Bunn CDBC, CEZF service manual Electrical Requirements, Plumbing Requirements, Electrical Hook-Up

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ELECTRICAL REQUIREMENTS

CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up.

Model 15 has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz.

WHITE

NEUTRAL

120V.A.C.

L2 RED

WHITE

120V.A.C.

208 or 240V.A.C.

L1 BLACK

NEUTRAL

L1 BLACK

120V.A.C.

Model 20 requires 2-wire, grounded service rated

120 volts ac, 20 amp, single phase, 60 Hz. Proceed as follows:

Model 35 requires 3-wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, 60 Hz. Proceed as follows:

Electrical Hook-Up

CAUTION Ð Improper electrical installation will damage electronic components.

1.An electrician must provide electrical service as specified.

2.Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3.Remove the front panel beneath the sprayhead.

4.Feed the cord through the strain relief and connect it to the terminal block.

5.Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace the front panel.

6.If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing has been hooked up, the brewer is ready for Initial Set-Up.

PLUMBING REQUIREMENTS

These brewers must be connected to a cold water system with operating pressure between 5 and 90 psi (34.5 and 620 kPa) for CDBC models and 20 and 90 psi (138 and 620 kPa) for CEZ models from a 1Ú2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is 3Ú8" flare. Bunn-O-Matic does not recommend the use of a reverse-osmosis or deionized water supply to this equipment.

NOTE - Bunn-O-Matic recommends 1Ú4" copper tubing for installations of less than 25 feet and 3Ú8" for more than 25 feet from the 1Ú2" water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

This equipment must be installed to comply with the Basic Plumbing Code of the

Building Officials and Code Administrators International, Inc. (BOCA)

and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).

Plumbing Hook-Up

1.Flush the water line.

2.Securely attach it to the flare fitting at the rear of the brewer.

3.Turn on the water supply.

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 FAX 217Contents IntroductionUser Notices Plumbing Requirements Electrical RequirementsElectrical Hook-Up ON/OFF Switch Brew SwitchReady Indicator Operating ControlsInitial SET-UP CleaningCoffee Brewing CEZ-APS/TS/TSR Adjustments & Optional Settings Adjusting Brew VolumesCDBC-APS/TC/TS/TSR Adjustments & Optional Settings Setting Brew TemperatureDisplaying Brew Temperature Setting Brew LockoutWater Sensing Threshold Adjustment Procedure CDBC-APS/TC/TS/TSR Adjustments & Optional SettingsTroubleshooting Before troubleshooting this brewer, check for the followingTroubleshooting Refill Circuit ProblemProbable Cause RemedyTroubleshooting Refill Circuit 2a. Water Level Probe Sensing System CDBC-APS/TS/TSRWater does not heat to proper temperature Heating Circuit Problem Probable Cause RemedyWater not touching temperature probe Troubleshooting Heating Circuit Problem Probable Cause RemedyCont Control Board Cdbc & CEZReplace the control board.See Pages 21Brewing Circuit Problem Probable Cause Troubleshooting Brewing Circuit Water temperature Set-upinstructionsDripping from sprayhead Lime build up RequiredDry coffee grounds remain Sprayhead Funnel Problem Probable CauseFunnel loading Diagnostics Cause Things to CheckComponent Access ServiceContents Service Control BoardService Control Board Model CEZ-APS/TS/TSR Control BoardService Switch Panel Model CDBC-APS/TC/TS/TSR Switch PanelON/OFF Switch Wiring Service Brew Switch Start Model CEZ-APS/TS/TSR Brew Switch WiringDispense Valve Dispense ValveLimit Thermostat Limit ThermostatTank Heater Tank HeaterService Tank Heater Tank Heater WiringRefill Valve Check for continuity across the refill valve coil terminals120V AC 2 Wire 120/208V AC 3 Wire 120/240V AC 3 Wire Levelsingle PhaseSchematic Wiring Diagram CEZ-APS/TS/TSR 120V AC 2 Wire Cdbc 15, 20 & 35 APS/TC/TS

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.
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