painfully loud motor 1

[foretmark]

Is there any electrical mechanism that I'm just not able to figure out that would cause a motor running under typical conditions to make an exceptionally loud noise under load? I'm fairly certain it's mechanical, but I'm being told it could be electrical and I just want to rule out anything wierd. It is a pump motor and the pump and motor have both been replaced seperately and together and the noise continues. I'm told it's coming from the motor/pump assy.

 

[rbulsara]

EM noise would have existed from the beginning. OP hasn't indicated if this is a new installation or old. If this setup ever worked correctly? When did the noise start?

At this moment I tend to agree with 1000V.

 

[waross]

Has a stethoscope or similar device been used to check whether the noise is in fact from the motor and not from the pump?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[burnt2x]

Good point, waross! Eliminate which part the noise is coming from, as I understood it.
I have a hydraulic pump which gets noisy when loaded at the workshop before. We singled-out the noise coming from the pump, the motor seems to run well. Turned-out to be an overload on the system and pressure relief partially bypasses and chatters causing the noise.

 

[foretmark]

well, I wasn't there to witness anything, but I'm told a new pump with a lower flow rate fixed the noise problem.

Thanks for all the input....

 

[itsmoked]

Guess we'll never know for sure but thanks a bunch for getting back to us!

Keith Cress
kcress -

http://www.flaminsystems.com