Bunn TWF service manual Level in the dispenser. 750 GPM Pointing towards brewer, Serious leaks

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TROUBLESHOOTING (cont.)

 

 

PROBLEM

PROBABLE CAUSE

REMEDY

Consistently high or low beverage

2. External Strainer/Flow Control

(A) Direction of flow arrow must be

level in the dispenser. (cont.)

(.750 GPM)

pointing towards brewer.

 

 

(B) Remove the strainer/flow con-

 

 

trol and check for obstructions.

 

 

Clear or replace.

Spitting or excessive steaming

1. Lime Build-up

 

CAUTION - Tank and tank compo-

 

nents should be delimed regularly

 

depending on local water condi-

 

tions. Excessive mineral build-up

 

on stainless steel surfaces can ini-

 

tiate corrosive reactions resulting

 

in serious leaks.

Inspect tank assembly for excessive lime deposits. Delime as required.

 

2.

Control Thermostat

Refer to Service - Control Thermo-

 

 

 

stat for testing procedures. See

 

 

 

page 23

Drip-out time too long

1.

Funnel Tip

The brew funnel should be cleaned

 

 

 

thoroughly before each brew cycle

 

 

 

to lessen the chance of tea leaf par-

 

 

 

ticles clogging the drip-out tip.

Dripping from sprayhead

1.

Syphon System

 

2.

Lime Build-up

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water condi- tions. Excessive mineral build-up on stainless steel surfaces can ini- tiate corrosive reactions resulting in serious leaks.

The brewer must be level or slightly lower in front to syphon properly.

Inspect the tank assembly for ex- cessive lime deposits. Delime as required.

3. Brew Solenoid Valve

Refer to Service - Brew Solenoid

A) Iced Tea

Valve (Iced Tea) for testing proce-

 

dures. See page 16

B) Hot Coffee

Refer to Service- Brew Solenoid

 

Valve (Hot Coffee) for testing pro-

 

cedures. See Page 15

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10510

071000

 

 

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Contents Telephone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction ContentsWarranty #00656.0000 #03408.0000 #00831.0000 #02822.0000 #03409.0000 User NoticesElectrical Hook-Up Electrical RequirementsPlumbing Requirements Initial SET-UP Cleaning Adjusting Brew VolumesBrewing TEA/OFF/COFFEE SwitchStart Switch Operating ControlsProblem Probable Cause Remedy TroubleshootingProblem Probable Cause Remedy TroubleshootingDilution Solenoid Valve Dilution Iced Tea cycle will not Start SwitchBrew Timer Iced Tea Brew Solenoid Valve Iced TeaDrip-out time too long Funnel Tip Level in the dispenser. 750 GPM Pointing towards brewerSpitting or excessive steaming Lime Build-up Serious leaksRemedy ProblemUsed for proper extraction Water TemperatureWeak beverage Filter Type Tea or CoffeeContents ServiceComponent Access Solenoid valve ServiceBrew Solenoid Valve HOT Coffee Brew Solenoid Valve Iced TEA Brew Timer HOT COFFEE- Early Models If voltage is as described, proceed to #7 Digital Brew TimerDigital Timer Wiring Service Digital Brew Timer HOT Coffee Late ModelscontIced TEA Brew Timer Terminals Service Brew Timer Iced TEA Early ModelsService Digital Brew Timer Iced TEA Late Models Service Digital Brew Timer Iced TEA Late Modelscont Control Thermostat Test Procedures Disconnect the brewer from the power sourceDilution Solenoid Valve Limit Thermostat Remove the blue wire from the limit thermostatTEA/OFF/COFFEE Switch TEA/OFF/COFFEE SwitchStart Switch Start SwitchTank Heater Tank HeaterThermal Fuse Service Thermal Fuse Models W/Faucet OnlyGRY to Iced Tea Brew Timer PNK to Iced Tea Service Half Batch Switch Optional10510 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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