Section III. TECHNICAL PRINCIPLES OF OPERATION

TM 5-4120-374-13

Section III. TECHNICAL PRINCIPLES OF OPERATION

1-11. GENERAL

The air conditioner is a floor-mounted, self-contained, electric motor driven unit that provides 9,000 BTU/

HR for cooling. Once started, it operates automatically due to the relationship of the components, controls

and instruments.

With the selector switch in the COOL position, the fan motor and the compressor are energized. The fan

motor and compressor run continuously. The flow within the refrigerant circuit determines the cooling

mode of unit, With the fan motor and compressor operating, the flow within the refrigerant circuit is con-

trolled by the THERMOSTAT switch.