PRG BEST BOY HP SPOT LUMINAIRE, Service Manual

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PAGE
76
BEST BOY
®
HP SPOT LUMINAIRE
|
SERVICE MANUAL
|
MAINTENANCE
REMEMBER:
LENS GROUP 1 IS CLOSEST TO THE LAMP
LENS GROUP 3 IS FURTHEST FROM THE LAMP
LENS GROUP 2 IS IN THE MIDDLE
Step 6. Prior to removing the Group 3 Light Shield from the front of the fixture, you must remove at least one of the
cable bundles secured to the top and bottom of the Light Shield. You have two options for this step,
depending on your personal working preference:
a. You can remove both cable bundles and completely remove the Group 3 Light Shield assembly, or
b. You can remove one side and allow the Light Shield to remain connected as long as you support any
stress on the cables attached. See
Figure 3-37 below.
When cutting either cable bundle loose from the Light Shield, do not cut the wire tie attached directly to
the Light Shield, cut the tie that is secured to that tie, you will need it upon reinstallation. Don’t cut the
bundle apart, either. See
Figure 3-37 below.
Figure 3-37: Freeing Cable Bundles from Group 3 Light Shield
Step 7. Remove the four 10-32 x 1/2" Socket Cap screws securing the light shield assembly to the lens rails, two
screws per side. See Figure 3-38 below.
Figure 3-38: Removing the Light Shield Assembly
Step 8. Gently pull the Group 3 Light Shield assembly straight off of the rails once the screws are removed. Set the
shield aside of you remove both cable bundles, or make sure it is secured if you remove just one.
Step 9. Orient yourself so that you are on the Group 3 lens Motor assembly side.
Step 10. Loosen the set screw on the Lead Screw, not the Group 3 motor, so that the lead screw can spin inside the
carrier. As you turn the lead screw it WILL still move the lens, so use caution with the lens groups.
Step 11. Turn the lead screw so the Group 3 Lens is moving towards the lamp. The lead screw may start to pull up
the bearing assembly the lead screw goes through; simply push it back down into its hole. Figure 3-40
LEAVE these
CUT this
Remove 2x 10-32 x 1/2" screws
from each side (4 total)