TM 9-4120-407-14
1-10. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS. The information that follows
references the location and description of major components found in Figure 1-1.
Fresh Air Filter Element (1). Provides filtered outside air.
Condenser Air Damper Vanes (2). Controls air flow across the condenser coil to maintain optimum
refrigerant system discharge pressure.
Safety Control Box Assembly (3). Contains HIGH and LOW PRESSURE CUTOUT switches (S5 and
S6) and control circuit breakers (CB1).
Condenser Discharge Air Deflector Door (4). Shown in open operational position. When closed, it
protects the rear (exposed) surfaces of the air conditioner.
Liquid Sight Indicator (5). Allows visual inspection and indicates condition of liquid refrigerant when
the air conditioner is operating in the cool mode.
Condenser Coil (6). Serves as a heat exchanger by transferring heat from the refrigerant passing
through the tubing to the air passing over the tubing and fins.
Condenser Coil Guard (7). Protects coil from damage.
Left Evaporator Fan and Motor (8). Draws air into the evaporator section and exhausts it through the
evaporator (cooling) coil and heater elements into the room or enclosure.
Evaporator Coil (9). Serves as a heat exchanger by transferring heat from the air passing through
the tubing and fins to the refrigerant passing through the tubing.
Right Evaporator Fan and Motor (10). Draws air into the evaporator section and exhausts it through
the evaporator (cooling) coil and heater elements into the room or enclosure.
Fabric Cover (11). Shown in stowed (operational) position. When rolled down and snapped, it
protects the rear (exposed) surface of the air conditioner.
Heater Elements (12). The six heating elements warm the air to the conditioned space.
Mist Eliminator (13). Prevents condensate (water) from being blown from the coil into the room or
enclosure.
Evaporator Air Discharge Grille (14). Adjustable louvers allow control of discharge air direction.
Evaporator Air Return Grille (15). Adjustable louvers allow control of outside (fresh) and return (from
room or enclosure) air.
Conditioned Air Filter (16). Provides filtered return air.
Input Power Receptacle (17). For connection of external power source cable.
Control Panel Assembly (18). Contains switches, controls and indicators for operating the air
conditioner. See items (19), (20), and (21) for a description of these switches, controls and indicators.
Mode Selector Rotary Switch (19). Allows selection of air conditioner operating mode.
Temperature Potentiometer Control (20). This control allows adjustment of the conditioned air
temperature while operating in the cool or heat modes.
Light Emitting Diodes (Fault Lights) (21). Helps to indicate problem areas if the air conditioner
fails.
1-5