Cornelius R-134A service manual Safety Information

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SAFETY INFORMATION

Recognize Safety Information

This is the safety-alert symbol. When you see this symbol on our machine or in this manual, be alert to the potentially of personal injury.

Follow recommended precautions and safe operating practices.

Understand Signal Words

A signal word - DANGER, WARNING, OR CAUTION is used with the safety-alert symbol. DANGER identi- fies the most serious hazards.

Safety signs with signal word DANGER or WARNING are typically near specific hazards.

General precautions are listed on CAUTION safety signs. CAUTION also calls attention to safety mes- sages in this manual.

DANGER

WARNING

CAUTION

Follow Safety Instructions

Carefully read all safety messages in this manual and on your machine safety signs. Keep safety signs in good condition. Replace missing or damaged safety signs. Learn how to operate the machine and how to use the controls properly. Do not let anyone operate the machine without instructions. Keep your machine in proper working condition. Unauthorized modifications to the machine may impair function and/or safety and affect the machine life.

CO2 (Carbon Dioxide) 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. Person- nel exposed to high concentration of CO2 gas will experience tremors which are followed rapidly by loss of consciousness and suffocation.

Shipping, Storing, Or Relocating Unit

CAUTION: Before shipping, storing, or relocating this Unit, the syrup systems must be sanitized and all sanitizing solution must be purged from the syrup systems. All water must also be purged from the plain and carbonated water systems. A freezing ambient temperature will cause residual water remaining inside the Unit to freeze resulting in damage to internal components of the Unit.

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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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