Bunn CDS-3, CDS-2 service manual Auger Drive Motor, Diagrams and check wiring harness

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SERVICE (cont.)

AUGER DRIVE MOTOR

P1922

FIG. 4 AUGER MOTOR

Location:

The auger motor is located on the right rear of the motor assembly mounting panel.

Removal and Replacement:

1.Remove hopper assembly and set aside for reas- sembly.

2.Remove six #8-32 screws securing the rear cover and remove the rear cover.

3.Remove the four #8-32 screws located inside the dispenser housing on the lower right front of the auger motor mounting panel, securing the auger motor mounting bracket and auger motor to the

rear of the auger motor mounting panel.

4Disconnect the wires from the auger drive motor.

5.Remove the auger motor mounting bracket, auger motor and dust seal as an assembly.

6.Remove the dust seal from the auger motor and discard the motor.

7.Install dust seal on the new auger motor shaft and align the notch in the seal with the motor casting.

8.Connect the wires from the auger motor to the terminals in the main wiring harness. See Fig. 5.

9.Using four #8-32 screws, install the auger motor, dust seal and mounting bracket to the rear of the auger motor mounting panel.

10.Install the hopper assembly.

11.Install the rear cover with six #8-32 screws.

Test procedures:

1. Disconnect the dispenser from the power source.

2.Check the voltage across the positive (red wire) terminal and the negative (black wire) terminal on

the auger motor with a voltmeter. With the dis- penser door open and the product level in the CDS hopper lower than the probe, press and hold the SERVICE switch. Connect the dispenser to the power supply. The indication must be 4.0 to 26.5 volts dc.

If voltage is present as described, the auger motor

 

drive is operating properly. If auger does not turn,

 

replace the auger motor.

 

If voltage is not present as described, refer to wiring

 

diagrams and check wiring harness.

RED to Control

 

Board (J1-1)

 

BLK to GRN Wire

 

Main Harness to

 

Control Board (J1-7)

 

P1902

 

FIG. 5 AUGER MOTOR TERMINALS

14

29793 061599

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217Initial SET-UP BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices Operating Instructions Adjustments Removing and cleaning the whipper chamber once a day CleaningRecommended Daily Cleaning and Maintenance Tips Thorough cleaning of the hopper once a weekDispense Fault ListNormal operation Powder Auto-Fill ready to Door not closedTroubleshooting Problem Probable CauseRemedy TroubleshootingProblem CDS product tastes watery or sugaryProblem Probable Cause Remedy Install a regulator if necessary to Procedures. SeeImproper adjustment of product Product overflows CDS hopper Control Board and ProbeContents ServiceComponent Access Retainer Clip Auger Drive ComponentsHopper Lid Spacer Dust Seal Hopper BaseDiagrams and check wiring harness 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 MotorIf voltage is present as described, proceed to #9 Control Board and Level ProbeIf voltage is present as described, proceed to #5 Test Procedure Low Product Detect Instal the new control board using the four #6-32 keps nuts Remove the control boardLocation TEST/SERVICE SwitchDisconnect the wires from the switch terminals Main Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresRemove new nut and washer from new lamp cord connector Lamp Cord ConnectorDisconnect the lamp cord from the lamp cord connector Lamp HOLDER/SOCKET Assembly Close the dispenser doorTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchAdjustments Pressure Regulator and Needle ValveDispense Solenoid Valve Dispense Solenoid Valve LocationWiring Diagrams Schematic Wiring Diagram PAFSchematic Wiring Diagram Pafa
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CDS-2, 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.
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