Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn JDF-4SB, JDF-4D manual SERVICE CONT LED Lamps JDF-2S, JDF-4S

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

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SERVICE (CONT.)

SERVICE (CONT.)

LED Lamps (JDF-2S, JDF-4S)

LED regulator board

FIG. 53 LED DOOR LIGHTS

Location:

The LED door lights are located inside the dispenser door.

Test Procedures:

No illumination at all: First verify that the dispense lockout switch has not been turned off!

1.Disconnect power from the dispenser.

2.Check the voltage across the black and red leads ofJ2 or J3 at the LED regulator board with a voltmeter. Reconnect power to the dispenser. The indication must be 24 volts dc.

3.Disconnect power from the dispenser.

If voltage is present as described, the LED regulator board is working correctly.

If voltage is not present as described, go to step 4.

4.Check for supply voltage (unregulated +30VDC) across brown wire and white wire at J1 of the regulator board. (FIG 54).

If voltge is present as described, replace LED regulator board.

If voltage is not present as described, check the wiring back to the main CBA.

Removal and Replacement:

1.Disconnect power from the dispenser.

2.Remove the five #6-32 screws securing the door cover to the door.

3.Carefully lower the door cover and disconnect the lamp terminals from the LED regulator board.

4.Remove and discard the faulty LED board.

5.Install a new LED regulator board exposing the adhesive backing.

6.Refer to Fig. 54 and reconnect wires to the LED regulator board.

7.Replace the door cover and secure with the five #6-32 screws.

8.Return power to the dispenser.

J3

J2

J1

White to brown

unregulated +30VDC

FIG. 54 LED DOOR LIGHT WIRING

40	49179	110613

Image 40

Bunn JDF-4SB, JDF-4D manual SERVICE CONT LED Lamps JDF-2S, JDF-4S

Contents

SERVICE & REPAIR MANUAL JDF-2S, JDF-4S JDF-4D, JDF-4SBBUNN-O-MATIC CORPORATION 49179.0000C 02/14 2013 Bunn-O-Matic CorporationBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY CONTENTS Safety firstBasic Maintenance Preventive MaintenanceRecommended Daily Cleaning Instructions REQUIRED REGULAR MAINTENANCE TROUBLESHOOTING PROBLEMPROBABLE CAUSE Cold Water CirculationTROUBLESHOOTING Continued RefrigerationDispenser Locked Out PROBLEMTROUBLESHOOTING Continued PROBLEMPROBABLE CAUSE REMEDYconcentrate only water onlyTROUBLESHOOTING Continued PROBLEMTROUBLESHOOTING Continued PROBLEM1. Initial fill/setup PROBABLE CAUSETROUBLESHOOTING Continued PROBLEMfrom bag-in-box connector to bottle PROBABLE CAUSESERVICE COMPONENT ACCESSSERVICECONT ACCESS PANELS FIG. 1 ACCESS PANELSJDF-4S shown 49179SERVICECONT DISPENSE PLATFORM REMOVAL The JDF-4S uses 2 of the two head dispense platformsFIG. 3 BALLAST SERVICE CONT Ballast JDF-2S,4SLocation Location SERVICE CONT Cabinet Fan all ModelsFIG. 5 CABINET FAN SERVICE CONT LG Compressor JDF-2S,4S,4D GRN WireSERVICE CONT Compressor Cont SERVICE CONT GD Compressor JDF-2S,4S,4D FIG. 11 COMPRESSORLocation FIG.12 COMPRESSOR THERMALBLU/BLK GRN WHI SERVICE CONT Compressor ContPlugs into Relay SERVICE CONT Compressor JDF-4SB 230V shownSERVICE CONT Compressor Cont BLU/BLKBLU from Capacitor BRN from CapacitorSERVICE CONT Compressor Switch all Models FIG. 19 COMPRESSOR SWITCHLocation RED/BLK BLKSERVICE CONT Condenser Fan all Models FIG. 21 CONDENSER FANLocation BLU/BLKSERVICE CONT Control Board, Main all Models SERVICE CONT Portion Control Board JDF-2S,4S Disconnect the dispenser from the power sourceSERVICE CONT Push Button Control Board JDF-4D FIG. 28 CONTROL BOARD CONNECTORSSERVICE CONT Portion Control Board JDF-4DSERVICE CONT Circulation Pump all Models SERVICE CONT Dispense Platform Switch all Models FIG. 33 DISPENSE PLATFORM SWITCHSERVICE CONT Dispense Pump all Models except JDF-4D FIG. 38 DISPENSE MOTOR CONNECTORS SERVICE CONT Dispense Motor all ModelsFIG. 37 DISPENSE MOTOR SERVICE CONT Dispense Valve all Models FIG. 39 DISPENSE VALVEDispense Station #1 WHI/VIO #3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control BoardSERVICE CONT Dispense Switches JDF-2S, JDF-4S P1449SERVICE CONT Cold Water Dispense Switch JDF-4S only SERVICE CONT Dispense Membrane Switch all Models LocationFIG. 48 MEMBRANE SWITCH SERVICE CONTCold Water Dispense Membrane Switch all Models FIG.47 MEMBRANE SWITCHESFIG. 49 EMI FILTER SERVICE CONT EMI Filter all ModelsJDF-4S shown FIG. 51 LAMPS & HOLDERS SERVICE CONT Lamps, Holders and Ballasts Early ModelsFIG. 52 LAMP HOLDERS SERVICE CONT LED Lamps JDF-2S, JDF-4S SERVICE CONT Rectifier JDF-2S, JDF-4SFIG. 55 RECTIFIER SERVICE CONT Relay all ModelsFIG. 57 RELAY SERVICE CONT Resistor all 230V ModelsFIG. 59 RESISTOR SERVICE CONT Solenoid - Cold Water JDF-4S only WHI/VIO to Control BoardWHI to Control Board FIG. 62 COLD WATER SOLENOIDSERVICE CONT Solenoid - Inlet all Models BRN to Control BoardSERVICE CONT Temperature Probe all Models TEMPRESISTANCE VOLTAGESERVICE CONT Temperature Sensor all Models FIG. 67 TEMPERATURE SENSORTEMP RESISTANCESERVICE CONT Transformer all Models WHI/BLU to ControlBoard J6-1,J12-1 to ControlSERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4S WHI/GRN - T8WHI/BLK - T12 WHI - 120V T2, 240V T6Triac Map StationStation StationDIAGRAM for JDF-2S LED Lited Doors SCHEMATIC WIRING DIAGRAM JDF-2SELECTRICAL SCHEMATIC Models with 2 WIREELECTRICAL SCHEMATIC DIAGRAM for JDF-2S Models with Flourescent Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-2SELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited Doors SCHEMATIC WIRING DIAGRAM JDF-4S2 WIRE SINGLE PHASEELECTRICAL SCHEMATIC DIAGRAM for JDF-4S SCHEMATIC WIRING DIAGRAM JDF2 WIRE SINGLE PHASE Models with Flourescent Lited DoorsELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Press & Release ModelsSCHEMATIC WIRING DIAGRAM JDF-4D 2 WIREELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control Models SCHEMATIC WIRING DIAGRAM JDF-4D2 WIRE SINGLE PHASEELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SB SCHEMATIC WIRING DIAGRAM JDF-4S-SB2 WIRE SINGLE PHASE