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backup sump pump does not clear the pit when triggered, normal?

2K views 3 replies 4 participants last post by  handy man88 
#1 ·
My backup sump pump does not clear the pit when triggered, normal?

I have the sensor about 8" from the top, and when I unplug the sumppump and let it fill, they backup will trigger when the sensor is hit, but will only discharge about 10" of water, and then stop.

Is that normal, or is it suppose to run enough to clear the whole pit?
 
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