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Training, Installation & Service Manual - Livewire Connections Ltd

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Removal and replacement of ADU modules<br />

2. Adjust the belt tension using the belt-tension adjustment screw.<br />

Figure 9-56: Azimuth Encoder, adjust belt tension<br />

The tension of the belt is 90-100 Hz on average (use an Optibel<br />

frequency measuring device or alike).<br />

3. Tighten the belt tension device by tightening the 4x4 mm Allen<br />

screws.<br />

Figure 9-57: Azimuth motor, tighten the belt tensioner<br />

4. Check the tension of the belt again (90-100 Hz). If needed, repeat<br />

the tension adjustment.<br />

9-48 Chapter 9: <strong>Service</strong> & maintenance 98-133966-E2

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