Axcera INNOVATOR, Инструкция по эксплуатации

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UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations,
Translator Installation and Setup Procedures
LX Series, Rev. 3 3-3
thought of air conditioning only the
front of the unit. Cooling air is
drawn in at the front of all
transmitters and in the front and
back of others. Any attempt to
separate the front of the
transmitter from the rear of the
unit will adversely affect the flow of
cooling air.
4.
Interlocking the transmitter with
the air conditioner is recommended
to keep the transmitter from
operating without the necessary
cooling.
5.
The periodic cleaning of all filters is
a must.
When using ventilation alone, the
following general statements apply:
1.
The blower, with attendant filters,
should be on the inlet, thereby
pressurizing the room and
preventing dirt from entering the
transmitter.
2.
The inlet and outlet vents should be
on the same side of the building,
preferably the leeward side. As a
result, the pressure differential
created by wind will be minimized.
Only the outlet vent
may be
released through the roof.
3.
The inlet and outlet vents should
be screened with 1/8-inch
hardware cloth (preferred) or
galvanized hardware cloth
(acceptable).
4.
Cooling air should enter the room
as low as practical but in no case
higher than four feet above the
floor. The inlet must be located
where dirt, leaves, snow, etc., will
not be carried in with the cooling
air.
5.
The exhaust should be located as
high as possible. Some ducting is
usually required to insure the
complete flushing of heated air
with no stagnant areas.
6.
The filter area must be large
enough to insure a maximum air
velocity of 300 cubic feet per
minute through the filter. This is
not a conservative number but a
never-exceed number. In a dusty
or remote location, this number
should be reduced to 150 CFM.
7.
The inlet and outlet(s) must have
automatic dampers that close any
time the ventilation blower is off.
8.
In those cases in which a
transmitter is regularly off for a
portion of each day, a
temperature-differential sensor
that controls a small heater must
be installed. This sensor will
monitor inside and outside
temperatures simultaneously. If
the inside temperature falls to
within 5° F of the outside
temperature, the heater will come
on. This will prevent condensation
when the ventilation blower comes
on and should be used even in the
summer.
9.
A controlled air bypass system
must be installed to prevent the
temperature in the room from
falling below 40° F during
transmitter operation.
10.
The blower should have two
speeds, which are
thermostatically controlled, and
are interlocked with the
transmitter. The blower on high
speed must be capable of moving
the required volume of air into a
half inch of water pressure at the
required elevation. The free air
delivery method must not be
used.
11.
Regular maintenance of any filters
can not be overemphasized.