SERVICE (cont.)

6. Disconnect the black wires from contactor termi-

 

 

CONTACTOR - ELECTRONIC CONTROL

 

nals #6 & #8 (#5 & #6, CDS-3 first type contac-

 

 

 

tor).

 

 

 

 

7. With ON/OFF switch in the “ON” position, connect

 

 

 

the dispenser to the power source and check for

 

 

 

continuity across terminals on contactor.

 

 

 

If continuity is not present as described, on CDS-3 first

 

 

type contactors, replace contactor. If continuity is not

 

 

present between terminals #6 & #8 as described on all

 

 

CDS-2 contactors and CDS-3 second type contactors,

 

 

check for continuity across terminals #2 and #4.

 

 

If continuity is present as described, disconnect the

 

 

dispenser from power source and reconnect black

 

 

wires to terminals #2 and #4, the contactor will oper-

 

 

ate properly.

 

 

 

 

If continuity is not present as described, replace the

 

 

contactor.

 

 

 

P1342

Removal and Replacement:

 

 

 

FIG. 21 CONTACTOR - ELECTRONIC CONTROL

 

 

Location:

1. Disconnect the wires from the contactor.

 

2. Remove the two #8-32 locking screws securing

 

The contactor is located inside the dispenser chas-

 

 

the contactor to the component bracket. Remove

sis on the lower outside of the component bracket.

 

 

and discard contactor.

 

 

 

 

 

 

 

Test Procedures:

3. Install the new contactor on the component bracket

1.

Disconnect the dispenser from the power

 

using two #8-32 locking screws.

 

 

source.

4.

Refer to Fig. 22 and reconnect the wires.

 

2.

Disconnect white/black wire from contactor termi-

 

Terminal #4

Terminal #0

 

 

nal #0 (terminal #2, on CDS-3 first type contactor)

 

 

 

 

WHI/BLK from Main Harness/

 

 

 

 

and brown/black from terminal #1.

 

Terminal #2

Power Cord/Compressor

 

 

 

 

3. With a voltmeter, check the voltage across the

 

 

 

 

 

white/black wire and the brown/black wire and

Terminal #6

Terminal #1

 

 

the ON/OFF switch in the “ON” position. Connect

BLK from Main

 

 

BRN/BLK from Main

 

the dispenser to the power source. The indication

Harness/Power Cord

 

 

 

Harness/Control Board

 

must be:

 

Terminal #8

 

 

 

a) 120 volts ac for 120 volt models.

 

BLK from Compressor

 

 

 

 

Harness

 

 

 

b) 230 volts ac for 230 volt models.

 

ALL CDS-2 CONTACTORS

 

4.

Disconnect the dispenser from the power

 

 

 

CDS-3 SECOND TYPE CONTACTORS

 

 

source.

 

 

 

 

 

 

 

If voltage is present as described, proceed to #5.

 

 

Terminal #2

 

If voltage is not present as described, refer to the

Terminal #1

WHI/BLK from Main Harness/

Power Cord/Compressor

Wiring Diagram and check the dispenser wiring har-

BRN/BLK from Main

 

 

ness.

Harness/Control Board

Terminal #6

 

 

 

 

5. Check for continuity across contactor terminals

 

 

BLK from Main

 

 

Harness/Power Cord

 

#0 & #1 (#1 & #2, CDS-3 first type contactor).

 

 

 

 

 

 

 

If continuity is present as described reconnect the

 

Terminal #5

 

 

white/black wire and the brown/black wire to the

 

BLK from Compressor

 

 

 

Harness

 

 

contactor and proceed to #6.

 

CDS-3 FIRST TYPE CONTACTORS

 

If continuity is not present as described, replace the

 

 

 

FIG. 22 CONTACTOR TERMINALS

P1333

contactor.

 

34

27646 122200

 

 

 

 

 

 

 

 

 

Page 34
Image 34
Bunn CDS-3 service manual Contactor Electronic Control

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.

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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.