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VARI
❋
LITE
®
- VL3000™ S
ERIES
L
UMINAIRE
S
ERVICE
M
ANUAL
38
02.9678.0010 D
Gobo Timing Adjustments
The index timing belt must be aligned so that the mechanism
"clocks" properly. This belt is installed around the index gear and
top gear of the gobo wheel. The wheel position belt is installed
around the wheel position gear and bottom gear of the gobo wheel,
and does not require alignment. Each belt is also routed around one
pulley.
For the following steps, refer to
.
To time gobo wheels:
Step 1. Position index pulley so that large flange is centered in
optical sensor.
Step 2. Insert a 3" long #4 or M3 screw (or 0.125" diameter pin)
completely through aligned holes in wheels and both
bulkheads as shown. This will lock the wheels in the
"open" position.
Step 3. To time Gobo Wheel 1, first align outside planet gear timing mark with notch in wheel.
Loosen index belt just enough to slip teeth and rotate index pulley to center slot in optical
sensor. Reset tension on belt and verify that pulley slot is still centered in sensor and sensor
is centered between two guide marks on pulley flange.
Step 4. To time Gobo Wheel 2, first align outside planet gear timing mark with mark in sun gear.
Notch in wheel should be centered between opposite planet gear teeth. Loosen index belt
just enough to slip teeth and rotate index pulley to center slot in optical sensor. Reset tension
on belt and verify that pulley slot is still centered in sensor and sensor is centered between
two guide marks on pulley flange.
Step 5. To time Gobo Wheel 3, first align planet gear timing mark with hole in wheel. Loosen index
belt just enough to slip teeth and rotate index pulley to center slot in optical sensor as shown.
Reset tension on belt and verify that pulley slot is still centered in sensor and sensor is
centered between two guide marks on pulley flange.
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