Exactly what kinds of failures have people been having on the APsystems RSD units? That's what I've been using when I encounter a roof (mostly because of availability with my distributors, but also being able to easily tuck them into the channel instead of having to mess with bolts or clips). I have not had any failures that I know of yet... but depends on what their failure mode, failing open or closed or what. If they fail closed, it would not be apparent till someone tested or tried to use the RSD system.
Zeke -- Zeke Yewdall PV Engineer NABCEP #031508-89 [email protected] 303-523-3592
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