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noisy circulation pump

1700 Views 5 Replies 4 Participants Last post by  Lightfoot
The circulation pump in my home is about 5 years old. It has been oiled on a regular basis and seems to have taken a liking to making sound now and then that would lead me to believe the bearings are shot. This consistent noise will occur for about two minutes then quit and become nice and quite for a half hour or so. While the noise is happening, I can lean on the motor and the noise will quit until I let up/off.

What's the diagnosis here? Do I need a new pump or should I mess with the bolts securing the pump to the water pipes?....
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In my neck of the woods, 5 years on an oil maintained residential pump is a short lifespan. While there are some tricks for reducing the noice, you might as well change it or at least have a spare pump on hand for that inconvinient holiday breakdown.
It sounds like you should also consider flushing out your system when you do change the pump.
Hi Lightfoot
I've found that the spiral form couplers seems to tolerate that age related misalignment much better than the twin bar & spring couplers and they are quieter as well.
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