Operation; Ice Making Sequence Of Operation; Control Board Timers - Koolaire K Serie Manual De Instalación, Operación Y Mantenimiento

Ice Making Sequence of Operation

NOTE: The toggle switch must be in the
ICE position and the water curtain must be
closed before the ice machine will start.
Water Purge Cycle
The ice machine purges any remaining
water from the water trough down the
drain and the refrigeration compressor
starts.
Freeze Cycle
Prechill - The refrigeration system chills
the evaporator before water flow over the
evaporator starts. The water inlet valve
energizes during the pre-chill and remains
on until the Ice Thickness Float Switch is
satisfied.
Freeze - Water flowing across the
evaporator freezes and builds ice on the
evaporator. After a sheet of ice has formed,
the Harvest Float Switch signals the control
board to start a harvest cycle.
Part Number: 000014142 Rev 02 5/17
Section 3

Operation

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, the ice machine
starts another freeze cycle.
Full Bin Cycle
If the water curtain is held open by ice
cubes, the ice machine shuts off and starts
a 3-minute delay period. When the water
curtain closes, the ice machine starts a
new cycle at the water purge, provided the
3-minute delay period has expired.

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.
• The maximum freeze time is 60
minutes, at which time the control
board automatically initiates a harvest
sequence.
• The maximum harvest time is 3.5
minutes. The control board automatically
initiates a freeze sequence when these
times are exceeded.
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