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-l\dl 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 for less 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.
IMPORZdNZ
• Although the unit has been tested a_Td cleaned at the factor3; due to long-term transit
and storage, the Jilwt batch of cubes must be discarded.
• Never turn the water supply mp offwhetl the ice maker is working.
• Never touch evaporator when unit is running!
• Except to rake ice ,[tvm the unit, keep the door closed to reduce melting and insure
proper ice formation.
How the machhte 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 fi'eeze 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 fi'eeze cycle the compressor is pumping refi'igerant, 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 fi-eeze 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 s{orage bin. The tieeze cycle will restart when atI the cubes have
been harvested.
How the machh_e 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 fi'eezes 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 trough fi'eezes continuously in the
evaporator.
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