Bunn 41722.0000A manual Limit Thermostat, Remove all wires from limit thermostat termi- nals

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SERVICE (cont.)

LIMIT THERMOSTAT

FIG. 12-1 LIMIT THERMOSTAT

Location:

The limit thermostat is located inside the rear of the hood on the tank lid.

Test Procedures:

1.Disconnect the brewer from the power source.

2.Disconnect the blue and black wires from the limit thermostat.

3.Check for continuity across the limit thermostat terminals with a ohmmeter.

If continuity is present as described, the limit thermostat is operating properly.

If continuity is not present as described, replace the limit thermostat.

Removal and Replacement:

1.Remove all wires from limit thermostat termi- nals.

2.Carefully slide the limit thermostat out from under the retaining clip and remove limit thermostat.

3.Carefully slide the new limit thermostat into the retaining clip.

4.Refer to the schematics when reconnecting the wires.

to Tank

 

 

 

Lead from

 

 

 

Heater Switch

 

Control Thermostat

 

 

 

 

 

 

 

 

 

 

FIG. 12-2 LIMIT THERMOSTAT TERMINALS

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41722 070209

 

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Contents TB3/TB6 Series Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Probable Cause Remedy Brew cycle will not start No waterTo the brewer Problem Brew cycle will not start Water is not hotProbable Cause Control Thermostat Tank HeaterInconsistent beverage level Surfaces can initiate corrosiveReactions resulting in serious LeaksRefer to Service Timer for test- ing procedures Spitting or excessive steaming Dripping from sprayheadBeverage overflows dispenser Dry coffee grounds remain Funnel Brewer is making unusal noisesPlumbing Lines Water Supply Problem Probable Cause Remedy Brewer is making unusal noises Tank HeaterCont Tank heater Component Access Control ThermostatLocation Control thermostat is located in the hood Disconnect the control thermostat wires Adjust the control thermostat as requiredRemove all wires from limit thermostat termi- nals Limit ThermostatDisconnect the brewer from the power supply Tank Heater1680W-120V 1680W-100V 1680W-230V 29.0 33.7 Lighted ON/OFF Switch TB3/TB3Q Refer to -2 when reconnecting the wiresOrange light Switch is located on the front control panel Through four when the switch is in the oposite PositionSwitch If continuity is present as described, replace the wiresStart Switches 37080.0001to T. StatInlet Valves BREW/DILUTION Timer TB3 & TB6 BREW/DILUTION Timer Triacs Triacs TH-1/MV-1 Brew solenoid TH-2/MV-2 Dilution solenoidDigital Brew Timer TB3Q & TB6Q Terminals ½ batch connectorWhite Red Neutral L2 Digital Timer Triacs Triacs MV-2 Brew solenoid output MV-1 LineSchematic Wiring Diagram TB3Q Volts AC Wire Single PhaseSchematic Wiring Diagram TB3, TB3B, TB3-LP Schematic Wiring Diagram TB3Q Schematic Wiring Diagram TB3Q W/SWEETENER & Empty BAG Detect Schematic Wiring Diagram TB6 Schematic Wiring Diagram TB6Q