Bunn service manual Schematic Wiring Diagram HC-2, & HC-3

Page 37

SCHEMATIC WIRING DIAGRAM HC-2, & HC-3

								GRN
		L1						L2 N
		ELECTROMECHANICAL THERMOSTAT CONFIGURATION
	used!		HEATER SW.
		BLK-16	BLU/BLK-16
		BLK-16

	be		THERMOSTAT		LIMIT			RED-16 (3-WIRE MODELS)
	be				THERMOSTAT
	MUST				THERMOSTAT	BLK-16	TANK HEATER
			BLU-16	BLK-16	BLK-16	BLK-16	TANK HEATER	WHI-16 (2-WIRE MODELS)
								WHI-16 (2-WIRE MODELS)

	Configuration	ELECTRONIC THERMOSTAT CONFIGURATION
			HEATER SW.	TAN
			TAN
					LIMIT
		BLK-16		BLK-16	THERMOSTAT		TANK HEATER	RED-16 (3-WIRE MODELS)
			ELECTRONIC		BLK-16	BLK-16	TANK HEATER	RED-16 (3-WIRE MODELS)
	One		ELECTRONIC		BLK-16	BLK-16		WHI-16 (2-WIRE MODELS)
			THERMOSTAT					WHI-16 (2-WIRE MODELS)
			THERMOSTAT					WHI
			ASSEMBLY					WHI
			ASSEMBLY

OVERFLOW SWITCH

TANK INLET

BLK

BLK

RED

RED

VIO

WHI

WHI/VIO

1 HOPPER

BLK

LIQUID

1

SOL

WHI/BLU

BLU

2

DELAY

2

LEVEL

WHI

3

3

BLK

BLK

BLK

BOARD

PNK-20

4

4

WHI/RED

5

PROBE

WHI/GRN

FLOURESCENT

6

WHI

WHI/GRN

7

LAMP

BLK

BLK 1

BLK

WHI

8

BALLAST

WHI

WHI

BLU

WHI

WHI

Components

WHI

DISPENSE

WHI

WHIPPER

HOPPER

WHI

WHI/RED

SOL

WHI

WHI/RED

M

WHI

WHI/RED

M

WHI/BLK

RUN/RINSE SWITCH

HC1

WHI/GRN

-2)

WHI

WHI

WHI

RIGHT DISPENSE

RIGHT WHIPPER

RIGHT HOPPER

HC

WHI/VIO

SOL

WHI

WHI/VIO

M

WHI

WHI/VIO

M

WHI/BLK

ON

WHI/VIO

WHI/VIO

Components

CENTER DISPENSE

CENTER WHIPPER

CENTER HOPPER

ELIMINATED

WHI/BLU

SOL

WHI

WHI/BLU

M

WHI

WHI/BLU

M

WHI/BLK

WHI/BLU

WHI/BLU

LEFT DISPENSE

LEFT WHIPPER

LEFT HOPPER

WHI/BRN

SOL

WHI

WHI/RED

M

WHI

WHI/RED

M

WHI/BLK

HC2 & HC3

COMPONENTS

RUN/RINSE SWITCH

WHI/GRN

COLD DRINK OPTION (LEFT ONLY)

WHI/GRN

WHI/BLK

WHI

4

WHI

SOL

WHI/BRN

WHI/BRN

JUMPER PLUG MUST BE

RED

(CENTER

WHI/RED

WHI/RED

USED WHEN COLD

WHI/RED

WHI/RED

RED

WHI/YEL

DRINK FEATURE NOT

1

RED

INSTALLED

HOT/COLD SWITCH

1

4

1

GRN/WHI

BLU

WHI

GRN/BLK

BLU

1

BLK

1

RED

BLK

BLK

STARTER

BLK

RED/WHI

RED/BLK

RED

1

BLK

1

WHI

DISPENSE

DISPENSE SWITCH

SWITCH

(RIGHT, MODELS HC-2 & HC-3)

BLK

ASSY.

1

RED/BLK

4

BLK

DISPENSE SWITCH

1

RED

4

(CENTER, MODEL HC-3 ONLY)

BLK

RED/WHI

120 VOLTS AC - 2 WIRE OR

4

1

120/208-240 VOLTS AC - 3 WIRE

DISPENSE SWITCH

SINGLE PHASE, 60 HZ

(LEFT, MODELS HC-2 & HC-3)

BLK

(ALSO HC-1 SWITCH)

RED

4

27593.0004B 2/97 © 1996 BUNN-O-MATIC CORPORATION

37	27591 031597

Image 37

Contents Serial # HC00025000 UP Bunn HC-2Introduction Warranty12368.0002 User Notices27620.0000 Electrical Requirements Initial SET-UPElectrical HOOK-UP Plumbing RequirementsAdjustments CleaningDispenser USE Cold Beverage SET-UP OptionalDraining the HOT Water Tank TroubleshootingHopper Dispense Rate of Product Problem Probable Cause Remedy TroubleshootingProblem Dripping from dispense tip Lime build-up Problem Probable CauseOn stainless steel surfaces can Ing in serious leaksTesting procedure. See Weak product Water temperature30 or Tip with a thermometerProbable Cause Remedy Troubleshooting ProblemComponent Access ServiceContents Auger Drive ComponentsIf voltage is present as described, proceed to #5 Auger Drive ComponentsWasher Auger Motor Locknut Dust Seal Shoulder Screw Hopper AssyRight HC-2 ServiceBallast Test ProcedureLocation Control Thermostat Remove temperature probe from the tankLocation Mechanical Thermostat Electronic Thermostat OptionalThermostat Terminals Control ThermostatDispense Switch Dispense SwitchFAN Test ProceduresSteam Collector #6-32 Screw Mixing Chamber Frother and Whipper MotorRing Pull the mixing chamber 2 out of the whipper chamberWhipper Motor Terminals Frother and Whipper MotorReconnect the eight pin connector to the hopper delay board Hopper Delay BoardDisconnect the wires from the switch termi- nals HOT/COLD Switch OptionalLamp Holder Lamp Replacement Refer to FigDoor Assy Service Level Control Board and Probe Level Control Board and Level ProbeLimit Thermostat Level Board TerminalsOverflow Protection Switch Overflow Protection SwitchRUN/RINSE Switch RUN/RINSE SwitchCold Water Solenoid Valve Solenoid Valve Cold Water OptionalSolenoid Valves Dispense Cold Water Solenoid TerminalsDisconnect the water line from the solenoid valve Solenoid Valves DispenseSolenoid Valve Inlet Tank Heater Solenoid Valve InletTank Heater Switch Refer to when reconnecting the wires to the tank heaterTank Heater Tank Heater Switch Terminals Tank Heater SwitchMODELSONLYcont Transformer 240V TWO WireSchematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3