Bunn TWIN service manual Service PC Control Board Model Cdbc

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SERVICE (cont.)

PC CONTROL BOARD - Model CDBC

 

 

 

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P1873

FIG. 2 CONTROL BOARDS - CDBC

Location:

The Control Boards are located inside the top cover behind the front end caps.

Test Procedures:

The test procedures for the control boards will vary depending upon the problems experienced by the brewer. Refer to the Troubleshooting guide beginning on page 10. The troubleshooting guide is divided into three sections, Refill Circuit, Heating Circuit, and Brew- ing Circuit.

Removal and Replacement:

1.Disconnect the black wire and blue wire from the relay on the control board.

2.Disconnect the 10-pin connector and the 4-pin connector from the main wiring harness.

3.Disconnect the 11-pin connector from the control panel.

4.Remove the four #6 screws and four nylon wash- ers and the two #4-40 screws securing the control board to the end cap assembly.

5.Install a new control board and secure with the four #6 screws and nylon washers and the two #4- 40 screws to the end cap assembly.

NOTE: The four nylon washers must be installed under the heads of the four #6 screws to prevent a possible shorting of the control board circuits.

6.Connect the 11-pin connector from the control panel.

7.Connect the 10-pin connector and the 4-pin con- nector from the main wiring harness.

8.Connect the blue wire and black wire to the relay on the control board.

9.Refer to CDBC Adjustments and Optional Settings to program the new control board.

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Contents CEZ Cdbc Twin Introduction ContentsUser Notices Electrical Hook-Up Electrical RequirementsPlumbing Requirements Ready Indicator ON/OFF SwitchBrew Switch Additional Warmer SwitchesCoffee Brewing CleaningInitial SET-UP CEZ Adjustments & Optional Settings Setting Brew Lockout Cdbc Adjustments & Optional SettingsSetting Brew Temperature Displaying Brew TemperatureAdjusting Brew Volumes Pulse Brew Setup Procedure Cdbc Twin & Cdbcf Twin Before troubleshooting this brewer, check for the following TroubleshootingRemedy TroubleshootingRefill Circuit Problem Probable CauseProblem Probable Cause Remedy Heating Circuit Problem Probable Cause Remedy Control board 4b. Temperature Probe CEZ Remove the probe from3 of the J5 connector. At Ings are takenBilize. If temperature in tank is 4 of the J3 connector. At2b. Temperature Probe CEZ Remove the probe from Set the temperature to 200FBrew cycle will not start Brewing Circuit ProblemTroubleshooting Brewing Circuit Probable Cause Remedy Holes are clear and unob Move the two wires. Check forSupply and check wiring SwitchCause Things to Check DiagnosticsContents ServiceComponent Access Disconnect the 11-pin connector from the control panel Service PC Control Board Model CdbcControl Boards CEZ Service PC Control Board Model CEZSwitch Panels Cdbc Service Switch Panel Model CdbcService ON/OFF Switches Model CEZ Minals when the switch is released Service Brew Switch Start Model CEZBottom switch terminal Dispense Valve ServiceLimit Thermostats Limit ThermostatTank Heater Tank HeatersTank Heater Wiring Service Tank HeatersCheck for continuity across the refill valve coil terminals Refill ValveWarmer Elements Warmer ElementsSchematic Wiring Diagram CEZ Twin 0/6 Left Schematic Diagramwiring Twincdbc Schematic Wiring Diagram Cdbc Twin 2/2 Right
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TWIN specifications

The Bunn TWIN,ITB is a remarkable coffee brewing system designed for commercial use, aimed at establishments that require a high volume of coffee while maintaining superior quality. This innovative brewer stands out through its dual brewing capability, allowing users to brew two different types of coffee simultaneously. This feature is particularly beneficial for cafes, restaurants, and other food service locations where diverse customer preferences must be met efficiently.

One of the main features of the Bunn TWIN,ITB is its advanced brewing technology. The system utilizes Bunn's patented brewing process, ensuring optimal coffee extraction and flavor profile every time. It employs a digitally controlled brew timer and state-of-the-art heating elements, providing precise temperature control essential for achieving the ideal brew. This technology allows for consistent results, ensuring that each cup meets the high standards expected in a commercial setting.

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