Bunn STFA, SA service manual SERVICE cont CONTROL THERMOSTAT cont

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SERVICE (cont.)

SERVICE (cont.)

CONTROL THERMOSTAT (cont.)

Removal and Replacement:

1.Remove wires from control thermostat leads.

2.Remove the thermostat capillary bulb by firmly pulling-up on the capillary at the tank lid. This will disengage the grommet from the tank lid.

3.Models S & SA: Remove the two #8-32 screws securing control thermostat bracket mounted inside the rear inspection panel.

Models ST, STA, STF & STFA: Remove the one #8-32 screw securing the control thermostat to the component bracket in the front inspection panel.

4.Slide the grommet to the line 4.5" above the bulb on the new capillary tube.

5.Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid.

6.Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical posi- tion.

NOTE - The capillary tube must be clear of any electri- cal termination and not kinked.

7.Models S & SA: Using two #8-32 screws secure the control thermostat inside the rear inspection panel.

Models ST, STA, STF & STFA: Using one #8-32 screw secure the control thermostat to the com- ponent bracket inside the front inspection panel.

8.Refer to FIG. 3 when reconnecting the wires.

9.Adjust the control thermostat as required.

BLU to Limit Thermostat

BLK to Tank Heater

F

F

O

 

BUNN

HI

P2182

FIG. 3 CONTROL THERMOSTAT TERMINALS

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29251 052500

 

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Contents ST,STA STF,STFA POST OFFICE BOX SPRINGFIELD, ILLINOISFAX BUNN S,SAUSER NOTICES WARRANTY#02763.0000 #02765.0000 #02769.0000 USER NOTICES Continued#00656.0000 #00882.0000Models S & SA ELECTRICAL REQUIREMENTSPLUMBING REQUIREMENTS Electrical Hook-Up4C. Models STF & STFA INITIAL SET-UP4A. Models S & SA 4B. Models ST, STAOPERATING CONTROLS CLEANINGModels ST, STF, STA & STFA ON/OFF SWITCH START SWITCHTROUBLESHOOTING REMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSETROUBLESHOOTING cont PROBLEM Dripping from sprayhead Beverage overflows dispenser cont Weak beverage Brewer is making unusal noises SERVICE COMPONENT ACCESSContents CONTROL THERMOSTAT SERVICE contSERVICE 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 FIG. 16 DIGITAL BREW TIMER DIGITAL BREW TIMER Late ModelsSERVICE 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 29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page29251 Page
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