Harman Martin ELP WW, Руководство пользователя, Страница: 11 / 36

Martin® ELP WW User Manual 11
Changing the lens tube
Four different lens tubes with fixed beam angles of 19°, 26°, 36° or 50° are available for the fixture.
Two zoom lens tubes with either 15°-30° or 25°-50
°
zoom ranges are also available. All lens tubes
are available in black or white finish. See ‘Ordering Information’ on page 31 for ordering details.
To change the lens tube, refer to the diagram below:
1. Hold the front of the lens assembly with one hand so that it cannot fall out.
2. Remove the thumbscrews (2) and (3) from the top and bottom of the lens tube. The top screw
also has the focusing wheel attached.
3. Slide the lens tube forward out of the fixture.
4. Slide in the new lens tube (1).
5. Begin to thread the thumbscrews (2) and (3) into their holes. For the top screw (2), ensure that
the focusing wheel sits on the screw with the gear teeth facing downwards, towards the fixture.
Rotate the focusing wheel until the gear teeth mesh with the toothed rack on the lens tube
housing.
6. Tighten the thumbscrews (2) and (3).