radiance 7201111, Instruction Manual, Page: 7 / 26

RAD/05
LAMP INSTALLATION AND OPERATION
(continued)
ONCE THE LAMP has reached full brightness, project a spot on a wall or similar
vertical surface opposite the spotlight position. Loosen the two thumbscrews and remove the adjustment
mechanism cover (F) from the back of the lamphouse to expose the lamp positioning controls.
Focus Screw
Focus Lock Screw
Positioning
Lock Screw
LOOSEN THE TWO positioning lock screws to permit moving the entire mechanism on
the back of the lamphouse. Look at the projected spot and observe the movement of the brightest point
of light inside the spot as the mechanism is moved. If no distinct bright spot is visible, rotate the focus
screw in the center of the mechanism until a clearly defined “hot” spot is seen. Move the mechanism
until the “hot” spot is centered in the spot. Tighten the two positioning lock screws. Rotate the focus
screw to diminish the “hot” spot and create a uniform “flat” pattern of light in the projected spot.
WHEN TRANSPORTING THE FOLLOW SPOT, or if the lamp may be subjected to
a hard shock when moving to another location, remove the metal halide lamp from the lamphouse by
reversing the installation procedures. If the positioning control section of the lamp adjustment is not
changed, the lamp should be able to be replaced without repeating the aligning procedure.