Bunn T3A, T6A service manual Adjusting Brew Volumes, Operating Controls, ON/OFF Switch T3 only

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INITIAL TIMER ADJUSTMENT (cont.)

10.Install the ferrule and screen in the funnel. Load the funnel with a BUNN® paper filter and approximately four ounces of loose tea leaves. Depress the start button to brew tea and observe the funnel drip out and the dilution streams near the end of the cycle. The dilution stream should stop approximately thirty seconds after the drip out has stopped.

11.If this does not happen, load the funnel with a fresh filter and tea, rotate the delay dial up or down accordingly and repeat Step 10 until proper timing is achieved.

12.Replace the top panel. The brewer is now ready for normal operation.

ADJUSTING BREW VOLUMES

CAUTION - Disconnect the power source from the brewer prior to the removal of any panel for the replacement or adjustment of any component.

NOTE: Prior to setting or modifying batch sizes, check that the brewer is connected to water supply, the tank is properly filled, and a funnel and server are in place.

1.Modifying batch sizes. To modify a batch volume, first check that the SET/LOCK switch is in the “SET” position on the circuit board.

To increase a batch size. Press and hold the START or BREW 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 previous volume setting will remain in memory) and press it again one or more times. 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 batch size. Press and release the START or BREW switch once for every two-second interval to be removed from the total brew time period; then immediately press and hold down the START or BREW 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 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 batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the “SET” position on the circuit board. Press and hold the START or BREW 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 ON/OFF switch to “OFF” (lower). The brewer remem- bers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.

NOTE: When brewing coffee, batch volumes will decrease due to absorption by the coffee grounds.

3.Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times once programmed, you can set the SET/LOCK switch to the “LOCK” position. This will prevent any program- ming to be done until switch is once again placed in the “SET” position.

OPERATING CONTROLS

A. ON/OFF SWITCH (T3 ONLY)

ON - Placing the switch in the"ON" (left) position allows the start switch to activate a timed brew cycle for three gallons of tea.

OFF - Placing the switch in the "OFF" (right) position stops the brew cycle. Stopping a brew cycle after it has been started will not stop the flow of water into the funnel until the tank syphons down to its proper level. The switch should always be placed in this position after a brew cycle and whenever the brewer is unattended.

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Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty IntroductionUser Notices #00831.0000 #00656.0000 #03408.0000 #03409.0000Electrical Requirements Plumbing RequirementsElectrical Hook-Up Initial Timer Adjustment Initial SET-UP Fill & HeatAdjusting Brew Volumes ON/OFF Switch T3 onlyOperating Controls Start Switch CleaningSelector Switch T6 only TEA BrewingTroubleshooting Problem Probable Cause Brew cycle will not startRemedy Troubleshooting ProblemProbable Cause Remedy Problem Probable Cause Remedy Dilution cycle will not start Dilution Solenoid ValveSpitting or excessive steaming Control Thermostat Drip-out time too longDripping from sprayhead Beverage overflows dispenser Weak beverage Dry tea leaves remain in the funnel Brewer is making unusal noisesPlumbing Lines Water Supply Tank Heater Service Component AccessContents Service Brew Solenoid ValveService Brew Solenoid Valve Solenoid Valve TerminalsIf voltage is present as described, proceed to #4 Brew TimerIndication must be If continuity is not present as described, refer toService Digital Brew Timer Late Models If voltage is as described, proceed to #7Service Digital Brew Timer Late Modelscont Digital Timer WiringControl Thermostat Test Procedure Disconnect the brewer from the power source Dilution Solenoid ValvesDilution Timer ClockwiseSource. The indication must be Limit Thermostat With a voltmeter, check the voltage acrossON/OFF or Selector Switch On left or right position WHI/VIOStart Switch Tank Heater 10145 072600 10145 072600 10145 072600
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T6, T6A, T3A specifications

The Bunn T6A, T3A, T6, and T3 are part of a distinguished line of commercial coffee brewers engineered for consistency, efficiency, and top-notch brew quality. These machines are well-suited for cafes, restaurants, and specialty coffee shops where reliability and performance are paramount.

The Bunn T6A is designed to brew large quantities, accommodating high-demand environments. With a capacity of six gallons per hour, this machine can quickly fulfill orders, ensuring that customers receive fresh, hot coffee without delay. It features a programmable touchpad that allows users to customize brew settings, enabling them to fine-tune extraction times and temperatures for various coffee blends. The T6A’s dual-float system provides precise water control, preventing overflow and enhancing safety.

The Bunn T3A is another exceptional model in this lineup, designed for both versatility and speed. It boasts a three-gallon capacity, making it ideal for medium-sized establishments. The T3A is equipped with Bunn's patented SplashGard funnel, which helps protect users from hot water splashes, providing an additional layer of safety. Its advanced brewing technology allows for an optimal brew temperature range, ensuring that coffee is extracted to perfection every time.

The Bunn T6 is similar to the T6A in its heavy-duty construction but focuses on a slightly different brewing capacity. Capable of producing back-to-back brews, the T6 can keep up with high-volume demands. This model features a digital brewer interface, making it user-friendly while providing detailed feedback on the brewing process. Its robust design allows for easy maintenance, ensuring it remains in peak operating condition.

Lastly, the Bunn T3 serves as a compact alternative in the series, suited for locations with limited space but requiring high-quality coffee. The T3 can brew up to three gallons per hour, seamlessly fitting into smaller setups without compromising on performance. Like its counterparts, it features programmable settings and quick brew times, providing flexibility and efficiency.

Together, the Bunn T6A, T3A, T6, and T3 represent a versatile range of commercial coffee brewing solutions. Each model is designed to deliver exceptional coffee, maintain consistent quality, and provide ease of use, making them integral tools for any serious coffee business. Whether high volume or limited space, Bunn caters to diverse needs while upholding the highest standards in coffee brewing technology.
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