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

Page 38

SCHEMATIC WIRING DIAGRAM HCA-2, & HCA-3

GRN

L1

L2

ELECTROMECHANICAL THERMOSTAT CONFIGURATION

used!

HEATER SW.

BLK-16

BLU/BLK-16

be

THERMOSTAT

LIMIT

THERMOSTAT

MUST

BLK-16

TANK HEATER

WHI -16

BLU-16

BLK-16

BLK-16

Configuration

ELECTRONIC THERMOSTAT CONFIGURATION

HEATER SW.

TAN

TAN

LIMIT

BLK-16

THERMOSTAT

TANK HEATER

ELECTRONIC

BLK-16

BLK-16

BLK-16

WHI -16

One

THERMOSTAT

WHI

ASSEMBLY

OVERFLOW SWITCH

BLK

BLK

RED

RED

TANK INLET

WHI/VIO

1 HOPPER

WHI/BLU

1

VIO

SOL

WHI

2

DELAY

LIQUID

BLU

3

2

BLK

BLK

BLK

LEVEL

WHI

4

3

WHI/RED

BOARD

PNK-20

5

4

WHI/GRN

6

PROBE

WHI/GRN

7

WHI

WHI

8

1

RED

BLK

BLK

BLK

XFRMR

BLK

BLK

RED

FLOURESCENT

WHI

RED

WHI

BLU

LAMP

1

BLU

BALLAST

WHI

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

4

BLU/BLK

4

BLU

WHI

BLU

BLU

BLK

ORA/BLK

RED

1

ORA

1

RED

DISPENSE

RED

BLK

SWITCH

RED/WHI

ASSY.

RED/BLK

1

BLK

1

DISPENSE SWITCH

WHI

1

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

BLK

BLK

RED/BLK

4

RED

1

4			DISPENSE SWITCH
			(CENTER, MODEL HC-3 ONLY)		BLK
					BLK
					RED/WHI
	240 VOLTS A C			4
	240 VOLTS A C			1
	2 WIRE		DISPENSE SWITCH	1
	2 WIRE		DISPENSE SWITCH
	SINGLE PHASE,		(LEFT, MODELS HC-2 & HC-3)		BLK
	50 HZ		(ALSO HC-1 SWITCH)		RED
				4
				4

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

38	27591 031597

Image 38

Contents Bunn HC-2 Serial # HC00025000 UPWarranty Introduction27620.0000 User Notices12368.0002 Electrical HOOK-UP Initial SET-UPElectrical Requirements Plumbing RequirementsDispenser USE CleaningAdjustments Cold Beverage SET-UP OptionalHopper Dispense Rate of Product TroubleshootingDraining the HOT Water Tank Troubleshooting Problem Probable Cause RemedyProblem On stainless steel surfaces can Problem Probable CauseDripping from dispense tip Lime build-up Ing in serious leaks30 or Weak product Water temperatureTesting procedure. See Tip with a thermometerTroubleshooting Problem Probable Cause RemedyContents ServiceComponent Access Auger Drive ComponentsWasher Auger Motor Locknut Dust Seal Shoulder Screw Auger Drive ComponentsIf voltage is present as described, proceed to #5 Hopper AssyService Right HC-2Location Test ProcedureBallast Location Mechanical Thermostat Remove temperature probe from the tankControl Thermostat Electronic Thermostat OptionalControl Thermostat Thermostat TerminalsDispense Switch Dispense SwitchTest Procedures FANRing Frother and Whipper MotorSteam Collector #6-32 Screw Mixing Chamber Pull the mixing chamber 2 out of the whipper chamberFrother and Whipper Motor Whipper Motor TerminalsHopper Delay Board Reconnect the eight pin connector to the hopper delay boardHOT/COLD Switch Optional Disconnect the wires from the switch termi- nalsDoor Assy Lamp Replacement Refer to FigLamp Holder Service Level Control Board and Level Probe Level Control Board and ProbeLevel Board Terminals Limit ThermostatOverflow Protection Switch Overflow Protection SwitchRUN/RINSE Switch RUN/RINSE SwitchSolenoid Valve Cold Water Optional Cold Water Solenoid ValveCold Water Solenoid Terminals Solenoid Valves DispenseSolenoid Valve Inlet Solenoid Valves DispenseDisconnect the water line from the solenoid valve Solenoid Valve Inlet Tank HeaterTank Heater Refer to when reconnecting the wires to the tank heaterTank Heater Switch Tank Heater Switch Tank Heater Switch TerminalsTransformer 240V TWO Wire MODELSONLYcontSchematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3