Cornelius R-404A REFRIGERANT service manual 312028000

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B.Carefully install valve with caged O-ring in dispensing valve body.

C.Install spring fitting, knob and lever parts, torsion spring, and spring housing assembly by reversing removal procedure. Do not tighten hold-down plates securing spring housing at this time.

10.Thoroughly clean RELIEF VALVE (item 9), then screw relief valve into FACEPLATE (item 8).

11.Proceed to Servicing Beater Motor Drive Shaft/Seal Assemblies.

Servicing Freeze Cylinders Drive Shaft/Seal Assemblies.

(see Figure 9)

IMPORTANT: The freeze cylinders drive shaft/seal assemblies must be removed and inspected every four months. Their shafts and bearings must be inspected and replaced if necessary. All O-Ring seals must be replaced at this time.

NOTE: Use Dow-Corning DC-111 (P/N 321471000) light grade silicone lubricant.

1.Pull BEATER (item 13) and SCRAPER BLADES (item 2) from freeze cylinder.

2.Using WRENCH (item 11, LOOSE-SHIPPED PARTS), reach into the freeze cylinder and turn the drive shaft/seal assembly to the right (clockwise) to unlock its four locking tabs from the notches in the freeze cylinder retainer. Pull the assembly out of the freeze cylinder retainer using the beater as a puller.

3.Remove the coupling end fitting from the shaft by loosening the set screw in the coupling, then slide cou- pling off the shaft.

4.Remove the lock-ring bearing retainer from the end of the plastic housing.

5.Using a block of wood, tap the drive shaft and both bearings out of the plastic housing.

6.Loosen bearings and remove shaft. Remove two old inner drive shaft O-Ring seals and two outer O-Ring seals from the plastic housing. Discard the old O-Ring seals.

NOTE: If old lubricant cannot be removed from the plastic housing by washing, use a nylon ‘‘pot and pan’’ scrubber (3M Company ‘‘Scotchbrite’’, or equivalent) to remove the residue. Do not scrape plastic housing. Replace any housing that has rough edges in O-Ring sealing areas.

7.Remove old lubricant from the plastic housing with paper towel. DO NOT SCRAPE THE PLASTIC HOUS- ING. Wash the housing and the back of the freeze cylinder with warm water.

8.Lubricate two new drive shaft O-Ring seals with a generous amount of special light-grade silicone grease, then install O-Rings inside the plastic housing.

9.Inspect the drive shaft and both bearings. Replace the drive shaft if worn and bearing(s) if found to be rough.

10.Reassemble the drive shaft/seal assembly. Using TOOL, DRIVE/COUPLER ADJUSTMENT GAUGE (item 12), insert “DRIVE” end of adjustment gauge between drive-pin and housing (see Figure 9) to set the shaft end at 1.542-inches out of the plastic housing. Make sure Allen-Head set screw in each bearing is securely tightened and properly seated on the shaft flat surface.

11.Install coupling end fitting on end of the drive shaft. Insert “COUPLER” end of the adjustment gauge be- tween coupling end fitting and the plastic housing. The adjustment gauge in place places the coupling end fitting 0.750-inch away from the plastic housing. Make sure Allen-Head set screw in the coupling end fitting is securely tightened and properly seated on the shaft flat surface.

12.Lubricate the two outer O-Ring seals on the outside of the plastic housing with a generous amount of spe- cial light-grade silicone grease.

13.Reinstall the drive shaft/seal assembly in the freeze cylinder.

14.Push in and turn the drive shaft/seal assembly to the left (counterclockwise) to lock its four locking tabs into four notches in the freeze cylinder retainer.

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Contents To the Installer Table of Contents Table of Contents cont’d VIS Read Actual Viscosity Readout of Product Programming Main Menu Selections Onto Message DisplayWater Strainer Screen and Double Liquid Check Valve Preparing Unit for SHIPPING, STORING, or RelocatingDaily Cleaning of Unit Sanitizing Syrup Systems Product Carbonation AdjustmentTroubleshooting Control Panel Switches and Fault ‘‘ERROR 1’’ or ‘‘ERROR 2’’ Fault Message Goes on DuringFreeze Cylinder Automatic Defrost Cycle does not Defrost Cycle does not Cancel After Pressing ‘‘CANCELList of Figures Table of Contents cont’d Unit Description General DescriptionService Tools AccessoriesTheory of Operation Generic Flavor TabsManual Defrost System Defrost SystemsAutomatic Defrost System ‘‘WAKE UP’’ Wake UP Time ‘‘SLEEP’’ Sleep TimeFlow Diagram This page Left Blank Intentionally Identification of LOOSE-SHIPPED Parts Unpacking and InspectionSelecting Location Electrical Power RequirementsHZ Unit Installing Leveling Legs Installing UnitInstalling Drip Tray Supports Item 7 and Item Installing Drip Tray Drain Hose KIT ItemConnecting CO2 Source Line to Unit CO2 Inlet Line Installing Primary CO2 Regulator Assembly on CO2 CylinderConnecting Electrical Power Circuit to the Unit Connecting City Plain Water Source Line to UnitElectrical BOX Adjusting Primary CO2 Regulator Turning on Electrical Power to UnitAdjusting Product Blender Tanks Secondary CO2 Adjusting Carbonator Secondary CO2 RegulatorControl 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 DAYMenu Selections Programming ‘‘DEFROST’’ Automatic Settings Into UnitMain Menu Selections DIP Switch Functions Switch FunctionProgramming ‘‘SLEEP’’ Sleep Time Into Unit 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 Syrup Minutes Side Totals Menu Commands DescriptionBrix Gallons = a X Syrup MinutesProgramming 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 Faceplate Relief Valves ‘‘SLEEP’’ Sleep Time OperationProduct Sample Valves Product Shutoff ValvesDispensing Valves Syrup Flow RegulatorsDispensed Product Conditions ‘‘OVERRUN’’, AS Applied to Frozen Carbonated BeveragesOperating Unit Operating CharacteristicsReplenishing Syrup Supply Cleaning Condenser Coil Cleaning and SanitizingProduct Flavor Change Checking CO2 SupplyAdjustments Adjusting ‘‘VIS SET’’ Product Viscosity of Dispensed Product Cleaning CO2 GAS Check Valves Periodic Inspection Preparing Unit for SHIPPING, STORING, or RelocatingTOP Panel Back PanelFront Access Panel Opening and Closing Front Access DoorOpening Front Access Door Closing 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 Daily Cleaning of Unit Product Carbonation AdjustmentSanitizing Syrup Systems 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 Replenishing CO2 Supply Service and Maintenance SectionSyrup Flavor Change 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 Poorly Illuminated Display ONE or More Fault Control Panel SwitchesALL Fault Messages not a Cannot be Deactivated‘‘CO2 OUT’’ Fault Message ALL Fault Message not‘‘H2O OUT’’ Fault Message Fault Message Goes onTroubleshooting Product Blender Tanks and Carbonator Troubleshooting Dispensed Product Consistency Varies Frozen ProductExcessively FREEZE-UPUnit 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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