Bunn CDS-3 service manual Transformer, Remove transformer and discard

Page 49

SERVICE (cont.)

TRANSFORMER

 

FIG. 50 TRANSFORMER

P1342

 

Location:

The transformer is located inside the chassis on the upper rear side of the component bracket.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the plug from the transformer to the connector from the dispenser main wiring har- ness.

3.With a voltmeter, check the voltage across the white/red wire and the white/black wire in the dis- penser main wiring harness connector. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for 120 volt models.

b)230 volts ac for 230 volt models.

4.Disconnect the dispenser from the power source. If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the Wiring Diagram and check the dispenser main wiring harness.

5.Reconnect the plug from the transformer to the con- nector from the dispenser main wiring harness.

6.Connect the dispenser to the power source.

7.Disconnect the lamp cord from the lamp cord con- nector.

8.With a voltmeter, check the voltage across the in- side of lamp cord socket and the outside with the DAY/NIGHT switch in the “-” down position. The indication must be approximately 12.6 volts dc.

9.Disconnect the dispenser from the power source. If voltage is present as described, the transformer is operating properly.

If voltage is not present as described, replace the transformer.

Removal and Replacement:

1.Remove the four #8-32 locking screws securing the component bracket to the chassis.

2.Pull component bracket from the chassis far enough to gain access to the transformer.

3.Disconnect the connector from the dispenser main wiring harness from the plug on the transformer.

4.Remove the four #8-32 locking screws securing the transformer to the component bracket.

5.Remove transformer and discard,

6.Position new transformer on the component bracket and secure with four #8-32 locking screws.

7.Reconnect the plug on the transformer to the con- nector on the dispenser wiring harness.

8.Refer to Fig. 51 and reconnect the wires.

9.Position component bracket in the chassis and secure with four #8-32 locking screws.

FIG. 51 TRANSFORMER TERMINALS

P1329

 

49

27646 122200

 

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Contents Post Office BOX SPRINGFIELD, Illinois CDS-2 CDS-3Introduction Contents12559.0003 00986.0002 User Notices28720.0000 27443.0000 27664.0000 User NoticesCDSA-2 Only Electrical Requirements Site preparationHand Each cooling drum seal Initial setupAs shown Place Inside of each auger shaftApproximately Operating Controls Setting Time DAY/NIGHT TimerSetting Night Time Mode Operating ControlsUsing the Dispenser for Cold Liquid Products Using the Dispenser for GRANITA-TYPE ProductsOther Recommendations for Your Dispenser Recommended Daily Cleaning Sugar & Alcohol products Lubrication Recommended Weekly CleaningAssembly DisassemblyLubrication Faucet HandlesSnap it onto the assembly Auger assembly & Disassembly Early Augers onlyProblem Probable Cause Remedy TroubleshootingAuger Motor Capacitors Refer to Service Auger Motor Auger Motor won’t turn Auger ON/OFF SwitchesTime Delay Hopper Display Lights not on Circuit BreakerIng procedures. See Compressor not running Power cordWith adjustment Board L.E.D.s With an extension cord. Refer toProblem Probable Cause Become unusual. Auger Motors ProblemComponent Access ServiceAuger Motors Test ProceduresLocation Auger Motor Capacitors Auger Motor CapacitorAuger Shaft Assembly Auger Shaft AssemblyService Auger Shaft ASSEMBLYcont Volts ac for 120 volt models Volts ac for 230 volt models Auger ON/OFF SwitchesCircuit Breaker Remove the wires from the circuit breakerConnect the black wire from the compressor Dispenser chassis Two wire 230 volt modelsProperly discharged before proceeding Compressor Start Relay Refer to FIG120V Dispensers Remove run capacitor and discard Refer to a and reconnect the wiresCompressor Thermal P1819 Overload Protector Location Compressor & Components CDS-3Refer 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 Cooling Drum Alignment SymptomsDAY/NIGHT Switch Dispenser ON/OFF Switch Dispenser ON/OFF SwitchElectronic Control Electronic ControlFAN Use cable ties to secure wires away from fan bladesFuse Holder Fuse and Fuse HolderICE/OFF/NO ICE Switches ICE/OFF/NO ICE SwitchesLamp Cord Assy Lamp Cord AssyUpper left side of the auger covers Test Procedures Lamp Cord ConnectorInside the hopper covers Lamp HOLDER/SOCKET AssemblyE.D./ Adjustment Board D./ADJUSTMENT BoardSolenoids SolenoidsTemperature Sensor Temperature SensorTorque Sensor Circuit Board P1341 Location Torque Sensor Circuit BoardRemove transformer and discard TransformerVoltage Divider ServiceCoolant Schematic Diagram CDS-2 Prior to S/N CDS Coolant Schematic Diagram CDS-3CDS 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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