Harman Martin ERA 600 Performance, Safety And Installation Manual

Page: 23 / 32

Service and maintenance
23
Gobo alignment
See Figure 18. Note
the position of the
alignment marks
(arrowed) on
goboholders and
gobos. Install gobos
with the alignment
marks next to each
other.
Gobo replacement procedure
Avoid getting grease from your fingers or dirt onto gobos. Hold gobos by their edges only. Wear nitrile
cleanroom gloves when handling gobos.
To replace a gobo in a goboholder:
1. See Figure 19. Place the goboholder on a clean surface with the shiny side of the gobo facing upwards.
Note the position of the bend (arrowed) in the end of the gobo retaining spring. Using a plastic lever to
avoid scratching the gobo, lever the end of the retaining spring out of the groove in the goboholder and
lift the retaining spring out of the goboholder.
2. Turn the goboholder teeth side up and let the gobo fall out of the holder onto a clean, soft surface. Put
the goboholder on the surface teeth side down again.
3. Holding the new gobo by its edges, insert it into the goboholder with the alignment marks on gobo and
goboholder oriented correctly and with the shiny side facing upwards (see Figure 18). Check that the
gobo is fully seated in the holder.
4. Insert the retaining spring into the goboholder and press it into its groove in the goboholder. Check that
the spring is pressed as flat as possible against the gobo and that the gobo is held securely in the
goboholder.
5. Reinstall the goboholder in the gobo wheel using the section “Replacing a rotating gobo” on page 19 as
a guide.
6. When service work is finished, reinstall the head covers as described using the section “Opening the
head for access” on page 18 as a guide.
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Figure 18: Gobo alignment marks
Figure 19: Removing a gobo from a goboholder