NRG INSTRUCTIONS
SRA System | Soiling Measurement Kit
SRA Soiling Measurement Kit Instructions
Rev. 6.0
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19 December 2018
Attach lower U-bolt to the tower at this location and 90 degrees clockwise of the upper U-bolt. Insert
inner bracket and spacers onto the ends of the U-bolt. Place outer bracket and angle boom through the
ends of the U-bolt (Figure 1-9). Tighten nuts with 3/4” wrench. Do not overtighten.
Figure 1-10: Location of lower U-bolt measured from the upper U-bolt.
1.6: Adjust the PV panel angle.
Adjust the panels to your desired angle using the angle boom and verify with angle finder (Figure 1-11).
If the boom does not slide freely, then bolts in the system may be too tight. Ensure that the bolts are
loose enough to allow movement.
Figure 1-11
