VARI❋LITE - VL440 / VL770 / VL880 LUMINAIRE USER’S MANUAL
20 31 October 2013 02.9687.0001 C
Align Lamp For Maximum Beam Irradiance
After a new lamp is installed in the luminaire, it will be necessary to align the lamp to optimize the
beam.
WARNING: Backcap and alignment screws will be HOT during lamp operation. Wear gloves and/or
use tools to prevent burns.
To align lamp:
Step 1. Set intensity to 100%.
Step 2. Position beam on a white wall at a distance of 10 to 20 feet.
Step 3. Using console or internal luminaire menu controls, set zoom to zero and focus to a hard
edge. Be sure that beam-size iris is completely opened.
Step 4. Using three alignment screws (as indicated with Red Arrows in Figure 2-5) adjust hot spot
to center of beam.
Step 5. Check color uniformity as follows:
a. Position one of the color (cyan or magenta works best) at 30% of maximum.
b. Verify that beam color is uniform (if lamp is misaligned, color will be concentrated to
one side of beam). If color is not uniform, readjust lamp using lamp alignment screws
until color is uniform across entire beam field.
Figure 2-5: Lamp Alignment Screws
NOTE: *Lamp Socket Cover removed for clarity. It is not necessary
to remove Lamp Socket Cover to align lamp.
Rear of Luminaire
Lamp (Beam)
Alignment Screws*
Do not loosen or use these
screws for adjustment.
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