How The Machine Makes Ice; How The Machine Uses The Water - NORPOLE EWCIM44ST User Manual

ice storage bin.
4. When the ice storage bin is full, the sheet of cubes will not fall completely and will hold
the bin-full probe open. The machine automatically stops making ice and progresses to
the cold preservation stage. During this stage, the compressor works regularly to keep
the temperature low to minimize ice melting.
5. The unit will start making ice again after the ice cubes are removed. Then the bin-full
probe swings back to operating position.
IMPORTANT:
Although the unit has been tested and cleaned at the factory, due to long-term transit and
storage, the first batch of cubes must be discarded.
Never turn the water supply tap off when the ice maker is working.
Never touch evaporator when unit is running!
Except to take ice from the unit, keep the door closed to reduce melting and insure proper
ice formation.

How the machine makes ice

Set the ON/OFF button to the ON position. The machine will automatically go to the ice
making stage.
There are two distinct cycles: ice freeze and harvest.
The freeze cycle happens when water flows to the evaporator surface. The harvest cycle is
when the ice is released and water enters the machine. A complete cycle takes about 20
minutes, but it depends on temperature and operating conditions.
Freeze: During the freeze cycle the compressor is pumping refrigerant, the fan motor is
blowing air, and the water pump is circulating water. When the batch of ice has been fully
formed, the ice maker stops the freeze cycle and harvest cycle begins.
Harvest: During the harvest cycle the compressor is still operating, but the water pump has
stopped. The hot gas valve opens, diverting hot refrigerant gas into the evaporator. The hot
refrigerant gas warms the evaporator, causing the cubes to slide, as a unit, off the evaporator
and into the storage bin. The freeze cycle will restart when all the cubes have been
harvested.

How the machine uses the water

The ice maker begins with a fixed charge of water that is contained in the water trough. As
the water flows to the freezing evaporator surface, the portion of water that does not contain
mineral impurities freezes and sticks to the ice cube molds. The water containing impurities
falls back into the water trough. During the ice making process, fresh water enters into the
water trough continuously as the water in the trough freezes continuously in the evaporator.
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