Kipp&Zonen 2AP Sun Tracker - Manual (Page 38)

INSTALLATION AND SETUP
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4.5.4 Pointing and Shading Ball Assembly
The Pointing and Shading Ball Assembly is comprised of several components which, when
assembled to the 2AP, provide a mechanical assembly to ensure accurate shading during normal
solar tracking operations, see figure 4.20.
Figure 4.20: Pointing & Shading Ball Assembly
Section 4.5.6 contains more information on the recommended Rear Mounting Plate layout for the
pyranometers to operate in conjunction with the Shading Balls.
Listed below is a recommended sequence of assembly:
• Install the Lower Pivot Bar on the underside of the chassis bottom plate with designated
screws, see figure 4.21.
• Attach both the Shading Drive Arms with the designated screws. Ensure the counter
weights are facing down. Do not completely tighten the screws yet, some room for installing
the T-bar is required, see figure 4.22.
• Install the T-Bar (without ball rods) as shown in figure 4.23. Install the plastic shoulder
washers onto the threaded studs of the T-Bar. Insert the shoulder washers into the side arm
end holes. Install the outer flat washers and the locking nuts ensuring that all the bushings
are properly seated into the side arms. Only loosely install the locking nuts at this stage.