TM 9-4110-255-14
SECTION II EQUIPMENT DESCRIPTION
1-10. EQUIPMENT CHARACTERISTICS, CAPABILITIES AND FEATURES.
a.
Characteristics. The Keco Model F5000RD, is a self-contained, diesel engine driven, panel-mounted
refrigeration unit used with a prefabricated panel type refrigerator. It can be used under adverse climatic and operating
conditions without added protection from the elements.
b.
Capabilities. The unit is capable of starting and operating in ambient temperature of 0F to 1250 F (-17C
to 520 C) and to automatically maintain a refrigerator temperature of 0F and 35F (-170 C and 2C).
c.
Features. The portion of the condensing unit exposed to weather is capable of operating in 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.
See figure 1-1.
1
CONTRO BOXASSEMBLY. Houses the automatic and manual engine and electrical control
components a well as system monitoring gages.
2
EVAPORATO COIL. Absorbs heat from the air being circulated through the refrigerator enclosure
causing the low pressure liquid refrigerant in the coil to evaporate.
3
COMPRESS. 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
CONDENSER COIL. Releases heat from the high pressure gas coming from the compressor causing
the gas to condense into a high pressure liquid.
5
DIESEL ENGINE. Drives the compressor and 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 over pressure 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.
1-3
