Bunn service manual Schematic Wiring Diagram FMD-1, FMD-2, & FMD-3

Page 35

SCHEMATIC WIRING DIAGRAM FMD-1, FMD-2, & FMD-3

One Configuration MUST be used!

	FMD-1 Components
	FMD-2)
FMD-2 & FMD-3 Components	COMPONENTS ELIMINATED ON
	(CENTER

L1	GRN					L2 N

ELECTROMECHANICAL THERMOSTAT CONFIGURATION

HEATER SW.

BLK-16

BLK-16

LIMIT

THERMOSTAT

BLK-16

THERMOSTAT

TANK HEATER

RED-16 (3-WIRE MODELS)

BLK-16

WHI-16 (2-WIRE MODELS)

ELECTRONIC THERMOSTAT CONFIGURATION

HEATER SW

WHI/BRN

WHI/BRN

TAN

TAN

TANK HEATER

RED-16 (3-WIRE MODELS)

BLK-16

ELECTRONIC

BLK-16

BLK-16

BLK-16

WHI-16 (2-WIRE MODELS)

THERMOSTAT

WHI

WHI

ASSY.

WHI

GRN

PROBE

OVERFLOW SWITCH

TANK INLET

BLK

WHI/VIO

BLK

RED

RED

VIO

WHI

1 HOPPER

BLK

LIQUID

1

SOL

ORA

BLU

RUN/RINSE SWITCH

2

DELAY

2

GRY

LEVEL

WHI

3

BLK

BLK

BLK

BOARD

3

PNK

4

4

RED

5

GRY

FLUORESCENT

6

GRY

7

LAMP

BLK

BLK

WHI

BALLAST

8

WHI FAN

BLK

WHI

BLU

WHI

WHI

WHI

WHI

WHI

DISPENSE

WHIPPER

HOPPER

WHI/RED

SOL

WHI

WHI/RED

M

WHI

RED

M

GRY

			WHI		WHI						WHI
		RIGHT DISPENSE				RIGHT WHIPPER			RIGHT HOPPER
	WHI/VIO		SOL	WHI	WHI/VIO		M	WHI	WHI/VIO	M	GRY
WHI/VIO	WHI/VIO		SOL				M			M
WHI/VIO	WHI/VIO
		CENTER DISPENSE				CENTER WHIPPER			CENTER HOPPER
	ORA		SOL	WHI	ORA		M	WHI	ORA	M	GRY
ORA	ORA		SOL				M			M
ORA	ORA
		LEFT DISPENSE				LEFT WHIPPER				LEFT HOPPER
	TAN		SOL	WHI	RED		M	WHI	RED	M	GRY
			SOL				M			M
		COLD DRINK OPTION (LEFT ONLY)
WHI	4	WHI					SOL
TAN		TAN					SOL			JUMPER PLUG MUST BE
TAN		TAN							RED
RED		RED
RED		RED								USED WHEN COLD
RED		RED							RED	USED WHEN COLD
RED		RED				WHI/YEL			RED	DRINK FEATURE NOT
CHASSIS	1					WHI/YEL			RED	DRINK FEATURE NOT
CHASSIS	1			HOT/COLD SWITCH					RED	INSTALLED
				HOT/COLD SWITCH

1	4 1		WHI	BLU			WHI
			BLU	BLU	RED		BLK
			RED	1
			BLK			BLK
			RED/WHI			BLK	STARTER
GRN			RED/BLK			BLK	STARTER
GRN			DOOR
			DOOR		RED		BLK
		DISPENSE SWITCH	BLK		RED		BLK
		DISPENSE SWITCH					WHI
		(RIGHT, MODELS FMD-2 & FMD-3)					WHI
			RED/BLK
		DISPENSE SWITCH	BLK
		(CENTER, MODEL FMD-3 ONLY)	BLK
		(CENTER, MODEL FMD-3 ONLY)
120 VOLTS A C - 2 WIRE OR			RED/WHI
120/208-240 VOLTS AC - 3WIRE
SINGLE PHASE,	60 HZ	DISPENSE SWITCH	BLK
		(LEFT, MODELS FMD-2 & FMD-3)	BLK
		(LEFT, MODELS FMD-2 & FMD-3)
28341.0000G 7/98 © 1997 BUNN-O-MATIC CORPORATION		(ALSO FMD-1 SWITCH)

RED

35	28364 071598

Image 35

Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisFMD-2 FMD-3 BUNN-O-MATIC Commercial Product WarrantyFMD-2 00656.0000 00831.000028368.0000 26536.0002Initial SET-UP Plumbing HOOK-UP Initial Fill & HeatDraining the HOT Water Tank Remedy Problem Probable CauseStat for testing procedures. See TroubleshootingReplacement Control thermostat Cold Product overflows container Dispense switchDripping from dispense tip Lime build-up LeaksProbable Cause Remedy ProblemDisplay not lit Lamp Lamp Holder Starter Lamp Ballast Refer to Service Lamp, see page 23 for lamp replacementDispenser is making unusual Noises Water Supply Tank Heater Excess dust FanAuger Drive Components Component AccessContents Auger Drive Shaft Optional Bushing Ejector Elbow Hopper Lid Auger Wire Agitator Disc AssyIf voltage is present as described, proceed to #5 Off of the auger drive shaftRemove dust seal 18 from auger motor Auger Drive ComponentsHarness BLK to BLU From Door Interconnect Refer to when reconnecting the wiresBallast Control Thermostat Remove temperature probe from the tankLocation Dispense SwitchControl Thermostat Location Dispense SwitchFAN Washer Ring Nut Frother FANFrother and Whipper Motor Steam Collector Ring Mixing Chamber #8-32 Acorn NutFrother and Whipper Motor Whipper Motor Terminals P1451.40 Hopper Delay BoardDisconnect the wires from the switch termi- nals HOT/COLD Switch OptionalRemove the outside window and display graphic Lamp Replacement Refer to FigLamp Holder Door Assy Upper Panel Lamp Holders Lower PanelLevel Control Board and Level Probe As assemblyLamp Starter and Socket Level Control Board and Level Probe Limit Thermostat Limit ThermostatBoard Overflow Protection SwitchFrom Main Harness RINSE/RUN Switch Rinse /RUN SwitchCold Water Solenoid Valve Solenoid Valve Cold Water OptionalSolenoid Valves Dispense Cold Water Solenoid TerminalsSolenoid Valve Inlet Solenoid Valves DispenseTank Heater Solenoid Valve InletTank Heater Main Wiring Thermostat HarnessTank Heater Switch Tank Heater Switch Terminals Tank Heater SwitchSchematic Wiring Diagram FMD-1, FMD-2, & FMD-3 Schematic Wiring Diagram FMDA-1, FMDA-2, & FMDA-3