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TM 5-4120-270-15
Section IV. OPERATION OF EQUIPMENT
2-10.
General
a.
The
instructions
in
this
section
are
published for the information and guidance of personnel
responsible for 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,
stopping, and operating details of the air conditioner.
Since nearly every application presents a different
problem, the operator may have to vary given procedure
to fit the individual job. Operating control settings are
listed in table
2-1.
Table 2-1. Operating Control Settings
2-11.
Starting
a.
Perform
daily
preventive
maintenance
services (pars 3-6).
b.
Refer to figure 2-, and start the air con-
ditioner.
c.
If the air conditioner fails to start, remove
cover on lower front panel and reset the circuit breaker.
Caution: Wait 5 minutes before restarting the
unit after operation.
d.
Refer to table 21, and adjust air condition-
er for desired mode of operation.
2-12.
Stopping
Refer to figure 2-4, and stop the air conditioner.
2-13.
Air Conditioner Operation
Refer to figure 25, for instructions on operation of the air
conditioner.
2-14.
Operation In Extreme Cold
a.
General. The air conditioner is designed to
operate at a maximum low temperature of -650F,
(Fahrenheit). Be sure that all thermostatic 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.
2-15.
Operation In Extreme Heat
a.
General. The air conditioner is designed to
operate satisfactorily at temperatures up to 1256F.
b.
Ventilation. Allow sufficient room around
the air conditioner for adequate air circulation. Note. Do
not restrict the flow of air at the intake and discharge
openings of the unit.
2-16.
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.
2-5
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