Chiller overload relay

[cdc84]

I have a Pacific Coast CL650 chiller that has a bad overload relay. When I bridge the connection the chiller works great but when I use the relay it doesn't.

Any idea where and what type of relay I need? I have found some online but they are all different ratings.

http://i190.photobucket.com/albums/z320/carlcammidge/cjiller.jpg
http://i190.photobucket.com/albums/z320/carlcammidge/chiller.jpg