Tait TB8100 Installation Manual - 1.7
8
Installation
TB8100 Installation Guide
© Tait Electronics Limited June 2005
1.7
Ventilation
Always ensure there is adequate ventilation around the TB8100 BSS.
Do
not
operate it in a sealed cabinet. You
must
keep the ambient temperature
within the specified range, and we
strongly
recommended that you ensure
that the cooling airflow is not restricted.
Important
The cooling fans are mounted on the front panel and will
only operate when the panel is fitted correctly to the front
of the subrack. To ensure adequate airflow through the
BSS, do not operate it for more than a few minutes with the
front panel removed (e.g. for servicing purposes).
1.7.1
Ambient Air Temperature Sensor
The ambient air temperature reading
for the TB8100 BSS is provided by
the ambient air temperature sensor
board
b
fitted to the PA control
board.
The sensor board is inserted through
slots in the control board and heatsink
to be positioned between the heatsink
fins.
Important
If the sensor board is to provide accurate ambient tempera-
ture readings, it must have forced airflow and must not
come into contact with the metal of the heatsink fins.
Do
not stack PAs with the fins together.
It is possible for
the fins on one heatsink to slide between the fins on the
other heatsink. This can damage the sensor board, and pos-
sibly result in the heatsink fins becoming locked together.
1.7.2
Cabinet and Rack Ventilation
Refer to
Figure 1.2 on page 9
.
The cooling airflow for the TB8100 BSS enters through the front panel and
exits at the rear of the subrack. For optimum thermal performance, the
heated air that has passed through a BSS must not be allowed to re-enter the
air intakes on the front panel. Any space at the front of the cabinet not
occupied by equipment should be covered by a blanking panel.
b