Bunn STFA, SA service manual SERVICE cont LIMIT THERMOSTAT

Page 16

SERVICE (cont.)

SERVICE (cont.)

LIMIT THERMOSTAT

P1586

FIG. 4 LIMIT THERMOSTAT

Location:

The limit thermostat is located on the rear of tank assembly.

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 thermo- stat 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 thermo- stat.

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

4.Refer to FIG. 5 when reconnecting the wires.

BLK to Tank					BLK to BLU Lead from
Heater Switch					Control Thermostat

P1800

FIG. 5 LIMIT THERMOSTAT TERMINALS

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Contents POST OFFICE BOX SPRINGFIELD, ILLINOIS FAXBUNN S,SA ST,STA STF,STFAWARRANTY USER NOTICESUSER NOTICES Continued #00656.0000#00882.0000 #02763.0000 #02765.0000 #02769.0000ELECTRICAL REQUIREMENTS PLUMBING REQUIREMENTSElectrical Hook-Up Models S & SAINITIAL SET-UP 4A. Models S & SA4B. Models ST, STA 4C. Models STF & STFACLEANING Models ST, STF, STA & STFA ON/OFF SWITCHSTART SWITCH OPERATING CONTROLSTROUBLESHOOTING TROUBLESHOOTING cont PROBLEMPROBABLE CAUSE REMEDYTROUBLESHOOTING cont PROBLEM Dripping from sprayhead Beverage overflows dispenser cont Weak beverage Brewer is making unusal noises COMPONENT ACCESS SERVICEContents SERVICE cont CONTROL THERMOSTATSERVICE cont CONTROL THERMOSTAT cont SERVICE cont LIMIT THERMOSTAT ON/OFF SWITCH Models ST, STA, STF & STFA FIG. 8 SOLENOID START SWITCH Models ST, STA, STF & STFA SERVICE cont TANK HEATER SERVICE cont TANK HEATER Cont FIG. 14 BREW TIMER SERVICE cont BREW TIMER Early Modelscont DIGITAL BREW TIMER Late Models FIG. 16 DIGITAL BREW TIMERSERVICE cont DIGITAL BREW TIMER Late Modelscont LIQUID LEVEL CONTROL BOARD Models STF & STFA STFACont SERVICE cont TIMER RELAY Models STF & STFA SERVICE cont WARMER ELEMENTS SERVICE cont THERMAL CUT-OFFModels SA, STA & STFA Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251