Cornelius R-134A service manual Unit Operation

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3.Install plug in water fill hole.

4.115 VAC, 60 HZ Units.

Make sure the main power switch on right side of the Unit (see Figure 5) is in the “OFF”position. 115 VAC, 60 HZ Units and 230 VAC, 50 HZ Units.

Make sure the carbonator water pump motor power switch located on the drop-in refrigeration assembly electrical control box (see Figure 5) is in the “OFF”position.

WARNING: Unit must be electrically grounded to avoid possible fatal electrical shock or serious injury to the operator. Unit power cord is equipped with a three-prong plug. If a three-hole (grounded) electrical outlet is not available, use an approved method to ground

the Unit.

5.Plug Unit power cord into a properly grounded electrical outlet.

6.115 VAC, 60 HZ Units.

A.Plug Unit power cord into an accessible and properly grounded electrical outlet with GFCI (ground fault circuit interrupt).

B.Place Unit main power switch on right side of the Unit in the “ON”position. The compressor, condens- er fan motor, and agitator motor will start and begin forming an ice bank. When full ice bank has been formed, the compressor and condenser fan motor will stop but the agitator motor will continue to oper- ate circulating ice water bath in the water tank.

7.230 VAC, 50 HZ Units.

A.Plug Unit power cord into an accessible and properly grounded electrical outlet with ELCB (earth leakage circuit breaker). The compressor, condenser fan motor, and agitator motor will start and begin forming an ice bank. When full ice bank has been formed, the compressor and condenser fan motor will stop but the agitator motor will continue to operate circulating ice water bath in the water tank.

UNIT OPERATION

WARNING: CO2 displaces oxygen. Strict attention must be observed in the prevention of CO2 (carbon dioxide) gas leaks in the entire CO2 and soft drink system. If a CO2 gas leak is suspected, particularly in a small area, immediately ventilate the contaminated area before

attempting to repair the leak. Personnel exposed to high concentration of CO2 gas will experience tremors which are followed rapidly by loss of consciousness and suffocation.

CAUTION: Before opening CO2 cylinder shutoff valve, turn secondary CO2 regulators adjusting screws to the left (counterclockwise) until all tension is relieved from adjusting screws springs.

1.Open (counterclockwise) the CO2 cylinder shutoff valve slightly to allow the lines to slowly fill with gas, then open the valve fully to back-seat the valve. (back-seating the valve prevents leakage around the valve shaft). Check for CO2 leaks.

2.Adjust CO2 regulator (regulator that controls the Unit built-in cold carbonator CO2 pressure) as instructed in the SERVICE AND MAINTENANCE section of this manual. Check for CO2 leaks and repair if evident..

312027000

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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 InspectionCutting Hole in Countertop Installing UnitConnecting Plain Water Source Lines to Unit Selecting LocationSyrup Inlet Supply Line Connections SIX-FLAVOR Unit Shown Connecting Syrup Source Lines to Unit Fill Water Tank and Start Refrigeration System Connecting CO2 Source Line to UnitPreparing Unit for Operation Sealing Unit Base to CountertopUnit Unit OperationAdjust WATER-TO-SYRUP Ratio Brix of Dispensed Product 312027000 Daily PRE-OPERATION Check Operating ControlsReplenishing CO2 Supply AdjustmentsCleaning and Sanitizing Unit OperationChecking ICE Water Bath Cleaning CO2 GAS Check ValvesSanitizing Syrup Systems This page Left Blank Intentionally Periodic Inspection Front Access Panel RemovalPreparing Unit for SHIPPING, STORING, or Relocating Hood and Front Panel RemovalDispenser 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 Wash Syrup Systems Sanitizing POST-MIX Syrup SystemsFlush 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 BAG-IN-BOX Syrup System Cleaning CO2 System CO2 GAS Check ValvesSyrup Flavor Change Syrup Tank 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 Dispensing Valve Clear But Foams in CUP or Glass Dispensed ProductCarbonation TOO LOW Comes OUTValves Produces Foam AS ITLeaves Dispensing VALVE.CONT’D No Product Dispensed From ALL DispensingTroubleshooting Refrigeration System Agitator Motor not Compressor OperatesContinuously but does Not Form Sufficient ICE BankWarranty 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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