The pump is running but no water
The pump is running but there is no water
Self-priming automatic electric pumps with helical gears, produced by Marco.
Prime the pump
From the day that I installed the UP6/E it was difficult to get it to prime, even when I was just switching tanks. I kept relocating the pump lower towards the water tanks. I checked for suction leaks and even replaced hoses.
I eventually found that the check valve on the pickup side of the pump was bad. It had a tear in the plastic body of the valve that kept it from preventing back flow. I have not found a source for a replacement valve, but I folded the plastic piece back together and reinstalled it.
It primed in mere seconds for the first time since I owned it (5 years about).
You can find the check valve right in line with the water supply line where it hooks up to the pump. You’ll notice that this hookup looks slightly longer than the discharge hookup on the other side. That’s because the water supply side is made up of two parts. Take off the two parts and unscrew the two parts to find the check valve. It might just be jammed in the open position or deformed or damaged. My valve was a pain to get out due to water scale buildup. It’s probably best to get the pump on a well lighted, clean workbench right off the bat.
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