Bunn T3A, T6A service manual Limit Thermostat, With a voltmeter, check the voltage across

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SERVICE (cont.)

LIMIT THERMOSTAT

P2207.40

FIG. 13 LIMIT THERMOSTAT

Location:

The limit thermostat is located inside the hood on the tank lid.

Test Procedure:

1. Disconnect the brewer from the power source and

remove the black wire from the limit thermostat.

4.Remove the blue/black wire from the limit ther- mostat.

5.With a voltmeter, check the voltage across the ex- posed terminal of the limit thermostat and the white wire or red wire on the tank heater. Connect the brewer to the power source. The indication must be:

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

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

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

6.Disconnect the brewer from the power source.

If voltage is present as described, reconnect the blue wire to the limit thermostat. The limit thermostat is operating properly.

If voltage is not present as described, replace the limit thermostat.

Removal and Replacement

1.Remove both wires from the limit thermostat ter- minals.

2.Carefully slide the limit thermostat out from un- der the retaining clip.

3.Carefully slide the new limit thermostat into the retaining clip.

4.Refer to Fig. 14 when reconnecting the wires.

2.

With a voltmeter, check the voltage across the

 

black wire removed from the limit thermostat and

 

the white wire or red wire on the tank heater ter-

 

minal. Connect the brewer to the power source.

 

The indication must be:

 

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

 

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

 

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

3.

Disconnect the brewer to from the power source.

If voltage is present as described, reconnect the black wire and proceed to #4.

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

BLU/BLK to

Control

Thermostat

BLK to Power Cord or

Power Connector

FIG. 14 LIMIT THERMOSTAT TERMINALS

P1800

Page 23

10145

072600

 

 

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Contents Telephone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction Warranty#00831.0000 #00656.0000 #03408.0000 #03409.0000 User NoticesElectrical Hook-Up Electrical RequirementsPlumbing Requirements Initial SET-UP Fill & Heat Initial Timer AdjustmentOperating Controls Adjusting Brew VolumesON/OFF Switch T3 only TEA Brewing CleaningSelector Switch T6 only Start SwitchRemedy TroubleshootingProblem Probable Cause Brew cycle will not start Probable Cause Remedy TroubleshootingProblem Dilution cycle will not start Dilution Solenoid Valve Problem Probable Cause RemedyDripping from sprayhead Spitting or excessive steamingControl Thermostat Drip-out time too long Beverage overflows dispenser Weak beverage Plumbing Lines Water Supply Tank Heater Dry tea leaves remain in the funnelBrewer is making unusal noises Contents ServiceComponent Access Brew Solenoid Valve ServiceSolenoid Valve Terminals Service Brew Solenoid ValveIf continuity is not present as described, refer to Brew TimerIndication must be If voltage is present as described, proceed to #4If voltage is as described, proceed to #7 Service Digital Brew Timer Late ModelsDigital Timer Wiring Service Digital Brew Timer Late ModelscontControl Thermostat Dilution Solenoid Valves Test Procedure Disconnect the brewer from the power sourceSource. The indication must be Dilution TimerClockwise With a voltmeter, check the voltage across Limit ThermostatON/OFF or Selector Switch WHI/VIO On left or right positionStart 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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