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TM 5-4120-356-14
CONDENSER FAN (1). The condenser fan draws
ambient air from the outside. The air flows
o v e r the condenser coil and is exhausted to
the outside.
CONDENSER COIL (2). Air drawn through the
condenser coil by the condenser fan cools
the  refrigerant  inside  the  condenser  coil.
TS5-4120-356-14/14
F i g u r e 1-4. Left rear three-quarter view, location and description of
major components
S e c t i o n III. Technical Principles of Operation
PRINCIPLES OF OPERATION
1-13.
a.  General.  The air conditioner is a fully self-contained unit capable of
providing cooling, heating or ventilation to the conditioned area.
b.
Cooling.
(1) The cooling section consists primarily of compressor, high and
low pressure cut-out switches, condenser coil, evaporator coil, and a fan motor
which operates both a condenser fan and an evaporator fan. When the selector switch
is placed in the "COOL" position, the fan motor and the compressor start. The cool-
ing section is under the control of the thermostat, which serves to maintain the
temperature of the conditioned area at the desired level.
(2) The compressor is a motor driven unit which is used to pump refrig-
erant through the system.  T h e h i g h p r e s s u r e c u t - o u t s w i t c h s t o p s t h e u n i t i f t h e
c o m p r e s s o r d i s c h a r g e p r e s s u r e r i s e s a b o v e 4 6 0 p s i g ( 3 2 . 3 k s / c m2 ) .
( 3 ) The refrigerant, in a gaseous vapor state, is pumped by the com-
pressor to the condenser coil.  As the refrigerant flows through the condenser coil,

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