Cornelius R-404A REFRIGERANT service manual Freeze Cylinders Manual or Automatic Defrost Systems

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‘‘CO2 OUT’’ Fault Message.

‘‘CO2 OUT’’ fault message will appear on message display when CO2 supply to Unit has been turned off or if CO2 pressure drops below 50-psi. A minimum CO2 pressure of 75-psi must be available to Unit to extinguish ‘‘CO2 OUT’’ fault message.

‘‘SYRUP 1’’ or ‘‘SYRUP 2’’ Fault Messages.

‘‘SYRUP 1’’ or ‘‘SYRUP 2’’ fault messages will appear on message display if product tanks are not connected to Unit or product tanks are empty. Syrup systems syrup float switches must be filled with syrup to extinguish ‘‘SYRUP 1’’ or ‘‘SYRUP 2’’ fault messages.

‘‘DEFROST 1’’ or ‘‘DEFROST 2’’ Display Messages.

‘‘DEFROST 1’’ or ‘‘DEFROST 2’’ display messages will appear on message display if either freeze cylinder is in defrost mode. ‘‘DEFROST 1’’ or ‘‘DEFROST 2’’ messages will remain on during defrost cycle and will disappear when cycle has ended.

‘‘POINT OF SALE’’ Display Message.

Three ‘‘POINT OF SALE‘’ display messages are available to choose from and may be programmed into Unit as instructed to appear on message display.

Common Outlet Temperatures.

Evaporator refrigeration coils inlet 1 and inlet 2 and common outlet temperatures may be displayed on control panel message display as instructed.

FREEZE CYLINDERS MANUAL OR AUTOMATIC DEFROST SYSTEMS

The Unit is equipped with both manual and automatic hot-gas defrost systems. The automatic defrost system may be programmed into the Unit to occur up to nine different times a day with a minimum of two hours between defrost time settings or the system may be completely turned off.

MANUAL DEFROST SYSTEM

The manual hot-gas defrost system may be activated at any time by pressing ‘‘DEFROST’’ switch on front of the Unit. Refrigeration compressor will operate for a short time, then both freeze cylinders will go into defrost and defrost for approximately 60-seconds. At end of manual defrost cycle, Unit will return to normal operation. Manual defrost may be cancelled at any time by pressing ‘‘CANCEL DEFROST’’ switch.

AUTOMATIC DEFROST SYSTEM

The automatic hot-gas defrost system may be programmed into the Unit to occur up to nine different times a day with a minimum of two hours between defrost settings. At start of each automatic defrost cycle, refrigeration compressor will operate for 30 seconds to pump freon out of freeze cylinders evaporator coils. After freon has been pumped out of freeze cylinders evaporator coils, No. 1 freeze cylinder only will go into defrost for approxi- mately 7 minutes and then will return to normal operation. This ends automatic defrost cycle of No. 1 freeze cyl- inder. No. 2 freeze cylinder will defrost 30 minutes after the start of No. 1 freeze cylinder. The next automatic defrost cycle will occur according to time programmed into the Unit.

