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4. See Figure 21. You do not need to remove the effects module to replace color filters. Rotate the color
wheel until the filter that you want to change A is accessible. Lift the outer edge of the filter away from
the color wheel slightly to release it, then pull it free of its retention spring and out of the color wheel.
5. To insert a filter, slide it into the color wheel so that it clips under its retention spring and make sure that
the filter's outer edge engages in the lip on the edge of the color wheel.
6. If no further service work is to be carried out, reinstall the top cover with its safety wire and release the
tilt lock.
Aerial effects in the MAC III AirFX
The MAC III AirFX uses specially-designed borosilicate 3.3 aerial effect gobos with a heavy matted
aluminum coating that require particularly careful handling and storage.
The use of metal gobos in the MAC III AirFX is not recommended.
Do not use gobos with dark coatings on any side, as these will absorb heat – either directly from the lamp or
reflected back from other optical components – and will not be durable.
Handling and storage
1. Store all gobos in a dust-free environment with approx. 50%
humidity.
2. Always use clean gloves when handling gobos.
3. Avoid touching the other gobos when taking out a gobo from the
rack: the sharp edge of one gobo can scratch the others.
4. Clean the coated side of gobos with dust and oil-free
compressed air only.
5. Clean the uncoated side of gobos with photographic quality
lens-cleaner and optics cleaning tissues. Use a repeated
dabbing action rather than a rubbing action.
6. Avoid scratching coated and uncoated sides.
7. Never place a gobo with the coated side face-down on any
surface.
8. Mount the gobo with the matted coating towards the lens.
Replacing aerial effect gobos
Important!
The gobo can fall out if the spring is inserted backwards. Do not lubricate gobo bearings: excess
grease can cause loss of step. Correct gobo orientation is critical. Read the guidelines in Figure 27
carefully before installing a gobo.
To replace a gobo:
1. Open the top cover as described under "Replacing a color filter" on page 39.
B
B
40
B
Figure 23: Module connectors and wiresets
MAC III AirFX user manual
Figure 22: Rotating gobo holder
C
C
D
D
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