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Bunn ITB/ITCB, ICB/TWIN manual SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM, Volts Ac

Models: ITB/ITCB ICB/TWIN

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SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM

L1 L2

GRN/YEL

BRN

SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM

BLOCK

BLU

								GRN
								BLK	RED
							Chassis Ground		EMI
									FILTER
								BLK-18
								BLK-14
						LIMIT
						THERMOSTAT	BLU-14	TANK HEATER
						BLU-14		TANK HEATER
						BLU-14		RED-14
				LEFT		LIMIT
			FUNNEL SENSOR			LIMIT
		VIO	FUNNEL SENSOR			THERMOSTAT
	J20-1		1	3		THERMOSTAT	BLU-14	TANK HEATER
	J20-1		1	3		BLU-14		TANK HEATER
						BLU-14		RED-14
	J20-3	WHI/VIO
	J20-3							LEFT
				RIGHT				LEFT
				RIGHT				BYPASS	RED
		YEL	FUNNEL SENSOR				SOL	BYPASS	RED
	J21-1		1	3			SOL
			1	3		RIGHT


#	J21-3	WHI/YEL				DISPENSE			RED
#	J21-3	BLU-14				SOL
/	COM	BLU-14
.	COM	BLK-14						LEFT
.	N.O.	BLK-14						LEFT
4	N.O.	WHI/RED						DISPENSE	RED
2	J17-1						SOL	DISPENSE
2	J17-1						SOL
/		ORN
,		WHI/GRN						REFILL	RED
0								REFILL	RED
#		WHI/BLU						SOL
#	J17-5	WHI/BLU
"	J17-5	BLU			SOL	RIGHT
"		BLU				RIGHT
/		BLU/BLK				FUNNEL LOCK
/		BLU/BLK				FUNNEL LOCK		RIGHT
!		BLK				(Optional)		RIGHT	RED
2		BLK					SOL	BYPASS	RED
$	J17-10	GRY					SOL
		GRY							RED
		RED
		RED

			BRN/BLK					SOL		LEFT
			BRN/BLK							LEFT
J17-14			BRN/WHI							FUNNEL LOCK
J17-14			BRN/WHI							FUNNEL LOCK
J15-1										(Optional)
										(Optional)

TRANSFORMER

10VA

J15-5

J13-1	WHI
J13-1	BLK
	BLK	LEVEL
		LEVEL
		PROBE
J3-1	PNK	GRN
J3-1

		t
J3-5
			CONTROL PANEL ASSY
J3-8		1		RIGHT	RIGHT
		1		RIGHT	RIGHT
J2-1				FULL	HALF
J2-1
				RIGHT	RIGHT
				BREW	ON/OFF
J2-5				C
J2-5
				RIGHT	RIGHT
				BREW	PROG
				B
J2-10				PROG	RIGHT
				“Control”	BREW
					A
J2-15			LEFT	PROG	PROG
J2-15			ON/OFF	“Digital”	“Brewer”
			ON/OFF	“Digital”	“Brewer”
			LEFT
			FULL	LEFT	LEFT
				BREW	PROG
J2-20			LEFT	C
J2-20			HALF
			HALF		LEFT
J2-22				LEFT	LEFT
J2-22				LEFT	BREW
			RIGHT	ON/OFF	BREW
		22	RIGHT	ON/OFF	B
J16-1	GRN		ON/OFF		B
	GRN		ON/OFF
	WHI
	WHI	MEMORY	RIGHT		LEFT
				LEFT	LEFT
				LEFT	BREW
	RED	BOARD	FULL	FULL	BREW
	RED	BOARD	FULL	FULL	A
J16-5	BLK				A
	BLK		RIGHT


		(Early Models only)	HALF		LEFT
		(Early Models only)			HALF
					HALF

230 VOLTS AC

STATIC SHIELD

2 WIRE + GND SINGLE PHASE

37299.0004A 12/08 ©2008 BUNN-O-MATIC CORPORATION
29	42461 0911809
29

Image 29

Bunn ITB/ITCB, ICB/TWIN manual SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM, Volts Ac, Wire + Gnd Single Phase

