Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn ITB/ITCB manual VOLTAGE SELECTOR SWITCH -1 VOLTAGE SELECTOR SWITCH Location, Test Procedure

Models: ITB/ITCB ICB/TWIN

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VOLTAGE SELECTOR SWITCH

FIG. 21-1 VOLTAGE SELECTOR SWITCH

Location:

The voltage selector switch is located on the component mounting bracket on the base plate.

Test Procedure:

1.Disconnect the brewer from the power source.

2.Disconnect the wires from the selector switch. With the selector switch in the 120V position, check for continuity between the two right terminals of the switch.

3.With the selector switch in the 120/208-240V position, check for continuity between the two left terminals.

If continuity is not present as described, replace the switch.

Removal and Replacement:

1.Disconnect the brewer from the power source.

2.Disconnect the three wires from the selector switch.

3.Remove the switch mounting nut from the under side of component mounting bracket; remove switch from bracket.

4.Install new switch in component mounting bracket and secure with mounting nut.

FIG. 21-2 VOLTAGE SELECTOR

SWITCH TERMINALS

21	42461 0911809

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Bunn ITB/ITCB manual VOLTAGE SELECTOR SWITCH -1 VOLTAGE SELECTOR SWITCH Location, Test Procedure, Removal and Replacement

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, iCBBSCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM 2 WIRE + GND SINGLE PHASE230 VOLTS AC SCHEMATIC WIRING DIAGRAM ITB 120V AC 2 WIRE + GROUND SINGLE PHASESINGLE & DUAL DILUTION MODELS AND MODELS w/OPTIONAL SWEETENER