Bunn TB3Q-LP ON/OFF Switch, Refer to when reconnecting the wires Location, Switch terminals

Page 21

SERVICE (cont.)

ON/OFF SWITCH

P3034

FIG. 10 ON/OFF SWITCH

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 end terminals of the top row when the switch is in the “ON” 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.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to FIG. 11 when reconnecting the wires.

Location:

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

Test Procedure:

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

BLK to Power Cord

WHI/VIO to On/

Off Switch

WHI/VIO to Brew

Timer TL1

WHI/VIO to On/

Off Switch

WHI to Brew Timer TL2 or RED to Brew Timer TL2

black wire removed from the ON/OFF switch and

the white wire on the 100 and 120 volt two wire,

and red wire on the 230 volt two wire remaining

on the switch terminal.

4. Connect the brewer to the power source. The in-

dication must be:

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

b) 230 volts ac for two wire 230 volt models.

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

P1801

FIG.11 ON/OFF SWITCH TERMINALS

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37236 080504

 

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Contents Phone 217 529-6601 FAX 217 TB3Q TB3Q-LPContents BUNN-O-MATIC Commercial Product WarrantyIntroduction #37881.0000 User Notices#06064.0000 #32540.0000Plumbing Requirements Electrical RequirementsProceed as follows Electrical Hook-UpCentrate Machines will Yield only 76 OZ Initial SET-UPAuto Sweetener SET-UP Adjusting Brew Volumes Cleaning Auto Sweetener CleaningOperating Controls TEA Brewing Problem Probable Cause Remedy TroubleshootingProblem TroubleshootingProbable Cause RemedyTicles clogging the drip-out tip Drip-out time too long Funnel TipSweetener is not working Sweetener box is empty Sure it is not out of productDripping from sprayhead Brew TimerSyphon System Lime Build-up Beverage overflows dispenser Brew Solenoid ValveProblem Probable Cause Remedy Component Access ServiceTest Procedures Disconnect the brewer from the power source ServiceBrew Solenoid Valve Solenoid valveIf voltage is as described, proceed to #7 Digital Brew TimerDigital Timer Wiring Service Digital Brew TimerControl Thermostat Control ThermostatLimit Thermostat Remove the blue/black wire from the limit ther- mostatRefer to when reconnecting the wires Location ON/OFF SwitchSwitch terminals On the switch terminalStart Switch Start SwitchUNSWEET/OFF/SWEET Switch Sweetner Option Sweetner Solenoid Valve Sweetner Solenoid ValveTank Heater Volts AC Volts AC Wire Single PhaseSchematic Wiring Diagram TB3QA
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TB3Q, TB3Q-LP specifications

The Bunn TB6Q, TB3-LP, TB6, TB3Q, and TB3Q-LP coffee brewers are a popular series of commercial machines designed for high efficiency and optimal performance in busy environments such as cafes, restaurants, and offices. These machines are crafted with a focus on quality, dependability, and advanced brewing technology to deliver a superior coffee experience.

One of the standout features across the Bunn TB series is the ability to brew large quantities of coffee quickly. The TB6Q, for instance, can brew up to 6 gallons of coffee per hour. This high volume brewing capability ensures that establishments can keep up with demand, especially during peak hours. Additionally, the machines come with a unique design that incorporates a pre-infusion feature, allowing for the coffee grounds to be evenly saturated before brewing begins, enhancing the flavor extraction process.

The TB3-LP model is designed for low-profile applications where counter space may be limited. Despite its compact design, it still offers impressive performance, brewing up to 3.8 gallons per hour. The low-profile feature makes it an ideal choice for settings that require efficiency and space optimization without compromising on the quality of the brew.

Another notable member of the series, the TB3Q and TB3Q-LP, feature a quick brew ratio, allowing users to brew up to 3 gallons of coffee in just a few minutes. These models are equipped with easy-to-use controls for simplified operation, making them perfect for staff training and user accessibility.

All models in the TB series include a hot water faucet, allowing users to dispense hot water for tea or other hot beverages quickly. This versatility adds significant value, especially in multi-beverage settings.

Regarding durability, the Bunn TB series is constructed with high-quality materials, ensuring longevity and reliability. The machines also feature internal components that are easy to access for maintenance, thus reducing downtime and improving the overall efficiency of the machine.

In terms of technology, these brewers often incorporate advanced diagnostics to promptly identify service needs or issues. The machines come with a precise brewing temperature control system that ensures each cup is brewed at the optimal temperature for maximum flavor extraction.

Overall, Bunn's TB6Q, TB3-LP, TB6, TB3Q, and TB3Q-LP coffee brewers represent the culmination of advanced brewing technology and practical design for commercial coffee solutions. Their efficiency, quality, and ease of use make them a staple in many establishments, solidifying Bunn's reputation as a leader in the coffee brewing industry.
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