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Section IV. OPERATION UNDER USUAL CONDITIONS
2-8. General
ing and stopping the air conditioner, operation of
a. The instructions in this section are published
the air conditioner, and on coordinating the basic
for the information and guidance of personnel re-
motions to perform the specific tasks for which
sponsible for operation of the air conditioner.
the equipment is designed. Since nearly every job
presents a different problem, the operator may
b. The operator must know how to perform
have to vary given procedures to fit the individ-
every operation of which the air conditioner is
ual job. Refer to table 2–1 for general operating
capable. This section gives instructions on start-
control settings.
Table 2-1. Operating Control Settings
2-9. Starting
high-and low-pressure cutout switch reset
buttons.
a. Perform daily preventive maintenance serv-
ices (table 3-1).
2-10. Stopping
b. Refer to figure 2–6 and start the air condi-
tioner.
Refer to figure 2-7 and stop the air conditioner.
2-11. Operation of Equipment
c. If the air conditioner fails to start, pull the
circuit breaker reset rod, located at the front of
Refer to figure 2–8 for instructions on operation
the unit behind the inlet grille and filter. Push
of the air conditioner.
Section V. OPERATION UNDER UNUSUAL CONDITIONS
2-12. Operation in Extreme Cold
a. General. The air conditioner is designed to
operate at a maximum low temperature of 50°
F. Ensure that all controls and dampers are in
working order.
b. Electrical System. Make sure the electrical
system is free of ice and moisture.
Caution: Do not disturb the wiring during
cold weather unless absolutely necessary. Cold
temperatures make wiring and insulation brittle
and easily broken.
2-13. Operation in
a. General. The air
Extreme Heat
conditioner is designed to
operate satisfactorily at temperatures up to 125°
F.
b. Ventilation. Allow sufficient room around
air conditioner for adequate air circulation. Do
not restrict the flow of air at the intake and dis-
charge openings of the unit.
2-14. Operation in Dusty or Sandy Areas
Clean the condenser coil and evaporator coil
weekly or more often if necessary. Clean the mist
eliminator, air conditioning filter, fresh air inlet
screen, and condenser screen daily.
2-9
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