Freeze Co. chillers

[floodedstart]

Anyone have any experience on these chillers good, bad or otherwise?
Any issues with Bitzer screw compressors?

[heatingman]

Havent worked with Freeze co, but have alot of experience with Bitzer Screws, they work vary well, but like any screw clearences are extremely tight, and therefore there is no room for error in oil return and proper viscosity of the same. Also I would avoid there use in colder than normal water temp operation because of oil viscosity issues. Had alot of trouble with Bitzer on experimental equiptment, but I dont think it was the compressor that was to blame, but the manufacturer of the chiller( Rowald Refrigeration ) poor piping layout, and way too much subcooling going on. I belive Bitzer has a very low failure rate 1 Percent or so.

[floodedstart]

Thats good to hear, thanks heatingman. Its a custom machine with a 70 deg F leaving water temp.