I think you have a sanden 709. 7 is the number of cylinders and 9 is the
cubic inch dislacement.Will mount any direction.If the compressor has not
been used for a season, the shaft seal probably will leak a bit.New
compressors have only a shelf life of 18 months for this reason, so dont
fret about a small leak here.If you have a westy, consider removing the
cabinet where the a/c is.The unit can stand a cleaning and resealing of the
cabinet contents with foam strips(as big a job as it sounds).