What is this noise from the pump?

[usfdan]

Good morning,

My pump (Max-E-Pro 1.5HP) was installed October 2019 and started making the noise in the video linked below. Filter basket is full with water with a few tiny bubbles floating at the top, but those have been there for quite a while. No bubbles coming out of pool returns. Backwashed and refilled DE yesterday, no change. Took it to Pinch-a-Penny since it's still under warranty and they checked the inlet port for clogs, changed the cap (it didn't appear blown), and they hooked it up to their 110 and the pump ran smooth in the store (the pump is on a 240 breaker). Reinstalled pump and checked all wire connections and no change in noise. What could the issue be?

IMG_3219

Watch "IMG_3219" on Streamable.

streamable.com

Thanks,
Dan

 

[wireform]

Remove the back end cover that's where the noise is coming from.

 

[setsailsoon]

Doesn't sound like a bearing or cavitation to me. Sounds more like something loose is vibrating in or near the electrical connections under the rear cover or a bonding wire that's close the the end cap of the motor.

 

[usfdan]

Thanks everyone for the responses so far.

I removed the back cover and ran the pump, but the noise is still there. I also checked all electrical connections, including the bonding wire, and all are secure. I also pushed down on the pump to make sure it wasn't vibrating against the platform, but no luck.

With the back cover removed it's clear that the sound is coming from inside the pump from the motor. I'm going to have Pinch-a-Penny come out and take a look since it's still under warranty (still have the pay the $125 trip charge unfortunately).

Thanks,
Dan

 

[RDFBocephus]

Go BULLS! That is all.

 

[usfdan]

Go BULLS! That is all.

 

[CrystalRiver]

That's a 240 volt pump, and they connected it to 110 volts at the store? That's horribly hard on a motor. Drastically shortens the life. Don't let them (or anyone else) do that again.

 

[JamesW]

That's a 240 volt pump, and they connected it to 110 volts at the store? That's horribly hard on a motor. Drastically shortens the life. Don't let them (or anyone else) do that again.

If it's a dual voltage pump, I would hope that they switched it to accept 120 volts before applying 120 volts.

 

[kadavis]

Sounds like the bearing may be starting to slip on the endbell, hard to tell but testing the motor when it isn't under a loaded condition won't show this condition