Bunn TWF service manual Brew Solenoid Valve Iced TEA

Page 16

SERVICE (cont.)

If continuity is not present as described, replace the

BREW SOLENOID VALVE (ICED TEA)

solenoid valve.

 

 

 

 

6.

Check the iced tea solenoid valve for coil action.

 

 

 

Connect the brewer to the power source. With TEA/

 

 

 

OFF/COFFEE switch in the "TEA" position press

 

 

 

the START switch and listen carefully in the vicin-

 

 

 

ity of the solenoid valve for a "clicking" sound as

 

 

 

the coil magnet attracts.

 

 

7.

Disconnect the brewer from the power source.

 

 

If the sound is heard as described and water will not

 

 

pass through the solenoid valve, there may be a block-

 

 

age in the water line before the solenoid valve or, the

 

 

solenoid valve may require inspection for wear, and

 

 

removal of waterborne particles.

 

 

If the sound is not heard as described, replace the

 

 

solenoid valve.

 

P2198.50

Removal and Replacement:

 

 

 

 

FIG. 4 ICED TEA BREW SOLENOID VALVE

1.

Remove all wires from solenoid valves.

Location:

2.

Turn off the water supply to the brewer.

 

Viewing the brewer from the rear, the iced tea brew

3.

Disconnect the water lines to and from the sole-

solenoid valve is mounted in the center of the mount-

 

noid valves.

ing bracket.

4.

Remove the two #8-32 keps nuts holding the

 

 

 

mounting bracket to the brewer base.

Test Procedures:

5.

Lift out the bracket.

1. Disconnect the brewer from the power source.

6.

Remove the two #10-32 slotted-head screws hold-

2. Disconnect the white/violet and white/blue wires

 

ing the iced tea brew solenoid valve to the mount-

 

from the iced tea brew solenoid valve. With the

 

ing bracket.

 

TEA/OFF/COFFEE switch in the "TEA" position press

7.

Securely install the new iced tea brew solenoid

 

the START switch.

 

valve to the mounting bracket.

3.

With a voltmeter, check the voltage across the

8.

Attach the mounting bracket to the brewer base.

 

white/violet and white/blue wires. Connect the

9.

Securely fasten the water lines to and from the

 

brewer to the power source. The indication must

 

solenoid valves.

 

be 120 volts ac for two wire 120 volt models and

10.

Refer to Fig. 5 when reconnecting the wires.

 

three wire 120/208 volt models.

 

 

4. Disconnect the brewer from the power source.

 

 

If voltage is present as described, proceed to #5

WHI/BLU to Dilution

Solenoid

If voltage is not present as described, refer to Wiring

WHI/VIO to Dilution

Diagrams and check brewer wiring harness.

Solenoid

 

5. Check for continuity across the iced tea brew so-

HOT COFFEE

lenoid valve coil terminals.

BREW SOLENOID

ICED TEA BREW

 

 

SOLENOID

If continuity is present as described, reconnect the

DILUTION

white/violet and white/blue wires from the iced tea

SOLENOID

brew timer.

FIG.5 SOLENOID VALVE TERMINALS P1364

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10510 081599

 

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Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty ContentsIntroduction User Notices #00656.0000 #03408.0000 #00831.0000 #02822.0000 #03409.0000Plumbing Requirements Electrical RequirementsElectrical Hook-Up Initial SET-UP Adjusting Brew Volumes CleaningTEA/OFF/COFFEE Switch Start SwitchOperating Controls BrewingTroubleshooting Problem Probable Cause RemedyTroubleshooting Problem Probable Cause RemedyDilution Iced Tea cycle will not Start Switch Brew Timer Iced TeaBrew Solenoid Valve Iced Tea Dilution Solenoid ValveLevel in the dispenser. 750 GPM Pointing towards brewer Spitting or excessive steaming Lime Build-upSerious leaks Drip-out time too long Funnel TipProblem RemedyWater Temperature Weak beverageFilter Type Tea or Coffee Used for proper extractionComponent Access ServiceContents Brew Solenoid Valve HOT Coffee ServiceSolenoid valve Brew Solenoid Valve Iced TEA Brew Timer HOT COFFEE- Early Models Digital Brew Timer If voltage is as described, proceed to #7Service Digital Brew Timer HOT Coffee Late Modelscont Digital Timer WiringService Brew Timer Iced TEA Early Models Iced TEA Brew Timer TerminalsService Digital Brew Timer Iced TEA Late Models Service Digital Brew Timer Iced TEA Late Modelscont Test Procedures Disconnect the brewer from the power source Control ThermostatDilution Solenoid Valve Remove the blue wire from the limit thermostat Limit ThermostatTEA/OFF/COFFEE Switch TEA/OFF/COFFEE SwitchStart Switch Start SwitchTank Heater Tank HeaterService Thermal Fuse Models W/Faucet Only Thermal FuseService Half Batch Switch Optional GRY to Iced Tea Brew Timer PNK to Iced Tea10510 081599 Ready Indicator BLU

TWF specifications

The Bunn TWF series is a versatile and high-performance coffee brewing system designed to meet the demanding needs of commercial coffee establishments. Renowned for its reliability and consistency, the Bunn TWF is engineered for high volume production while maintaining exceptional quality in every cup.

One of the main features of the Bunn TWF is its dual-voltage capability, which makes it adaptable to various electrical systems, ensuring that businesses can use it in different locations with ease. It is compatible with both 120V and 220V outlets, providing flexibility for commercial environments.

The TWF employs Bunn's innovative brewing technology, which includes a patented digital pulse brew feature. This system optimizes the extraction process by controlling the flow rate and brewing time, enhancing the flavor profile of the coffee and ensuring that each batch is rich and full-bodied. The ThermoFresh technology allows for excellent thermal retention, ensuring that the coffee remains hot and fresh for extended periods without a heated plate that can alter the taste.

Another significant characteristic of the Bunn TWF is its brewing capacity. The machine can brew up to 16.3 gallons of coffee per hour, making it an ideal choice for busy cafes, restaurants, and catering services. The large capacity also translates to less downtime, enabling staff to serve customers more efficiently.

The Bunn TWF is equipped with a user-friendly control interface, featuring intuitive buttons and an easy-to-read display. This allows for precise programming and brewing options, accommodating various coffee types and recipes. Users can easily set up their preferred brewing parameters, making it convenient to replicate the same great taste repeatedly.

Moreover, the design of the Bunn TWF emphasizes durability and ease of maintenance. Constructed from high-quality materials, it can withstand the rigors of daily use in a bustling coffee shop environment. The machine is also designed for easy cleaning, with removable components that simplify upkeep and prolong its lifespan.

In conclusion, the Bunn TWF is an exceptional choice for those in the coffee business looking to elevate their brewing game. With its outstanding features, advanced technologies, and user-focused design, it stands out as a leader in commercial coffee brewing solutions. Whether for a high-traffic café or a catering operation, the Bunn TWF is engineered to deliver quality and efficiency while satisfying the most discerning coffee connoisseurs.
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