Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn JDF-4SB, JDF-4D manual Service Cont, Location, Membrane Switches

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

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Cold Water Dispense Membrane Switch (all Models)

SERVICE (CONT.)

Cold Water Dispense Membrane Switch (all Models)

COLD

FIG.47 MEMBRANE SWITCHES

Location:

The dispense buttons are located on the lower outside of the dispenser door and actuate switches on the dispense switch board located on the inside of the door.

Test Procedures:

NOTE: Before continuing, check that the ribbon cable is properly connected to the control board and not a pin off in either direction.

1.Disconnect the dispenser from the power source.

2.Remove the rear panel and disconnect ribbon cable.

3.Check for continuity of the switches using pin #1as common.

#1 Common #2 Cold Water

If continuity is not present when the appropriate switch is pressed, the Membrane Switch must be replaced. If continuity is present, chech the short harness going to J6 on the Control Board.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Open the dispenser door.

3.Remove the four #8-32 screws securing the lower door panel and remove the panel.

4.Disconnect the three pin harness from the switch board.

5.Carefully peel the membrane switch from the front of the switch bezel.

6.Remove any excess adhesive from the bezel sur- face.

7.Remove the backing from the new membrane switch.

8.Feed the membrane switch harness through the openning and apply the new membrane switch to the switch bezel.

9.Connect the switch harness to the control board.

1

WATER

COLD

COLD WATER DISPENSE

FIG. 48 MEMBRANE SWITCH

37	49179	110613

Image 37

Bunn JDF-4SB, JDF-4D manual Service Cont, Location, Cold Water Dispense Membrane Switch all Models, Membrane Switches

Contents

JDF-2S, JDF-4S JDF-4D, JDF-4SB SERVICE & REPAIR MANUALBUNN-O-MATIC CORPORATION 49179.0000C 02/14 2013 Bunn-O-Matic CorporationBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Safety first CONTENTSBasic Maintenance Preventive MaintenanceRecommended Daily Cleaning Instructions REQUIRED REGULAR MAINTENANCE PROBLEM TROUBLESHOOTINGPROBABLE CAUSE Cold Water CirculationRefrigeration TROUBLESHOOTING ContinuedDispenser Locked Out PROBLEMPROBLEM TROUBLESHOOTING ContinuedPROBABLE CAUSE REMEDYwater only concentrate onlyTROUBLESHOOTING Continued PROBLEMPROBLEM TROUBLESHOOTING Continued1. Initial fill/setup PROBABLE CAUSEPROBLEM TROUBLESHOOTING Continuedfrom bag-in-box connector to bottle PROBABLE CAUSECOMPONENT ACCESS SERVICEFIG. 1 ACCESS PANELS SERVICECONT ACCESS PANELSJDF-4S shown 49179The JDF-4S uses 2 of the two head dispense platforms SERVICECONT DISPENSE PLATFORM REMOVALFIG. 3 BALLAST SERVICE CONT Ballast JDF-2S,4SLocation Location SERVICE CONT Cabinet Fan all ModelsFIG. 5 CABINET FAN GRN Wire SERVICE CONT LG Compressor JDF-2S,4S,4DSERVICE CONT Compressor Cont FIG. 11 COMPRESSOR SERVICE CONT GD Compressor JDF-2S,4S,4DLocation FIG.12 COMPRESSOR THERMALBLU/BLK GRN WHI SERVICE CONT Compressor ContPlugs into Relay 230V shown SERVICE CONT Compressor JDF-4SBBLU/BLK SERVICE CONT Compressor ContBLU from Capacitor BRN from CapacitorFIG. 19 COMPRESSOR SWITCH SERVICE CONT Compressor Switch all ModelsLocation RED/BLK BLKFIG. 21 CONDENSER FAN SERVICE CONT Condenser Fan all ModelsLocation BLU/BLKSERVICE 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 FIG. 38 DISPENSE MOTOR CONNECTORS SERVICE CONT Dispense Motor all ModelsFIG. 37 DISPENSE MOTOR FIG. 39 DISPENSE VALVE SERVICE CONT Dispense Valve all ModelsDispense Station #1 WHI/VIO #3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control BoardP1449 SERVICE CONT Dispense Switches JDF-2S, JDF-4SSERVICE CONT Cold Water Dispense Switch JDF-4S only Location SERVICE CONT Dispense Membrane Switch all ModelsSERVICE CONT FIG. 48 MEMBRANE SWITCHCold 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 WHI/VIO to Control Board SERVICE CONT Solenoid - Cold Water JDF-4S onlyWHI to Control Board FIG. 62 COLD WATER SOLENOIDBRN to Control Board SERVICE CONT Solenoid - Inlet all ModelsTEMP SERVICE CONT Temperature Probe all ModelsRESISTANCE VOLTAGETEMP SERVICE CONT Temperature Sensor all ModelsRESISTANCE VOLTAGEWHI/BLU to Control SERVICE CONT Transformer all ModelsBoard J6-1,J12-1 to ControlWHI/GRN - T8 SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4SWHI/BLK - T12 WHI - 120V T2, 240V T6Station Triac MapStation StationSCHEMATIC WIRING DIAGRAM JDF-2S DIAGRAM for JDF-2S LED Lited DoorsELECTRICAL SCHEMATIC Models with 2 WIREModels with Flourescent Lited Doors ELECTRICAL SCHEMATIC DIAGRAM for JDF-2SSCHEMATIC WIRING DIAGRAM JDF-2SSCHEMATIC WIRING DIAGRAM JDF-4S ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited Doors2 WIRE SINGLE PHASESCHEMATIC WIRING DIAGRAM JDF ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S2 WIRE SINGLE PHASE Models with Flourescent Lited DoorsPress & Release Models ELECTRICAL SCHEMATIC DIAGRAM for JDF-4DSCHEMATIC WIRING DIAGRAM JDF-4D 2 WIRESCHEMATIC WIRING DIAGRAM JDF-4D ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control Models2 WIRE SINGLE PHASESCHEMATIC WIRING DIAGRAM JDF-4S-SB ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SB2 WIRE SINGLE PHASE