Martin MAC 250 Krypton, User Manual

Page: 25 / 54

Optical configuration 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 K R Y P T O N
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.
3. Using a flathead screwdriver, remove the two retaining plates (only one - at position A - is illustrated
here) holding the prism module in place. Disconnect the cables (at positions marked B) from the PCBs
on the prism module.
4. Lift the prism module out of the fixture.
Minimum
dist
ance
to
flamm
Minimum
dist
ance
to
flamm
Minimum
dist
ance
to
illumina
Maximum
ambient
te
Exterior
surface
to
A
B
B