TM 11-5895-463-15
in use, and replace the covers on the cable con.
weatherproof the receptacle mounted on the
nectors.
(3) Turn the OFF-FAN-COOL selector
c. Warm, Damp Climates. In warm, damp
switch to COOL.
climates, the equipment is subject to damage
(4) Turn the thermostat knob to extreme
from moisture and fungi. Wipe moisture and
right (in the direction of the arrow) until the
fungi from the exterior of the equipment with
a lint-free cloth.
required to satisfy cooling requirements.
(5) Turn the fresh air control to OPEN
if outside air is desired.
Note. To turn off the power in an emergency, op-
U n d e r Adverse Climatic
erate the MAIN circuit breaker switch to OFF.
Conditions
a. Stopping Procedures. Stopping procedures
The AN/MSC-31A can be operated in ex-
are not required for the SB-22A/PT or the
tremely cold or hot climates. The shelter offers
TA-312/PT. Refer to the applicable technical
protection from the elements for personnel and
manuals (appx A) for stripping procedures on
equipment. However, when the entrance boxes
are exposed to adverse conditions, the follow-
ing precautions are necessary.
to be performed for storage or transit of the
AN/MSC-31A.
a. Cold Climates. Extreme cold causes the
cables and wires to become hard, brittle, and
b. AN/MSC-31A Components.
difficult to handle. Be careful when handling
(1) Electric Heaters. Operate the TEM-
the cables and when connecting them to the
PERATURE CONTROL to its lowest setting
AN/MSC-31A so that kinks and unnecessary
and the HEATOFFFAN switch to OFF.
loops will not result in permanent damage.
Note. After the other AN/MSC-31A compo-
Make sure that the binding posts and cable re-
nents have been turned off, allow the exhaust blower
ceptacles on the outside of the AN/MSC31A
to remain in operation for at least 10 minutes to evac-
are free of frost, snow, and ice by replacing the
uate all smoke and fumes before completing the
stopping procedures and closing the shelter door.
on the entrance boxes when they are not in use
(2) Blowers. O p e r a t e t h e B L O W E R
Lower and secure the folding side panels when
switches to OFF. Secure the vents.
the entrance box covers are open. Replace the
(3) Air conditioner (fig. 3-1).
connector covers as soon as the connectors are
(a) Operate the OFF-FAN-COOL selec-
disconnected from the equipment; never drag
tor switch to the OFF position.
or place an open connector in snow or on the
(b) Operate the fresh air control to the
ground.
CLOSED position.
b. Hot, Dry Climates. In hot, dry climates,
c. Circuit Breaker and Light Switches.
Operate all circuit breaker and light switches
are subject to damage from dirt and dust.
to OFF.
Lower and secure the folding side panels when
d. Door and Entrance Box Covers. Secure
the entrance box covers are open, Close the
the door and entrance box covers.
covers on the entrance boxes when they are not