Leveling The Tower; Leveling The Tower - SkyStream 3.7 Owner's Manual

8
Five - Leveling the Tower
Leveling the tower is most easily accomplished using only four of the eight foundation bolts. Once the tower is leveled the remaining
bolts can be fully tightened to secure the tower.
Be aware that leveling the tower may require some trial and error adjustments – even though the base is level, the upper tower flange
may be off level due to manufacturing tolerances.
To level the tower:
• Level the tower on a calm day to minimize movement of Skystream. Start by loosening all the upper foundation nuts about a full
turn.
• Loosen and lower the four nuts on the "sides" of the foundation base plate. In other words the tower should be supported by the
four "corner" nuts of the tower base plate. (refer to Fig. 2C, Bolts A and B are "corner" bolts)
• Using two bubble levels set perpendicular to each other on the base plate adjust the foundation nuts until the tower is level.
Magnetic bubble levels may make this process easier.
• Once the tower is level tighten all nuts and recheck level.
Observe the position of Skystream on calm days. If the wind turbine seems to favor a single position with no wind, the tower may
require fine tuning even if it appears level using the bubble leveling technique.
To fine tune the tower realize that the nose cone of the wind turbine will "point" in the direction of the tower low side.Therefore, to
level the tower, slightly raise the side of the tower under the nose cone or lower the side of the tower opposite the nose cone. Make
fine adjustments. Approximately one turn of a foundation nut equates to slightly more than 1/8" (6.4 mm) so even a half turn adjust-
ment will make a difference.