Bunn TU3 service manual Troubleshooting, Problem Probable Cause, Remedy

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TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department.

¥Inspection, testing, and repair of electrical equipment should be performed only by qualified service person- nel.

¥All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

¥Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

¥Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

¥The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.

¥Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

¥This brewer is heated at all times. Keep away from combustibles.

WARNING Ð

¥Exercise extreme caution when servicing electrical equipment.

¥Unplug the brewer when servicing, except when electrical tests are specified.

¥Follow recommended service procedures

¥Replace all protective shields or safety notices

Problem

Probable Cause

Brew cycle will not start

1. No water

 

2. No power or incorrect voltage to

 

the brewer

 

3. External Strainer/ Flow Control

 

(.750 GPM)

Remedy

Water lines and valves to the brewer must be open.

Check circuit breakers or fuses.

(A)Direction of flow arrow must be pointing towards the brewer.

(B)Remove the strainer/flow con- trol and check for obstructions. Clear or replace.

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10225

021599

 

 

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Contents Phone 217 529-6601 FAX 217 TU3Contents BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices #00831.0000 #00656.0000#03408.0002 #03409.0002 #03408.0000 #03409.0000 Electrical Requirements Plumbing RequirementsElectrical Hook-Up Stopped Initial SET-UPAdjusting Brew Volumes Auto Sweetener SET-UPInitial SET-UP Operating Controls CleaningAuto Sweetener Cleaning CleaningTEA Brewing Troubleshooting Problem Probable CauseRemedy Troubleshooting ProblemRemedy Dilution cycle will not start Dilution Solenoid Valve Problem Probable Cause RemedyDrip-out time too long Control Thermostat Spitting or excessive steamingFunnel Tip Ticles clogging the drip-out tipIng Water Temperature See Dilution TimerBeverage overflows dispenser Dispenser Dilution Solenoid ValveDry tea leaves remain in the funnel Remove and clean lime off the tank heater. SeeService Component AccessContents Service Brew Solenoid ValveSolenoid valve Brew Timer Service Brew Timer Early ModelsIf voltage is as described, proceed to #7 Service Digital Brew Timer Late ModelsDigital Timer Wiring Control Thermostat Dilution Solenoid Valve Dilution Solenoid ValveDilution Timer Indication must be Limit ThermostatON/OFF Switch Ing Diagrams and check the wiring harnessON/OFF Switch Selector Switch Optionalcont Start Switch Start SwitchSweetener Solenoid Valve Optional Tank Heater 10225 071500 10225 071500 Volts AC Single Phase10225 071500
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TU3 specifications

The Bunn TU3 is a renowned commercial coffee brewer known for its reliability and performance in bustling coffee shops, restaurants, and diners. Designed to cater to high-demand environments, the TU3 stands out with a variety of features that ensure an optimal brewing experience.

One of the primary characteristics of the Bunn TU3 is its capability to brew large volumes of coffee efficiently. It has a 3-gallon capacity, making it ideal for establishments that serve numerous customers throughout the day. This model can produce up to 19 gallons of coffee per hour, allowing establishments to keep pace with customer demand without sacrificing quality or flavor.

At the heart of the Bunn TU3's performance are its advanced brewing technologies. The brewer features a patented "multi-stream" spray head that evenly distributes hot water over coffee grounds, ensuring optimal extraction for a richer taste. This technology contributes to the consistent flavor profile that customers expect in a quality cup of coffee.

The TU3 is also equipped with a built-in hot water faucet, providing added convenience for brewing tea or instant beverages. Operators can easily access boiling water without interfering with the brewing process, streamlining service during peak hours. The adjustable temperature settings further enhance control over the brewing process, allowing for customization based on the coffee type or personal preference.

In terms of construction, the Bunn TU3 is built to withstand the rigors of commercial use. The brewer boasts a durable stainless steel body that is not only stylish but also easy to clean, helping maintain a professional appearance in any setting. Additionally, the brewer's design incorporates features such as a splash guard and easy-to-use controls, making it user-friendly for staff members.

Energy efficiency is another highlight of the Bunn TU3. Its innovative design helps in reducing energy consumption while still providing rapid brewing capabilities. This feature is particularly appealing to environmentally conscious operators looking to minimize their operational impact.

Overall, the Bunn TU3 coffee brewer combines speed, reliability, and exceptional brewing technology, making it a top choice for businesses that prioritize quality coffee service. Its combination of durability, efficiency, and user-friendly features ensures that it can handle the demands of any high-volume coffee operation, delivering excellent results cup after cup.
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