Originally Posted by
ca1ore
I run 5 flow sensors, and about every two weeks or so one of them reads zero. My first recourse is to turn off the pump/drain, then turn on again and the 'blast' of water sometimes restores function. I've also had to remove the sensor and observed a physical obstruction that was easily removed. One two occasions, the paddle wouldn't turn, but there was no obvious obstruction. This required disassembly of he sensor. It's not hard, just a matter of removing the screws. In both cases there was debris lodged in the holes that the paddle spindle fits into. There was also some corrosion on the spindle. Clean out the holes with a toothpick and compressed air and smoothed the spindle with 2,000 grit Emory cloth.
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