Installation of the ADU
3-16 Chapter 3: Installation 98-141779-G
3.3 Installation of the ADU
3.3.1 Prerequisites
• Ensure that the crane hook has a closing mechanism to prevent accidental slippage of
the lifting straps.
• Check for potential interference, read more in Interference from radar, GPS, L-band and
other transmitters on page 3-12.
• Install the ADU at a location where vibrations are limited to a minimum.
3.3.2 Overview
The ADU is shipped fully assembled. You have to install it on the mast and attach the ADU
cable.
WARNING! Use a strong webbed sling with a belt to lift the ADU without
damaging the radome. Make sure that the sling is approved for lifting of
ADUs with a weight of up to 135 kg.
WARNING! The ADU may be subject to swaying motions in windy
conditions. Always use tag lines to stabilise the ADU during hoisting. It is the
crane operator’s responsibility to determine whether the environmental
conditions are suitable for a safe lift.
Figure 3-14: Use of strong sling with a belt and tag lines for safe hoisting
Webbed sling with belt
Tag lines
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