Comtech EF Data HPCST-5000 - Manual (Page 93)

High-Power C-Band Satellite Terminal Redundant System Installation
Rev. 0 4–11
4. Install the pipe blocks as follows:
a. Install two spring nuts in each of the two 20” long unistruts and two 14” long
unistruts (centered in the unistruts, and wide enough apart so the pipe blocks
will clear the pole when the unit is installed).
b. Install each spring nut
as follows:
(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. Using eight 5/16-18 x
1” bolts, 5/16” split
lockwashers, and
5/16” flat washers,
loosely secure the pipe
blocks to the spring
nuts.
Notes:
1. Ensure the pipe blocks are installed with the long angle face inward, toward
the pipe, as illustrated.
2. DO NOT tighten the pipe block bolts until after mounting the RFTs on the
vertical pole. (See Step 6.e.)