Dispensed Product 312027000 Operating Controls Daily PRE-OPERATION CheckAdjustments Cleaning and SanitizingUnit Operation Replenishing CO2 SupplyChecking ICE Water Bath Cleaning CO2 GAS Check ValvesSanitizing Syrup Systems This page Left Blank Intentionally Front Access Panel Removal Preparing Unit for SHIPPING, STORING, or RelocatingHood and Front Panel Removal Periodic InspectionDispenser Components Adjusting Dispensing Valves Water Flow Rate SF-1 Dispensing ValveUF-1 Dispensing Valve Adjusting WATER-TO-SYRUP Ratio Brix of Dispensed Product Cleaning DROP-IN Refrigeration Assembly Condenser Coil Cleaning Water Tank Water Tank Wash Syrup Systems Sanitizing POST-MIX Syrup SystemsFlush Syrup Systems Sanitize Syrup Systems Water Flush Syrup SystemsPurge Water OUT of Syrup Systems Restore Operation 312027000 Water Strainer Screen and DOUBLE-LIQUID Check Valve Liquid Check Valve Assembly Cleaning CO2 System CO2 GAS Check Valves Syrup Flavor ChangeSyrup 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 WATER-TO-SYRUP Ratio Troubleshooting POST-MIX System SystemTOO LOW or TOO High Dispensed Product Carbonation TOO LOWComes OUT Dispensing Valve Clear But Foams in CUP or GlassProduces Foam AS IT Leaves Dispensing VALVE.CONT’D No Product DispensedFrom ALL Dispensing ValvesTroubleshooting Refrigeration System Compressor Operates Continuously but doesNot 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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