Bunn CEZF, CDBC service manual Service, Component Access, Contents

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SERVICE

This section provides procedures for testing and replacing various major components used in this brewer should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem.

WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by qualified service personnel. The brewer should be unplugged when servicing, except when electrical tests are re- quired and the test procedure specifically states to plug-in the brewer.

COMPONENT ACCESS

WARNING - Disconnect the brewer from the power source before the removal of any panel or the replace- ment of any component.

All components are accessible by the removal of the top cover or warmer housing and front access panel.

The top cover is attached with one #4-40 screw.

The front access panel is attached with four #6-32 screws.

Contents

 

Control Board - CDBC-APS/TC/TS/TSR

22

Control Board - CEZ-APS/TS/TSR

23

Switch Panel - CDBC-APS/TC/TS/TSR

24

ON/OFF Switch - CEZ-APS/TS/TSR

25

BREW Switch (Start) - CEZ-APS/TS/TSR

26

Dispense Valve

27

Limit Thermostat

28

Tank Heater

29

Refill Valve

31

Wiring Diagrams

32

 

RCE

 

SOUL OR

 

! WARNINGEOW PANEENT!

 

FROMOPF ACNOYMPON

CONNREECMTOTVOAFLANY

DIS ORE

MEN

BEFLACE

 

REP

 

 

P1913

FIG. 1 COMPONENT ACCESS

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29253 111103

 

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Contents Phone 217 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction ContentsUser Notices Electrical Requirements Plumbing RequirementsElectrical Hook-Up Brew Switch ON/OFF SwitchReady Indicator Operating ControlsCleaning Initial SET-UPCoffee Brewing Adjusting Brew Volumes CEZ-APS/TS/TSR Adjustments & Optional SettingsSetting Brew Temperature CDBC-APS/TC/TS/TSR Adjustments & Optional SettingsDisplaying Brew Temperature Setting Brew LockoutCDBC-APS/TC/TS/TSR Adjustments & Optional Settings Water Sensing Threshold Adjustment ProcedureBefore troubleshooting this brewer, check for the following TroubleshootingRefill Circuit Problem TroubleshootingProbable Cause Remedy2a. Water Level Probe Sensing System CDBC-APS/TS/TSR Troubleshooting Refill CircuitHeating Circuit Problem Probable Cause Remedy Water does not heat to proper temperatureWater not touching temperature probe Problem Probable Cause Remedy Troubleshooting Heating CircuitControl Board Cdbc & CEZ ContReplace the control board.See Pages 21Brewing Circuit Problem Probable Cause Troubleshooting Brewing Circuit Set-upinstructions Water temperatureDripping from sprayhead Lime build up RequiredProblem Probable Cause Dry coffee grounds remain Sprayhead FunnelFunnel loading Cause Things to Check DiagnosticsService Component AccessContents Control Board ServiceControl Board Service Control Board Model CEZ-APS/TS/TSRSwitch Panel Service Switch Panel Model CDBC-APS/TC/TS/TSRON/OFF Switch Wiring Brew Switch Wiring Service Brew Switch Start Model CEZ-APS/TS/TSRDispense Valve Dispense ValveLimit Thermostat Limit ThermostatTank Heater Tank HeaterTank Heater Wiring Service Tank HeaterCheck for continuity across the refill valve coil terminals Refill ValveLevelsingle Phase 120V AC 2 Wire 120/208V AC 3 Wire 120/240V AC 3 WireSchematic Wiring Diagram CEZ-APS/TS/TSR Cdbc 15, 20 & 35 APS/TC/TS 120V AC 2 Wire

CEZF, CDBC specifications

The Bunn CEZF and CDBC are two popular commercial coffee brewers offered by Bunn, a leader in the coffee equipment industry. Both models are designed to meet the demands of high-traffic settings such as cafes, restaurants, and other foodservice establishments. They combine advanced technology with user-friendly features to ensure consistent, high-quality coffee with minimal effort.

The Bunn CEZF model is known for its easy-to-use design and efficiency. One of its standout features is the "Digital Brewer" control, which allows operators to adjust brewing parameters such as brew time and water temperature. This level of customization enables baristas to consistently create the perfect cup of coffee tailored to their specific blends. Furthermore, the CEZF has a unique "intelligent" warming plate that maintains the optimal serving temperature without over-extraction, ensuring that each cup of coffee remains flavorful.

On the other hand, the Bunn CDBC incorporates a dual brewing capacity that allows for larger batches of coffee to be made simultaneously. This feature is particularly beneficial in high-demand environments where quick service is essential. The CDBC also utilizes a patented brew control technology, enabling users to select their brew strength with just a few button presses. This flexibility is complemented by its high-performance heating element, which heats water rapidly, ensuring that coffee is brewed at the ideal temperature for optimal extraction.

Both models are equipped with a large water reservoir, ensuring a continuous supply of hot water for brewing. They also feature high-quality stainless steel constructions that enhance durability and make cleaning easier. The intuitive interface on both models simplifies operation, with clear instructions that allow even novice users to brew exceptional coffee right away.

In terms of safety, both the CEZF and CDBC are designed with auto shut-off features and integrated safety protocols, minimizing the risk of overheating and ensuring a secure brewing environment.

Overall, the Bunn CEZF and CDBC are excellent choices for any commercial kitchen or café looking to serve high-quality coffee efficiently. Their advanced features, durability, and ease of use make them top contenders in the commercial brewing category.