Bunn Dual TF - page 27

Page 27

SERVICE (cont.)

LEVEL CONTROL BOARD AND LEVEL PROBE

(Electro/mechanical only) (cont.)

els and three wire 120/240 volt models.

b.) 200 to 240 volts ac for two wire 200 or 240 volt

models.

17. Disconnect the brewer from the power source.

If voltage is present as described, reinstall the probe,

the level control board and level probe are operating

properly.

If voltage is not present as described, check the pink

probe wire for continuity.

Removal and Replacement:

1. Remove all wires from the level control board.

2. Remove two #8-32 slotted head screws holding

level control board to component bracket.

3. Install the new level control board to the compo-

nent bracket. Make certain that the lockwashers

are between the level control board and the com-

ponent bracket.

4. Refer to the illustration below when reconnecting

the wires.

T1 VIO to Solenoid Coil

T2 BLU to Overflow Protection Switch

T3 WHI to Terminal Block (White Insert

on 120V Two Wire , 120/208V or 120/240V

Three Wire Brewers)

T3 RED to Terminal Block (Red Insert on

200V or 240V Brewers)

T4 PNK to Probe

Location:

The limit thermostat is located inside the hood

on the tank lid just to the left of the right tank heater.

Test Procedure:

1. Disconnect the brewer from the power supply.

2. Disconnect the black wires from the limit thermo-

stat.

3. Check continuity across the limit thermostat ter-

minals with an ohm meter

If continuity is present as described, reconnect the

black wires to the limit thermostat, the limit thermo-

stat is operating properly.

If continuity is not present as described, press the

reset button on the limit thermostat and repeat step

#3. After repeating step #3 no continuity is shown,

replace the limit thermostat.

Removal and Replacement:

1. Remove all wires from the limit thermostat termi-

nals.

2. Carefully remove the two #8-32 nuts securing the

limit thermostat to tank lid and remove limit ther-

mostat.

3. Carefully secure new limit thermostat to tank lid.

4. Refer to the illustrations below when reconnecting

the wires.

LIMIT THERMOSTAT

P789

P979

MINUTES

BUNN-O-MATIC

P/N 2620- 120 VAC

MINUTES

BUNN-O-MATIC

P/N 2620- 120 VAC

1.5

2.5

MINUTES

P/N 24486-0000 120 VAC

BUNN-O-MATIC