49179.0000C 02/14 2013 Bunn-O-Matic Corporation
SERVICE & REPAIR MANUAL
JDF-2S, JDF-4S JDF-4D, JDF-4SB
BUNN-O-MATIC CORPORATION
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Preventive Maintenance
CONTENTS
Safety first
Basic Maintenance
Recommended Daily Cleaning Instructions
REQUIRED REGULAR MAINTENANCE
Cold Water Circulation
TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
PROBLEM
TROUBLESHOOTING Continued
Refrigeration
Dispenser Locked Out
REMEDY
TROUBLESHOOTING Continued
PROBLEM
PROBABLE CAUSE
PROBLEM
concentrate only
water only
TROUBLESHOOTING Continued
PROBABLE CAUSE
TROUBLESHOOTING Continued
PROBLEM
1. Initial fill/setup
PROBABLE CAUSE
TROUBLESHOOTING Continued
PROBLEM
from bag-in-box connector to bottle
COMPONENT ACCESS
SERVICE
49179
SERVICECONT ACCESS PANELS
FIG. 1 ACCESS PANELS
JDF-4S shown
The JDF-4S uses 2 of the two head dispense platforms
SERVICECONT DISPENSE PLATFORM REMOVAL
SERVICE CONT Ballast JDF-2S,4S
FIG. 3 BALLAST
Location
SERVICE CONT Cabinet Fan all Models
Location
FIG. 5 CABINET FAN
GRN Wire
SERVICE CONT LG Compressor JDF-2S,4S,4D
SERVICE CONT Compressor Cont
FIG.12 COMPRESSOR THERMAL
SERVICE CONT GD Compressor JDF-2S,4S,4D
FIG. 11 COMPRESSOR
Location
SERVICE CONT Compressor Cont
BLU/BLK GRN WHI
Plugs into Relay
230V shown
SERVICE CONT Compressor JDF-4SB
BRN from Capacitor
SERVICE CONT Compressor Cont
BLU/BLK
BLU from Capacitor
RED/BLK BLK
SERVICE CONT Compressor Switch all Models
FIG. 19 COMPRESSOR SWITCH
Location
BLU/BLK
SERVICE CONT Condenser Fan all Models
FIG. 21 CONDENSER FAN
Location
SERVICE CONT Control Board, Main all Models
Disconnect the dispenser from the power source
SERVICE CONT Portion Control Board JDF-2S,4S
FIG. 28 CONTROL BOARD CONNECTORS
SERVICE CONT Push Button Control Board JDF-4D
Portion Control Board JDF-4D
SERVICE CONT
SERVICE CONT Circulation Pump all Models
FIG. 33 DISPENSE PLATFORM SWITCH
SERVICE CONT Dispense Platform Switch all Models
SERVICE CONT Dispense Pump all Models except JDF-4D
SERVICE CONT Dispense Motor all Models
FIG. 38 DISPENSE MOTOR CONNECTORS
FIG. 37 DISPENSE MOTOR
#3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control Board
SERVICE CONT Dispense Valve all Models
FIG. 39 DISPENSE VALVE
Dispense Station #1 WHI/VIO
P1449
SERVICE CONT Dispense Switches JDF-2S, JDF-4S
SERVICE CONT Cold Water Dispense Switch JDF-4S only
Location
SERVICE CONT Dispense Membrane Switch all Models
FIG.47 MEMBRANE SWITCHES
FIG. 48 MEMBRANE SWITCH
SERVICE CONT
Cold Water Dispense Membrane Switch all Models
SERVICE CONT EMI Filter all Models
FIG. 49 EMI FILTER
JDF-4S shown
SERVICE CONT Lamps, Holders and Ballasts Early Models
FIG. 51 LAMPS & HOLDERS
FIG. 52 LAMP HOLDERS
SERVICE CONT LED Lamps JDF-2S, JDF-4S
Rectifier JDF-2S, JDF-4S
SERVICE CONT
FIG. 55 RECTIFIER
Relay all Models
SERVICE CONT
FIG. 57 RELAY
Resistor all 230V Models
SERVICE CONT
FIG. 59 RESISTOR
FIG. 62 COLD WATER SOLENOID
SERVICE CONT Solenoid - Cold Water JDF-4S only
WHI/VIO to Control Board
WHI to Control Board
BRN to Control Board
SERVICE CONT Solenoid - Inlet all Models
VOLTAGE
SERVICE CONT Temperature Probe all Models
TEMP
RESISTANCE
RESISTANCE
SERVICE CONT Temperature Sensor all Models
FIG. 67 TEMPERATURE SENSOR
TEMP
to Control
SERVICE CONT Transformer all Models
WHI/BLU to Control
Board J6-1,J12-1
WHI - 120V T2, 240V T6
SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4S
WHI/GRN - T8
WHI/BLK - T12
Station
Triac Map
Station
Station
2 WIRE
DIAGRAM for JDF-2S LED Lited Doors
SCHEMATIC WIRING DIAGRAM JDF-2S
ELECTRICAL SCHEMATIC Models with
DIAGRAM JDF-2S
ELECTRICAL SCHEMATIC DIAGRAM for JDF-2S
Models with Flourescent Lited Doors
SCHEMATIC WIRING
SINGLE PHASE
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited Doors
SCHEMATIC WIRING DIAGRAM JDF-4S
2 WIRE
Models with Flourescent Lited Doors
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S
SCHEMATIC WIRING DIAGRAM JDF
2 WIRE SINGLE PHASE
2 WIRE
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D
Press & Release Models
SCHEMATIC WIRING DIAGRAM JDF-4D
SINGLE PHASE
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control Models
SCHEMATIC WIRING DIAGRAM JDF-4D
2 WIRE
SINGLE PHASE
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SB
SCHEMATIC WIRING DIAGRAM JDF-4S-SB
2 WIRE
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