Bunn JDF-4SB Cabinet Fan all Models, Remove the four screws attaching the fan and cover assembly

Page 16

SERVICE (CONT.)

Cabinet Fan (all Models)

 

JDF-2S shown

FIG. 5 CABINET FAN

P1684.40

 

Location:

 

The cabinet fan is located inside the dispenser cabinet mounted in the center behind the fan guard cover.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Remove the four screws attaching the fan and cover assembly.

3.Gently pull the cover forward and disconnect the 2-pin connector from the main wiring harness.

4.Check for continuity between the two wires on the

fan.

If continuity is present as described, the fan is operat- ing properly.

If continuity is not present as described, replace the fan.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove the four screws attaching the fan and cover assembly.

3.Gently pull the cover forward and disconnect the 2-pin connector from the main wiring harness.

4.Remove the fan from the cover assembly and discard the old fan.

5.Install the new fan to the cover assembly using screws previously removed.

6.Reconnect the fan to the 2-pin connector on the main wiring harness.

7.Install the fan and cover assembly to the cabinet using screws previously removed.

8.Reconnect power to the dispenser.

RED

2

1

BLK

P1219

FIG. 6 CABINET FAN TERMINALS

16

49179

110613

 

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Contents JDF-4D, JDF-4SB Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Introduction Recommended Daily Cleaning Instructions Required Regular Maintenance Cold Water Circulation Problem Probable CauseRemedy Refrigeration Problem Probable Cause RemedyDispenser Locked Out When dispensing. If yes, replace ContinuityEd replace relay Check for kinked flex lineConcentrate only Water onlyNect fittings TrayWater pressure greater than 100psiPump tubing Inspect, clean, or replace tubing Age Adapter assemblyUnit is not working Replace control boardService Component AccessServicecont Access Panels Access PanelsServicecont Dispense Platform Removal Dispense Platform RemovalService Test ProcedureBallast JDF-2S,4S LocationRemove the four screws attaching the fan and cover assembly Cabinet Fan all ModelsLG Compressor JDF-2S,4S,4D LocationCompressor Design Pressures High 335 Low 88 psiGD Compressor JDF-2S,4S,4D CompressorDisconnect and remove the transformer Compressor JDF-4SB Compressor ThermalBLU/BLK Compressor Switch all Models Compressor SwitchCondenser Fan all Models Condenser FANTest Procedure Power Supply Circuitry Control Board, Main all ModelsPortion Control Board JDF-2S,4S With a voltmeter, back probe check the voltageSource. The indication must be 24 volts ac To the transformer See TransformerPush Button Control Board JDF-4D Push Button Control BoardPortion Control Board JDF-4D Circulation Pump all Models With a voltmeterDisconnect the two black wires from the switch Dispense Platform Switch all ModelsReturn power to the dispenser Dispense Pump all Models except JDF-4D Dispense PumpReconnect the two wires to the motor as shown in Fig Dispense Motor all ModelsDispense Valve all Models Dispense ValveDispense Switches JDF-2S, JDF-4S Dispense SwitchesCold Water Dispense Switch JDF-4S only Cold Water Dispense SwitchDispense Membrane Switch all Models LocationMembrane Switch EMI Filter all Models EMI FilterLamps, Holders and Ballasts Early Models Lamps & HoldersLED Lamps JDF-2S, JDF-4S Disconnect power from the dispenserLED regulator board Rectifier JDF-2S, JDF-4S RectifierRelay all Models Refer to to reconnect the wiresVolts ac for 120 volt models Volts ac for 230 volt models Resistor all 230V Models ResistorSolenoid Cold Water JDF-4S only If voltage is present as described, proceed to #5Solenoid Inlet all Models 120V 1.2 kΩ 230V 3.84 kΩTemperature Probe all Models Temp Resistance Voltage32 F 31.2k 34k Ω 77 F 8k 10.2k Ω32 F 5k Ω Temperature Sensor all Models77 F 350 Ω Transformer all Models Transformer TerminalsTransformer Lited Doors JDF-2S, JDF-4S Compressor Relay Q25 Water Q27Water Q28 Water Q7Diagram for JDF-2S LED Lited Doors Schematic Wiring Schematic Wiring Diagram JDF-4S Schematic Wiring Diagram JDF Schematic Wiring Diagram JDF-4D Schematic Wiring Diagram JDF-4D Electrical Schematic Diagram
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Manual 28 pages 48.61 Kb Manual 28 pages 35.87 Kb Manual 31 pages 40.19 Kb

JDF-4D, JDF-4SB, JDF-4S specifications

The Bunn JDF-4S is a high-performance commercial coffee brewer designed to meet the needs of busy coffee shops, restaurants, and other establishments requiring a reliable and efficient coffee brewing solution. This versatile machine boasts an array of advanced features and technologies, making it a prominent choice among professionals in the coffee industry.

One of the most notable features of the Bunn JDF-4S is its ability to brew up to 4 gallons of coffee per hour, ensuring that establishments can keep pace with high-demand environments. This capacity makes it an ideal choice for venues that experience peak periods of coffee consumption, minimizing wait times for customers. The machine is designed with a multiple-brew option, allowing users to select various brew methods, which can cater to diverse customer preferences.

The JDF-4S incorporates Bunn’s patented brewing technology, which utilizes a precision-controlled process to ensure optimal flavor extraction. The brewed coffee is delivered at an ideal temperature, typically between 195°F and 205°F, promoting maximum taste and aroma. The machine also features a programmable digital controller that enables users to set specific brew times and adjust water temperature settings to achieve consistent results.

Another significant characteristic of the Bunn JDF-4S is its durability and ease of use. Constructed with high-quality materials, the machine is built to withstand the rigors of daily operation. The user-friendly interface features a simple touchpad design for easy navigation and programming. Additionally, the machine includes a built-in diagnostics program, helping users quickly identify and troubleshoot potential issues, thereby minimizing downtime.

The JDF-4S also offers flexible brewing options, including iced coffee brewing, enhancing its versatility. It is compatible with Bunn’s extensive range of coffee and tea dispensers, allowing businesses to expand their beverage offerings effortlessly. Furthermore, the unit features an easy-access water reservoir for quick refilling and reduced wait times during busy service periods.

In terms of maintenance, the Bunn JDF-4S is designed with user convenience in mind. The machine includes a rinse and clean cycle to ensure optimal hygiene and coffee quality. Integrated clean alerts guide users through the cleaning process, promoting regular upkeep and ensuring the longevity of the brewer.

In summary, the Bunn JDF-4S represents a cutting-edge solution for coffee brewing that prioritizes performance, versatility, and ease of use. With its advanced brewing technology, user-friendly features, and robust construction, it offers an exceptional choice for businesses seeking to serve high-quality coffee efficiently.
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