Bunn ITB, TWIN manual Heating Time TOO Long

Page 35

TROUBLESHOOTING (cont.)

 

 

 

PROBLEM

 

PROBABLE CAUSE

 

REMEDY

Water will not heat or display shows

1. Limit Thermostat

 

Remove power from the brewer.

HEATING TIME TOO LONG.

 

 

Check for continuity through the

 

 

 

 

limit thermostat. CAUTION: Do not

 

 

 

 

eliminate or bypass limit thermo-

 

 

 

 

stat. Use only replacement part

 

 

 

29329.0001.

 

 

2. Temperature probe

 

Remove the probe from the grom-

 

 

 

 

met and submerge in a water bath

 

 

 

 

of approximately 70°F (21°C).

 

 

 

 

Connect an ohmmeter to the pins

 

 

 

 

in the connector. At 60°F (16°C),

 

 

 

 

the reading should be 15.3k ± 2k

 

 

 

 

OHMS, at 70°F (21°C) the reading

 

 

 

 

should be 11.8k ± 2k OHMS, and

 

 

 

 

at 80°F (27°C) the reading should

 

 

 

 

be 9.3k ± 2k OHMS. If the probe is

 

 

 

 

within these parameters, reconnect

 

 

 

 

to the control board.

 

 

3. Tank heaters

 

Remove power from the brewer.

 

 

 

 

Check for continuity through the

 

 

 

 

tank heaters. If no continuity is

 

 

 

 

present, check for a wiring problem

 

 

 

 

(consult wiring schematic), then

 

 

 

 

replace the tank heater if no wiring

 

 

 

 

problem is found.

 

 

4. Control Board

 

Remove power from the brewer.

 

 

 

 

Connect a voltmeter across the

 

 

 

 

tank heater. Reapply power to the

 

 

 

 

brewer and refer to testing outputs

 

 

 

 

on page 48. If the voltage measured

 

 

 

 

when the tank heater is turned on

 

 

 

 

is very low or zero, then substitute

 

 

 

 

a control board know to be good

 

 

 

 

working order.

Page 35

41581.2 091609

 

Page 34 Page 36
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Page 34 Page 36
Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisBUNN-O-MATIC Commercial Product Warranty Itcb ContentsITB Programming the Brewer ICBProgramming the Brewer ICB TwinProgramming Functions Level ITBItcb Set Recipes Temps Itcb ITBProcedure to program the coffee name Using a Recipe Card to load recipesProcedure to program the AD SET Language Procedure for setting Brew LockoutProcedure for setting Language ICB Default Recipe Chart ICBDefault Assignments UnitsBy Pressing SHOW, VIEW/MODIFY Items ICBSweet Meter ITB/ITCB with Factory SweetenerDONE? When finished, press the other batch size and repeat step #Setting Pulse Brew Easy Pulse Brew Setting Pulse Brew/PreInfusion ManualProcedure Setting Drip TimeSetting Sweet Meter Optional on Itcb ICB ITB/ITCB Overview only Some Screens OmittedNo Name Coffee Itcb Procedure to select switch recipesProcedure to disable a Brew Switch Select Done to disable that brew switchICB Procedure for Setting the RecipeSET NEW Recipe Coffee only SET NEW Coffee ItemsReady Degree Enable ADSSET Temp ICB Master Temp Itcb Main ScreenFrom the NEW AD? screen, select Card Enable SanitationEnable Sanitation Procedure for enabling sanitation Range 0.0 to 72.0 hrsHot Tea 0.5 to 8.0 hrs Enable Energy SaverEnable Fresh Timer Able FreshtimerSpray OZ/M Procedure to set the sprayhead flow rateProcedure to adjust the bypass flow rate setting Procedure to adjust the dilution flow rate settingCalibrate Flow Procedure to calibrate the sprayhead flow rateProcedure to calibrate the bypass flow rate ICB Procedure to calibrate the dilution flow rate ItcbICB Series Programming Functions Level 2 ITB/ITCB Procedure to view/reset the brew countersBrew Counters YES SET Recipe Temps Itcb onlyAsset Number Service NumberService Tools Factory DefaultsTroubleshooting Remedy TroubleshootingProblem Probable CauseProblem Probable Cause Remedy If the left three digit number LongTing Obstructions. Clear or replace Refill valve Automatic refill will not operate or Problem Probable CauseControl Board ON/OFF Switch To it is secure Water flows into tank continuously Refill valveTing Heating Time TOO Long As required Recipe settingsNo bypass water Bypass valve Lime buildup Been set for the current recipe90 psi 138 and 620 kPa Brew volume adjustmentInconsistent beverage level Server/dispenserVibrate during operation Tank heaters Remove and clean lime off tank HeatersFor proper extraction SolenoidsBe used for proper extraction Water temperatureWeak beverage Type of paper filter Coffee
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ITB, 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.
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