Bunn CDS-3 Properly discharged before proceeding, Compressor Start Relay Refer to FIG, Lay

Page 28

SERVICE (cont.)

 

 

 

 

Test Procedures:

COMPRESSOR & COMPONENTS (CDS-2)

 

 

WARNING: The compressor start capacitor must be

 

 

properly discharged before proceeding.

 

 

 

 

 

 

 

 

 

 

 

 

Compressor Start Relay: Refer to FIG. 12

 

 

 

 

 

 

1. Disconnect the dispenser from the power source.

 

 

 

 

 

 

2. Remove compressor terminal cover retainer (6)

 

 

 

 

 

 

and compressor terminal cover (5).

 

 

 

 

 

 

3. Disconnect the black wire from the thermal over-

 

R2

 

 

 

 

load protector (3) and white/black wire from the

 

2

 

 

 

 

 

 

 

 

 

 

 

compressor start relay (1).

 

 

 

 

 

 

4. With a voltmeter, check voltage across the black

 

 

 

 

 

 

wire and the white/black wire and the ON/OFF

 

 

 

 

 

 

switch in the “ON” position, DAY/NIGHT switch in

FIG. 11 COMPRESSOR ASSY

 

P1342

 

the “DAY” position and the ICE/OFF/NO ICE switch

 

 

 

in the “ICE” position. Connect the dispenser to the

Location:

 

 

 

 

 

 

 

 

 

 

power source. The indication must be 120 volts ac

The compressor assy is located inside the front

 

for two wire 120 volt models or 230 volts ac for

of the dispenser chassis.

 

 

 

 

two wire 230 volt models.

 

 

 

 

 

 

5. Disconnect the dispenser from the power source.

1

4

 

 

 

 

If voltage is present as described, proceed to #6.

 

 

 

 

 

 

If voltage is not present as described, refer to the Wiring

 

 

 

 

 

 

Diagram and check the dispenser wiring harness.

 

 

 

 

 

 

6. Disconnect the two black wires from the compres-

 

 

 

 

 

 

sor start capacitor.

 

 

 

 

 

 

7. Remove relay from the compressor.

 

3

2

5

6

 

8. Check for continuity across the upper left terminal

R

 

and the right pin socket on the rear of the relay.

22

 

 

 

 

 

 

 

120V COMPRESSORS

 

 

 

 

If continuity is present as described, the compressor

 

 

 

 

 

start relay is operating properly.

 

 

 

 

 

 

4

 

 

 

 

 

If continuity is not present as described, replace re-

3

 

 

 

 

 

lay.

1

 

 

 

 

 

Compressor:

 

 

 

 

 

 

 

 

 

 

 

 

1. With the compressor start relay (1) removed, dis-

 

 

 

 

 

 

connect the black wire from the compressor.

 

 

 

 

 

 

2. Check for continuity across the terminal on the

R22

 

5

6

7

 

compressor and the left pin on the compressor.

 

 

 

 

 

If continuity is present as described, the electrical part

 

 

 

 

 

 

 

230V COMPRESSORS

 

 

P1344

 

of the compressor is operating properly.

 

 

 

 

If continuity is not present as described, replace the

FIG. 12 COMPRESSOR ELECTRICAL COMPONENTS

 

1. Compressor Start Relay

 

 

 

 

compressor.

 

 

 

 

Thermal Overload Protector:

2. Overload Protector Retainer

 

 

 

 

3. Thermal Overload Protector

 

 

 

 

1. Check for continuity across the terminals on the

4. Compressor Start Capacitor

 

 

 

 

thermal overload protector (3).

5. Compressor Terminal Cover

 

 

 

 

If continuity is present as described, the thermal over-

6. Compressor Terminal Cover Retainer

 

 

load protector is operating properly.

7. Compressor Run Capacitor

 

 

 

 

If continuity is not present as described, replace the

 

 

 

 

 

 

 

 

 

 

 

28

thermal overload protector.

 

 

 

 

 

27646 122200

 

 

 

 

 

 

Page 27 Page 29
Image 28
Page 27 Page 29
Contents CDS-2 CDS-3 Post Office BOX SPRINGFIELD, IllinoisContents Introduction12559.0003 00986.0002 User Notices28720.0000 27443.0000 27664.0000 User NoticesCDSA-2 Only Site preparation Electrical RequirementsInitial setup Hand Each cooling drum sealAs shown Place Inside of each auger shaftApproximately Operating Controls DAY/NIGHT Timer Setting TimeSetting Night Time Mode Operating ControlsUsing the Dispenser for GRANITA-TYPE Products Using the Dispenser for Cold Liquid ProductsOther Recommendations for Your Dispenser Recommended Daily Cleaning Sugar & Alcohol products Recommended Weekly Cleaning LubricationDisassembly AssemblyLubrication Faucet HandlesAuger assembly & Disassembly Early Augers only Snap it onto the assemblyTroubleshooting Problem Probable Cause RemedyAuger Motor won’t turn Auger ON/OFF Switches Auger Motor Capacitors Refer to Service Auger MotorTime Delay Hopper Display Lights not on Circuit BreakerCompressor not running Power cord Ing procedures. SeeWith adjustment Board L.E.D.s With an extension cord. Refer toProblem Probable Cause Problem Become unusual. Auger MotorsService Component AccessAuger Motors Test ProceduresLocation Auger Motor Capacitor Auger Motor CapacitorsAuger Shaft Assembly Auger Shaft AssemblyService Auger Shaft ASSEMBLYcont Auger ON/OFF Switches Volts ac for 120 volt models Volts ac for 230 volt modelsRemove the wires from the circuit breaker Circuit BreakerDispenser chassis Two wire 230 volt models Connect the black wire from the compressorProperly discharged before proceeding Compressor Start Relay Refer to FIG120V Dispensers Refer to a and reconnect the wires Remove run capacitor and discardCompressor & Components CDS-3 Compressor Thermal P1819 Overload Protector LocationRefer to a and reconnect the wires to the compressor Disconnect the fan leads from the main wiring harnessRED from Relay T2 WHI from Relay T4 BLK from Relay T-5 Compressor Relay Terminals Contactor Electronic Control Symptoms Cooling Drum AlignmentDAY/NIGHT Switch Dispenser ON/OFF Switch Dispenser ON/OFF SwitchElectronic Control Electronic ControlUse cable ties to secure wires away from fan blades FANFuse and Fuse Holder Fuse HolderICE/OFF/NO ICE Switches ICE/OFF/NO ICE SwitchesLamp Cord Assy Lamp Cord AssyLamp Cord Connector Upper left side of the auger covers Test ProceduresLamp HOLDER/SOCKET Assembly Inside the hopper coversD./ADJUSTMENT Board E.D./ Adjustment BoardSolenoids SolenoidsTemperature Sensor Temperature SensorTorque Sensor Circuit Board Torque Sensor Circuit Board P1341 LocationTransformer Remove transformer and discardService Voltage DividerCoolant Schematic Diagram CDS-2 Coolant Schematic Diagram CDS-3 Prior to S/N CDSCDS 0019500 Up 27646 27646 Schematic Wiring Diagram for CDS-2 PAF Schematic Wiring Diagram for CDSA-2 PAF 27646 27646 27646
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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.
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