JDF-2S, JDF-4S JDF-4D, JDF-4SB
SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATION
49179.0000C 02/14 2013 Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Safety first
CONTENTS
Basic Maintenance
Preventive Maintenance
Recommended Daily Cleaning Instructions
REQUIRED REGULAR MAINTENANCE
PROBLEM
TROUBLESHOOTING
PROBABLE CAUSE
Cold Water Circulation
Refrigeration
TROUBLESHOOTING Continued
Dispenser Locked Out
PROBLEM
PROBLEM
TROUBLESHOOTING Continued
PROBABLE CAUSE
REMEDY
water only
concentrate only
TROUBLESHOOTING Continued
PROBLEM
PROBLEM
TROUBLESHOOTING Continued
1. Initial fill/setup
PROBABLE CAUSE
PROBLEM
TROUBLESHOOTING Continued
from bag-in-box connector to bottle
PROBABLE CAUSE
COMPONENT ACCESS
SERVICE
FIG. 1 ACCESS PANELS
SERVICECONT ACCESS PANELS
JDF-4S shown
49179
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. 11 COMPRESSOR
SERVICE CONT GD Compressor JDF-2S,4S,4D
Location
FIG.12 COMPRESSOR THERMAL
SERVICE CONT Compressor Cont
BLU/BLK GRN WHI
Plugs into Relay
230V shown
SERVICE CONT Compressor JDF-4SB
BLU/BLK
SERVICE CONT Compressor Cont
BLU from Capacitor
BRN from Capacitor
FIG. 19 COMPRESSOR SWITCH
SERVICE CONT Compressor Switch all Models
Location
RED/BLK BLK
FIG. 21 CONDENSER FAN
SERVICE CONT Condenser Fan all Models
Location
BLU/BLK
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
FIG. 39 DISPENSE VALVE
SERVICE CONT Dispense Valve all Models
Dispense Station #1 WHI/VIO
#3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control Board
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
SERVICE CONT
FIG. 48 MEMBRANE SWITCH
Cold Water Dispense Membrane Switch all Models
FIG.47 MEMBRANE SWITCHES
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
WHI/VIO to Control Board
SERVICE CONT Solenoid - Cold Water JDF-4S only
WHI to Control Board
FIG. 62 COLD WATER SOLENOID
BRN to Control Board
SERVICE CONT Solenoid - Inlet all Models
TEMP
SERVICE CONT Temperature Probe all Models
RESISTANCE
VOLTAGE
FIG. 67 TEMPERATURE SENSOR
SERVICE CONT Temperature Sensor all Models
TEMP
RESISTANCE
WHI/BLU to Control
SERVICE CONT Transformer all Models
Board J6-1,J12-1
to Control
WHI/GRN - T8
SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4S
WHI/BLK - T12
WHI - 120V T2, 240V T6
Station
Triac Map
Station
Station
SCHEMATIC WIRING DIAGRAM JDF-2S
DIAGRAM for JDF-2S LED Lited Doors
ELECTRICAL SCHEMATIC Models with
2 WIRE
Models with Flourescent Lited Doors
ELECTRICAL SCHEMATIC DIAGRAM for JDF-2S
SCHEMATIC WIRING
DIAGRAM JDF-2S
SCHEMATIC WIRING DIAGRAM JDF-4S
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited Doors
2 WIRE
SINGLE PHASE
SCHEMATIC WIRING DIAGRAM JDF
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S
2 WIRE SINGLE PHASE
Models with Flourescent Lited Doors
Press & Release Models
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D
SCHEMATIC WIRING DIAGRAM JDF-4D
2 WIRE
SCHEMATIC WIRING DIAGRAM JDF-4D
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control Models
2 WIRE
SINGLE PHASE
SCHEMATIC WIRING DIAGRAM JDF-4S-SB
ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SB
2 WIRE
SINGLE PHASE
FILTER