SERVICE (cont.)

DOOR SWITCH

P1934

FIG. 28 DOOR SWITCH

Location:

The door switch is located on the right side panel under the housing top cover.

Test Procedures:

1.Disconnect the dispenser from the power source.

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

3.Check continuity between pins 8 & 9 on the wiring harness using an ohmmeter. Continuity must be present when the door is closed. Continuity must not be present when the door is open.

4.Reconnect the twelve pin connector to the control board.

5.Gain access to the door switch using steps listed in Removal and Replacement.

6.Disconnect the wires from the door switch.

7.Check continuity between the N.O. and COM. ter- minals of the switch using an ohmmeter. Continuity must be present when the actuator is engaged. Continuity must not be present when the actuator is released.

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

If continuity is not present s described, replace the door switch.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove the hopper assembly from the dispenser.

3.Remove the dispenser from the CDS machine and place it on a flat work surface.

4.Disconnect the door lamp cord from the lamp con- nector.

5.Remove the two #8-32 screws securing the door hinge to the dispenser housing.

6.Carefully pull the door forward until the door support arms come completely out of the dispenser housing and set aside.

7.Remove the six #8-32 truss head screws securing the rear cover to the dispenser housing.

8.Remove the six #8-32 round head screws securing the front of the housing to the side panels.

9.Remove the six #8-32 truss head screws securing the back of the housing to the side panels.

10.Carefully lift and spread the housing to remove it from the rest of the dispenser.

11.Remove the door switch actuator from the nylon standoff.

12.Noting the orientation of the door switch, remove the two #6-32 screws and the nylon standoff securing the switch mounting bracket to the dispenser housing. Remove the switch.

13.Attach the new door switch taking care to orient the switch correctly in the mounting bracket and secure in place with two #6-32 screws and nylon standoff.

14.Reconnect the wires to the door switch. Refer to Fig. 29.

15.Install the door switch actuator orienting the notched side against the right side housing panel. Refer to Fig. 28.

16.Reassemble the dispenser top housing, rear panel, and door assembly to the dispenser.

 

ORA to Control

 

Board (J1-9)

 

GRN to Control

 

Board (J1-8)

 

P1908

 

FIG. 29 DOOR SWITCH TERMINALS

30

29793 061599

 

Page 29 Page 31
Page 30
Image 30
Bunn CDS-3 manual Door Switch
Page 29 Page 31

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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