Abstract: The present invention provides a multi-stage coalescing filter for separating coalesced liquid from an aerosol-containing gas stream. The multi-stage coalescing filter includes an end cap having a chamber formed within and a plurality of coaxial, nested, tubular filter elements supported upright on the end cap. Pairs of successive filter elements are spaced from each other such that the end cap between pairs of successive filter elements forms respective annular sumps for collection of coalesced liquid separated by the filter elements from the aerosol-containing gas stream as it passes radially through the nested filter elements. The chamber has one or more inlets in fluid communication with the or each sump for receiving the coalesced liquid from the sump, and further has one or more outlets for guiding the received coalesced liquid out of the filter.

Abstract: A method of servicing, or repairing a crack in, a dovetail portion of a dynamoelectric machine's rotor coil slot wall. The coil slot wall includes a radial entry surface connected to an inwardly tapered surface. The inwardly tapered surface is connected to an intermediate radial surface. A machining step machines a first groove in the radial entry surface and inwardly tapered surface. The first groove extends linearly to the intermediate radial surface. The first groove is configured so that a smooth and linear surface is created along a length of the first groove. A second machining step machines a second groove in the intermediate radial surface in an orientation substantially perpendicular to the first groove. A portion of the second groove contacts a portion of the first groove. At least one of the first groove and the second groove are configured to remove damaged material from the coil slot wall.