Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn ICB/TWIN POWER SWITCH -1 POWER SWITCH ICB SHOWN Location, 2 ROCKER SWITCH, Test Procedure

Models: ITB/ITCB ICB/TWIN

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POWER SWITCH

FIG. 22-1 POWER SWITCH (ICB SHOWN)

Location:

The power switch is located on the lower right side of the trunk (ICB) or lower rear panel (ITCB).

Test Procedure:

Removal and Replacement:

1.Disconnect the brewer from the power source.

2.Disconnect the wires from the power switch.

3.Remove the switch mounting screws from the left side of trunk.

4.Install new switch in trunk with the two 6-32 x ¼˝ mounting screws.

FIG. 22-2 ROCKER SWITCH

1.Disconnect the brewer from the power source.

2.Disconnect the wires from the power switch. With the switch in the ON position, check for continuity between the upper and lower terminals on each side of the switch.

There should be continuity between the two left ter-

minals and between the two right terminals when ON,FIG. 22-3 TOGGLE SWITCH no continuity when OFF.

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

22	42461 0911809

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Bunn ICB/TWIN POWER SWITCH -1 POWER SWITCH ICB SHOWN Location, 2 ROCKER SWITCH, Test Procedure, Removal and Replacement

Contents

Infusion Series SERVICE & REPAIR MANUALITB/ITCB ICB/TWIN BUNN-O-MATIC CORPORATIONBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY CONTENTS INTRODUCTIONFollow recommended service procedures TROUBLESHOOTINGExercise extreme caution when servicing electrical equipment Replace all protective shields or safety noticesREMEDY TROUBLESHOOTING cont REFILL CIRCUIT PROBLEMPROBABLE CAUSE Remove Level Probe and checkLime build up on temperature TROUBLESHOOTING cont HEATING CIRCUITPROBLEM Inspect probe and tank assemblydisable the brew lockout feature TROUBLESHOOTING cont BREWING CIRCUITPROBLEM NOTE Volume adjustments must bePROBLEM TROUBLESHOOTING contBREWING CIRCUIT cont PROBABLE CAUSEPROBABLE CAUSE DIAGNOSTICSMESSAGE REMEDYFIG. 10-2 ITB/ITCB COMPONENT ACCESS COMPONENT ACCESSFIG. 10-1 ICB COMPONENT ACCESS FIG. 10-3 ICB TWIN COMPONENT ACCESSRemoval and Replacement Test ProceduresCheck for Power to board Faceplate Removal and ReplacementFIG. 12-2 MEMBRANE SWITCH CONTINUITY MEMBRANE SWITCHFIG. 12-1 MEMBRANE SWITCH Location Test ProceduresIf no sound is heard as described, proceed to #4 BREW VALVE EARLY MODELS AND BYPASS VALVE ON ALL ICBsFIG. 13-1 EARLY BREW VALVE Location FIG. 13-2 EXPLODED VIEWTest Procedures BREW VALVE LATE MODELS FIG. 14-1 LATE MODEL BREW VALVE LocationFIG. 14-2 LATE MODEL BREW VALVE Removal and ReplacementIf voltage is present, proceed to # DisassemblyREFILL VALVES FIG. 15-1 REFILL VALVES Location If the sound is not heard as described, pro- ceed to #EARLY ITCB REFILL VALVESEARLY ICB CURRENT ICB & & ITBFIG. 17-2 DV TANK HEATERS TANK HEATERSFIG. 17-1 ICB TWIN TANK HEATERS Location Test ProceduresLocation LIMIT THERMOSTATFIG. 18-1 LIMIT THERMOSTAT The limit thermostat is located on the tank lid on theRemoval and Replacement CONTINUED TEMPERATURE PROBE FIG. 19-1 TEMPERATURE PROBE LocationFIG. 19-2 TEMPERATURE PROBE FIG. 19-3 TESTING TEMPERATURE PROBE Test ProceduresFIG. 20-1 CALIBRATE TEMP PROBE TEMPERATURE PROBE Removal and ReplacementCalibration FIG. 20-2 CALIBRATIONFIG. 21-2 VOLTAGE SELECTOR SWITCH TERMINALS VOLTAGE SELECTOR SWITCH FIG. 21-1 VOLTAGE SELECTOR SWITCH LocationTest Procedure Removal and ReplacementTest Procedure POWER SWITCH FIG. 22-1 POWER SWITCH ICB SHOWN LocationFIG. 22-2 ROCKER SWITCH Removal and Replacement230V AC 2 WIRE SCHEMATIC WIRING DIAGRAM iTCBA, iTCBB200V AC 2 WIRE SINGLE PHASE120V AC 2 WIRE SCHEMATIC WIRING DIAGRAMITCB-DV & ITCB-C-DV 120/208V AC 3 WIRE120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE WITH FACTORY SWEETENERSCHEMATIC WIRING DIAGRAM ITCB-DV & ITCB-C-DVSCHEMATIC WIRING DIAGRAM ICB-DV 120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASESINGLE PHASE SCHEMATIC WIRING DIAGRAM ICB TWIN3 WIRE + GND 120/208 OR 120/240SCHEMATIC WIRING DIAGRAM iCBA, iCBB 200V AC 2 WIRE 230V AC 2 WIRE SINGLE PHASE2 WIRE + GND SINGLE PHASE SCHEMATIC WIRING DIAGRAM ICB TWIN 230V Chassis Ground TERM230 VOLTS AC 120V AC 2 WIRE + GROUND SINGLE PHASE SCHEMATIC WIRING DIAGRAM ITBSINGLE & DUAL DILUTION MODELS AND MODELS w/OPTIONAL SWEETENER