Ice Maker - Viking VCBB536 Service Manual

Service Diagnostics and Procedures–Disassembly
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power to unit using power
switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure
correct earth ground and polarization. After servicing, reconnect power using power switch.

Ice Maker

(shown here with cover off)
The unit uses an ice maker that consists of a mold
heater, thermostat, motor, and wire harness. The ice
maker always starts from and stops at the "park"
position. In the park position (the ejector blades
are pointing horizontally towards the back of the
ice maker). Just before reaching the park, position
the mold is filled with water. At the park position
all electrical components are de-energized, even
though the shut-off arm is down, and the ice maker
is ready for the next freeze cycle. The ice maker
takes from 30 minutes to one hour to freeze the
water. The primary time factors are the temperature
in the freezer and the amount of airflow around the
ice maker. Colder freezer settings and free air space
around the ice maker to let air circulate will help
make ice faster. After the ice forms, the ice maker
continues to wait until it reaches 15˚F before it
starts the harvest cycle. This ensures that the ice
is solid in all the cavities. At 15ºF the thermostat
closes, the mold heater turns on,
and the ejector blades rotate up and forward
until they stall out against the ice. The motor is
designed to stall out and is geared to generate
a lot of pressure. This minimizes the amount of
melting needed to extract the ice. As soon as the
ice is loose enough to move, the ejector pushes the
ice out of the mold during the second half of the
first revolution. During the second revolution, the
ejector pushes the ice into the bucket.
© 2009 Viking Preferred Service
WARNING
Just before the ejector completes the second
revolution, the ice maker turns the water valve on
for approximately 7 seconds and refills the mold
with approximately 4 ounces of water and the
freezing cycle is ready to begin again.
To access the ice maker, open the freezer door,
remove bottom cover and the ice maker is
accessible.
To access module, motor, and support assembly
loosen screws in module access ports, disconnect
shutoff arm, disconnect wiring harness and remove
mold from support assembly.
Support Screws
To access module and heater assembly, remove
three screws on front of module and remove
support assembly.
Module
Wiring Harness
Shutoff Arm
47