PRG VARI LITE VL5, Service Manual

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VL5 ™ WASH LUMINAIRE SERVICE MANUAL 21
VL5Arc Lamp Adjustment
Note: The VL5Arc luminaire lamp requires adjustment to maximize beam intensity.
Tools:
Screwdriver, #1 Phillips
Cotton gloves or finger cots
Clean, soft, lint-free cloth
Glass cleaner (commercial grade)
To adjust Lamp:
WARNING: All maintenance procedures are to be performed with power removed from the luminaire. Never
remove covers or open front lens or back cap assemblies while lamp is in operation.
Step 1. Disconnect luminaire AC input cable from power source.
WARNING: Allow lamp to cool before performing this procedure.
Step 2. Unlatch and swing open heatsink assembly.
CAUTION: Wear gloves or finger cots when handling lamp or reflector.
Step 3. Ensure the following:
a. Reflector is mounted in center of rear casting and secure enough to prevent it from moving. If not, at
four reflector mounting clips, using #1 Phillips screwdriver, loosen four 6-32 X 3/8" PPSS screws (but
do not remove). Center reflector and retighten screws securely.
b. Lamp is plugged into socket firmly and is centered in opening of reflector. Adjust as necessary.
Step 4. Using clean, lint-free, soft dry cloth, wipe lamp and reflector clean of any dust or fingerprints.
Step 5. Close and latch heatsink assembly.
Step 6. Supply power to luminaire.
Step 7. Set color to white and intensity to 100%.
Step 8. Unlatch and swing open front lens ring (this will make hot spot and halo easier to see).
Step 9. Shine lamp on flat surface 10-20 feet away.
Step 10. Using lamp adjustment screws, adjust lamp. Figure 2-5.
a. Minimize size of halo around hot spot. It will not completely disappear, but should be even and
symmetrical all the way around with no large blotches of color at any one point.
b. Maximize spot intensity by making hot spot as small and tightly focused as possible. Hot spot should
be centered in halo and in larger brownish circle surrounding it.