The freshwater generator uses the heat from main engine jacket cooling water to produce drinkable water by evaporating seawater due to the high vacuum, which enables the feed water to evaporate at a comparative low temperature. Steam can also be used as a heat source instead of main engine jacket cooling water.

The distilled water is subsequently extracted using the integral freshwater pump, also known as the distillate pump, and its flow is regulated by a salinometer and a solenoid valve. In cases where the salt content in the produced water exceeds acceptable levels, the solenoid valve redirects the freshwater to the shell side of the freshwater generator while simultaneously issuing an alarm signal.