Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn ITB/ITCB SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB, 200V AC 2 WIRE, 230V AC 2 WIRE, Single Phase

Models: ITB/ITCB ICB/TWIN

1 30

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SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB

GRN/YEL

BLK

RED

BLK

RED

EMI

FILTER

BLK

RED

LIMIT

TANK HEATER

RED-14

THERMOSTAT

BLU-14

BLK-14

RED-14

BLK

BLK-14

3500W

FUNNEL SENSOR

J1-1

VIO

J1-2

WHI/VIO

COM

BLU-14

N.O.

BLK-14

WHI/VIO

DILUTION

RED

J17-1

SOL

DISPENSE

WHI/GRN

SOL

RED

WHI/BLU

REFILL

RED

SOL

J17-5

2BLK

J17-10	RED		RED
	RED		RED
J17-14
J15-1
		TRANSFORMER
		10VA
J15-5
J13-1		WHI
J13-1		BLK
		BLK	LEVEL
		PNK	LEVEL
		PNK	PROBE
			PROBE
J3-1		GRN
		GRN

J3-5

J3-8

1CONTROL PANEL ASSY

J2-1

	BREW	PROG L
	A	PROG L
J2-5	A
J2-5
	BREW	PROG R
	C	PROG R
	C
J2-10	HALF	FULL
	HALF	FULL
J2-15	BREW	ON/OFF	HALF
J2-15	B
			FULL
J2-20			ON/OFF
J2-20

J2-22					STATIC
J2-22		22			SHIELD
					SHIELD
J16-1	GRN


	WHI			MEMORY
	WHI
	RED
	RED			BOARD
J16-5	BLK
J16-5

J18-1			(Early Models only)

		200V AC 2 WIRE
J9-1		200V AC 2 WIRE
		230V AC 2 WIRE
		SINGLE PHASE

J9-7		36460.0001C 08/09 ©2004 BUNN-O-MATIC CORPORATION
J9-7

23	42461 0911809

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Bunn ITB/ITCB, ICB/TWIN manual SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB, 200V AC 2 WIRE, 230V AC 2 WIRE, Single Phase

Contents

BUNN-O-MATIC CORPORATION SERVICE & REPAIR MANUALITB/ITCB ICB/TWIN Infusion SeriesBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY INTRODUCTION CONTENTSReplace all protective shields or safety notices TROUBLESHOOTINGExercise extreme caution when servicing electrical equipment Follow recommended service proceduresRemove Level Probe and check TROUBLESHOOTING cont REFILL CIRCUIT PROBLEMPROBABLE CAUSE REMEDYInspect probe and tank assembly TROUBLESHOOTING cont HEATING CIRCUITPROBLEM Lime build up on temperatureNOTE Volume adjustments must be TROUBLESHOOTING cont BREWING CIRCUITPROBLEM disable the brew lockout featurePROBABLE CAUSE TROUBLESHOOTING contBREWING CIRCUIT cont PROBLEMREMEDY DIAGNOSTICSMESSAGE PROBABLE CAUSEFIG. 10-3 ICB TWIN COMPONENT ACCESS COMPONENT ACCESSFIG. 10-1 ICB COMPONENT ACCESS FIG. 10-2 ITB/ITCB COMPONENT ACCESSFaceplate Removal and Replacement Test ProceduresCheck for Power to board Removal and ReplacementTest Procedures MEMBRANE SWITCHFIG. 12-1 MEMBRANE SWITCH Location FIG. 12-2 MEMBRANE SWITCH CONTINUITYFIG. 13-2 EXPLODED VIEW BREW VALVE EARLY MODELS AND BYPASS VALVE ON ALL ICBsFIG. 13-1 EARLY BREW VALVE Location If no sound is heard as described, proceed to #4Removal and Replacement BREW VALVE LATE MODELS FIG. 14-1 LATE MODEL BREW VALVE LocationFIG. 14-2 LATE MODEL BREW VALVE Test ProceduresIf the sound is not heard as described, pro- ceed to # DisassemblyREFILL VALVES FIG. 15-1 REFILL VALVES Location If voltage is present, proceed to #CURRENT ICB & & ITB REFILL VALVESEARLY ICB EARLY ITCBTest Procedures TANK HEATERSFIG. 17-1 ICB TWIN TANK HEATERS Location FIG. 17-2 DV TANK HEATERSThe limit thermostat is located on the tank lid on the LIMIT THERMOSTATFIG. 18-1 LIMIT THERMOSTAT LocationTest Procedures TEMPERATURE PROBE FIG. 19-1 TEMPERATURE PROBE LocationFIG. 19-2 TEMPERATURE PROBE FIG. 19-3 TESTING TEMPERATURE PROBE Removal and Replacement CONTINUEDFIG. 20-2 CALIBRATION TEMPERATURE PROBE Removal and ReplacementCalibration FIG. 20-1 CALIBRATE TEMP PROBERemoval and Replacement VOLTAGE SELECTOR SWITCH FIG. 21-1 VOLTAGE SELECTOR SWITCH LocationTest Procedure FIG. 21-2 VOLTAGE SELECTOR SWITCH TERMINALSRemoval and Replacement POWER SWITCH FIG. 22-1 POWER SWITCH ICB SHOWN LocationFIG. 22-2 ROCKER SWITCH Test ProcedureSINGLE PHASE SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB200V AC 2 WIRE 230V AC 2 WIRE120/208V AC 3 WIRE SCHEMATIC WIRING DIAGRAMITCB-DV & ITCB-C-DV 120V AC 2 WIREITCB-DV & ITCB-C-DV WITH FACTORY SWEETENERSCHEMATIC WIRING DIAGRAM 120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAM ICB-DV120/208 OR 120/240 SCHEMATIC WIRING DIAGRAM ICB TWIN3 WIRE + GND SINGLE PHASE200V AC 2 WIRE 230V AC 2 WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAM iCBA, iCBB230 VOLTS AC SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM2 WIRE + GND SINGLE PHASE SINGLE & DUAL DILUTION MODELS AND MODELS w/OPTIONAL SWEETENER SCHEMATIC WIRING DIAGRAM ITB120V AC 2 WIRE + GROUND SINGLE PHASE