Martin MAC Viper AirFX Safety And Installation Manual page 22

Replacing an aerial effect gobo
Important! A gobo can fall out of its holder if its spring is inserted the wrong way round.
Do not lubricate gobo bearings: excess grease can cause loss of step.
Correct gobo orientation is critical. Read the guidelines in Figure 19 carefully before installing a
gobo.
The MAC Viper AirFX has an aerial effect wheel with five rotating gobos. Gobos are interchangeable.
Install gobos in the same orientation as when you removed them, or you will alter the gobo angles obtained
at the DMX controller. This is easiest if you replace gobos one at a time.
To replace a gobo:
1. See Figure 20. Turn the aerial effect wheel so that the magnets (arrowed) in each goboholder all point in
towards the center of the wheel.
2. Grasp the goboholder by its teeth and pull it out of its clip to remove it from the wheel. Avoid rotating the
gobo wheel while a gobo is removed.
3. Gobos are held in their holders by springs. To remove a gobo, see Figure 21. 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 onto a clean, soft surface.
To install a gobo:
4. Insert the new gobo in the holder with the side that must face towards the lamp facing upwards, towards
the spring (see Figure 21 and Figure 19).
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Figure 20: Goboholder position for replacement
Figure 21: Gobo retaining springs
MAC Viper AirFX Safety and Installation Guide