KoldFront KIM450S - Manual (Page 12)

9
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 the evaporator when the machine 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
Turn the ICE/OFF/WASH switch to the ICE position. The machine will
automatically start the ice making stage. There are two distinct cycles:
freeze and harvest. During the freeze cycle, water flows to the evaporator
surface. In the harvest cycle, the ice is released and water enters the
machine. A complete cycle can take 15 to 40 minutes, depending 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 begins the harvest cycle.
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 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 will freeze and
stick to the ice cube molds. The water containing impurities falls back into
the trough. During the ice-making process, fresh water enters the water
trough continuously as the water from the trough freezes continuously on
the evaporator.