Cornelius 326142000 service manual Theory of Operation, Defrost Systems

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Table 1. Design Data (cont’d)

Table 1. Design Data (cont’d)

 

 

Overall Dimensions:

Overall Dimensions:

Height

60-1/2 inches

Width

19-1/4 inches

Depth Without Drip Tray

32-1/2 inches

Depth With Drip Tray

38 inches

 

 

Shipping Weight (approx.)

466 pounds

 

 

Compressor Horsepower

2 H.P.

 

 

Refrigeration System:

Refrigeration System:

Refrigerant Type

R-502

Refrigerant Charge

See Unit Nameplate

 

 

Ambient Operating Temperature

40° F to 100° F

 

 

Electrical Requirements:

Electrical Requirements:

60 Hz Unit:

 

Operating Voltage

219/242 VAC60 Hz Single Phase

Current Draw

21.2 Amps

 

 

50 Hz Unit:

 

Operating Voltage

219/242 VAC 50 Hz Single

 

Phase

 

 

Current Draw

22 Amps

THEORY OF OPERATION

(see Figure 2)

IMPORTANT: Before connecting electrical power to Unit, refer to nameplate and note if Unit is to be operated with 50 or 60 Hz power source and also note beaters drive motors manufacturer’s name. No. 6, No. 7, and No. 8 switches on DIP switch assembly on master circuit board must be set according to motors manufacturer and for 50 or 60 Hz operation.

A CO2 cylinder delivers carbon dioxide (CO2) gas to an adjustable primary CO2 regulator assembly attached to the cylinder. Primary CO2 regulator assembly in turn delivers CO2 gas to adjustable secondary CO2 regulators inside the Unit and also to two soft drink tanks. CO2 is delivered from adjustable secondary CO2 regulators to carbonator tank and also two product-blender tanks inside the Unit. CO2 gas pressure pushes syrup out of soft drink tanks, through syrup sold-out float switches, through electrically-operated syrup solenoid valves, through adjustable syrup flow regulators, and on to product blender tanks. At the same time, plain water passes through water pressure regulator and is pumped into carbonator tank by water pump and is carbonated by CO2 gas pressure also entering tank. Carbonated water is pushed by CO2 gas pressure from carbonator tank, through electrically operated carbonated water solenoid valves through adjustable carbonated water flow regulators, and on to product blender tanks. Carbonated water and syrup enter tanks properly proportioned (blended) for desired BRIX of dispensed product by adjustment of syrup flow regulators. From product blender tanks, product is pushed by CO2 gas into freeze cylinders. The beater in each freeze cylinder is driven by an electric motor. Scraper blades, attached to beaters, scrapes product from cylinder walls as product enters freeze cylinders and is frozen. Transparent faceplate, attached to front of each freeze cylinder, includes a self-closing dispensing valve and a spring-loaded relief valve that protects freeze cylinder from accidental over pressure. The relief valve is also used to bleed CO2 gas pressure from freeze cylinder to atmosphere when filling cylinder with product. Electronic sensing on each freeze cylinder motor provides a means of adjusting viscosity (consistency) of dispensed product to suit customer preference.

DEFROST SYSTEMS

The Unit is equipped with both manual and automatic hot-gas defrost systems. The automatic defrost system may be programmed into 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.