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Contents To the Installer Table of Contents Table of Contents cont’d Programming Main Menu Selections Onto Message Display VIS Read Actual Viscosity Readout of ProductWater Strainer Screen and Double Liquid Check Valve Preparing Unit for SHIPPING, STORING, or RelocatingProduct Carbonation Adjustment Daily Cleaning of Unit Sanitizing Syrup SystemsTroubleshooting Control Panel Switches and Fault ‘‘ERROR 1’’ or ‘‘ERROR 2’’ Fault Message Goes on DuringDefrost Cycle does not Cancel After Pressing ‘‘CANCEL Freeze Cylinder Automatic Defrost Cycle does notList of Figures Table of Contents cont’d General Description Unit DescriptionAccessories Service ToolsTheory of Operation Generic Flavor TabsDefrost Systems Manual Defrost SystemAutomatic Defrost System ‘‘SLEEP’’ Sleep Time ‘‘WAKE UP’’ Wake UP TimeFlow Diagram This page Left Blank Intentionally Unpacking and Inspection Identification of LOOSE-SHIPPED PartsElectrical Power Requirements Selecting LocationHZ Unit Installing Unit Installing Leveling LegsInstalling Drip Tray Supports Item 7 and Item Installing Drip Tray Drain Hose KIT ItemInstalling Primary CO2 Regulator Assembly on CO2 Cylinder Connecting CO2 Source Line to Unit CO2 Inlet LineConnecting City Plain Water Source Line to Unit Connecting Electrical Power Circuit to the UnitElectrical BOX Turning on Electrical Power to Unit Adjusting Primary CO2 RegulatorAdjusting Product Blender Tanks Secondary CO2 Adjusting Carbonator Secondary CO2 RegulatorHidden Security Switch Message Display Control Panel ASS’YFilling Freeze Cylinders with Product Checking Unit for SYRUP, CO2, or Plain Water LeaksAdjusting Beater Motor Current Either Side Placing Unit in Operating LocationSetting Clock Time of DAY Programming Main Menu Selection Onto Message DisplayProgramming ‘‘DEFROST’’ Automatic Settings Into Unit Menu SelectionsMain Menu Selections Switch Function DIP Switch FunctionsProgramming ‘‘SLEEP’’ Sleep Time Into Unit Programming ‘‘WAKE UP’’ Wake UP Time Into Unit Programming Point of Sale Message DisplayAdjusting VIS SET Product Viscosity of Dispensed Product Master and Relay Circuit Board ‘‘VOLTAGE’’ Displayed Voltage Readout 312028000 Totals Menu Commands Description Syrup Minutes SideBrix Gallons = a X Syrup MinutesDisplayed Error Conditions Programming Proper Refrigerant Type Into Unit ElectronicsDisplayed Error Conditions Control Panel ASS’Y Switches and Displayed Messages Control Panel ASS’Y SwitchesControl Panel Assembly Display Messages ‘‘SECURITY SWITCH.’’Freeze Cylinders Manual or Automatic Defrost Systems ‘‘SLEEP’’ Sleep Time Operation Faceplate Relief ValvesProduct Sample Valves Product Shutoff ValvesSyrup Flow Regulators Dispensing ValvesDispensed Product Conditions ‘‘OVERRUN’’, AS Applied to Frozen Carbonated BeveragesOperating Characteristics Operating UnitReplenishing Syrup Supply Cleaning and Sanitizing Cleaning Condenser CoilProduct Flavor Change Checking CO2 SupplyAdjustments Adjusting ‘‘VIS SET’’ Product Viscosity of Dispensed Product Cleaning CO2 GAS Check Valves Preparing Unit for SHIPPING, STORING, or Relocating Periodic InspectionTOP Panel Back PanelOpening and Closing Front Access Door Front Access PanelOpening Front Access Door Closing Front Access DoorOperating Controls Unit Internal Components SELF-CLOSING Dispensing Valve 312028000 Adjusting Plain Water Pressure Regulator Adjusting Carbonated Water Flow RateFreeze Cylinder Cutaway View Servicing Beater Motor Drive SHAFT/SEAL Assembly Beaters and Scraper Blades Installation Adjusting CO2 Regulators Adjusting Brix WATER-TO-SYRUP ‘‘RATIO’’ of Dispensed Product Product Carbonation Adjustment Daily Cleaning of UnitSanitizing Syrup Systems To disconnect soft drink tank from Unit syrup system 312028000 Yearly or After Water System Disruption Servicing Carbonator Water Pump Water Strainer ScreenLiquid Check Valve Assembly Servicing Carbonator Water Pump Double Liquid Check ValveReplenishing Syrup Supply Service and Maintenance Section Replenishing CO2 SupplySyrup Flavor Change Water Strainer Screen and Double Liquid Check Valve Serviced Replacing Freeze Cylinder Beater Drive MotorAdjusting Carbonator Tank Liquid Level Ments in Small IncrementsCarbonator Liquid Level Control Switch Adjustment Refrigeration Flow Diagram Wiring Diagram This page Left Blank Intentionally Troubleshooting Control Panel Switches and Fault Messages Control Panel Switches Poorly Illuminated Display ONE or More FaultALL Fault Messages not a Cannot be DeactivatedALL Fault Message not ‘‘CO2 OUT’’ Fault Message‘‘H2O OUT’’ Fault Message Fault Message Goes onTroubleshooting Product Blender Tanks and Carbonator Troubleshooting Dispensed Product Frozen Product Consistency VariesExcessively FREEZE-UPIllustrated Parts Breakdown Unit Part NumbersOvercounter FCB POST-MIX Dispenser FCB POST-MIX Dispenser FCB POST-MIX Dispenser cont’d Name Secondary CO2 Regulator Components Secondary CO2 Regulator ASS’Y CO2 Regulator Assembly Blender and Tubing Components Tubing Assembly Carb Water Tubing Assembly Water Solenoid to Blender Solenoid Valve Assembly Blender Components Control BOX and Display Panel Components Faceplate Assembly Dispensing Valve Assembly Carbonator Components Carbonator Tank and Linkage Assembly Pump and Motor ASS’Y Beater Motor Drive SHAFT/SEAL ASS’Y Warranty This page Left Blank Intentionally One Cornelius Place Anoka, Minnesota 612 800