What brand was the compressor that failed, if names can be made?
There's your problem then... I seem to remember Morat's one destroying itself in short order after he fitted.
Contrary to what you'd expect given most of the EAS system was Dunlop, the compressor isn't. The originals were a modified version of a Thomas 315 compressor from the US from memory. The Dunlop compressors really don't seem to be good as the originals unfortunately