I have a 1988 Kollmann Marine frig/freezer on my boat. It has two separate systems; a 1-1/2 ton water cooled engine drive system and a 1/6 hp hermetic compressor system. Both freeze a single holding plate. The engine drive system has a water cooled condenser; the hermetic system has an air cooled condenser.
Richard Kollmann has been in the business for a long time. He knows his stuff.
1988 PSC 34