Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn JDF-4SB, JDF-4D manual Relay all Models, Service Cont

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

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Relay (all Models)

SERVICE (CONT.)

Relay (all Models)

FIG. 57 RELAY

Location:

The relay (or contactor) is located inside the dis- penser chassis on the lower outside of the component bracket.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.With a voltmeter, check the voltage across the white wire and the white/black wire. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for 120 volt models.

b)230 volts ac for 230 volt models.

3.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the Wir- ing Diagram and check the dispenser wiring harness. If harness has continuity, replace Control Board.

4.Disconnect the blue/black wire and the red/black wires from relay terminals #4 and #6.

5.Connect the dispenser to the power source.

6.Turn on power and check for continuity across terminals on relay.

If continuity is present as described, disconnect the dispenser from power source and reconnect wires to terminals #4 and #6, the relay is working.

If continuity is not present as described, do the same continuity test across terminals #2 and #8. If continu- ity is present between terminals #2 and #8, reconnect wires to terminals #4 and #6 instead of #2 and #8.

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

Removal and Replacement:

1.Disconnect the wires from the relay.

2.Remove the two #8-32 locking screws securing the relay and mounting bracket to the chassis. Remove and discard relay.

3.Install the new relay to the mounting bracket and then on the chassis using two #8-32 locking screws.

4.Refer to Fig. 58 to reconnect the wires.

	Terminal #0	Terminal #1
	WHI from	BLK from
	Main Harness	Main Harness
		Terminal #8
		BLK from
		Main Harness
	Terminal #2	Terminal #6
	Terminal #4	WHI/ORN from
	Terminal #4	Main Harness
		Main Harness
	FIG. 58 RELAY TERMINALS

42	49179	110613

Image 42

Bunn JDF-4SB, JDF-4D manual Relay all Models, Service Cont

Contents

BUNN-O-MATIC CORPORATION SERVICE & REPAIR MANUALJDF-2S, JDF-4S JDF-4D, JDF-4SB 49179.0000C 02/14 2013 Bunn-O-Matic CorporationBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Basic Maintenance CONTENTSSafety first Preventive MaintenanceRecommended Daily Cleaning Instructions REQUIRED REGULAR MAINTENANCE PROBABLE CAUSE TROUBLESHOOTINGPROBLEM Cold Water CirculationDispenser Locked Out TROUBLESHOOTING ContinuedRefrigeration PROBLEMPROBABLE CAUSE TROUBLESHOOTING ContinuedPROBLEM REMEDYTROUBLESHOOTING Continued concentrate onlywater only PROBLEM1. Initial fill/setup TROUBLESHOOTING ContinuedPROBLEM PROBABLE CAUSEfrom bag-in-box connector to bottle TROUBLESHOOTING ContinuedPROBLEM PROBABLE CAUSESERVICE COMPONENT ACCESSJDF-4S shown SERVICECONT ACCESS PANELSFIG. 1 ACCESS PANELS 49179SERVICECONT DISPENSE PLATFORM REMOVAL The JDF-4S uses 2 of the two head dispense platformsSERVICE CONT Ballast JDF-2S,4S FIG. 3 BALLASTLocation SERVICE CONT Cabinet Fan all Models LocationFIG. 5 CABINET FAN SERVICE CONT LG Compressor JDF-2S,4S,4D GRN WireSERVICE CONT Compressor Cont Location SERVICE CONT GD Compressor JDF-2S,4S,4DFIG. 11 COMPRESSOR FIG.12 COMPRESSOR THERMALSERVICE CONT Compressor Cont BLU/BLK GRN WHIPlugs into Relay SERVICE CONT Compressor JDF-4SB 230V shownBLU from Capacitor SERVICE CONT Compressor ContBLU/BLK BRN from CapacitorLocation SERVICE CONT Compressor Switch all ModelsFIG. 19 COMPRESSOR SWITCH RED/BLK BLKLocation SERVICE CONT Condenser Fan all ModelsFIG. 21 CONDENSER FAN 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 SERVICE CONT Dispense Motor all Models FIG. 38 DISPENSE MOTOR CONNECTORSFIG. 37 DISPENSE MOTOR Dispense Station #1 WHI/VIO SERVICE CONT Dispense Valve all ModelsFIG. 39 DISPENSE VALVE #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 LocationCold Water Dispense Membrane Switch all Models FIG. 48 MEMBRANE SWITCHSERVICE CONT FIG.47 MEMBRANE SWITCHESSERVICE 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 WHI to Control Board SERVICE CONT Solenoid - Cold Water JDF-4S onlyWHI/VIO to Control Board FIG. 62 COLD WATER SOLENOIDSERVICE CONT Solenoid - Inlet all Models BRN to Control BoardRESISTANCE SERVICE CONT Temperature Probe all ModelsTEMP VOLTAGETEMP SERVICE CONT Temperature Sensor all ModelsFIG. 67 TEMPERATURE SENSOR RESISTANCEBoard J6-1,J12-1 SERVICE CONT Transformer all ModelsWHI/BLU to Control to ControlWHI/BLK - T12 SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4SWHI/GRN - T8 WHI - 120V T2, 240V T6Station Triac MapStation StationELECTRICAL SCHEMATIC Models with DIAGRAM for JDF-2S LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-2S 2 WIRESCHEMATIC WIRING ELECTRICAL SCHEMATIC DIAGRAM for JDF-2SModels with Flourescent Lited Doors DIAGRAM JDF-2S2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-4S SINGLE PHASE2 WIRE SINGLE PHASE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4SSCHEMATIC WIRING DIAGRAM JDF Models with Flourescent Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-4D ELECTRICAL SCHEMATIC DIAGRAM for JDF-4DPress & Release Models 2 WIRE2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control ModelsSCHEMATIC WIRING DIAGRAM JDF-4D SINGLE PHASE2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SBSCHEMATIC WIRING DIAGRAM JDF-4S-SB SINGLE PHASE