Bunn JDF-4S service manual Priming, Operating Controls, Refrigeration Switch

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PRIMING

1.Open the dispenser door

2.Load concentrate per instructions in section titled Loading.

3.Close the dispenser door.

4.Place a large container under the appropriate dispense nozzle.

Press and hold the “Product Dispense Switch” Fig 5, until concentrate dispenses from the dispense nozzle. Note: This may take several seconds, depending on the installation and set pump speed.

OPERATING CONTROLS

Refrigeration Switch

The refrigeration switch is located on the Electrical Panel of the dispenser near the Circuit Board. This switch controls power to the water bath pump and relay contacts for the compressor and condenser fan motor.

FIG 7 Refrigeration Switch - JDF-2S

FIG 8 Refrigeration Switch - JDF-4S

Product Dispense Switch (Mechanical Switch Machines)

Pressing and holding switch will initiate product flow from the respective nozzle; releasing the switch will stop the flow.

 

P3583

P3844

FIG 9 Product Dispense Switches - JDF-2S

FIG 10 Product Dispense Switches - JDF-4S

 

8

44744 032811

 

Image 8
Contents JDF-2S JDF-4S Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents User NoticesInitial SET-UP CE RequirementsElectrical Requirements Plumbing RequirementsDoor Cover Installation Secure the door cover using 5 screws providedPlumbing Hookup Plumbing Connections JDF-2S Plumbing Connections JDF-4SInitial Fill Initial Fill Hose JDF-2S Initial Fill Hose JDF-4SLoading Initial FillFrozen Concentrates Ambient Concentrates OptionalRefrigeration Switch Product Dispense Switch Mechanical Switch MachinesPriming Operating ControlsProduct Dispense Switch Membrane Switch Machines Dispense Lockout Switch JDF-2S shownDispense Lockout Switch Program Switch JDF-2S shownPortion Control Option Mechanical Switch Machines Push and Hold Membrane Switch MachinesPortion Control Option Membrane Switch Machines Dispenser USETemperature LEDs JDF-4S Temperature LEDs JDF-2S Late ModelsCleaning & Preventive Maintenance Daily Rinse ProcedureOpen dispenser door Cleaning Monthly Clean Condenser CoilsAnnually Replace Pump Tubing Adjustment & Optional Settings Water Flow Testing and AdjustmentPump Speed Adjustment Brix %Adjustment & Optional Settings Temperature Compensated Refractometer MethodAdjustment & Optional Settings Dispenser Lockout Circuit Board LED Indicators JDF-2S Early Models Function ListLED # LED Color IlluminatesJDF-4S Troubleshooting ProblemProbable Cause RemedyTroubleshooting Compressor ON/OFF switch Dirty condenser filter or finsRefrigeration Space around machineProblem Probable Cause Remedy Concentrate only Water onlyInitial fill/setup Nect fittingsTray Water pressure greater thanProblem Probable Cause Coolant Schematic Diagram Schematic Wiring Diagram JDF-2S Schematic Wiring Diagram JDF-2SSchematic Wiring Diagram JDF-4S Schematic Wiring Diagram JDF-4SQuick Setup Guide JDF-2S and JDF-4S JDF-2S shown Shown.See Initial Fill
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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.