Comtech EF Data HPCST-5000 - Manual (Page 57)

High-Power TWTA Satellite Terminals Single Thread System Installation
Rev.1 2–11
4. Install the threaded rods as follows:
a. Install two spring nuts in both 14”
unistruts mounted on the TWTA.
Note: Ensure the spring nuts are
positioned over the outer holes in the
14” unistruts, as illustrated.
b. To install each spring nut:
(1) Place the spring nut in the
unistrut channel, spring side
down, with its wide side parallel
with the unistrut channel.
(2) Press down on the spring
nut to compress the spring, and
rotate the nut 90
°
(i.e.,
perpendicular to the unistrut).
(3) Release pressure on the spring nut.
(4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut.
c. Thread a 5/16-18 nut approximately 1-1/2” onto each threaded rod. (This
will ensure that the threaded rods will extend beyond the spring nuts when
installed.)
d. Place a 5/16” split
lockwasher, 5/16” flat
washer, and flat fitting
plate over each
threaded rod.