Originally Posted by idmtman
My jack works fine until I extend it completely and then the 30A fuse blows. Unfortunately, I cannot quite yet tell when I am about to extend it to it's maximum length so I have blown a couple of fuses. Other than carrying a supply of 30A fuses, any ideas what might be causing this short?
Hello. To make sure I don't extend the jack to it's max I painted a red line on the jack shaft so that when I start to see the red line I stop.
When the jack reaches max either up or down and the limit switches are not set properly the motor is in a lock rotor state and draws a lot of current which blows the fuse.
Good luck nm1oqrz