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TM5-4120-376-14
SECTION III. TECHNICAL PRINCIPLES OF OPERATION
Assure that crankcase heater is on 6 hours prior to operation in a cooling mode.
Before turning on any of the air conditioner’s operating controls, make sure that
the fabric cover is rolled up and secured, and that evaporator intake and
discharge louvers are fully open.
1-13. GENERAL. The air conditioner is a horizontal, compact, electric motor driven unit that
provides 36,000 BTU/HR for cooling and 31,200 BTU/HR for heating. Once started, it operates
automatically due to the relationship of the components, controls and instruments.
1-14. VENTILATION. Ventilation is provided in the VENT position by energizing the fan motor
which forces air out of the evaporator discharge louver.The amount of out door air used for
ventilation is determined by the position of the fresh air damper.
1-6
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