Comtech EF Data CST-5000 - Manual (Page 40)

Single Thread System Installation CST-5000 C-Band Satellite Terminal
2–12 Rev. 9
4. Install the pipe blocks as follows:
a. Install two spring nuts in each of four 14 inch (35.6 cm) unistruts (the two
just mounted on the RFT, and two additional).
Be sure to position the spring nuts in the unistruts wide enough apart so that
when the pipe blocks are installed, they will clear the pole when the unit is
lifted into place for installation.
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 four 5/16-18 x 1” bolts, 5/16
inch (8 mm) split lockwashers, and
5/16 inch (8 mm) flat washers,
loosely secure the pipe blocks to the
spring nuts.
Ensure the pipe blocks are installed
with the long angle facing inward,
toward the pipe, as illustrated.
DO NOT tighten the pipe block bolts
until after mounting the RFT on the
vertical pole. (See Step 6.e.)