Cornelius R-404A REFRIGERANT service manual Yearly or After Water System Disruption

Page 59

38.After carbonator water pump cycles off, intermittently pull and release No. 1 freeze cylinder faceplate relief valve. This bleeds CO2 from freeze cylinder and allows product to enter and fill cylinder.

39.Open No. 2 product blender tank product shutoff valve.

40.Press both ‘‘AUTO 1’’ and ‘‘AUTO 2‘’ switches to start both freeze cylinders beaters and refrigeration sys- tem. Product will be ready for dispensing in approximately 10 minutes.

41.Install right-hand side panel and lower front access panel by reversing removal procedure.

42.Service water pump water strainer screen before servicing water pump double liquid check valve.

43.Disconnect carbonator tank water line from double liquid check valve assembly outlet.

YEARLY OR AFTER WATER SYSTEM DISRUPTION

WARNING: The carbonator water pump water strainer screen and the double liquid check valve must be Inspected and serviced after any disruptions (plumbing work, earthquake, etc.) to the water supply system, and at least once a year under normal circumstances.

Water pump with no strainer screen or a defective screen would allow foreign particles to foul the double liquid check valve. CO2 gas could then back flow into the water system and create a health hazard in the water system.

SERVICING CARBONATOR WATER PUMP WATER STRAINER SCREEN

(see Figure 2 and 12)

1.Press ‘‘OFF 1’’ and ‘‘OFF 2’’ switches to stop freeze cylinders beaters and refrigeration systems.

2.Disconnect electrical power from Unit.

3.Close CO2 cylinder and water inlet supply line shutoff valve.

4.Using a flat blade screwdriver, turn lock counterclockwise to unlock the front access door (see Figure 5), then open the door.

5.Remove back panel as instructed for access to the water pump water strainer screen.

6.Pull up on carbonator tank relief valve plastic cover to release CO2 pressure from tank.

7.Loosen screen retainer in water pump port, then remove screen retainer and strainer screen from the port.

8.Pull strainer screen from the screen retainer. Clean any sediment from the screen retainer and the water pump port.

9.Inspect strainer screen for holes, restrictions, corrosion, and other damage. Discard damaged strainer screen.

10. Check O-ring on screen retainer. Replace worn or damaged O-ring (P/N 315349000).

Note: A strainer screen should always be used, otherwise particles could foul the double liquid check valve.

11.Install good or new strainer screen (P/N 315348000) in screen retainer, then screw retainer into water pump port and tighten securely.

12.Proceed to SERVICING CARBONATOR WATER PUMP DOUBLE LIQUID CHECK VALVE.

