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C. Vertical Travel
The vertical travel spring tension is set at the
factory (ceiling and wall mount models) and should
not need adjusting. However, if an adjustment is
necessary, use the following procedure. See fig-
ure 3-4.
Figure 3-3. Lighthead Roll Adjustment
2. Rotate the lighthead until a set screw is
visable through the adjustment hole and loosen the
set screw with an allen wrench.
3. Leave the allen wrench firmly seated in the
set screw; this will hold the adjustment nut captive.
Slightly rotate the lighthead clockwise (viewed
from the yoke side) to decrease tension and coun-
terclockwise to increase tension, as necessary.
4. When proper tension has been achieved,
retighten set screw and remove the allen wrench.
B. Lighthead Roll Adjustment
1. Locate the adjustment hole in the bottom of
the support arm collar. See figure 3-3.
CAUTION
Be sure electrical power is "OFF"
SUPPORT ARM
COLLAR
ALLEN
WRENCH
BALANCE
MECHANISM
SPRING
ADJUSTMENT
NUT
LOWER
SUPPORT
ARM
PIN
PUNCH
ADJUSTMENT
SLOT
Figure 3-4. Vertical Travel Adjustment
1. Pull the lighthead downward until the ad-
justment nut is visible through the adjustment slot in
the support arm.
2. Insert a pin punch through the adjustment
slot and into one of the holes in the adjustment nut.
Using the pin punch, turn the adjustment nut clock-
wise to increase the tension, counterclockwise to
decrease the tension.
3. Test vertical travel and repeat adjustment
procedure as needed.
