After 2 years of perfect operation, my Magdrive pump just started tripping
the GFI after 20 seconds of operation. Resetting the GFI and plugging the
pump back in only gets another 20 seconds....

The intake opening of the pump is clear, but I haven't opened the case to
check the impeller for blockage yet. Is this about normal life....time to
replace the pump if impeller is clear?

Thanks for any input,

Jay