Prism - Martin MAC 250 ENTOUR User Manual

3. Turn the color wheel to access the desired color filter. Press the
filter forwards slightly to release it and then grasp it by the
edges and remove.
4. To insert a filter, slide it under the retention spring until it snaps
into place.
5. Replace the top cover before applying power.

Prism

The standard 3-facet prism can be replaced with optional five- and
nine-facet prisms. See "Accessories" on page 49 for part numbers. See:
• Replacing the prism in a MAC 250 Entour below, or
• "Replacing the prism in a MAC 250 Krypton" on page 25.
R E P L A C I N G T H E P R I S M I N A M A C 2 5 0 E N T O U R
Danger! Intense heat. Avoid contact by persons and materials. The exterior of the fixture can get
very hot - up to 120° C (248° F). Disconnect the fixture from AC power and allow it to cool
for at least 45 minutes before handling.
Do not removing covers while the fixture is powered on as this exposes dangerous live
electrical circuits, hot surfaces, and a lamp under high pressure.
1. Disconnect the fixture from AC power and allow it to cool.
2. Remove the top cover. The top and bottom cover look the same, but the top cover is found by checking
if the text on the back of the head is oriented correctly (top) or not (bottom).Remove the top cover of the
fixture head using a flathead screwdriver to loosen the four quarter-turn screws. The top and bottom
cover look the same, but the top cover is found by checking if the text on the back of the head is oriented
correctly (top) or not (bottom) as illustrated here.
Optical configuration
B
A
Figure 4: Filter
23