Cornelius R-134A service manual Troubleshooting POST-MIX System System, WATER-TO-SYRUP Ratio

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TROUBLESHOOTING

IMPORTANT: Only qualified personnel should service internal components or electrical wiring.

WARNING: If repairs are to be made to a product system, remove quick disconnects from the applicable product tank, then relieve the system pressure before proceeding. If repairs are to be made to the CO2 system, stop dispensing, shut off the CO2 supply, then relieve the

system pressure before proceeding. If repairs are to be made to the refrigeration system, make sure electrical power is disconnected from the unit.

TROUBLESHOOTING POST-MIX SYSTEM SYSTEM

Trouble

Probable Cause

Remedy

WATER-TO-SYRUP “RATIO”

A. Dispensing valve syrup flow

A. Adjust Water-to-Syrup “Ratio” as

TOO LOW OR TOO HIGH

control not properly adjusted.

instructed.

B.Syrup Tanks System. B. Adjust CO2 regulator for syrup

CO2 gas pressure to syrup

tanks as instructed.

tanks insufficient to push syrup

 

out of tanks.

 

Bag-in-Box Syrup System.

CO2 gas pressure to syrup pumps insufficient to operate pumps.

Adjust CO2 regulator for syrup pumps as instructed.

ADJUSTMENT OF DISPENSING VALVE SYRUP FLOW CONTROL DOES NOT INCREASE TO DESIRED WATER-TO-SYRUP “RATIO”.

A.No syrup supply.

B.Syrup Tanks System.

Syrup tanks CO2 regulator out of adjustment.

Syrup Bag-in-Box System.

Syrup pumps CO2 regulator out of adjustment.

C.Dispensing valve syrup flow control syrup or syrup line restricted.

D.Improper syrup Baume.

E.Inoperative dispensing valve syrup flow control.

F.Tapered gasket inside tube swivel nut connection distorted from being overtightened restricting syrup flow.

A.Replenish syrup supply as instructed.

B.Adjust CO2 regulator for syrup tanks as instructed.

Adjust syrup pumps CO2 regulator as instructed.

C.Sanitize syrup system as instructed.

D.Replace syrup supply as instructed.

E.Repair dispensing valve syrup flow control.

F.Replace tapered gasket. Make sure it is properly seated.

312027000

42

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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 OperationSanitizing Syrup Systems Cleaning CO2 GAS Check ValvesChecking ICE Water Bath 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 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 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 TOO LOW or TOO High Troubleshooting POST-MIX System SystemWATER-TO-SYRUP Ratio 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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