We have three 30 Ton Trane M/N TEH360A4AY0A5BA10 rooftops that we installed in 2009. Since then we have had at least 6 condenser fan blades and at least two condenser motor failures. Most originate due to a separation of hub from blade. The thinking is the fan is not on, is windmilling backwards from those that are on, and when energized, the inertia damages the fan hub.
I did a search but found nothing on this particular model Trane, but did see pics of damage on an RTAA.
Has anyone experienced this problem?
These are critical care RTU's that must run. So we have to resolve this issue as soon as possible.
Any helpful responses are greatly appreciated.