I don't think thats normal behavior for any kind of pump, although I have heard that those new Intex pumps that come with the pools are very under powered. Have you checked to be sure there is nothing blocking the pump or its screens and that all the air has been bled out first? I think they have an air release somewhere. Air in there will cause it to overheat and then it can burn out. Sounds like that may be whats happening. Also, does that pool have a valve at the return or inlet to the pump that may be blocked or shut? You may want to check all of these items.