Bunn T6A, T3A service manual Dilution Timer, Clockwise, Source. The indication must be

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SERVICE (cont.)

DILUTION TIMER

FIG. 11 DILUTION TIMER

P2207.40

 

Location:

The dilution timer is located inside the hood on the right side. It consists of the dial plate with two dials and circuit board.

Test Procedure:

1.

Disconnect the brewer from the power source and

 

remove the wires from terminals TL3, TL4, & TL5

 

of the timer and rotate both dials fully counter-

 

clockwise.

2.

With a voltmeter, check the voltage across termi-

 

nals TL1 and TL2 when the ON/OFF switch is in

 

the "ON" position. Connect the brewer to the power

 

source. The indication must be:

 

a) 120 volts ac for two wire 120 volt models.

If continuity is present as described, reconnect the wires to terminals TL3, TL4, & TL5 of the timer board and proceed to #5.

If continuity is not present as described, refer to the Wiring Diagrams and check the wiring harness.

5.With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the ON/OFF or selector switch is in the "ON" (T3 left, T6 left or right) po- sition and the start switch is momentarily placed in the lower position. Connect the brewer to the power source. After a delay of approximately three minutes, the indication must be:

a)120 volts ac for two wire 120 volt models for approximately one minute and then return to its previous indication.

b)240 volts ac for two wire 240 volt models for approximately one minute and then return to its previous indication.

c)100 volts ac for two wire 100 volt models for approximately one minute and then return to its previous indication.

6.Disconnect the brewer from the power source.

If voltage is present as described, the timer is operat- ing properly. Adjust the timer dials as required.

If voltage is not present as described, replace the timer.

Removal and Replacement:

1.Remove all wires from the timer.

2.Remove the circuit board and dial plate from the brackets.

4.Install the new dial plate and circuit board to the brackets.

5.Refer to Fig. 12 when reconnecting the wires.

6.Adjust the timer dials as required.

b) 240 volts ac for two wire 240 volt models.

c) 100 volts ac for two wire 100 volt models.

3. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the Wir- ing Diagrams and check the wiring harness.

4.Check for continuity across the green and red/ black wires when the start switch is held in the lower position.

WHI/BLU to Dilution Solenoid

RED/BLK to Start Switch

WHI to Brew Timer (100V & 120V Models)

RED to Brew Timer (240V Models)

WHI/VIO to ON/OFF Switch

GRY to Selector Switch (Half Batch Option Only)

PNK to Selector Switch (Half Batch Option Only)

GRN to Start Switch

PNK to Selector Switch (Half Batch Option Only) GRY to Selector Switch (Half Batch Option Only)

FIG. 12 DILUTION TIMER TERMINALS

P1281

 

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10145

072600

 

 

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Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty IntroductionUser Notices #00831.0000 #00656.0000 #03408.0000 #03409.0000Plumbing Requirements Electrical RequirementsElectrical Hook-Up Initial Timer Adjustment Initial SET-UP Fill & HeatON/OFF Switch T3 only Adjusting Brew VolumesOperating Controls Start Switch CleaningSelector Switch T6 only TEA BrewingProblem Probable Cause Brew cycle will not start TroubleshootingRemedy Problem TroubleshootingProbable Cause Remedy Problem Probable Cause Remedy Dilution cycle will not start Dilution Solenoid ValveControl Thermostat Drip-out time too long Spitting or excessive steamingDripping from sprayhead Beverage overflows dispenser Weak beverage Brewer is making unusal noises Dry tea leaves remain in the funnelPlumbing Lines Water Supply Tank Heater Component Access ServiceContents 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 ValvesClockwise Dilution TimerSource. 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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