Bunn System III Operating Controls, Coffee Brewing, Cleaning, Brew Selector Switch, Start Switch

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ADJUSTING BREW VOLUMES (cont.)

To decrease a batch size. Press and release the START or BREW switch once for every two-second interval to be removed from the total brew time period; then immediately press and hold down the START or BREW switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the desired volume has been achieved.

2.Setting batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. Press and hold the START or BREW switch until three distinct clicks are heard, and then release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). View the level of the liquid being

dispensed. When the desired level is reached, turn the ON/OFF switch to "OFF" (lower). The brewer remem- bers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.

NOTE: When brewing coffee, batch volumes will decrease due to absorption by the coffee grounds.

3.Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times once programmed, you can set the SET/LOCK switch to the "LOCK" position. This will prevent any program- ming to be done until switch is once again placed in the "SET" position.

OPERATING CONTROLS

BREW SELECTOR SWITCH

Placing the switch in the 1Gal, 1-1/2Gal or 2Gal position selects the amount of coffee to be brewed in subsequent brew cycles. Repositioning this switch after a brew cycle has been initiated does not change the brew batch in progress.

ON/0FF (Warmer) SWITCH

Placing the switch in the unlighted lower position cuts power to the brew station warmer and stops brewing. Stopping a brew cycle after it has been started will not stop the flow of water from the funnel. Placing the switch in the lighted upper position supplies power to the brew station warmer and enables the brew circuit.

START SWITCH

Momentarily pressing and releasing this switch starts a brew cycle when the ON/OFF switch is in the lighted upper position.

NOTE – The ON/OFF switch must be in the lighted upper position to initiate and complete a brew cycle.

COFFEE BREWING

1.Select the desired batch size.

2.Insert a BUNN® filter into the funnel.

3.Pour the proper amount of fresh coffee into the filter and level the bed of grounds by gently shaking.

4.Slide the funnel into the funnel rails.

5.Place an empty server under the funnel.

6Place the ON/OFF switch in the lighted upper position. Momentarily press and release the Start switch.

7. When brewing is complete, simply discard the grounds and filter.

CLEANING

1.The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment.

2.Check and clean the sprayhead. The sprayhead holes must always remain open.

NOTE – In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer and takes less than a minute.

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Contents Bunn Warranty User Notices 20201.5600 00831.0000 00656.0000 03408.0000 03409.0000Models with electro/mechanical thermostats Models with digital brewer control assemblyElectrical Requirements Plumbing RequirementsAdjusting Brew Volumes Initial SET-UPElectro/mechanical brewers Start Switch CleaningBrew Selector Switch Operating ControlsTroubleshooting Problem Probable Cause RemedyBrew cycle will not start Troubleshooting ProblemOverflow protection switch Digital Brewer Control Assem- bly DBCTroubleshooting Problem Probable Cause Remedy Sprayhead or airvent Mechanical Triac assembly DBCWarmer element StepTimer adjustment Time adjustment ElectroDBC volume adjustment Procedures. See page 34 orTroubleshooting Problem Cannot access the DBC Digital brewer control DBC display is blank Digital brewer controlService Component AccessContents Service Bypass ValveService LocationBrew Selector Switch ELECTRO/MECHANICALContactor Assembly ELECTRO/MECHANICAL only Gently remove the capillary bulb and grommet from the tankService Contactor Assembly ELECTRO/MECHANICAL only Contactor Assembly TerminalsTest Procedures Disconnect the brewer from the power source OnlyDispense Valve ElectromechanicalDigital Brewer Control Board and Display DBC TION, Entry and DescriptionService Digital Brewer Control Board and Display DBC TRIAC/HEAT Sink Assembly DBC only TRIAC/HEAT SinkP2231.30 Terminals Limit Thermostat Limit ThermostatThree wire 120/240 volt models Service ON/OFF Warmer SwitchBlack wire from the center terminal ModelsOverflow Protection Switch Test Procedure Disconnect the brewer from the power sourceService Solenoid Valve Refill Refill Solenoid ValveRefill Solenoid Terminals Start Switch Tank Heater LocationTimer ELECTRO/MECHANICAL Onlyearly Models Digital Timer ELECTRO/MECHANICAL only Late Models If voltage is as described, proceed to #7Timer Setting Digital Timer WiringWarmer Element Lower 27362 092900 Lower

System III specifications

The Bunn System III is a versatile and efficient commercial brewing system designed for high-demand environments such as cafés, restaurants, and catering operations. Renowned for its reliability and performance, the System III combines advanced brewing technology with user-friendly features to deliver exceptional coffee consistently.

One of the key features of the Bunn System III is its innovative brewing technology, which employs a unique infuser system. This design allows for optimal extraction of coffee flavors by ensuring that hot water is evenly distributed over the coffee grounds, maximizing flavor and ensuring a rich, balanced cup every time. The brewing system can brew up to 3.8 gallons of coffee per hour, making it an ideal choice for busy establishments.

The System III is equipped with an impressive built-in water heater that maintains a temperature of approximately 200°F, which is crucial for brewing coffee at the ideal temperature. This consistent temperature control minimizes the risk of under-extraction or over-extraction, resulting in better-tasting coffee. Additionally, the hot water faucet feature allows users to brew tea or instant beverages on demand, further enhancing the system's versatility.

Another characteristic that sets the Bunn System III apart is its user-friendly interface. The system is designed with intuitive controls, allowing baristas and kitchen staff to operate it with minimal training. The easy-to-read digital display provides critical information such as brew time and water temperature, ensuring that users can monitor the brewing process closely.

Durability is a hallmark of the Bunn System III. Constructed from high-quality materials, this brewing system is designed to withstand the rigors of commercial use. Its robust design ensures longevity and minimizes the need for frequent maintenance, making it a cost-effective choice for businesses.

The Bunn System III also features a large-capacity brew basket, capable of holding ample coffee grounds for high-volume brewing. This basket, combined with the system's efficient design, allows for quick and easy brewing, making it perfect for high traffic situations.

In conclusion, the Bunn System III coffee brewing system is a top choice for commercial coffee operations. Its advanced brewing technology, consistent temperature control, user-friendly features, and durable construction combine to create an exceptional brewing experience. Whether in a café, restaurant, or catering service, the Bunn System III stands out as an indispensable tool for delivering high-quality coffee efficiently.
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