SERVICE (CONT.)

Ballast (JDF-2S,4S)

 

JDF-2S shown

FIG. 3 BALLAST

P1684.40

 

Location:

 

The door lamp ballast is located inside the dispenser door mounted in the center of the door rear cover.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Disconnect a black and blue wire from one set of lamp sockets.

3.Connect an ohmmeter to the end of each wire.

4.Check for continuity between the two wires.

If continuity is present as described, the ballast is operating properly.

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

5.Check for continuity between the other pair of black and blue wires.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove door cover by taking out the 5 screws and unplug the dispense switch harness from the door harness. Set door cover and screws aside.

3.Disconnect the 3-pin connector from the ballasts to the door harness.

4.Remove fluorescent bulbs from the brackets. Pull off the four snap-in light sockets from the light panel.

5.Remove the wire to the ballast from the back of each bracket.

6.To disengage the ballast wire from the bracket, push a 1/16” allen wrench (or equivalent tool) into the front hole that lines up with the wire in the back. Pull the wire out.

7.Repeat for each bracket.

8.White jumper must remain in place on the back of the light socket.

9.Remove screws from each ballast. Remove the green ground wire from the ballast bracket by removing the bracket’s bottom screw.

10.Install the single ballast (wires on the bottom) onto the ballast bracket using 2 of the screws previously removed.

11.Attach ballast wires to the back of bulb sockets by pushing wires into holes in back of socket.

Note: Attach black wires to the top sockets, and blue wires to the bottom sockets. Reference electrical sche- matic if needed.

12.Snap all 4 bulb sockets back onto light panel. Re- install fluorescent bulbs.

13.Attach green ground wire to the bottom hole of the ballast bracket using 1 screw.

14.Plug in 3-pin connector into the door harness.

15.To replace door cover, re-connect the dispense switch harness to door harness. Fasten with 5 screws.

16.Reconnect power to the unit. Test operation.

P1219

FIG. 4 BALLAST TERMINALS

15

49179

110613

 

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Bunn JDF-4SB, JDF-4D manual Service, Ballast JDF-2S,4S, Location, Test Procedure
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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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