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TM 9-4120-389-14
b.
Limit the amount of dusty or sandy outside air introduced through the fresh air damper to that
essential for ventilation.
c.
Roll down and secure the fabric cover on the back of the cabinet during periods of shutdown.
2-19. OPERATION IN UNUSUALLY NET CONDITIONS.
The air conditioner is designed for normal exposure to the elements, so it is reasonably waterproof. Some of
the steps that should be taken in an extremely wet climate are:
a.
More frequent inspection of the mist eliminator, condensate trap, and drain lines to insure proper
drainage and prevent accumulation of water inside the cabinet. If low air flow exists through evaporator air
outlet, contact Unit Maintenance.
b.
Roll down and secure the fabric cover on the back of the cabinet during periods of wet, windy
weather when the air conditioner is not in operation.
c.
Roll up and secure the fabric cover during dry spells when the air conditioner is not in operation so
that the interior can dry out and condensation will not accumulate.
2-20. OPERATION IN SALT AIR OR SEA SPRAY.
Salt air or sea spray may cause many of the same clogging problems as encountered when operating in a dusty
or sandy environment. In addition, the nature of salt presents serious corrosion problems. Frequent cleaning is
necessary during which all exposed surfaces should be thoroughly spray rinsed or sponged with fresh water to
remove salt.
NOTE
The fabric cover on the back of the cabinet should be rolled down and secured
during all periods when the air conditioner is not in operation.
2-36
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