Cornelius R-404A REFRIGERANT service manual Troubleshooting Product Blender Tanks and Carbonator

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Trouble	Probable Cause	Remedy
MANUAL DEFROST CYCLE	E. Master circuit board not	E. Replace master circuit board.
DOES NOT OPERATE WHEN	operating properly.
‘‘DEFROST’’ SWITCH IS
PRESSED. (cont’d)

DEFROST CYCLE DOES NOT A.	Flat cable not properly
CANCEL AFTER PRESSING	connected to control switch
‘‘CANCEL DEFROST ’’	module or master circuit
SWITCH.	board.

A.Properly connect flat cable to control switch module or master circuit board.

B.Flat cable connected between control switch module and master circuit board pinched and shorted out or broken wire in cable.

B.Check cable for pinched or broken wire condition and repair or replace as necessary.

C.Inoperable ‘‘CANCEL DEFROST’’ switch on control panel switch module.

C.Replace control panel switch module.

D. Master circuit board not		D.	Replace master circuit board.
	operating properly.

TROUBLESHOOTING PRODUCT BLENDER TANKS AND CARBONATOR

CARBONATOR WATER PUMP A.	No electrical power to Unit.	A. Connect electrical power to Unit.
MOTOR WILL NOT OPERATE.			Check power source.
B.	‘‘AUTO BLEND 1’’ or ‘‘AUTO	B.	Press ‘‘AUTO BLEND 1’’ or
	BLEND 2’’ switches have not		‘‘AUTO BLEND 2’’ switch.
	been pressed.

C.‘‘H2O OUT’’ fault message is on.

C.Restore water supply to Unit.

D.‘‘CO2 OUT’’ fault message is on.

E.Loose or broken electrical wires.

D.Replenish CO2 supply as instructed.

E.Tighten connections or replace wires.

F. Overheated water pump motor F. cut off by overload protector.

Check for proper line voltage. Check restricted pump discharge.

G.Binding water pump (new or replacement pump only).

G.Remove water pump from motor. Rotate pump coupling shaft 180 degrees, then reinstall pump.

H.	Inoperative water pump and/or	H.	Replace pump and/or motor.
	motor.
I.	Inoperative carbonated water	I.	Replace level control switches.
	tank level control switches.

J.Binding, damaged, or dirty carbonated water tank balance mechanism.

J.Clean, repair, or replace balance mechanism.

K. Inoperative water pump and/or K.	Replace water pump and/or
motor.	motor.

312028000

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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