Bunn CDS-3 Remove the control board, Instal the new control board using the four #6-32 keps nuts

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SERVICE (cont.)

CONTROL BOARD and LEVEL PROBE (cont.)

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove the two plugs (J1 and J7) from the main wiring harness, the potentiometer plug (J3), the photo transistor plug (J6), and the photo LED plug (J2) from the control board.

3.Remove the four #6-32 keps nuts securing the con- trol board to the hopper motor mounting panel.

4.Remove the control board.

5.Remove the four spacers from the old control board and install them into the new control board.

6.Instal the new control board using the four #6-32 keps nuts.

7.Reconnect the two plugs (J1 and J7) from the main wiring harness, the potentiometer plug (J3), the photo transistor plug (J6), and the photo LED plug (J2) to the control board. Refer to Fig. 12.

J2	J6

P1905

FIG. 12 CONTROL BOARD WIRING

20	29793 061599

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Contents Powder Auto Fill Post Office BOX SPRINGFIELD, IllinoisInitial SET-UP BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices Operating Instructions Adjustments Cleaning Recommended Daily Cleaning and Maintenance TipsFault List Normal operation Powder Auto-Fill ready toDispense Door not closedTroubleshooting Problem Probable CauseProblem RemedyProblem Probable Cause Remedy Procedures. See Improper adjustment of productInstall a regulator if necessary to Product overflows CDS hopper Control Board and ProbeService Component AccessAuger Drive Components Hopper LidRetainer Clip Spacer Dust Seal Hopper BaseDisconnect the dispenser from the power source Auger Drive MotorFrother and MIXING/WHIPPER Chamber Mixing ChamberWhipper Motor Volts ac for 120 volt models Volts ac for 230 volt CE modelsInstall dispense tip into the bottom of the whipper chamber Whipper MotorControl Board and Level Probe If voltage is present as described, proceed to #9Test Procedure Low Product Detect Instal the new control board using the four #6-32 keps nuts Remove the control boardTEST/SERVICE Switch LocationMain Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresIf voltage is present as described, proceed to #6 Lamp Cord ConnectorDisconnect the lamp cord from the lamp cord con- nector Lamp HOLDER/SOCKET Assembly Lamp HOLDER/SOCKET AssemblyTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchAdjustments Pressure Regulator and Needle ValveDispense Solenoid Valve Dispense Solenoid ValveWiring Diagrams Schematic Wiring Diagram PAF BLK REDWiring Diagrams Schematic Wiring Diagram Pafa BLK

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CDS-3 specifications

The Bunn CDS-3 is a commercial coffee brewer renowned for its reliability, efficiency, and high-quality performance. Designed for busy environments such as cafés, restaurants, and convenience stores, it offers the perfect balance of capacity and functionality, making it ideal for high-demand situations.

One of the standout features of the Bunn CDS-3 is its ability to brew up to 3.8 gallons of coffee per hour. This impressive capacity meets the needs of busy establishments where a constant supply of fresh coffee is crucial. The brewer’s stainless steel construction not only ensures durability but also maintains temperature, thus preserving the coffee’s rich flavor and aroma.

The CDS-3 incorporates Bunn's patented brewing technology, including the "Pour-Over" method. This feature allows for easy operation and contributes to the even extraction of coffee grounds. The machine is equipped with a pre-infusion mode that saturates coffee grounds before brewing, enhancing extraction for a fuller, more complex flavor profile.

Temperature control is another vital characteristic of the Bunn CDS-3. It maintains the water temperature between 195°F to 205°F, the ideal range for optimal coffee brewing. The brewer’s internals are designed for rapid heating, ensuring that the water reaches the desired temperature quickly and consistently, which is essential for high-quality coffee production.

In terms of usability, the Bunn CDS-3 offers an intuitive interface, allowing staff to operate it with minimal training. The front-access design not only simplifies maintenance, but also makes it easy to refill water and perform routine cleaning. Furthermore, the large capacity coffee pots ensure that the brewed coffee can be stored efficiently, minimizing waste.

Equipped with a unique spray head system, the Bunn CDS-3 ensures uniform saturation of the coffee grounds. This feature supports optimal extraction, allowing users to produce a rich and flavorful brew that keeps customers coming back for more.

In summary, the Bunn CDS-3 is a well-engineered, commercial-grade coffee brewer that excels in high-demand environments. Its robust construction, advanced brewing technology, consistent temperature control, and user-friendly design make it a favorite among coffee enthusiasts and professionals alike, affirming its reputation as a reliable and effective solution for coffee brewing needs. Whether for a bustling café or a catering service, the Bunn CDS-3 delivers a consistently great cup of coffee every time.