Filters and breathers on wind- turbine gearboxes must work under conditions found in no other industrial setting. Gearbox oil, for instance, undergoes large viscosity changes due to a wide temperature span and operating conditions. And then there is potential for a high water content in the oil from humidity and condensation. "Most current maintenance practices are OEM specified, but as units come out of warranty, their owners are driving for more industry standards and specs." The sales engineer made these comments during the recent WindTech 2012 event in Sweetwater, Texas, and provides them as guidelines for O&M techs and system designers regarding care and maintenance of this lubrication equipment.
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