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2-11
Figure 2-4
figure2-5
Section IV. OPERATION UNDER USUAL CONDITIONS
2-8. General
a. The instructions in this section are published
for the information and guidance of personnel re-
sponsible for operation of the air conditioner.
b. The operator must know how to perform
every operation for which the air conditioner is
capable. This section provides instructions for
starting, operating, and stopping the air condi-
tioner, and on coordinating the basic motions to
perform the specific tasks for which the equip-
ment was designed. Since nearly ever y job pre-
sents a different problem, the operator may have
to vary given procedures to fit the individual job.
2-9. Starting
a. Perform the before-operation preventive
maintenance services (para 3-4).
b. Refer to figure 2-3 and start the air condi-
tioner.
2-10. Stopping
a. Refer to figure 2-4 and stop the air condi-
tioner.
b. Perform the after-operation preventive
maintenance services (para 3-4).
Section V. OPERATION UNDER UNUSUAL CONDITIONS
2-12. Operation in Extreme Cold
a. General. The air conditioner is designed to
operate at temperatures as low as 65° F. The
unit will provide cooling to plus 500 F. Be sure
that all thermostatic controls and dampers are in
operable condition.
b. Electrical System. Make sure that all wiring
and plugs are free of ice and moisture.
2-13. Operation in Extreme Heat
a. General. The air conditioner is designed to
operate satisfactorily at temperatures up to
+ 125° F.
b. Ventilation. Allow sufficient room around
the unit for adequate air circulation. Make cer-
tain that the intake and discharge grilles are not
obstructed in any manner.
2-14. Operation in Dusty or Sandy Areas
Inspect and clean the evaporator and condenser
coils frequently. Service the air conditioning
filter, fresh air inlet screen, and condenser screen
daily. Shelter the unit from dust, sand and direct
sunshine in high temperature areas, Keep electri-
cal components clean.
2-15.
If the
should
Cover
Operation Under Rainy or Humid
Conditions
unit has been installed outside, a shelter
be erected to protect it from the rain.
the unit when not operating. In humid
areas keep the unit in operation as much as possi-
ble to counteract the effects of high humidity. Re-
move cover during operation. Inspect electrical
equipment thoroughly prior to operating during
wet weather. Keep electrical components dry and
clean.
2-6
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