Contents

ITB/ITCB ICB/TWIN SERVICE & REPAIR MANUALInfusion Series BUNN-O-MATIC CORPORATIONBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY INTRODUCTION CONTENTSExercise extreme caution when servicing electrical equipment TROUBLESHOOTINGFollow recommended service procedures Replace all protective shields or safety noticesPROBABLE CAUSE TROUBLESHOOTING cont REFILL CIRCUIT PROBLEMREMEDY Remove Level Probe and checkPROBLEM TROUBLESHOOTING cont HEATING CIRCUITLime build up on temperature Inspect probe and tank assemblyPROBLEM TROUBLESHOOTING cont BREWING CIRCUITdisable the brew lockout feature NOTE Volume adjustments must beBREWING CIRCUIT cont TROUBLESHOOTING contPROBLEM PROBABLE CAUSEMESSAGE DIAGNOSTICSPROBABLE CAUSE REMEDYFIG. 10-1 ICB COMPONENT ACCESS COMPONENT ACCESSFIG. 10-2 ITB/ITCB COMPONENT ACCESS FIG. 10-3 ICB TWIN COMPONENT ACCESSCheck for Power to board Test ProceduresRemoval and Replacement Faceplate Removal and ReplacementFIG. 12-1 MEMBRANE SWITCH Location MEMBRANE SWITCHFIG. 12-2 MEMBRANE SWITCH CONTINUITY Test ProceduresFIG. 13-1 EARLY BREW VALVE Location BREW VALVE EARLY MODELS AND BYPASS VALVE ON ALL ICBsIf no sound is heard as described, proceed to #4 FIG. 13-2 EXPLODED VIEWFIG. 14-2 LATE MODEL BREW VALVE BREW VALVE LATE MODELS FIG. 14-1 LATE MODEL BREW VALVE LocationTest Procedures Removal and ReplacementREFILL VALVES FIG. 15-1 REFILL VALVES Location DisassemblyIf voltage is present, proceed to # If the sound is not heard as described, pro- ceed to #EARLY ICB REFILL VALVESEARLY ITCB CURRENT ICB & & ITBFIG. 17-1 ICB TWIN TANK HEATERS Location TANK HEATERSFIG. 17-2 DV TANK HEATERS Test ProceduresFIG. 18-1 LIMIT THERMOSTAT LIMIT THERMOSTATLocation The limit thermostat is located on the tank lid on theFIG. 19-2 TEMPERATURE PROBE FIG. 19-3 TESTING TEMPERATURE PROBE TEMPERATURE PROBE FIG. 19-1 TEMPERATURE PROBE LocationRemoval and Replacement CONTINUED Test ProceduresCalibration TEMPERATURE PROBE Removal and ReplacementFIG. 20-1 CALIBRATE TEMP PROBE FIG. 20-2 CALIBRATIONTest Procedure VOLTAGE SELECTOR SWITCH FIG. 21-1 VOLTAGE SELECTOR SWITCH LocationFIG. 21-2 VOLTAGE SELECTOR SWITCH TERMINALS Removal and ReplacementFIG. 22-2 ROCKER SWITCH POWER SWITCH FIG. 22-1 POWER SWITCH ICB SHOWN LocationTest Procedure Removal and Replacement200V AC 2 WIRE SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB230V AC 2 WIRE SINGLE PHASEITCB-DV & ITCB-C-DV SCHEMATIC WIRING DIAGRAM120V AC 2 WIRE 120/208V AC 3 WIRESCHEMATIC WIRING DIAGRAM WITH FACTORY SWEETENER120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE ITCB-DV & ITCB-C-DV120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAM ICB-DV3 WIRE + GND SCHEMATIC WIRING DIAGRAM ICB TWINSINGLE PHASE 120/208 OR 120/240200V 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