Wattsun AZ-225 Installation Manual page 17

Step 12
Continue populating the array with the rail
assemblies and solar modules. Even out the
spacing between the module frames (typically 1/4" in
1/2") and square-up the frame assembly. Go back
and tighten up all the bolts and nusts left intentionally
loose.
Start with the rail assembly u-bolts Nylock nuts, then
proceed to the support angle fasteners (if provided)
and finish up with each module mounting bolt and
nut.
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