2. After holding time, medium cooling process starts automatically by supplying of cooling water into the jacket of the vessel, water goes to the down port of the fermenter through the opened valve 8. It is possible to inspect water transfer through the inspection window 5. Water goes through the opened valve 9 and check valve 10, after that it is removed to the water return line.
After cooling to the predetermined temperature, water supplying valves are closed and the system proceeds to the temperature control mode.