Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn JDF-4SB, JDF-4D manual SERVICE CONT Ballast JDF-2S,4S, Location

Models: JDF-4D JDF-4SB JDF-4S

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SERVICE (CONT.)

SERVICE (CONT.)

Ballast (JDF-2S,4S)

	JDF-2S shown
FIG. 3 BALLAST	P1684.40
FIG. 3 BALLAST
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 CONT Ballast JDF-2S,4S, Location

Contents

49179.0000C 02/14 2013 Bunn-O-Matic Corporation SERVICE & REPAIR MANUALJDF-2S, JDF-4S JDF-4D, JDF-4SB BUNN-O-MATIC CORPORATIONBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Preventive Maintenance CONTENTSSafety first Basic MaintenanceRecommended Daily Cleaning Instructions REQUIRED REGULAR MAINTENANCE Cold Water Circulation TROUBLESHOOTINGPROBLEM PROBABLE CAUSEPROBLEM TROUBLESHOOTING ContinuedRefrigeration Dispenser Locked OutREMEDY TROUBLESHOOTING ContinuedPROBLEM PROBABLE CAUSEPROBLEM concentrate onlywater only TROUBLESHOOTING ContinuedPROBABLE CAUSE TROUBLESHOOTING ContinuedPROBLEM 1. Initial fill/setupPROBABLE CAUSE TROUBLESHOOTING ContinuedPROBLEM from bag-in-box connector to bottleCOMPONENT ACCESS SERVICE49179 SERVICECONT ACCESS PANELSFIG. 1 ACCESS PANELS JDF-4S shownThe JDF-4S uses 2 of the two head dispense platforms SERVICECONT DISPENSE PLATFORM REMOVALSERVICE CONT Ballast JDF-2S,4S FIG. 3 BALLASTLocation SERVICE CONT Cabinet Fan all Models LocationFIG. 5 CABINET FAN GRN Wire SERVICE CONT LG Compressor JDF-2S,4S,4DSERVICE CONT Compressor Cont FIG.12 COMPRESSOR THERMAL SERVICE CONT GD Compressor JDF-2S,4S,4DFIG. 11 COMPRESSOR LocationSERVICE CONT Compressor Cont BLU/BLK GRN WHIPlugs into Relay 230V shown SERVICE CONT Compressor JDF-4SBBRN from Capacitor SERVICE CONT Compressor ContBLU/BLK BLU from CapacitorRED/BLK BLK SERVICE CONT Compressor Switch all ModelsFIG. 19 COMPRESSOR SWITCH LocationBLU/BLK SERVICE CONT Condenser Fan all ModelsFIG. 21 CONDENSER FAN LocationSERVICE CONT Control Board, Main all Models Disconnect the dispenser from the power source SERVICE CONT Portion Control Board JDF-2S,4SFIG. 28 CONTROL BOARD CONNECTORS SERVICE CONT Push Button Control Board JDF-4DPortion Control Board JDF-4D SERVICE CONTSERVICE CONT Circulation Pump all Models FIG. 33 DISPENSE PLATFORM SWITCH SERVICE CONT Dispense Platform Switch all ModelsSERVICE CONT Dispense Pump all Models except JDF-4D SERVICE CONT Dispense Motor all Models FIG. 38 DISPENSE MOTOR CONNECTORSFIG. 37 DISPENSE MOTOR #3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control Board SERVICE CONT Dispense Valve all ModelsFIG. 39 DISPENSE VALVE Dispense Station #1 WHI/VIOP1449 SERVICE CONT Dispense Switches JDF-2S, JDF-4SSERVICE CONT Cold Water Dispense Switch JDF-4S only Location SERVICE CONT Dispense Membrane Switch all ModelsFIG.47 MEMBRANE SWITCHES FIG. 48 MEMBRANE SWITCHSERVICE CONT Cold Water Dispense Membrane Switch all ModelsSERVICE CONT EMI Filter all Models FIG. 49 EMI FILTERJDF-4S shown SERVICE CONT Lamps, Holders and Ballasts Early Models FIG. 51 LAMPS & HOLDERSFIG. 52 LAMP HOLDERS SERVICE CONT LED Lamps JDF-2S, JDF-4S Rectifier JDF-2S, JDF-4S SERVICE CONTFIG. 55 RECTIFIER Relay all Models SERVICE CONTFIG. 57 RELAY Resistor all 230V Models SERVICE CONTFIG. 59 RESISTOR FIG. 62 COLD WATER SOLENOID SERVICE CONT Solenoid - Cold Water JDF-4S onlyWHI/VIO to Control Board WHI to Control BoardBRN to Control Board SERVICE CONT Solenoid - Inlet all ModelsVOLTAGE SERVICE CONT Temperature Probe all ModelsTEMP RESISTANCERESISTANCE SERVICE CONT Temperature Sensor all ModelsFIG. 67 TEMPERATURE SENSOR TEMPto Control SERVICE CONT Transformer all ModelsWHI/BLU to Control Board J6-1,J12-1WHI - 120V T2, 240V T6 SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4SWHI/GRN - T8 WHI/BLK - T12Station Triac MapStation Station2 WIRE DIAGRAM for JDF-2S LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-2S ELECTRICAL SCHEMATIC Models withDIAGRAM JDF-2S ELECTRICAL SCHEMATIC DIAGRAM for JDF-2SModels with Flourescent Lited Doors SCHEMATIC WIRINGSINGLE PHASE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-4S 2 WIREModels with Flourescent Lited Doors ELECTRICAL SCHEMATIC DIAGRAM for JDF-4SSCHEMATIC WIRING DIAGRAM JDF 2 WIRE SINGLE PHASE2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4DPress & Release Models SCHEMATIC WIRING DIAGRAM JDF-4DSINGLE PHASE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control ModelsSCHEMATIC WIRING DIAGRAM JDF-4D 2 WIRESINGLE PHASE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SBSCHEMATIC WIRING DIAGRAM JDF-4S-SB 2 WIRE