Martin MAC 2000 Wash User Manual download pdf (Page 22)

22 MAC 2000 Wash

Changing the aperture ring

The MAC 2000 Wash comes factory fitted with a 50 mm (2 in) aperture ring (identified by 5 small holes), and 3

optional rings:

• 30 mm (1.2 in) - identified by 3 small holes

• 40 mm (1.6 in) - identified by 4 small holes

• 45 mm (1.8 in) - identified by 4 small holes and a half-crescent

Use of the smaller apertures will result in less light output and a narrower beam angle.

To change aperture ring:

1 Disconnect the fixture from power and allow it to cool.

2 Lock the head horizontally with the top cover up.

3 Remove the top cover of the fixture using a flathead screwdriver to unlock the four quarter-turn screws.

4 The additional aperture rings can be found secured to the chassis with a thumb screw just behind the front

lens (see the following illustration). Remove the thumb screw and select the appropriate aperture ring.

5 Remove the currently installed aperture ring, from just behind the zoom lens, by pushing and twisting it.

6 Install the replacement aperture ring, lock the others in place behind the front lens using the thumb screw,

and replace the fixture cover.

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Martin MAC 2000 Wash User Manual Page 22