Cornelius 500-Series Informacje Techniczne Pobierz pdf (Strona 10)

Cornelius Ice Makers Training Manual

EVAPORATOR EFFICIENCY

The evaporator on the Cornelius/Wilshire ice maker can be tested for efficiency in three easy ways.

1. Simply observe the ice coming out of the extruding head during production. As the auger rotates, an

ice chunklet should pop out of each extruder slot on every rotation.

2. Frost pattern testing of the evaporator. Open up the ice maker so that the auger/extruding head can

be removed. (This may require waiting until the evaporator has thawed out). Remove the assembly

and allow the evaporator to fill with water. Start up the ice maker and allow it to run for exactly one

minute and 45 seconds. Immediately shut the unit down, drain the evaporator or use a flashlight to

look down into the cylinder. A sleeve or spiral of ice should have formed inside the evaporator tube.

This sleeve should extend the full length between the refrigerant inlet and suction outlet lines. There

should be no interruptions, gaps or holes in this pattern. There will not be any ice at either end,

which are beyond the refrigerant lines.

3. Weighing output. The 24-hour output of the ice maker may be determined by weighing its output of

ice for 15 minutes and multiplying that figure by 96. This figure can also be used to calculate water

usage. The weight of melted ice (water) must be included in either of the above calculations for

accuracy. This test is performed easier on WCC/WCF units than IMDs for obvious reasons. The ice

maker should be allowed to run at least 5 minutes before starting the test.

WATER AND AIR TEMPERATURE

Incoming water temperature and ambient air temperature have a significant effect on ice production.

Contrary to a popular misconception, warm water does not freeze faster than cold water. The incoming

water temperature has a great effect on ice. Combined with a hot ambient temperature, which makes the

condenser less efficient, ice production can be cut back considerably. Inversely, too cold incoming water

or ambient air can produce ice which is so hard that the ice maker will groan and squeak. Water and air

temperature would have to be at 50° F. or lower for this to occur. If placing an ice maker in a cold environ-

ment such as a walk-in cooler, it is advisable to select a model with a remote condenser and to protect

the water line from getting too cold.

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Cornelius 500-Series Informacje Techniczne Strona 10