Bunn TB3Q-LP service manual Problem Probable Cause Remedy

Page 14

TROUBLESHOOTING (cont.)

 

 

PROBLEM

PROBABLE CAUSE

REMEDY

Weak beverage (cont.)

4. Funnel Loading

The BUNN® paper filter must be

 

 

centered in the funnel and the bed

 

 

of tea leaves leveled by gentle shak-

 

 

ing.

 

5. Water Temperature

Place an empty funnel on an empty

 

 

dispenser beneath the sprayhead.

 

 

Initiate a brew cycle and check the

 

 

water temperature immediately be-

 

 

low the sprayhead with a thermom-

 

 

eter. The reading should not be less

 

 

than 200°F (93°C). Adjust the con-

 

 

trol thermostat to increase the wa-

 

 

ter temperature. Replace if neces-

 

 

sary.

 

6. Low Brew Water Volume

Adjust needle valve to achieve 76

 

 

oz. water from the sprayhead. To

 

 

increase volume, turn counter-

 

 

clockwise. To decrease volume,

 

 

turn clockwise.

Dry tea leaves remain in the funnel

1. Funnel Loading

The BUNN® paper filter must be

 

 

centered in the funnel and the bed

 

 

of tea leaves leveled by gently shak-

 

 

ing.

Brewer is making unusual noises

1. Solenoid(s)

The nut on the solenoid(s) must be

 

 

tight or it will vibrate during opera-

 

 

tion.

 

2. Plumbing Lines

Plumbing lines should not be rest-

 

 

ing on the counter top.

 

3. Water Supply

(A) The brewer must be connected

 

 

to a cold water line.

 

 

(B) Water pressure to the brewer

 

 

must not exceed 90 psi (621 kPa).

 

 

Install a regulator if necessary to

 

 

lower the working pressure to ap-

 

 

proximately 50 psi (345 kPa).

 

4. Tank Heater

Remove and clean lime off the tank

 

 

heater. See page 25

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Contents TB3Q TB3Q-LP Phone 217 529-6601 FAX 217Introduction ContentsBUNN-O-MATIC Commercial Product Warranty #06064.0000 User Notices#37881.0000 #32540.0000Proceed as follows Electrical RequirementsPlumbing Requirements Electrical Hook-UpInitial SET-UP Centrate Machines will Yield only 76 OZAuto Sweetener SET-UP Adjusting Brew Volumes Operating Controls CleaningAuto Sweetener Cleaning TEA Brewing Troubleshooting Problem Probable Cause RemedyProbable Cause TroubleshootingProblem RemedySweetener is not working Sweetener box is empty Drip-out time too long Funnel TipTicles clogging the drip-out tip Sure it is not out of productSyphon System Lime Build-up Brew TimerDripping from sprayhead Beverage overflows dispenser Brew Solenoid ValveProblem Probable Cause Remedy Service Component AccessBrew Solenoid Valve ServiceTest Procedures Disconnect the brewer from the power source Solenoid valveDigital Brew Timer If voltage is as described, proceed to #7Service Digital Brew Timer Digital Timer WiringControl Thermostat Control ThermostatRemove the blue/black wire from the limit ther- mostat Limit ThermostatSwitch terminals ON/OFF SwitchRefer to when reconnecting the wires Location On the switch terminalStart Switch Start SwitchUNSWEET/OFF/SWEET Switch Sweetner Option Sweetner Solenoid Valve Sweetner Solenoid ValveTank Heater Volts AC Wire Single Phase Volts ACSchematic 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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