Nautel NX300, Руководство по установке

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NX300 Installation Manual Completing cabinet assembly
Page 3-4 Issue 3.0 2012-11-01
9. Locate two “Top Joiner Plates” 207-8274-01. Attach
each
plate between the top of the
two
cabinet
interfacing junctions
(see Figure 3.5 on page 3-11 ) using 16 M5 screws.
10. Tighten the cabinet bonding hardware installed in Step 4 .
11. Install the connector pipe (194-6298-02) (see Figure 3.5 on page 3-11 and Figure 3.6 on page
3-12 ) between cabinets 2 and 3. Torque securing nuts to 60 in-lb (6.8 N-m).
12. See Figure 3.6 on page 3-12 . In the control cabinet (Rack 1), unwrap the copper straps from
inductors RK1-L7 and RK1-L8. Reattach the straps to the aluminum plate in the middle
cabinet (Rack 2) using supplied hardware. Ensure proper hardware orientation as shown in
Figure 3.6 on page 3-12 . Torque the strap hardware to 292 in-lb (32.7 N-m). Arrange or
form the straps so that they do not touch inductors RK1-L7 or RK1-L8 or come within
0.5 inches (1.25 cm) of any ground potential point.
13. Locate and unpack all the “NX300 Internal Assembly” items (see Figure 3.5 on page 3-11 )
from the ancillary crate.
14. Remove the two cover plates (Nautel Part # 207-8162) from the side of the control and
output cabinets (four plates total). Retain all securing hardware. It is not necessary to remove
the center cover plate.
15. Refer to the “NX300 Internal Assembly” diagram in Figure 3.5 on page 3-11 , noting all parts
are identified with a Nautel Part # (e.g., 207-xxxx). The combiner covers are already installed,
and shown for reference only.
• Locate and unpack a Nautel Part # 207-8251-02 “Copper Tube”. From the Output
Cabinet side, carefully insert the “Copper Tube” (flat brass end first) into the upper, left
opening behind the removed side cover plate and slide in approximately 2 ft (0.6 m),
leaving at least six inches of the copper tube’s L-shaped brass end outside of the cabinet.
Ensure that combiner transformer windings are not damaged.
• Locate and unpack a Nautel Part # 207-8251-03 “Copper Tube”. Align its L-shaped
brass end with the other copper tube and use the “Combiner Tube Jig” (Nautel Part #
207-9566) to hold the copper tubes in place while securing them together using two M8
captive screws. Remove the jig.
• Carefully slide the joined copper tube section in and guide the end through the large hole
in the “Teflon Plate” between the output cabinet and middle cabinet, leaving at least six
inches of the second copper tube’s L-shaped brass end outside of the cabinet.