Winterizing a Vitrifrigo ice maker

Jun 5, 2004
20
-Beneteau Oceanis 51.1 Chicago, IL
The boat came with a Vitrifrigo freezer which has an ice maker. How to winterize the ice maker?

The ice maker requires that the boat’s water pump remain on to make ice, as the ice maker doesn’t have its own pump. The water supply attaches to a liter-sized filter, with a thin hose to the ice maker. Even if I wanted to fill with pink stuff, which I do not, how to get around that water enters the ice maker only during the beginning of each ice making cycle?

Is there a way to drain the ice maker? Must pink stuff be used?

The Vitrifrigo manual is silent as to winterizing.