TM 9-4120-404-14
1-10. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS, (Continued)
(11) Conditi oned Air Louver -- Adjustable louvers allow directional control of conditioned air.
(12) Intake Air Louver -- Adjustable louvers allow control of outside (fresh) and return (from room or enclosure)
air.
(13) Input Power Receptacle (Primary) -- For standard primary connection of external power source cable.
(14) Input Power Receptacle (Alternate) -- This alternate input power receptacle is provided to allow power
connections to the air conditioner when unit installation makes use of the primary input power receptacle
inconvenient.
(15) Control Panel Assembly -- Contains a four position mode selector switch and a temperature control
thermostat.
(16) Compressor -- Cycles refrigerant through the system during cooling operations.
(17) Condenser Fan Assembly --
Draws ambient air through the condenser coil and discharges the heated air
back to the outside during cooling operations.
(18) Condenser Air Louvers --
Adjustable louvers control amount of
air available to
cool condenser coil.
(19) Conditione d Air Filter -- Provides filtered return air.
(20) Mist Eliminator -- Eliminates mist from conditioned air.
(21) Circuit Breaker -- Located in the main electric power supply line just after the EMI filter.
The circuit
breaker provides electrical circuit protection for the air conditioner.
(22) Service Valves (High and Low Pressure) -- These valves provide a connection point for charging and
checking the refrigerant lines.
(23) Expansion Valve --
Meters refrigerant flow to
the evaporator during cooling cycles when the unit is in
the
COOL mode.
(24) Coil Frost Switch --
This thermostatic switch opens compressor circuit if
the evaporator coil begins to
ice.
to equalize the pressure at the suction and discharge sides of the compressor. It closes when the
compressor starts.
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