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Section IV. OPERATION UNDER USUAL CONDITIONS
2 - 9 . G e n e r al
a. The instructions in this section are published
for the information and guidance of the personnel
responsible for the operation of the air conditioner.
b. The operator must know how to perform every
operation of which the air conditioner is capable.
This section gives
instructions on starting and
stopping the air conditioner, and detailed operating
instructions. Since nearly every condition presents a
different
problem, the operator may have to vary
the givenprocedure to fit the condition.
2-10. Starting and operating Instructions
a. Preparation for Starting.
( 1 ) Perform the daily preventive maintenance
service (para 3-6).
(2) Connect the main power cable.
(3) Check drain holes to insure that they are
open.
(4) Be sure the unit “is firmly secured.
( 5 ) Roll up condenser cover and tie at top of
air conditioner to clear condenser opening.
Note. When vent damper door is open to admit fresh
air, partially close evaporator inlet louver to balance incoming
air. Keep vent damper door closed during heavy rain.
b. Starting Instructions for Cooling. Start the air
conditioner for cooling as shown in figure 2-4.
c. Operating Instructions for Cooling. Operate
the air conditioner for cooling as shown by figure 2-
5.
d. Starting Instructions for Heating. Starting the
air conditioner for heating is shown in figure 2-6.
e. Operating Instructions for Heating. Operate
the air conditioner for heating as shown in figure 2-
7.
f. Operating Instructions for Ventilation. Operate
the air conditioner for ventilation as shown by
figure 2-8.
2-6
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