TM 9-4110-254-14
SECTION II EQUIPMENT DESCRIPTION
1-10. EOUIPMENT CHARACTERISTICS, CAPABILITIES AND FEATURES
a. Characteristics. The Keco Model F500ORE, is a self-contained, electric, three phase, motor driven, panel-
mounted refrigeration unit used with a prefabricated panel type refrigerator. It requires a 208/230 volt ac, 50/60 Hertz
power source.
b. Capabilities. The unit is capable of starting and operating in ambient temperature of 0F to 125 F (-17C to
520 C) and to automatically maintain a refrigerator temperature of 0 F to 35F (-17C to 20 C).
c. Features. The portion of the condensing unit exposed to weather is capable of operating m rainfall of three
inches per hour without functional damage or impaired operation This unit is designed to use R-134a refrigerant.
1-11. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
1
CONTROL BOX ASSEMBLY. Houses the automatic and manual electrical control components.
2
EVAPORATOR COIL . Absorbs heat from the air being circulated through the refrigerator enclosure
causing the low pressure liquid refrigerant in the coil to evaporate.
3
COMPRESSOR. Moves the refrigerant through the refrigeration system by raising the pressure of the
incoming gas from the evaporator coil and discharging it as a high pressure gas.
4
the gas to condense into a high pressure liquid.
5
AC MOTOR. Drives the air handling components.
6
EVAPORATOR FAN. Circulates air through the refrigerator and across the evaporator coil.
7
CONDENSER FAN. Circulates ambient, outside air, across the condenser coil.
8
DUAL PRESSURE CONTROL SWITCH. Provides over/under pressure protection for the refrigeration
system The switch has a manual reset for overpressure conditions.
9
DIFFERENTIAL OIL PRESSURE SWITCH. Provides protection against loss of lubricating oil in the
compressor. The switch has a manual reset for low oil conditions.
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