Bunn JDF-4S service manual Cleaning Monthly Clean Condenser Coils, Annually Replace Pump Tubing

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CLEANING (cont)

Monthly: Clean Condenser Coils

1. Use a soft bristle brush to clean the build up of dirt in the condenser.

NOTE: Some models include a removable filter that can be cleaned in warm soapy water.

Annually: Replace Pump Tubing

39690.0000

Tube Kit JDF-2S & JDF-4S

39688.0000

Tube Assembly

1.Open dispenser door.

2.Remove all product containers and place them in a refrigerated (35-40 degrees F [1.6-4.4 degrees C]) envi- ronment. Disconnect all connections to ambient products from the bottle adapter.

3.Rinse all dispense stations using steps outlined in “DAILY RINSE PROCEDURE”.

4.Disconnect dispenser from power source.

5.Remove the dispense platform cover.

6.Disconnect the dispense platform water line(s) from the supply line inside the refrigerated cabinet and dis- connect the wiring connection(s) from the cabinet receptacle(s).

7.Remove the mounting screw(s) securing the dispense platform(s) to the cabinet .

8.Pull the dispense platform(s) completely out of the cabinet and place it on a flat work surface.

9.Close the dispenser door.

10.Remove the 4 screws securing the pump head.

11.Gently pull the pump head apart.

12.Gently pull the pump tube from around the pump’s rotor.

13.Release the clamps securing the old pump tubing to the plastic elbows.

14.Pull the plastic elbows from the old pump tubing, and discard the old pump tubing.

15.Insert the plastic elbows into the new pump tubing and secure it with the clamps.

16.Gently wrap the new pump tubing around the pump’s rotor.

17.Reassemble the pump housing onto the platform assembly.

18.Repeat steps 10 through 17 for the remaining pump(s).

19.Replace the dispense platform(s) into the refrigerated cabinet, making sure to reconnect all electrical and water connections.

20.Replace the dispense platform cover.

21.Turn power on to dispenser.

22 Install containers of rinse water, run each station and check for leaks. Repair leaks as necessary.

23.Replace product shelf and product containers. Reconnect any connections to ambient product containers.

24.Prime the pumps as described in “PRIMING” in the Initial Fill Section.

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Contents Phone 217 529-6601 FAX 217 JDF-2S JDF-4SBUNN-O-MATIC Commercial Product Warranty User Notices ContentsCE Requirements Initial SET-UPElectrical Requirements Plumbing RequirementsSecure the door cover using 5 screws provided Door Cover InstallationPlumbing Connections JDF-2S Plumbing Connections JDF-4S Plumbing HookupInitial Fill Initial Fill Hose JDF-2S Initial Fill Hose JDF-4SInitial Fill LoadingFrozen Concentrates Ambient Concentrates OptionalProduct Dispense Switch Mechanical Switch Machines Refrigeration SwitchPriming Operating ControlsDispense Lockout Switch JDF-2S shown Product Dispense Switch Membrane Switch MachinesDispense Lockout Switch Program Switch JDF-2S shownPush and Hold Membrane Switch Machines Portion Control Option Mechanical Switch MachinesPortion Control Option Membrane Switch Machines Dispenser USETemperature LEDs JDF-2S Late Models Temperature LEDs JDF-4SDaily Rinse Procedure Cleaning & Preventive MaintenanceAnnually Replace Pump Tubing Cleaning Monthly Clean Condenser CoilsOpen dispenser door Water Flow Testing and Adjustment Adjustment & Optional SettingsPump Speed Adjustment Brix %Temperature Compensated Refractometer Method Adjustment & Optional SettingsAdjustment & Optional Settings Dispenser Lockout Function List Circuit Board LED Indicators JDF-2S Early ModelsLED # LED Color IlluminatesJDF-4S Problem TroubleshootingProbable Cause RemedyCompressor ON/OFF switch Dirty condenser filter or fins TroubleshootingRefrigeration Space around machineProblem Probable Cause Remedy Water only Concentrate onlyNect fittings Initial fill/setupTray 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-4SShown.See Initial Fill Quick Setup Guide JDF-2S and JDF-4S JDF-2S shown
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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.
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