Unpacking and Installation, TWTA Octagon CPU
MNC-0300-003 9 of 22 Revision N
Air Ducting Installation
The power amplifier is cooled with a built-in fan. Heated exhaust
air should not be recirculated into the power amplifier. A
clearance of 6-8 inches is recommended to allow the heated
exhaust air to clear the power amplifier air inlet.
If the unit is installed in a closed cabinet or in a configuration
that would tend to recirculate the exhaust air, provisions should
be made to isolate the exhaust air from the intake air supply.
Table 1, Recommended Waveguide Flange Torque
Screw Size
Threads per
Inch
Recommended Torque
(inch-lb)
No. 4 40 4.5
80 5.5
No. 6 32 8.5
40 10
No. 8 32 18
36 20
No. 10 24 23
32 32
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