Comtech EF Data HPCST-5000 - Manual (Page 104)

Redundant System Installation High-Power C-Band Satellite Terminal
4–22 Rev. 0
3. Install 20” unistrut as follows:
Note: The placement of the pipe blocks may interfere with the inner or center
unistrut attaching bolts. Be sure to determine the pipe block placement locations
before bolting the 20” unistrut in place. It may be necessary to eliminate the
inner or center mounting spring nuts and bolts.
a. Position an 20” unistrut (with
the open side facing up) over
one set of the mounting holes
on the C-Band SSPAs.
b. Using six 3/8-20 x 1” bolts,
3/8” split lockwashers, and
3/8” flat washers, attach the
20” unistrut to the mounting
bracket.
Note: Tighten the bolts firmly.
c. Repeat Steps 3.a. and 3.b. for
each of the remaining 20”
unistruts (two required).
d. Insert a spring nut between the
unistrut mounting bolts.
e. 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 3.b.(1) through 3.b.(3) for each spring nut.