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17
Operation time
It takes about 20-35 minutes to produce a batch of 24 ice cubes. The length of one
cycle of the ice maker (ice production and ice removal) differs depending upon the
cleanness of the ice maker, the surrounding temperature, and the temperature of the
water supplied to the ice maker. It takes about 10-12 hours to fill the empty ice
container with ice.
Ice production
The ice production process largely consists of two cycles: ice production and ice
removal. 24 pieces of ice are produced with each cycle of ice production and ice
removal.
When water is sprayed on to the surface of the frozen ice-forming mold, the ice
production cycle is started. When ice is removed and water is supplied to the ice
maker, the ice removal cycle is started. The time taken for both cycles together is
about 20-35 minutes.
Ice production cycle
As the ice production cycle progresses, the compressor exhausts the refrigerant, the
fan motor circulates the air, and the pump motor circulates water. When the surface of
the ice-forming mold absorbs the heat from the water, the heat moves to the part to
which the fan supplies water. The heat is transferred to the air and the heated air is
removed from the ice maker. At the same time, ice is produced on the surface of the
ice-forming mold (at the upper end of the ice maker). When the surface of the ice-
forming mold has sufficiently cooled, the ice production cycle stops and ice removal is
started by the program installed in the ice maker.
Ice removal cycle
The compressor works during the progression of the ice removal cycle, but the pump
motor and fan motor are stopped. The hot gas valve and water supply valve work.
When the two valves are opened and the frozen surfaces are heated, ice drops down
into the container.
Then the ice removal cycle is stopped and the ice production cycle is started again by
the program installed in the ice maker.
How the ice maker uses water
The ice maker starts its work with the fixed quantity that has been fed into the water
container. When water is sprayed on to the surface of the ice-forming mold, the water
not containing mineral impurities freezes and attaches to the ice-forming mold. The
water containing impurities drops down into the water container. During the
progression of the ice production cycle, the mineral impurity level in the water in the
water container rises.
During the progression of the ice removal cycle, water is fed to the ice maker, thereby
diluting the water in the container, and washes a part of the concentrated minerals
through the drain pipe.
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