Whirlpool 8178501A Manual page 13

OPERATION
Water Dispensing
NORMAL FILL
Normal fill is when the customer presses the
fill pad or holds the fill button. While water is
being dispensed, the flowmeter will measure
the water dispensed and display the amount
on the user interface.
The following sequence occurs:
1. The user interface supplies 5 volts DC to
one side of the water pad switch.
2. The water pad switch is pushed closed.
3. The user interface receives back the 5
volts DC.
4. The user interface signals the core control
on P1-2.
5. The core control outputs a data signal to
the smart valve.
6. The smart valve then energizes the water
valve solenoid with 120 volts AC, and us-
ing the flowmeter, sends a signal for the
amount of water dispensed, to the user
interface display.
MEASURED FILL
Measured fill is where the user interface com-
mands the smart valve to dispense a specific
amount of water. The water is measured by
the flowmeter in the smart valve. The unit of
measure may be changed as desired at any
time that you are not dispensing water. Options
are ounces, liters and cups. The user interface
water switch may be used to start, pause or
resume measured fill.
The following sequence occurs:
1. The units of measure are selected.
2. The volume of water requested is en-
tered.
3. The water keypad is pressed or the water
dispenser activation pad is held closed.
4. The user interface receives the signal.
5. The user interface signals the smart
valve.
6. The smart valve then energizes the water
valve solenoid with 120 volts AC, and us-
ing the flowmeter, sends a signal for the
amount of water as it is dispensed, to the
user interface display. When the proper
volume has been reached, the smart valve
control de-energizes the water valve so-
lenoid.
Ice maker Fill
Using the flowmeter, the valve will fill the ap-
propriate volume of water when requested by
the ice maker, 4.4 ounces (130 ml) of water for
8 cube ice makers, and 2.9 ounces (86 ml) of
water for 5 cube ice makers. It is important to
note that because the ice maker is not time-
filled, it may take more or less time than the
7.5 seconds to fill. After receiving the 120 volt
AC signal from the ice maker, the smart valve
will fill the ice maker.
The flowmeter is used for both the ice maker
and the water dispenser with the water dis-
penser having priority over the ice maker fill. If
the water dispenser is operated during an ice
maker fill, the ice maker fill will be paused until
the dispenser operation has been completed.
The smart valve will hold the partial ice maker
fill volume in memory, and completes the fill
when the flowmeter is available.
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