COBHAM SEA TEL 9711IMA-70, Installation Manual

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9711IMA-70 Stowing the Antenna
16-1
16. Stowing the Antenna
This antenna must be properly stowed if the ship will be underway while AC power to the Above Decks Equipment (ADE) is
de-energized. Failure to do so may void your warranty.
CAUTION: There are two stow restraints that MUST be installed on this antenna pedestal if
the ship will be underway while the Above Decks Equipment is de-energized.
This antenna has brakes on the motors to help prevent damage to the antenna against short power outages while
underway; however, it is strongly recommended that AC Power to the ADE and BDE be supplied from an adequately rated
Un-interruptible Power Supply (UPS) to protect the antenna.
16.1. Installing the Stow Restraints
WARNING:
Antenna pedestal
must be properly restrained (stowed)
to
prevent damage to wire rope isolators, isolator springs and/or antenna pedestal
mechanism during underway conditions
when power is removed from the
antenna assembly.
The normal operating condition for the Sea Tel Antenna system is to remain powered up at all times. This ensures
that the antenna remains actively stabilized to prevent physical damage to the antenna pedestal and reduce
condensation and moisture in the radome to prevent corrosion. If, for some reason, the antenna must be
powered down during underway transits, it should be secured with nylon straps regardless of sea conditions to
prevent damage to the antenna system. Refer to the procedure below to secure the antenna pedestal.
Equipment & Hardware needed:
•
Two (2) ½-13 x 2-inch Stainless Steel bolts.
•
Two (2) Nylon straps with ratchet mechanism.
Nylon straps must be rated to 300 lbs. Working
load capacity and 900 lbs. Max rated capacity.
Stowing procedure:
1. Point the antenna to Zenith, (90 degree elevation angle),
straight up.
2.
Install one (1) ½-13 x 2-inch bolt into the inside of each
elevation beam as shown in Figure 1.
EAR Controlled - ECCN EAR99