[Junior Guru]

I've been storing my coach for the past month and I went to check on it today and noticed the compressor going on every 15 min.  It looks like I've experienced my first air leak with what looks like a small water separator or air filter.   See pic.  

This separator is under my passenger bedroom slide in the compartment in front of tire.  

Can this be fixed or do I need to replace it?   Any help or advice is appreciated!

Or, if there is already a thread discussing this I'd appreciate pointing me there.  I couldn't find one.  

Thanks
Jason