Preva Installation/Service Manual, 00-02-1577, Revision E01
47
Adjustment
1. Locate the brake assembly at the top of the Control Unit. The brake
assembly has a screw on either side of a clamping bar over the Horizontal
Arm pivot post.
2. Using a 4 mm Allen wrench, as shown in Figure 35, tighten the screws
equally to apply adequate braking to the pivot post so that Horizontal Arm
begins to move after the Articulating Arm.
Figure 35
Tightening the
Brake
Adjustments
The balance and friction of the Articulating Arm are preset at the factory.
During the installation process, check the balance and friction. When moving
the Tubehead, the Articulating Arm should be steady in all positions and
move before the Horizontal Arm. If adjustments are necessary, follow the
adjustment procedures in the
Troubleshooting section.
Note: The mechanical adjustments should not be used to compensate for a
system that is not properly leveled on the wall.
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