Bunn F-20, F-15, F-35 service manual Control Thermostat, Tank Heater, Timer, Relay

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COMPONENT' REPLACEMENT INSTRUCTIONS

CAUTION: DISCONNECT COFFEE BREWER FROM POWER SOURCE PRIOR TO REMOVING ANY COM. PONENTS.

Access to electrical components is gained by removing front access panel.

CONTROL THERMOSTAT

1.To gain access, remove top lid via 4 screws and remove front panel.

2.Remove mounting screws and disconnect wires, remove old thermostat bulb by pulling firmly upward on the capillary.

TANK 3. On the new thermostat, slide the red capillary grommet to the red mark on the

LIDcapillary.

4.Insert the 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.

NOTE: If water tank is full of water, turn control thermostat knob clockwise to desired setting. Refer to

"Initial Operation Instructions" steps 6, 7 and 8. If water tank is not full of water, turn control thermostat knob fully counterclockwise until tank is filled.

TANK HEATER

1.To gain acicess, remove top lid via 4 screws.

2.Remove sprayhead and sprayhead nut from water tube below the hood.

3.Loosen compression fitting on air vent tube in hood.

4.Disconnect leads to tank heater terminals and limit thermostat terminal.

5.Remove thermostat bulb from tank lid assembly. Refer to "Control

Thermostat Replacement" step 2 above. Take care not to damage thermostat capillary or bulb.

6.Remove 8 nuts holding tank lid to tank and lift out tank lid.

7.Remove 2 nuts holding tank heater to tank lid and remove tank heater.

8.When replacing tank heater, be sure to use new copper washers. Nuts should be securely tightened to assure water proof seal.

NOTE: When replacing thermostat bulb in tank lid assembly, refer to "Control Thermostat Replacement" steps 3 and 4 above.

TIMER

1.To gain access, remove front panel.

2.Disconnect plug and socket connector and disconnect the 2 leads on the solenoid terminals.

3.Disconnect timer from bracket via 2 screws and remove.

RELAY

1.To gain access, remove front panel.

2.Disconnect plug and socket connector from harness plug and socket connector from timer.

3.Disconnect relay from bracket via 2 screws and remove.

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Contents Coffee Brewers Electrical Requirements Model F1532\..-t Startcontact,brew cycle Is depressed, but and water shut off valveIning Tank heater Solenoid ValveBe at least 2 minutes AndCheckmakesto see ifAny particles that may Receiving decanterConnected to Cold Water line Terminalsarebeing. used.Should Timer Control ThermostatTank Heater RelayValve Flow ValveSchematic Wiring Diagram F15 LliJParts ~~~--c