Bunn TWIN service manual Troubleshooting Brewing Circuit

Page 18

TROUBLESHOOTING (cont.)

BREWING CIRCUIT (cont.)

PROBLEM

Brew cycle will not start (cont.)

Consistently low beverage level in the dispenser or beverage over- flows dispenser

PROBABLE CAUSE

8.Control board or dispense valve (CDBC & CEZ)

1. Brew volume (CDBC & CEZ)

2.Lime build up

3.Dispense Valve

REMEDY

If the start switch (CEZ) or switch panel (CDBC) is operating prop- erly, proceed as follows. Attach a voltmeter to the terminals of the dispense solenoid. Connect the brewer to the power source. Turn on the brewer and press the BREW switch. Voltage should be present at the solenoid terminals. If volt- age is not present, refer to the wiring diagrams and check the wiring harness. If voltage is present, check for continuity across the terminals of the sole- noid coil. If continuity is not present, replace the solenoid (See page 27). If continuity is present, the valve may be stuck closed.

Set up brewer according to in- structions in section Adjustments- Brew Volumes. (See pages 7 or 8) Using a stop watch or second hand, time the length of the brew cycle. Record this time inside the top lid. If service is ever needed again, use the time as reference to determine if time has changed.

Inspect the dispense valve and sprayhead for excessive lime de- posits. Delime as required.

Remove dispense valve and clear any obstructions. Rebuild or re- place valve if necessary. (See page 27)

Page 18

29319 091203

 

Page 17 Page 19
Image 18
Page 17 Page 19
Contents CEZ Cdbc Twin Contents IntroductionUser Notices Electrical Requirements Plumbing RequirementsElectrical Hook-Up Additional Warmer Switches ON/OFF SwitchBrew Switch Ready IndicatorCleaning Initial SET-UPCoffee Brewing CEZ Adjustments & Optional Settings Displaying Brew Temperature Cdbc Adjustments & Optional SettingsSetting Brew Temperature Setting Brew LockoutAdjusting Brew Volumes Pulse Brew Setup Procedure Cdbc Twin & Cdbcf Twin Troubleshooting Before troubleshooting this brewer, check for the followingProbable Cause TroubleshootingRefill Circuit Problem RemedyProblem Probable Cause Remedy Heating Circuit Problem Probable Cause Remedy Ings are taken 4b. Temperature Probe CEZ Remove the probe from3 of the J5 connector. At Control boardSet the temperature to 200F 4 of the J3 connector. At2b. Temperature Probe CEZ Remove the probe from Bilize. If temperature in tank isBrewing Circuit Problem Brew cycle will not startTroubleshooting Brewing Circuit Probable Cause Remedy Switch Move the two wires. Check forSupply and check wiring Holes are clear and unobDiagnostics Cause Things to CheckService Component AccessContents Service PC Control Board Model Cdbc Disconnect the 11-pin connector from the control panelService PC Control Board Model CEZ Control Boards CEZService Switch Panel Model Cdbc Switch Panels CdbcService ON/OFF Switches Model CEZ Service Brew Switch Start Model CEZ Bottom switch terminalMinals when the switch is released Service Dispense ValveLimit Thermostat Limit ThermostatsTank Heaters Tank HeaterService Tank Heaters Tank Heater WiringRefill Valve Check for continuity across the refill valve coil terminalsWarmer Elements Warmer ElementsSchematic Wiring Diagram CEZ Twin 0/6 Left Schematic Diagramwiring Twincdbc Schematic Wiring Diagram Cdbc Twin 2/2 Right
Related manuals
Manual 39 pages 50.34 Kb

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.

The design of the TWIN,ITB is user-friendly and intuitive. It includes an easy-to-read LED display that simplifies programming and monitoring of the brewing process. This streamlined interface enables baristas to adjust settings quickly and efficiently, significantly reducing wait times for customers. Additionally, the unit's low-profile design enables it to fit seamlessly into various kitchen layouts and countertops, optimizing valuable space.

Durability and reliability are at the forefront of the Bunn TWIN,ITB's construction. Built with high-quality materials, the brewer is designed to withstand the rigors of intense daily use. Its stainless-steel finish not only provides a sleek and professional appearance but also makes it easy to clean and maintain, ensuring longevity and excellent performance throughout its lifespan.

Furthermore, the TWIN,ITB features an impressive water capacity with a built-in hot water tank. This allows users to brew large batches of coffee without interruption and offers instant hot water for tea, soups, or other hot beverages. The efficient brewing system utilizes pre-infusion technology, which saturates the coffee grounds before extraction, enhancing the overall flavor and aroma of the brewed coffee.

In summary, the Bunn TWIN,ITB is an exceptional choice for any commercial establishment looking to provide high-quality coffee efficiently. Its dual brewing capabilities, advanced technologies, user-friendly design, durability, and additional features make it a valuable addition to any coffee service operation. Whether busy mornings or afternoon rushes, this brewer ensures that every cup of coffee meets the high standards of taste and quality that customers expect.
Top Page Image Contents