Scotsman Modular Flaker Ice Machine Water Condensed 395lbs "afe" Questions

...ice maker putting black oily substance in the ice. What needs to be checked?? Scotsman model AFE-400, bought new in 2008. Used in small restaurant. you need to call a refrigeration mechanic ...

Scotsman AFE 400 An oil substance is in the ice. My repair man has cleaned two times Still has black . Do not see it on fresh ice but put in a glass after it melts there is black. Mine is a flaker ...