Southwest Windpower Skystream Hybrid 6, Installation Manual

 Skystream hybrid 6

TM

 Installation Manual, Rev A

15

20.  Using a compass, find magnetic North.  Adjust the compass by the 

magnetic declination value (while the needle stays at magnetic North, 
rotate the compass counter-clockwise for easterly (+) declinations, 
and clockwise for westerly (-) declinations.  See Figure 11.     

21.  Rotate the sun tracker assembly until the solar panels are facing true 

South (180º from true North).  

Figure 12

22.  Install two spacers, 3/8”-16 x 1-1/2” bolts, and hex flange lock nuts 

(from the hard stop hardware package) on the tower gear in the loca-
tions shown.  See Figure 12.

23.  Install the chain around the tower gear and motor sprocket by install-

ing the master link and attaching the clip.  See Figure 10.

24.  Ensure the assembly is still aligned with true South, and tighten chain 

tension.  Check that chain play is similar on both sides of the sprocket.  
Once desired tension is reached, tighten the four motor/gearbox bolts 
located underneath the frame assembly to lock in place.  See Figure 10.

25.  Install the sun tracker cover assembly to the tower, above the  

sun tracker assembly.  Tighten using the pipe clamp, and install  
the two screws. 

19.  Prior to installing the chain, the solar panels must be facing true South 

(if in the Northern hemisphere) prior to power-up.  True South dif-
fers from magnetic South.  In order to find true South, the magnetic 
declination for the installation location must be found.  The magnetic 
declination value represents the error between magnetic North and 
True North for a specific location.  This value can be represented as an 
easterly (positive (+)) declination, or a westerly (negative (-)) declina-
tion.  There are two ways to find the magnetic declination:

1.  go to: http://www.ngdc.noaa.gov/geomagmodels/declination.

jsp, enter the zip code for the installation location and click “get 
location.”  Then click “Compute declination” and find the declina-
tion in the lower box.  

2.  looking at the following chart, use the blue and red lines to find 

the approximate magnetic declination for the installation location.  
These values vary slightly from year to year, but this chart is suf-
ficient for an approximate value.

MAGNETIC DECLINATION FOR THE U.S. - 2010

Contour Interval: 1 Degree (Positive declinations in blue, negative in red)

Figure 12

Figure 11