Thermatrol Series compressors

Hello again, Its been awhile since I last visited!
I was hoping to download some technical data on:

Grasso Thermatrol compressor
Model # FC-15-20-22-25-777
This is a water cooled refrigeration station.
I need to add some hot gas bypass and possibly replace
the end bearing or oil seal or what ever prevents the oil from leaking out on the pulley end of the compressor.
Any help would be appreciated.
I've googled this compressor with no luck.
Thank you
Bernie

800-821-3486 is the phone number for FES Systems (Grasso USA) where the Thermatrol compressor are made.