I keep my jet ranger within 2 miles of the Tasman Sea. My first machine I water rinsed everyday and then annoyed my neighbours by a 5 minute drying run. In 700 hours replaced three compressors . Bell reckoned I wasn't drying enough!
My next jet ranger was the one I flew around the world . On advice from a crusty old engineer at Bell in Fort Worth only had the compressor washed at the 100 hourlys. Compressor lasted over 600 hours on that unit before exchange even though over 10,000 mn over the ocean at low levels.
Most owners I know just get the compresser split at each 100 hourly and do no washes in between. Get maximum life and safety even though in a coastal environment .