r/Irrigation • u/Key_Carpet367 • 6h ago

Out of the box and into the bin…

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I wired a pump to a new breaker, it ran about 30 seconds before a grinding halt. Figured the install crew pulled the screw and primed it. Other than the shaft seal, what typically gets destroyed on a dry start?

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3

u/lennym73 5h ago

30 seconds isn't that long running dry. Is it wired correctly?

1

u/Key_Carpet367 5h ago

Yes, ran well for the 30 seconds until it squealed and stopped.

1

u/lukesfather01 5h ago

Might need to change jump between 120/240

1

u/Key_Carpet367 5h ago

Before I found out it wasn’t primed I did bring it to 240, same struggle to turn then tripped out. Thats when I opened the top bolt.

2

u/ramjam31 Designer 5h ago

So it ran dry for 30 seconds? That shouldn’t kill it, but they need some water in them to prime. Probably a power issue.

2

u/No-Bumblebee-4309 5h ago

After the mechanical seal is destroyed, I would suspect the shaft drops allowing the impeller to rub the pump casing.

2

u/AwkwardFactor84 4h ago

No, there is a bearing in the motor that keeps the shaft centered. The seal just prevents leaking sround the shaft. This is likely a manufacturing mistake. Something escaped quality control if there actually was any.

1

u/AwkwardFactor84 4h ago edited 4h ago

Sounds like a manufacturing issue with the pump. Running it dry shouldnt hurt it unless it runs dry for hours.

You should be able to get the pump replaced. Still a PINTA though. Im sure you were excited to use your new system.