COBHAM Sea Tel 2400, Руководство по установке

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Maintenance Sea Tel 2400 Dual Band C/Ku
16-2
EAR Controlled - ECCN EAR99
16.2. Torque and Loctite Specifications
WARNI NG:
Assure that all nut and bolt assemblies are tightened according to the
tightening torque values listed below:
SAE Bolt Size Inch Pounds Metric Bolt Size Kg-cm
1/4-20 75 M6 75.3
5/l6-18 132 M8 150
3/8-16 236 M10 270
1/2-13 517 M12 430
NOTE: All nuts and bolts should be assembled using the appropriate Loctite thread-
locker product number for the thread size of the hardware.
Loctite # Description
223 Low strength for small fasteners.
242 Medium strength
638 High strength for Motor Shafts & Sprockets.
2760 Permanent strength for up to 1” diameter fasteners.
290 Wicking, High strength for fasteners which are already
assembled.
16.3. General Maintenance
16.3.1. Installing the Linear/Circular Selectable Feed Assembly
Refer to the procedure below to install the Linear/Circular Selectable feed assembly on the 2.4.m meter
offset reflector.
1. Assure that the MXP is set to Horizontal TX Polarity.
2. If this is the initial installation of a drop-in feed, skip to step 12.
3. If switching drop-in feeds, remove the currently installed drop-in by following step 4-10.
4. Disconnect the coax connections to the LNB(s).
5. Disconnect the flexible waveguide from the rigid waveguide.
6. Disconnect the feed harness.
7. Tie the reflector down, or
have someone hold it until the
drop-in feeds have been
swapped.
CAUTION: The dish will be very back
heavy when the drop-in feed is
removed, therefore, the reflector will
rise VERY abruptly if not held down
until the weight of the feed is replaced.
8. Remove the eight screws (see
red arrows) from the front of
the scalar plate to disconnect
the drop-in feed from the
scalar plate.