Bunn TU3Q ON/OFF Switch, Refer to when reconnecting the wires Location, Switch terminals

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SERVICE (cont.)

ON/OFF SWITCH

FIG. 12 ON/OFF SWITCH

P2092.40

 

5. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

If voltage is not present as described, refer to the Wir- ing Diagrams and check the wiring harness.

6.Check for continuity across the center and end terminals of the top row when the switch is in the ÒONÓ position.

If continuity is present as described, replace the wires, the switch is operating properly.

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

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to FIG. 13 when reconnecting the wires.

Location:

The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel.

Test Procedure:

1.

Disconnect the brewer from the power source.

2.

Remove the black and white/violet wires from the

 

switch terminals.

3.

With a voltmeter, check the voltage across the

BLK to Power Cord

WHI/VIO to On/

Off Switch

WHI/VIO to Brew

Timer TL1

WHI/VIO to On/

Off Switch

WHI to Brew Timer TL2 or RED to Brew Timer TL2

black wire removed from the ON/OFF switch and

the white wire on the 100 and 120 volt two wire,

and red wire on the 230 volt two wire remaining

on the switch terminal.

4. Connect the brewer to the power source. The in-

dication must be:

a) 120 volts ac for two wire 120 volt models.

b) 230 volts ac for two wire 230 volt models.

c) 100 volts ac for two wire 100 volt models.

P1801

FIG.13 ON/OFF SWITCH TERMINALS

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10288 031500

 

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Contents Phone 217 529-6601 FAX 217 TU3QContents BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices #00831.0000 #00656.0000#03408.0002 #03409.0002 #03408.0000 #03536.0000 #03409.0000 Electrical Requirements Plumbing RequirementsElectrical Hook-Up Auto Sweetener SET-UP Initial SET-UPAuto Sweetener SET-UP Adjusting Brew VolumesCleaning Auto Sweetener CleaningOperating Controls TEA Brewing Troubleshooting Problem Probable CauseRemedy Problem TroubleshootingProbable Cause RemedyProblem Probable Cause Dripping from sprayhead Beverage overflows dispenser Brew TimerSyphon System Lime Build-up DispenserProblem Probable Cause Remedy Component Access ServiceTest Procedures Disconnect the brewer from the power source ServiceBrew Solenoid Valve Solenoid valveWiring Diagram and check the wiring harness Brew Timer Early ModelsIf voltage is as described, proceed to #7 Service Digital Brew Timer Late ModelsDigital Timer Wiring Control Thermostat Control ThermostatLimit Thermostat Limit ThermostatRefer to when reconnecting the wires Location ON/OFF SwitchSwitch terminals On the switch terminalStart Switch Start SwitchTank Heater Sweetener Solenoid Valve Optional OFF/SELECTOR Switch Volts AC 2 Wire Single Phase Schematic Wiring Diagram TU3QVolts AC Wire