SERVICE (cont.)

If voltage is not present as described, refer to the Wir-

ON/OFF SWITCH (SELECTOR SWITCH - OPTIONAL)

ing Diagrams and check the wiring harness.

 

P1187.40

FIG. 16 ON/OFF SWITCH

Location:

The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel.

Test Procedure:

Brewers W/Out Half Batch Option

1.Disconnect the brewer from the power source.

2.Remove the black and white/violet wires from the switch terminals.

3.With a voltmeter, check the voltage across the black wire removed from the ON/OFF switch and the white wire remaining on the switch terminal.

4.Connect the brewer to the power source. The in- dication must be 120 volts ac for two wire 120 volt models.

5.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

6.Check for continuity across the center and end terminals of the top row when the switch is in the ÒONÓ position.

If continuity is present as described, replace the wires, the switch is operating properly.

If continuity is not present as described, replace the switch.

Brewers W/Half Batch Option

1.Disconnect the brewer from the power source.

2.Remove the black wire from the top center switch terminal.

3.With a voltmeter, check the voltage across the black wire removed from the selector switch and the white wire or red wire on the tank heater.

4.Connect the brewer to the power source. The in- dication must be:

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

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

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

5.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

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

6.Check for continuity across the center and left or right terminals of the top row when the switch is in the ÒFULL" or "HALFÓ position.

If continuity is present as described, replace the wires, the switch is operating properly.

If continuity is not present as described, replace the switch.

7.Disconnect the pink and gray wires from the left and center terminals.

8.Check for continuity across the left and center ter- minals in rows two, three and four with the switch in the half batch position.

If continuity is present as described, replace the wires the switch is operating properly.

If continuity is not present as described, replace the switch.

Page 24

10225

021599

 

 

Page 24
Image 24
Bunn TU3 service manual Ing Diagrams and check the wiring harness, ON/OFF Switch

TU3 specifications

The Bunn TU3 is a renowned commercial coffee brewer known for its reliability and performance in bustling coffee shops, restaurants, and diners. Designed to cater to high-demand environments, the TU3 stands out with a variety of features that ensure an optimal brewing experience.

One of the primary characteristics of the Bunn TU3 is its capability to brew large volumes of coffee efficiently. It has a 3-gallon capacity, making it ideal for establishments that serve numerous customers throughout the day. This model can produce up to 19 gallons of coffee per hour, allowing establishments to keep pace with customer demand without sacrificing quality or flavor.

At the heart of the Bunn TU3's performance are its advanced brewing technologies. The brewer features a patented "multi-stream" spray head that evenly distributes hot water over coffee grounds, ensuring optimal extraction for a richer taste. This technology contributes to the consistent flavor profile that customers expect in a quality cup of coffee.

The TU3 is also equipped with a built-in hot water faucet, providing added convenience for brewing tea or instant beverages. Operators can easily access boiling water without interfering with the brewing process, streamlining service during peak hours. The adjustable temperature settings further enhance control over the brewing process, allowing for customization based on the coffee type or personal preference.

In terms of construction, the Bunn TU3 is built to withstand the rigors of commercial use. The brewer boasts a durable stainless steel body that is not only stylish but also easy to clean, helping maintain a professional appearance in any setting. Additionally, the brewer's design incorporates features such as a splash guard and easy-to-use controls, making it user-friendly for staff members.

Energy efficiency is another highlight of the Bunn TU3. Its innovative design helps in reducing energy consumption while still providing rapid brewing capabilities. This feature is particularly appealing to environmentally conscious operators looking to minimize their operational impact.

Overall, the Bunn TU3 coffee brewer combines speed, reliability, and exceptional brewing technology, making it a top choice for businesses that prioritize quality coffee service. Its combination of durability, efficiency, and user-friendly features ensures that it can handle the demands of any high-volume coffee operation, delivering excellent results cup after cup.