312028000

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Contents To the Installer Table of Contents Table of Contents cont’d Preparing Unit for SHIPPING, STORING, or Relocating Programming Main Menu Selections Onto Message DisplayVIS Read Actual Viscosity Readout of Product Water Strainer Screen and Double Liquid Check Valve‘‘ERROR 1’’ or ‘‘ERROR 2’’ Fault Message Goes on During Product Carbonation AdjustmentDaily Cleaning of Unit Sanitizing Syrup Systems Troubleshooting Control Panel Switches and FaultList of Figures Defrost Cycle does not Cancel After Pressing ‘‘CANCELFreeze Cylinder Automatic Defrost Cycle does not Table of Contents cont’d Unit Description General DescriptionGeneric Flavor Tabs AccessoriesService Tools Theory of OperationAutomatic Defrost System Defrost SystemsManual Defrost System ‘‘WAKE UP’’ Wake UP Time ‘‘SLEEP’’ Sleep TimeFlow Diagram This page Left Blank Intentionally Identification of LOOSE-SHIPPED Parts Unpacking and InspectionHZ Unit Electrical Power RequirementsSelecting Location Installing Drip Tray Drain Hose KIT Item Installing UnitInstalling Leveling Legs Installing Drip Tray Supports Item 7 and ItemConnecting CO2 Source Line to Unit CO2 Inlet Line Installing Primary CO2 Regulator Assembly on CO2 CylinderElectrical BOX Connecting City Plain Water Source Line to UnitConnecting Electrical Power Circuit to the Unit Adjusting Carbonator Secondary CO2 Regulator Turning on Electrical Power to UnitAdjusting Primary CO2 Regulator Adjusting Product Blender Tanks Secondary CO2Control Panel ASS’Y Hidden Security Switch Message DisplayChecking Unit for SYRUP, CO2, or Plain Water Leaks Filling Freeze Cylinders with ProductPlacing Unit in Operating Location Adjusting Beater Motor Current Either SideProgramming Main Menu Selection Onto Message Display Setting Clock Time of DAYMain Menu Selections Programming ‘‘DEFROST’’ Automatic Settings Into UnitMenu Selections Programming ‘‘SLEEP’’ Sleep Time Into Unit Switch FunctionDIP Switch Functions Programming Point of Sale Message Display Programming ‘‘WAKE UP’’ Wake UP Time Into UnitAdjusting VIS SET Product Viscosity of Dispensed Product Master and Relay Circuit Board ‘‘VOLTAGE’’ Displayed Voltage Readout 312028000 Gallons = a X Syrup Minutes Totals Menu Commands DescriptionSyrup Minutes Side BrixProgramming Proper Refrigerant Type Into Unit Electronics Displayed Error ConditionsDisplayed Error Conditions Control Panel ASS’Y Switches Control Panel ASS’Y Switches and Displayed Messages‘‘SECURITY SWITCH.’’ Control Panel Assembly Display MessagesFreeze Cylinders Manual or Automatic Defrost Systems Product Shutoff Valves ‘‘SLEEP’’ Sleep Time OperationFaceplate Relief Valves Product Sample Valves‘‘OVERRUN’’, AS Applied to Frozen Carbonated Beverages Syrup Flow RegulatorsDispensing Valves Dispensed Product ConditionsReplenishing Syrup Supply Operating CharacteristicsOperating Unit Checking CO2 Supply Cleaning and SanitizingCleaning Condenser Coil Product Flavor ChangeAdjustments Adjusting ‘‘VIS SET’’ Product Viscosity of Dispensed Product Cleaning CO2 GAS Check Valves Back Panel Preparing Unit for SHIPPING, STORING, or RelocatingPeriodic Inspection TOP PanelClosing Front Access Door Opening and Closing Front Access DoorFront Access Panel Opening Front Access DoorOperating Controls Unit Internal Components SELF-CLOSING Dispensing Valve 312028000 Adjusting Carbonated Water Flow Rate Adjusting Plain Water Pressure RegulatorFreeze 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 Sanitizing Syrup Systems Product Carbonation AdjustmentDaily Cleaning of Unit To disconnect soft drink tank from Unit syrup system 312028000 Servicing Carbonator Water Pump Water Strainer Screen Yearly or After Water System DisruptionServicing Carbonator Water Pump Double Liquid Check Valve Liquid Check Valve AssemblyReplenishing Syrup Supply Syrup Flavor Change Service and Maintenance SectionReplenishing CO2 Supply Water Strainer Screen and Double Liquid Check Valve Replacing Freeze Cylinder Beater Drive Motor ServicedMents in Small Increments Adjusting Carbonator Tank Liquid LevelCarbonator Liquid Level Control Switch Adjustment Refrigeration Flow Diagram Wiring Diagram This page Left Blank Intentionally Troubleshooting Control Panel Switches and Fault Messages Cannot be Deactivated Control Panel SwitchesPoorly Illuminated Display ONE or More Fault ALL Fault Messages not aFault Message Goes on ALL Fault Message not‘‘CO2 OUT’’ Fault Message ‘‘H2O OUT’’ Fault MessageTroubleshooting Product Blender Tanks and Carbonator Troubleshooting Dispensed Product FREEZE-UP Frozen ProductConsistency Varies ExcessivelyUnit Part Numbers Illustrated Parts BreakdownOvercounter 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
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