– 16 –
Tank
Sensor and Gasket
Control 5 VDC to Sensor
The routing of the DC wiring from the tank is very
important. The 3 tape points on the tank keep the
DC wiring perpendicular to the AC harness wiring
running down across the front of the tank. (See tank
photo.)
Note: The dispenser tank, sensor with wire harness,
and gasket are only available as a complete
assembly (part # WD35X10058). They are shipped
with a new dispenser tank retaining collar.
Detergent Level Sensor Strip Circuit
BRN/YELLOW RED
DETERGENT
SENSOR
J4-3
J4-1
Tape Point
Tape Point
Tape Point
Detergent Level Sensor
The SmartDispense
TM
detergent level sensor consists
of a single level detection continuity sensor and
includes the following components:
a grommet seal
a low detergent LED indicator light
a wire harness.
When the detergent in the reservoir drops below
the continuity sensor, a signal is sent to the control
board and the low detergent LED indicator light is
turned on. The light indicates 3 to 7 wash cycles left
before the detergent reservoir is completely empty.
Note: The Low Detergent LED may look like it is
illuminated when in fact it is not. An indicator that is
illuminated will be a bright red.
Note: If the SmartDispense
TM
system is not being
used, the low detergent light can be turned off (or
on) by pressing the Added Heat pad 5 times within
3 seconds. There will be 3 audible beeps when the
light goes off.
The sensor is similar to the type used in several
automotive applications such as the windshield
wiper fl uid reservoir.
The control takes a reading of the detergent level at
power up (when power is restored from an outage)
and each time the door is closed and latched.
The control outputs a pulsing 5 VDC analog signal
to the sensor and monitors the return voltage.
Changes in the quantity of detergent in the tank
change the amount of current drawn by the sensor.
•
•
•
LOW DETERGENT
SmartDispense
S
ENSING
W
ASHING
D
RYING
S
ANITIZED
C
LEAN
Light will
turn on
when time
to refill
