Bunn Single Operating & Service Manual page 29

SERVICE (cont.)
LEVEL CONTROL BOARD AND LEVEL PROBE (Electro/
mechanical only)(cont.)
16. Move the probe's flat end away from the brewer
housing. The indication should again be
a.) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt models and three wire 120/240
volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt
models after a delay of approximately 1 second.
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 and lock-
washers holding level control board to component
bracket.
3. Install the new level control board to the component
bracket. Make certain that the lockwashers are
between the level control board and the component
bracket.
4. Refer to Fig. 15 when reconnecting the wires.
FIG. 15 LIQUID LEVEL CONTROL
Page 29
T4 PNK TO PROBE
T3 WHI to Terminal Block (White Insert
on 120V Two Wire, 120/28V or 120/240V
Three Wire Brewers)
T3 RED to Terminal Block (Red Insert on
200V or 240V Brewers)
T2 BLU from Thermostat
T1 VIO to Solenoid Coil
BOARD TERMINALS
P832
27038 030901