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TM 5-4120-377-14
RETURN AIR FILTER - Provides filtered return air.
INTAKE (RETURN) AIR GRILLE - Adjustable louvers allow control of outside (fresh) and return
(from room or enclosure) air.
CONTROL PANEL - Contains
thermostat.
The control panel is shown in its
a five position mode selector switch and a temperature control
NOTE
location when the air conditioner is installed as a self-
contained unit. The control panel is designed so that it may be removed from the cabinet
and installed in a remote location. See installation instructions (para 4-7).
JUNCTION BOX - Contains and protects electrical system control devices.
EVAPORATOR COIL - Serves as a heat exchanger by transferring heat from the air passing over
the tubing and fins to the refrigerant passing through the tubing.
FABRIC COVER - Shown on rear view in stowed (operational) position. When rolled down and
snapped it protects the rear (exposed) surface of the unit.
FRESH AIR FILTER AND DAMPER - Provides filtered outside air.
REFRIGERANT SIGHT GLASS (liquid sight indicator) - Allows visual inspection and indicates
condition of liquid refrigerant when the unit is operating in the cool mode.
INPUT POWER RECEPTACLE - For connection of external power source cable.
NOTE
The air conditioner is designed so that the input power receptacle may be used in the
front panel location shown, or it may be moved to one of four other alternative locations.
See installation instructions (para 4-9).
HIGH AND LOW REFRIGERANT PRESSURE CUTOUT SWITCHES (S6 and S7) - Protects
compressor from possible damage due to excessively high or low refrigerant pressures.
COMPRESSOR CIRCUIT BREAKER (CB1) RESET KNOB - Actuates a push-pull type control
cable for resetting compressor circuit breaker.
CONDENSER AIR OUTLET GRILLE - Protects personnel from injury and fan from damage.
COMPRESSOR (B1) - Pumps refrigerant through the system during cooling operations.
CONDENSER COIL - 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 - Protects coil from damage.
CONDENSATE WATER DRIP PAN AND DRAIN TRAP - The drip pan is located directly below
the evaporator coil and mist eliminator and is built into the casing. Its purpose is to collect
condensate that drips off the evaporator coil and mist eliminator during cooling operations.
Condensate water then flows through tubing to the drain traps located inside the lower right and left
hand front corners of the cabinet. The drain traps contain check valves that prevent air flow
between the condenser and evaporator sections through the drain tubing.
1-4
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