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Contents This Document Contains Important Information FCB SOLID-STATE Post MIX DispenserTable of Contents Table of Contents cont’d Programming Main Menu Selection Onto Message Display Dispensing Valves Caged O-RINGS and Beaters Drive‘‘VIS READ’’ Actual Viscosity Readout of Product Troubleshooting Control Panel Switches and FaultServicing Carbonator Water Pump Double Liquid Check Replacing Freeze Cylinder Beater Drive Shaft BearingGeneric Flavor Tabs Service Tools ‘‘ERROR 1’’ or ‘‘ERROR2’’ Fault Message Goes on DuringFreeze Cylinder Automatic Defrost Cycle does not List of FiguresList of Figures CONT’D List of TablesTotals Displayed Cycles and Hours Totals Menu Unit Description General DescriptionDefrost Systems Theory of Operation‘‘WAKE UP’’ Wake UP Time ‘‘SLEEP’’ Sleep TimeManual Defrost System Automatic Defrost SystemFlow Diagram Identification of LOOSE-SHIPPED Parts Unpacking and InspectionInstalling Beaters Item 11 and Scraper Blades Item Electrical Power RequirementsDomestic Unit Freeze Cylinder Cutaway View Export Unit Selecting LocationInstalling Drip Tray SUPPORTS, Drip TRAY, and CUP Rest Installing UnitInstalling Drip Tray Drain KIT Item Installing Primary CO2 Regulator Assembly on CO2 CylinderConnecting Plain Water Inlet Supply Line to Unit Connecting Electrical Power Circuit to Unit Preparation for Operation50 or 60 HZ Operation and Beater Motor Select Connecting Soft Drink Tanks to Unit Syrup Systems Turning on Electrical Power to UnitTurning on CO2 Supply to Unit Turning on Plain Water Supply to UnitAdjusting Brix WATER-TO-SYRUP ‘‘RATIO’’ of Dispensed Product Setting ‘‘CLOCK’’ Time of DAY Adjusting Beater Motor Current Either SideProgramming ‘‘DEFROST’’ Automatic Settings Into Unit Filling Freeze Cylinders with ProductDisplayed Error Conditions Displayed Error Conditions‘‘VOLTAGE’’ Displayed Voltage Readout This page Left Blank Intentionally Control Panel Switches Control Panel Switches and Displayed MessagesControl Panel Display Messages ‘‘SECURITY SWITCH.’’Freeze Cylinders Manual or Automatic Defrost Systems Product Sample Valves Faceplate Relief ValvesProduct Shutoff Valves Primary CO2 RegulatorDrawing Operating CharacteristicsReplenishing Syrup Supply Operating UnitProduct Flavor Change Checking CO2 SupplyCleaning and Sanitizing Cleaning Condenser Coil LubricationAdjustments Programming Main Menu Selections Onto Message Display Cleaning CO2 GAS Check Valves Displayed Error ConditionsThis page Left Blank Intentionally Periodic Inspection Preparing Unit for SHIPPING, STORING, or RelocatingLower Front Access Panel Condenser Coil Access PanelCarbonator Water Pump Motor 326142000 Operating Controls Unit Internal Components SELF-CLOSING Dispensing Valve Cleaning Condenser CoilAdjusting Carbonated Water Flow Rate Adjusting Plain Water Pressure RegulatorAdjusting CO2 Regulators Product Carbonation Adjustment ADJUSTMENTS, and Programming Main Menu Selections Into Unit Hidden Security Switch Message Display Setting Clock Time of DAYMenu Commands Programming Main Menu Selection Onto Message DisplayProgramming ‘‘DEFROST’’ Automatic Settings Into Unit Master and Relay Circuit Boards DIP Switch Functions Motor Selected Switch FunctionBeater Motor Select DIP Switch Message Point of Sale Display MessagesAdjusting VIS SET Product Viscosity of Dispensed Product ‘‘VOLTAGE’’ Displayed Voltage Readout Syrup Minutes Side Totals Menu Commands DescriptionBrix Displayed Error ConditionsSanitizing Syrup Systems Daily Cleaning of Unit326142000 326142000 Servicing Carbonator Water Pump Water Strainer Screen Yearly or After Water System DisruptionServicing Carbonator Water Pump Double Liquid Check Valve Replenishing CO2 Supply Syrup Flavor Change Water Strainer Screen and Double Liquid Check Valve Cleaning CO2 GAS Check Valves Replacing Freeze Cylinder Beater Drive Shaft BearingShutting Unit Down Beater Drive Motor and Shaft Seal ASS’Y Replacement Installing Beater Drive Shaft Bearing ASS’YReplacing Beater Drive Shaft Seal ASS’Y Restoring Unit OperationDrive motor Replacing Freeze Cylinder Beater MotorAdjusting Carbonator Tank Liquid Level Carbonator Liquid Level Control Switch Adjustment Refrigeration Flow Diagram Wiring Dirgram Troubleshooting Control Panel Switches and Fault Messages Poorly Illuminated Display ONE or More Fault Control Panel SwitchesCannot be Deactivated Partial Message or Dull‘‘CO2 OUT’’ Fault Message ALL Fault Messages not‘‘H2O OUT’’ Fault Message Fault Message Goes onTroubleshooting Product Blender Tanks and Carbonators Troubleshooting Dispensed Product Service Tools Accessories and ToolsInstructed Generic Flavor TabsFCB SOLID-STATE POST-MIX Dispenser FCB POST-MIX Dispenser FCB POST-MIX Dispenser CONT’D FCB Flow Diagram FCB POST-MIX Dispenser By 1/2-In. Long Faceplate Assembly Dispensing Valve Assembly CO2 Regulator Assembly Carbonator Assembly Name Warranty This page Left Blank Intentionally One Cornelius Place Anoka, Minnesota 612 800

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