Service manual

Page 26
Location:
The overflow protection switch is located inside
the hood on the left side of the tank inside the copper
overflow cup.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Remove the wire nuts connecting the red wires
from the overflow protection switch to the wires to
the DBC controller.
3. Check for continuity across the overflow protec-
tion switch red wires only until the plastic float is
raised and check that continuity returns when the
plastic float is again lowered.
If continuity is present as described, reconnect the red
wires to the red wire from the DBC controller J3-11
and the black wire from DBC controller J3-12.
If continuity is not present as described, replace the
overflow protection switch.
Removal and Replacement:
1. Disconnect the red leads from the overflow pro-
tection switch at the wire nuts.
2. Remove the nut beneath the copper overflow cup.
3. Remove the entire switch assembly from the cup.
4. Place the new switch assembly into the cup, wires
first. Make sure that the gasket is in place around
the threaded switch stem.
NOTE - The magnets must be at the top of float and
there must be NO adjusting washers installed for the
overflow protection switch to operate properly.
5. Install the nut beneath the copper overflow cup. Be
sure not to overtighten.
6. Refer to Fig. 23 when reconnecting wires.
P795
OVERFLOW PROTECTION SWITCH
SERVICE (cont.)
FIG. 22 OVERFLOW PROTECTION SWITCH
P2232
FIG. 23 OVERFLOW PROTECTION SWITCH
LEADS
32248 100500
RED to RED Lead to
DBC Controller J3-11
RED to BLK Lead to
DBC Controller J3-12