Manitowoc Indigo Series Technician's Handbook page 172

Prechill & Freeze Cycle Operation
The water inlet valve energizes and de-energizes in
conjunction with the water level probe located in the
water trough.
• The water inlet valve is ON when there is no water
in contact with the water level probes.
• The water inlet valve turns OFF after water
contacts the water level probes for 3 continuous
seconds.
• The water inlet valve can cycle ON and OFF once
in the prechill and up to two times in the freeze
cycle.
• Maximum fill time is 12.5 minutes for single
evaporator machines.
The water inlet valve energizes in the Prechill cycle
and will de-energize if water touches the high level
probe (in most instances the water trough can't fill in
the prechill cycle and the water inlet valve will remain
energized into the freeze cycle). The water inlet valve
will remain energized until water contacts the high
water probe. The water inlet valve will cycle ON, and
then OFF one more time to refill the water trough. The
water inlet valve is now OFF for the duration of the
freeze cycle.
172 Part Number STH025 8/12