Bunn TWF service manual Service Digital Brew Timer Iced TEA Late Modelscont, Digital Timer Wiring

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SERVICE (cont.)

DIGITAL BREW TIMER (ICED TEA - Late Models)(cont.)

1.Modifying brew volumes. To modify a brew vol- ume, first check that the SET/LOCK switch is in the “SET” position on the circuit board.

To increase a brew volume, place the TEA/OFF/ COFFEE switch in the “TEA” position, press and hold the START switch until three clicks are heard. Release the switch and press it again one or more times. (Fail- ure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous 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 TEA/OFF/ COFFEE switch in the “TEA” position, press and re- lease the START switch once for every two-second interval to be removed from the total brew time pe- riod; then immediately press and hold down the START switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds af- ter the third click causes the volume setting to be aborted and previous volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the desired 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 TEA/OFF/COF- FEE switch in the “TEA” 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 setting 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 TEA/OFF/COF- FEE 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 procedure is repeated.

NOTE: When brewing coffee, volume will decrease due to absorption by the coffee 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 pre- vent any further programming until switch is once again put into the “SET” position.

TL1 - WHI/VIO to Iced Tea Solenoid and WHI/VIO to TEA/OFF/COFEE Switch

TL2 - WHI to Power Cord (120V Models) or WHI to Terminal Block (120/208V Models)

TL3 - ORN to START Switch

TL4 - WHI/BLU to Iced Tea SolenoidP2037 TL5 - YEL to START Switch

FIG. 13 DIGITAL TIMER WIRING

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10510

071000

 

 

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Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty ContentsIntroduction User Notices #00656.0000 #03408.0000 #00831.0000 #02822.0000 #03409.0000Plumbing Requirements Electrical RequirementsElectrical Hook-Up Initial SET-UP Adjusting Brew Volumes CleaningOperating Controls TEA/OFF/COFFEE SwitchStart Switch BrewingTroubleshooting Problem Probable Cause RemedyTroubleshooting Problem Probable Cause RemedyBrew Solenoid Valve Iced Tea Dilution Iced Tea cycle will not Start SwitchBrew Timer Iced Tea Dilution Solenoid ValveSerious leaks Level in the dispenser. 750 GPM Pointing towards brewerSpitting or excessive steaming Lime Build-up Drip-out time too long Funnel TipProblem RemedyFilter Type Tea or Coffee Water TemperatureWeak beverage Used for proper extractionComponent Access ServiceContents Brew Solenoid Valve HOT Coffee ServiceSolenoid valve Brew Solenoid Valve Iced TEA Brew Timer HOT COFFEE- Early Models Digital Brew Timer If voltage is as described, proceed to #7Service Digital Brew Timer HOT Coffee Late Modelscont Digital Timer WiringService Brew Timer Iced TEA Early Models Iced TEA Brew Timer TerminalsService Digital Brew Timer Iced TEA Late Models Service Digital Brew Timer Iced TEA Late Modelscont Test Procedures Disconnect the brewer from the power source Control ThermostatDilution Solenoid Valve Remove the blue wire from the limit thermostat Limit ThermostatTEA/OFF/COFFEE Switch TEA/OFF/COFFEE SwitchStart Switch Start SwitchTank Heater Tank HeaterService Thermal Fuse Models W/Faucet Only Thermal FuseService Half Batch Switch Optional GRY to Iced Tea Brew Timer PNK to Iced Tea10510 081599 Ready Indicator BLU

TWF specifications

The Bunn TWF series is a versatile and high-performance coffee brewing system designed to meet the demanding needs of commercial coffee establishments. Renowned for its reliability and consistency, the Bunn TWF is engineered for high volume production while maintaining exceptional quality in every cup.

One of the main features of the Bunn TWF is its dual-voltage capability, which makes it adaptable to various electrical systems, ensuring that businesses can use it in different locations with ease. It is compatible with both 120V and 220V outlets, providing flexibility for commercial environments.

The TWF employs Bunn's innovative brewing technology, which includes a patented digital pulse brew feature. This system optimizes the extraction process by controlling the flow rate and brewing time, enhancing the flavor profile of the coffee and ensuring that each batch is rich and full-bodied. The ThermoFresh technology allows for excellent thermal retention, ensuring that the coffee remains hot and fresh for extended periods without a heated plate that can alter the taste.

Another significant characteristic of the Bunn TWF is its brewing capacity. The machine can brew up to 16.3 gallons of coffee per hour, making it an ideal choice for busy cafes, restaurants, and catering services. The large capacity also translates to less downtime, enabling staff to serve customers more efficiently.

The Bunn TWF is equipped with a user-friendly control interface, featuring intuitive buttons and an easy-to-read display. This allows for precise programming and brewing options, accommodating various coffee types and recipes. Users can easily set up their preferred brewing parameters, making it convenient to replicate the same great taste repeatedly.

Moreover, the design of the Bunn TWF emphasizes durability and ease of maintenance. Constructed from high-quality materials, it can withstand the rigors of daily use in a bustling coffee shop environment. The machine is also designed for easy cleaning, with removable components that simplify upkeep and prolong its lifespan.

In conclusion, the Bunn TWF is an exceptional choice for those in the coffee business looking to elevate their brewing game. With its outstanding features, advanced technologies, and user-focused design, it stands out as a leader in commercial coffee brewing solutions. Whether for a high-traffic café or a catering operation, the Bunn TWF is engineered to deliver quality and efficiency while satisfying the most discerning coffee connoisseurs.
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