Operation; Ice Making Sequence Of Operation; Water Purge Cycle; Freeze Cycle - Manitowoc S3000 Installation, Operation And Maintenance Manual

Ice Making Sequence of Operation

NOTE: The toggle switch must be in the ice
position and the water curtain/ice dampers
must be in place on the evaporator before
the ice machine will start.

Water Purge Cycle

The ice machine purges any remaining
water from the water trough down the
drain.

Freeze Cycle

Water flows across the evaporator and the
refrigeration system chills the evaporator.
Ice builds on the evaporator and the freeze
cycle continues until the ice thickness
probe senses a sheet of ice has formed.
The ice thickness probe signals the control
board to start a harvest.

Harvest Cycle

Any remaining water is purged down
the drain as refrigerant gas warms the
evaporator. When the evaporator warms,
the sheet of cubes slides off the evaporator
and into the storage bin. If all cubes fall
clear of the water curtain (or ice damper)
the ice machine starts another freeze cycle.

OFF Cycle

If the water curtain or ice damper are held
open by ice cubes the ice machine shuts
off. When the water curtain or ice damper
closes, the ice machine starts a new cycle at
the water purge.
Part Number 000017556 Rev 00 9/22
Section 3

Operation

Control Board Timers

The control board has the following
non‑adjustable timers:
• The ice machine is locked into the freeze
cycle for 6 minutes before a harvest cycle
can be initiated. Freeze lock is bypassed
after moving the toggle switch from OFF
to ICE position for the first cycle only.
• The maximum freeze time is 60
minutes at which time the control
board automatically initiates a harvest
sequence.
• The maximum harvest time is 7 minutes
for multiple evaporator model. The
control board automatically initiates a
freeze sequence when these times are
exceeded.
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