Contents
Phone 217 529-6601 FAX 217
FMD Series
Excluding regular maintenance items
BUNN-O-MATIC Commercial Product Warranty
Introduction
Cleaning
Required Regular Maintenance
Problem Probable Cause
Product will not dispense
Problem
Level Control Board and Probe FMD-1
Remedy
Problem Probable Cause Remedy
Troubleshooting
Install a regulator if necessary to
Product overflows container Dispense Switch
Excess dust Fan Refer to Service
Procedures. See
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Component Access
Access Panels
SERVICEcont
Test Procedures Auger Motor
Service Auger Drive Components all Models
Location
Auger Drive Components
Service
Spacer Auger Motor Hopper Base Dust Seal Washer
Retainer Clip Panel RED to Control Board
Rinse and dry each item thoroughly
Remove auger drive shaft bushing from hopper
Bushing Panel Auger Drive Shaft
Locknut Auger Motor Bracket
Auxillary Control Board FMD DBC-3 only
Disconnect the dispenser from the power source
Service Auxillary Control Board
Ballast all Models
Service
Control Board
Test Procedure Power Supply
Hopper Motor Control Circuitry
Check that the RINSE/RUN switch is in the Rinse position
Connectors on the control board
Using four #6-32 keps nuts
Control Board
Control board to the component bracket
Control Board
Check that the rinse/run switch is in the run posi- tion
Control Board Connectors
Location
Remove temperature probe from the tank
Remove bulb from the tank
BLK to Main
Control Thermostat
WHI to Main
If voltage is present as described, proceed to #6
Open the dispenser door and remove the bottom door cover
If voltage is present as described, proceed to #7
FMD DBC-3
Digital Touch Control Switch FMD DBC-2,DBC-3
FMD DBC-2FD
Connectors
Digital Touch Control Switch
EMI Filter
EMI Filter 230 Volt FMD DBC-3
Disconnect the black and white wires from the fan terminals
Test Procedures
Vacuum FAN all Models
Frother and Whipper Motor
Frother and Whipper Motor all Models except -2FD
Will seat inside the whipper chamber
Frother and Whipper Motor
Hopper Drive Board
Hopper Drive Board FMD-1 only
Hopper Drive Board Terminals
Disconnect the wires from the switch terminals
HOT/COLD Switch Optional for FMD DBC-3
Terminals
Door Assy Upper Panel Lamp Holders Lower Panel
Lamp Holder all Models
Lamp Starter and Socket
Level Control Board and Level Probe FMD-1 only
Reconnect the violet wire to terminal
Level Board Terminals
Limit Thermostat
Limit Thermostat all Models
Overflow Protection Switch
RINSE/RUN Switch
Rinse /RUN Switch all Models
Cold Water Solenoid Terminals
Solenoid Valve Cold Water Optional for FMD-2,-3,-4,-5
Dispense Solenoid Valves P1637.40 Location
Solenoid Valves Dispense all Models
Solenoid Valve
HOT Water Dispense Solenoid Valve FMD-2FD,DBC-2FD,-3,DBC-3
Inlet Solenoid Valve
Solenoid Valve Inlet all Models
Tank Heater all Models
WHI or RED to Main BLK to Limit Wiring Harness
BRN/BLK from WHI from Main Harness
Tank Heater Relay FMD-4,-5,120V Dispensers only
Tank Heater Switch
Tank Heater Switch all Models
Transformer all Models
Disconnected from the main wiring harness
Remove and discard the transformer
Q2 & MOV3 Controls Center Whipper Motor
Q1 & MOV1 Controls Left Whipper Motor
Q5 & MOV4 Controls Right Whipper Motor
Q7 & MOV2 Controls Refill Valve
BLK
Schematic Wiring Diagram FMD-1
WHI-16
Schematic Wiring Diagram FMD-1A
Schematic Wiring Diagram FMD-2
Schematic Wiring Diagram FMD-2A
Schematic Wiring Diagram FMD DBC-2 Freeze Dried W/HOT Water
Schematic Wiring Diagram FMD-2FD
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Schematic Wiring Diagram FMD DBC-3 With HOT Water Dispense
Schematic Wiring Diagram Fmda DBC-3 With HOT Water Dispense
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Schematic Wiring Diagram FMD-5A