Bunn TNTF-3 service manual Brew Timer HOT TEA Early Models, HOT TEA Brew Timer

Page 17

SERVICE (cont.)

BREW TIMER (HOT TEA - EARLY MODELS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OLD STYLE

 

 

 

 

 

 

 

 

 

 

 

 

P1391.60

 

 

FIG. 6 HOT TEA BREW TIMER

Location:

 

 

 

 

 

 

 

 

 

 

 

The hot tea brew timer is located in the hood on the

left side. It consists of a dial plate and circuit board.

Test Procedure:

1.Disconnect the brewer from the power source.

2.Remove the wires from terminals TL3, TL4, & TL5 of the timer and rotate the dial fully counterclock- wise.

If continuity is not present as described, refer to the Wiring Diagram and check the wiring harness.

5.Check the voltage across terminals TL1 and TL4 with a voltmeter when the ICED/OFF/HOT switch is in the “HOT” position and the start switch is momentarily placed in the lower position. Con- nect the brewer to the power source. The indica- tion must be 120 volts ac for two wire 120 volt models and three wire 120/208 volt models for approximately twenty seconds and then return to its previous indication.

6.Disconnect the brewer from the power source.

If voltage is present as described, the timer is operat- ing properly. Adjust the timer dial as required.

If voltage is not present as described, replace the timer.

Removal and Replacement:

1.Remove all wires from the timer.

2.Remove the circuit board and dial plate from the brackets.

3.Install the new timer circuit board as described in Late Model Timer section on the following pages.

4.Refer to Fig.9 when reconnecting the wires.

5.Install the Timer Setting Decal, provided with the timer replacement kit, on the bottom of the hood cover.

6.Adjust the timer as required. See Late Model Timer Section on the following pages.

2.With a voltmeter, check the voltage across termi- nals TL1 and TL2 when the ICED/OFF/HOT switch is in the “HOT” position. Connect the brewer to the power source. The indication must be 120 volts ac for two wire 120 volt models and three wire 120/208 volt models.

3.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

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

WHI/ORN to Start Switch WHI/GRN to Hot Tea Brew Solenoid

WHI/YEL to Start Switch

WHI to Power Cord (120V Models) or WHI to Terminal Block 120/208V Models)

WHI/RED to Hot Tea Brew Solenoid WHI/RED to ICED/OFF/HOT Switch

4.Check for continuity across the white/orange and white/yellow wires when the start switch is held in the lower position.

If continuity is present as described, reconnect the wires to terminals TL3, TL4, & TL5 of the timer board and proceed to #5.

OLD STYLE

P1365.85

FIG. 7 HOT TEA BREW TIMER TERMINALS

Page 17

28201 081500

Page 16 Page 18
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Contents Telephone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction ContentsWarranty #00831.0000 #00656.0000 #03408.0000 #03409.0000 User NoticesElectrical Hook-Up Electrical RequirementsPlumbing Requirements Initial SET-UP Plumbing RequirementsInitial SET-UP Adjusting Brew VolumesICED/OFF/HOT Switch CleaningStart Switch Operating ControlsRemedy TroubleshootingProblem Probable Cause Problem TroubleshootingBrew cycles will not start Brew Timer RemedyProblem Probable Cause Remedy Probable Cause Remedy Or HOT position Water flows into tank continuously Brew TimerPosition Beverage overflows dispenser DispenserWeak beverage Filter Type Tea Sprayhead Funnel Loading Remove and clean lime off the tank heater. SeeDry tea leaves remain Funnel Brewer is making unusal noises SolenoidsContents ServiceComponent Access Solenoid valve ServiceBrew Solenoid Valve HOT TEA Brew Solenoid Valve Iced TEA HOT TEA Brew Timer Brew Timer HOT TEA Early ModelsIf voltage is as described, proceed to #7 Brew Timer HOT TEA Late ModelsDigital Timer Wiring Service Brew Timer HOT TEA Late MODELScontBrew Timer Iced TEA Early Models Iced TEA Brew Timer Brew Timer Iced TEA Late MODELScont Control Thermostat Test Procedures Disconnect the brewer from the power sourceDilution Solenoid Valve Test Procedure Disconnect the brewer from the power sourceLimit Thermostat Limit ThermostatICED/OFF/HOT Switch ICED/OFF/HOT SwitchStart Switch Start SwitchEls Tank HeaterIndication must be Thermal Fuse Service Thermal Fuse Models W/Faucet Only28201
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TNTF-3 specifications

The Bunn TNTF-3 is a high-performance coffee brewer designed for commercial use, specifically suited for busy environments such as restaurants and cafes. This machine seamlessly combines efficiency with quality, making it a popular choice for professionals who demand the best in their equipment.

One of the standout features of the Bunn TNTF-3 is its three warmer plates, which allow users to brew and store multiple batches of coffee simultaneously. This design ensures that there’s always fresh coffee ready for customers, minimizing downtime during peak service hours. Each warmer has its own independent control, providing versatility in temperature settings to accommodate different coffee types and customer preferences.

The Bunn TNTF-3 utilizes a patented SplashGard funnel that helps to keep the brewing process clean and efficient. This technology not only prevents splashes and messes but also improves user safety by protecting operators from hot water and coffee spills. The brewer’s stainless steel construction contributes to its durability, enhancing its longevity in a high-volume setting.

In terms of brewing capabilities, the TNTF-3 can prepare up to 3.8 gallons of coffee per hour, making it ideal for both small and large operations. The machine is equipped with a brew control feature that allows users to customize the strength and flavor of the coffee, ensuring that each cup meets the highest standards. Additionally, the digital timer and brew status light offer convenient monitoring at a glance.

For ease of maintenance, the Bunn TNTF-3 is designed with accessibility in mind. With removable components and straightforward cleaning procedures, operators can keep the machine in top condition without significant downtime. The brewer also features a low-water shut-off system, which helps to protect the unit from damage due to insufficient water levels.

Overall, the Bunn TNTF-3 embodies a blend of innovative technology, practical design, and optimal performance, making it a powerful tool for coffee professionals. Whether it be for daily service or special events, the Bunn TNTF-3 stands out as a reliable coffee brewing solution that consistently delivers rich, flavorful coffee with every batch. Its combination of speed, safety, and quality assurance solidifies its status as a preferred choice in commercial settings.
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