Darryl Keil
Posts: 1445
Joined: 2003-05-22
Location: Maine
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I’m surprised its going into thermal overload quite so soon with the cover off. You should easily get double that. Part of the issue is you are using a fairly high cfm flow pump with very low air flow. Air flowing through your pump is part of keeping it from overheating. There are two things you can do. One, is create an air leak of some kind so fresh cool air helps cool the pump. Not too much that your holding power is significantly reduced though. Second, put a simple household fan on it which will have a big effect keeping it cooler. Like Craig said, going into thermal overload is a safety feature which protects your pump, not a bad thing.
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