Bunn T3A, T6A service manual Service, Component Access, Contents

Page 14

SERVICE

 

 

 

This section provides procedures for testing and

 

 

 

replacing various major components used in this

 

 

 

brewer should service become necessary. Refer to

 

 

 

Troubleshooting for assistance in determining the

 

 

 

cause of any problem.

 

 

 

WARNING - Inspection, testing, and repair of electri-

 

 

 

cal equipment should be performed only by qualified

 

 

 

service personnel. The brewer should be disconnected

 

 

 

from the power source when servicing, except when

 

 

 

electrical tests are required and the test procedure spe-

 

 

 

cifically states to plug in the brewer.

 

 

 

COMPONENT ACCESS

 

 

 

WARNING - Disconnect the brewer from the power

 

 

 

source before the removal of any panel or the replace-

 

 

 

ment of any component.

 

 

 

All components are accessible by the removal of

T6

 

 

the top cover and rear inspection panel.

 

 

 

 

 

The top cover is attached with four #6-32 screws.

 

 

 

Removal of the top cover will allow access to ON/OFF

 

 

 

or SELECTOR switch, start switch, brew timer, dilu-

 

 

 

tion timer, control thermostat, limit thermostat and

 

 

 

tank heater,

 

 

 

The rear inspection panel is attached with six #8-

 

 

 

32 screws. Removal of the rear panel will allow access

 

 

 

to the brew solenoid valve, dilution solenoid valve(s)

 

 

 

and .195 GPM flow control and check valve.

 

 

 

Contents

 

 

 

Brew Solenoid Valve ........................................... 15

 

 

 

Brew Timer (Early Models) ................................. 17

 

 

 

Digital Brew Timer (Late Models) ....................... 18

T3

 

 

Control Thermostat ............................................. 20

 

 

 

 

 

Dilution Solenoid Valve ....................................... 21

FIG. 1 COMPONENT ACCESS

P1832.35

 

 

Dilution Timer ..................................................... 22

 

 

 

Limit Thermostat ................................................ 23

 

 

 

ON/OFF Switch & Selector Switch ...................... 24

 

 

 

Start Switch ........................................................ 26

 

 

 

Tank Heater ......................................................... 27

 

 

 

Wiring Diagrams .................................... 28 thru 30

 

 

 

Page 14

 

10145

072600

 

 

 

Image 14
Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty IntroductionUser Notices #00831.0000 #00656.0000 #03408.0000 #03409.0000Electrical Hook-Up Electrical RequirementsPlumbing Requirements Initial Timer Adjustment Initial SET-UP Fill & HeatOperating Controls Adjusting Brew VolumesON/OFF Switch T3 only Start Switch CleaningSelector Switch T6 only TEA BrewingRemedy TroubleshootingProblem Probable Cause Brew cycle will not start Probable Cause Remedy TroubleshootingProblem Problem Probable Cause Remedy Dilution cycle will not start Dilution Solenoid ValveDripping 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 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 ValvesSource. The indication must be Dilution TimerClockwise 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.