Water Treatment; Winter Storage; Cleaning The Condenser (Air Cooled) - Cornelius SERIES 750 (R404a Service Manual

WATER TREATMENT

During the freezing process, as water passes under the freezing plate, the impurities in the water have a ten-
dency to be rejected and the plate will freeze only the pure water.
However, the more dissolved solids in the water, the more troublesome the freezing operation will be. Bicarbon-
ates in the water are the most troublesome of the impurities. These impurities will cause scaling on the evapo-
rator, clogging of the water distributor head, float valve mechanism and other parts in the water system. If the
concentration of impurities is high, cloudy cubes or mushy ice may be the result.
Parts of the ice maker, that are in contact with the water or ice, may corrode if the water is high in acidity. In
some areas, water may have to be treated in order to overcome some of the problems that arise because of the
mineral content.
IMI Cornelius has water filter/treatment systems available to control impurities found in your water supply. Con-
tact your local dealer for more information.

WINTER STORAGE

If the unit is to be stored in an area where the temperature will drop below freezing, it is most important that all
water lines be drained to prevent them from freezing and possible rupture.
To blow out the water line, disconnect the water supply at the cabinet inlet and use air pressure to force the wa-
ter into the water reservoir pan. This can then be removed from the water pan.
WATER COOLED CONDENSER – To remove water from condenser unhook water supply and attach com-
pressed air hose. Start machine. As head pressure reaches the appropriate level opening the water regulating
valve, the compressed air will force the water out. Do not let the machine operate longer than necessary.

CLEANING THE CONDENSER (AIR COOLED)

In order to produce at full capacity, the refrigeration condenser must be kept clean. The frequency of cleaning
will be determined by surrounding condition. A good maintenance plan calls for an inspection at least every two
months.
Remove the unit compartment grill at the front. With a vacuum cleaner, remove all accumulated dust and lint
that has adhered to the finned condenser.
CAUTION: CONDENSER COOLING FINS ARE SHARP. USE CARE WHEN CLEANING.
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