Bunn FMD-5, FMD-4 manual Schematic Wiring Diagram FMD-1A, WHI-16

Page 56

SCHEMATIC WIRING DIAGRAM FMD-1A

					GRN
	L1
	HEATER		CONTROL	LIMIT	THERMAL
	HEATER		CONTROL	LIMIT	FUSE
			THERMOSTAT		FUSE
	SWITCH	BLK-16	THERMOSTAT	THERMOSTAT BLK-16		TANK HEATER
	SWITCH	BLK-16	BLK-16	THERMOSTAT BLK-16		TANK HEATER
	BLK-16

L2

THERMAL

FUSE

WHI-16

BLK

BLK

	RUN/RINSE
	SWITCH			WHI/RED
RED	RED			WHI/RED

	DISPENSE			WHIPPER
RED	SOL	WHI	RED	M
	SOL			M

WHI

RED

BLK

HOPPER SPEED ADJUST

RED

BLK

GRN

J1

1 2 3

HOPPER

DRIVE

PCB

HOPPER

RED M BLK

			FAN	WHI
			FAN
			TANK INLET
LIQUID	1	VIO	SOL	WHI
	1	BLK	SOL
	2	BLK
LEVEL	2			WHI
LEVEL	3			WHI
BOARD	3	PNK
	4	PNK
GRN	4
GRN
WHI			PROBE
			GRN

WHI

BLK	BLK	FLUORESCENT	BLK BLU
BLK	BLK	LAMP	BLK BLU
		LAMP		BLU WHI BLK RED
		BALLAST
		GRN
		GRN	CHASSIS	1
				1
				BLK RED
				BLU WHI
				1
		DOOR		BLU WHI
				BLU WHI

230 VOLTS AC CE

2 WIRE + GND

SINGLE PHASE 50/60 HZ

DISPENSE SWITCH

RED BLK

4

BLU		WHI
BLU	RED	BLK
	BLK	STARTER
	BLK	STARTER
	RED	BLK
		WHI

56	42672 122209

Image 56

Contents FMD Series Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Excluding regular maintenance itemsIntroduction Cleaning Required Regular Maintenance Problem Probable Cause Problem Product will not dispenseLevel Control Board and Probe FMD-1 RemedyProblem Probable Cause Remedy Troubleshooting Product overflows container Dispense Switch Install a regulator if necessary toExcess dust Fan Refer to Service Procedures. See42672 Component Access 20,23SERVICEcont Access PanelsLocation Service Auger Drive Components all ModelsTest Procedures Auger Motor Service Auger Drive ComponentsSpacer Auger Motor Hopper Base Dust Seal Washer Retainer Clip Panel RED to Control BoardRemove auger drive shaft bushing from hopper Rinse and dry each item thoroughlyBushing Panel Auger Drive Shaft Locknut Auger Motor BracketAuxillary Control Board FMD DBC-3 only Service Auxillary Control Board Disconnect the dispenser from the power sourceService Ballast all ModelsTest Procedure Power Supply Control BoardCheck that the RINSE/RUN switch is in the Rinse position Hopper Motor Control CircuitryUsing four #6-32 keps nuts Connectors on the control boardControl Board Control board to the component bracketControl Board Check that the rinse/run switch is in the run posi- tion Control Board Connectors Remove bulb from the tank Remove temperature probe from the tankLocation WHI to Main Control ThermostatBLK to Main If voltage is present as described, proceed to #7 Open the dispenser door and remove the bottom door coverIf voltage is present as described, proceed to #6 FMD DBC-2FD Digital Touch Control Switch FMD DBC-2,DBC-3FMD DBC-3 Digital Touch Control Switch ConnectorsEMI Filter 230 Volt FMD DBC-3 EMI FilterVacuum FAN all Models Test ProceduresDisconnect the black and white wires from the fan terminals Frother and Whipper Motor all Models except -2FD Frother and Whipper MotorFrother and Whipper Motor Will seat inside the whipper chamberHopper Drive Board FMD-1 only Hopper Drive BoardHopper Drive Board Terminals HOT/COLD Switch Optional for FMD DBC-3 Disconnect the wires from the switch terminalsTerminals Lamp Holder all Models Door Assy Upper Panel Lamp Holders Lower PanelLamp Starter and Socket Reconnect the violet wire to terminal Level Control Board and Level Probe FMD-1 onlyLevel Board Terminals Limit Thermostat all Models Limit ThermostatOverflow Protection Switch Rinse /RUN Switch all Models RINSE/RUN SwitchSolenoid Valve Cold Water Optional for FMD-2,-3,-4,-5 Cold Water Solenoid TerminalsSolenoid Valves Dispense all Models Dispense Solenoid Valves P1637.40 LocationHOT Water Dispense Solenoid Valve FMD-2FD,DBC-2FD,-3,DBC-3 Solenoid ValveSolenoid Valve Inlet all Models Inlet Solenoid ValveWHI or RED to Main BLK to Limit Wiring Harness Tank Heater all ModelsTank Heater Relay FMD-4,-5,120V Dispensers only BRN/BLK from WHI from Main HarnessTank Heater Switch all Models Tank Heater Switch Remove and discard the transformer Disconnected from the main wiring harness Transformer all Models Q1 & MOV1 Controls Left Whipper Motor Q2 & MOV3 Controls Center Whipper MotorQ5 & MOV4 Controls Right Whipper Motor Q7 & MOV2 Controls Refill ValveSchematic Wiring Diagram FMD-1 BLKSchematic Wiring Diagram FMD-1A WHI-16Schematic 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 42672 42672 42672 42672 Schematic Wiring Diagram FMD DBC-3 With HOT Water Dispense Schematic Wiring Diagram Fmda DBC-3 With HOT Water Dispense 42672 42672 42672 42672 Schematic Wiring Diagram FMD-5A

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