Bunn CDS-2, CDS-3 service manual Hopper Switch

Page 29

SERVICE (cont.)

HOPPER SWITCH

P1933

FIG. 26 HOPPER SWITCH

Location:

The hopper switch is located under the hopper support panel.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Open the dispenser door and remove the hopper.

3.Manually engage and release the hopper switch actuator. The actuator must operate smoothly with- out binding at either end of its travel and an audible click must be detected near the mid point of travel.

If the actuator operates as described, proceed to #4. If the actuator does not operate as described, loosen the hopper switch mounting screws, realign the switch, and repeat the process. If the audible click cannot be detected, proceed to #4.

4.Disconnect the twelve pin connector (J1) from the control board.

5.Check continuity between pins 8 & 10 on the harness using an ohmmeter. Continuity must be present when the hopper is correctly installed. Continuity must not be present when the hopper is removed.

6.Reconnect the twelve pin connector (J1) to the control board.

If continuity is present as described, the hopper switch is operating properly.

If continuity is not present as described, proceed to #7.

7.Disconnect the wires from the hopper switch.

8.Check continuity between the N.O. and COM. termi- nals of the hopper switch using an ohmmeter. Continuity must be present when the actuator is engaged. Continuity must not be present when actuator is released.

If continuity is present as described, refer to wiring diagram and check the dispenser wiring harness.

If continuity is not present as described, replace the hopper switch.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Open the dispenser door and remove the hopper.

3.Remove the four #8-32 screws securing the hopper support panel.

4.Carefully lift the hopper support panel, remove the wires from the hopper switch, and remove the hopper support panel.

5.Noting the orientation of the switch, remove the two #4-40 screws, lockwashers and nuts securing the switch to the panel.

6.Attach the new switch to the panel taking care to orient it properly and secure with two #4-40 screws, lockwashers and nuts.

7.Manually engage and release the hopper switch actuator. The actuator must operate smoothly with- out binding at either end of its travel. If the actuator operates as described, proceed to #8. If the actua- tor does not operate as described, loosen the two screws and realign the switch and repeat the pro- cess.

8.Refer to Fig. 27 and reconnect the wires.

9.Install the hopper support panel and secure with four #8-32 screws.

GRN to Control Boad (J1-8)

RED/BLK to Control Board (J1-10)

P1904

 

FIG. 27 HOPPER SWITCH TERMINALS

29

29793 061599

 

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisInitial SET-UP BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices Operating Instructions Adjustments Recommended Daily Cleaning and Maintenance Tips CleaningRemoving and cleaning the whipper chamber once a day Thorough cleaning of the hopper once a weekNormal operation Powder Auto-Fill ready to Fault ListDispense Door not closedProblem Probable Cause TroubleshootingProblem TroubleshootingRemedy CDS product tastes watery or sugaryProblem Probable Cause Remedy Improper adjustment of product Procedures. SeeInstall a regulator if necessary to Product overflows CDS hopper Control Board and ProbeContents ServiceComponent Access Hopper Lid Auger Drive ComponentsRetainer Clip Spacer Dust Seal Hopper BaseAuger Drive Motor Diagrams and check wiring harnessMixing Chamber Frother and MIXING/WHIPPER ChamberVolts ac for 120 volt models Volts ac for 230 volt CE models Whipper MotorWhipper Motor Install dispense tip into the bottom of the whipper chamberIf 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 Remove the control board Instal the new control board using the four #6-32 keps nutsLocation TEST/SERVICE SwitchDisconnect the wires from the switch terminals Main Power ON/OFF Switch Main Power ON/OFF SwitchRefer to when reconnecting the wires Lamp Cord AssemblyRemove new nut and washer from new lamp cord connector Lamp Cord ConnectorDisconnect the lamp cord from the lamp cord connector Close the dispenser door Lamp HOLDER/SOCKET AssemblyTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchPressure Regulator and Needle Valve AdjustmentsDispense Solenoid Valve Location Dispense Solenoid ValveSchematic Wiring Diagram PAF Wiring DiagramsSchematic 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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