Bunn TU3 service manual Digital Timer Wiring

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SERVICE (cont.)

DIGITAL BREW TIMER (Late Models) (cont.)

To increase a brew volume, place the ON/OFF switch in the "ON" position, press and hold the START switch until three clicks are heard. Release the switch and press it again one or more times. (Failure to re- lease the switch within two seconds after the third click causes the volume setting to be aborted and pre- vious volume setting will remain in memory.) Each time the switch is pressed, two seconds are added to the brew time period. Allow the brew cycle to finish in order to verify that the desired volume has been achieved.

To decrease a brew volume, place the ON/OFF switch in the "ON" position, press and release the START switch once for every two-second interval to be removed from the total brew time period; then im- mediately press and hold down the START switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and pre- vious volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the de- sired volume has been achieved.

2.Setting brew volumes. To set a brew volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. Place the ON/OFF switch in the "ON" position, press and hold the START switch until three distinct clicks are heard and then release the switch. (Failure to release the switch within two seconds after the third click causes the volume set- ting to be aborted and previous volume setting will remain in memory.)

View the level of the liquid being dispensed. When the desired level is reached, turn the ON/OFF switch to "OFF".

NOTE: Several ounces of water will continue to sy- phon from the tank after turning the switch "OFF". The brewer remembers this volume and will continue to brew batches of this size until the volume setting pro- cedure is repeated.

NOTE: When brewing tea, volume will decrease due to absorption by the tea grounds.

3.Setting programming disable feature. If it be- comes necessary to prevent anyone from changing brew time once programmed, you can set the SET/ LOCK switch to the "LOCK" position. This will prevent any further programming until switch is once again put into the "SET" position.

TL1 - WHI/VIO to Dilution Timer and

WHI/VIO to ON/OFF Switch

TL2 - WHI to Power Cord (100V & 120V) or

RED to Power connector (240V) and

WHI to Dilution Timer (100V & 120V) or

RED to Dilution Timer (240V)

TL3 - WHI/ORN to Start Switch

TL4 - WHI/GRN to Brew Solenoid

TL5 - WHI/YEL to Start Switch

P2037

FIG. 7 DIGITAL TIMER WIRING

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10225

103000

 

 

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Contents Phone 217 529-6601 FAX 217 TU3BUNN-O-MATIC Commercial Product Warranty ContentsIntroduction #00831.0000 #00656.0000 User Notices#03408.0002 #03409.0002 #03408.0000 #03409.0000 Plumbing Requirements Electrical RequirementsElectrical Hook-Up Stopped Initial SET-UPAuto Sweetener SET-UP Adjusting Brew VolumesInitial SET-UP Operating Controls CleaningCleaning Auto Sweetener CleaningTEA Brewing Problem Probable Cause TroubleshootingRemedy Problem TroubleshootingRemedy Dilution cycle will not start Dilution Solenoid Valve Problem Probable Cause RemedyTicles clogging the drip-out tip Spitting or excessive steamingDrip-out time too long Control Thermostat Funnel TipDilution Solenoid Valve See Dilution TimerIng Water Temperature Beverage overflows dispenser DispenserDry tea leaves remain in the funnel Remove and clean lime off the tank heater. SeeComponent Access ServiceContents Brew Solenoid Valve ServiceSolenoid 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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