SERVICE (cont.)

If continuity is present as described, reconnect the

 

BREW TIMER (ICED TEA - EARLY MODELS)

wires to terminals TL3, TL4, & TL5 of the timer board

 

and proceed to #5.

 

If continuity is not present as described, refer to the

 

Wiring Diagram and check the wiring harness.

5. With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the ICED/OFF/HOT switch is in the “ICED” 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-

 

 

OLD STYLE

 

 

ing properly. Adjust the timer dial as required.

 

 

 

 

 

 

P1391.60

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIG. 10 ICED TEA BREW TIMER

 

Removal and Replacement:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Location:

 

 

1. Remove all wires from the iced tea brew timer.

The iced tea brew timer is located in the hood on

2. Remove the circuit board and dial plate from the

the right side. It consists of the dial plate and circuit

 

brackets.

 

 

 

 

board.

 

 

3. Install the new timer circuit board as described in

Test Procedure:

 

 

 

Late Model Timer section on the following pages.

 

 

4. Refer to Fig. 13 when reconnecting the wires.

1. Disconnect the brewer from the power source.

5. Install the Timer Setting Decal, provided with the

2. Remove the wires from terminals TL3, TL4, & TL5

 

timer replacement kit, on the bottom of the hood

of the iced tea timer and rotate the dial fully coun-

 

cover.

 

 

 

 

terclockwise.

 

 

6. Adjust the timer as required. See Late Model Timer

2. With a voltmeter, check the voltage across termi-

 

Section on the following pages.

 

 

 

 

nals TL1 and TL2 when the ICED/OFF/HOT switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is in the “ICED” position. Connect the brewer to

 

 

 

 

 

 

 

WHI to Power Cord (120V Models)

 

 

 

 

 

 

 

 

 

the power source. The indication must be 120

 

 

 

 

 

 

 

or WHI to Terminal Block 120/208V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Models)

 

 

 

 

volts ac for two wire 120 volt models and three

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

wire 120/208 volt models.

 

 

 

 

 

 

 

 

 

 

WHI/RED to Hot Tea Brew Solenoid

 

 

 

 

 

 

 

 

 

 

 

 

3. Disconnect the brewer from the power source.

 

 

 

 

 

 

 

 

WHI/RED to ICED/OFF/HOT Switch

 

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

 

ORN to Start Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

WHI/BLU to Iced Tea

 

 

 

 

ing Diagram and check the wiring harness.

 

 

 

Brew Solenoid

 

 

 

 

 

 

 

YEL to Start Switch

 

 

 

 

4. Check for continuity across the orange and yel-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

low wires when the start switch is held in the lower

 

OLD STYLE

 

 

 

 

position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P1365.85

 

 

 

 

FIG. 11 ICED TEA BREW TIMER TERMINALS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 20

28201

081500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 19 Page 21
Page 20
Image 20
Bunn TNTF-3 service manual Brew Timer Iced TEA Early Models
Page 19 Page 21

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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