Installing The Diffuser Filter - Martin smartMAC User Manual

Replacing rotating gobos
Important! The gobo can fall out if the spring is inserted the wrong way round.
The gobos are held in goboholders by a retention spring (see Figure 16).
Note that the retention spring can only be used with gobos maximum 3
mm thick. Thicker gobos can be glued to the holder with a UV adhesive or
Loctite 330 Multibond with Activator.
To replace a rotating gobo
1. Put on clean, lint-free, heat-resistant gloves to protect your fingers and
avoid getting oil on optical components
2. Remove the gobo as described on page 31.
3. With a small screwdriver or similar, unhook the end of the gobo spring
furthest from the gobo and pull out the spring. Drop the gobo out of the
holder.
4. Insert the new gobo in the holder with the side that faces towards the
lamp facing upwards, towards the spring (see Figure 13 and Figure
16).
5. Insert the spring with the narrow end against the gobo, as shown in Figure 16. To identify the narrow
end, press the spring flat: the narrow end is on the inside. Push the end of the spring in under the lip of
the holder.
6. Check that the gobo is seated flush against the holder. Press the spring as flat as possible against the
back of the gobo.
7. Work the rim of the goboholder under both clips on the gobo wheel until you can snap the goboholder
back into position. If necessary, lever the clips away from the wheel slightly with a small screwdriver or
similar tool.
8. Close the access hatch, pressing firmly until there is a definite click.

Installing the diffuser filter

The smartMAC has a filterholder
for permanent filters on the front
of the lamp module. The diffuser
filter supplied with the fixture can
be installed in this filterholder to
give a slightly more even beam
(i.e. wider half-peak and
one-tenth peak angles but little or
no change in cutoff angle: see
photometric specifications on
www.martin.com for full data).
To install the diffuser filter:
1. Disconnect the fixture from
power and allow to cool for at
least 30 minutes.
2. See Figure 17. Remove the
four quarter-turn screws from
the front cover. Lift the front
cover forward slightly, detach
the safety wire, and remove
the front cover.
3. Unscrew and disconnect the
two effects multi-connectors
from the top of the head.
32
Figure 17: Removing the front cover
smartMAC user manual
Figure 16: Rotating
goboholder