Whistling/squealing Series 100

Glenn Harrison

you replace the whole pump, if for no other reason than the fact that if you replace only the bearing assembly on that old pump, Murphy's law will kick in and in 6 months the motor will go and you will now have spent more than the pump itself would have cost, plus the aggrivation of two beakdowns. Is there any way you could take a picture of that pump and the name plate and post it on the wall so we have a little better idea of what you've got there?

Hope this helps, if you havn't decided already.

Alan_2

whistling/squealing Series 100 pump

A Series 100 B&G circulator (red) is making a high pitched squealing/whistling sound when running.
The noise seems to be coming from the pump housing where the impeller is.
The pump is fairly old with no past repair records available.

I have rebuilt series 100 pumps several times the past and I would like to find out if a worn item in the circulator pump can cause such a noise.
This is the first time I've come across this problem.

The system seems to be properly bled and is heating properly.

Thanks for any insight.

Alan R. Mercurio

Sounds like it might need a little non-detergent oil in the bearing assembly? Not to much and none if it has already been oiled recently.

Your friend in the industry,
Alan R. Mercurio

Oil Tech Talk

Alan_2

Thanks for the quick reply.

Oil seems to be fine and adding a bit more didn't lower the noise level.

I'm looking at the parts breakdown for the pump (BG 106189) and see the 'bearing assembly', which could be swapped out fairly quickly.
According to the info, a new impeller may or may not come with it.
Can the impeller itself cause such a noise ?

Alan R. Mercurio

You're welcome

Al, When you describe it as a squealing noise I don't think that would be the impeller. It may be time to replace the assembly or replace the entire circulator with new water lubricated type. The cost in most cases will be less for the new type.

You have done a good job going as far as you should to this point. however If this is not something you do for a living I would respectfully suggest you call in a pro now. Before it gets cold outside

Your friend in the industry,
Alan R. Mercurio

Oil Tech Talk

Alan_2

Alan - Thank you so much for your replies.

The correct bearing assembly as well as the 007s are in stock at the plumbing house I frequent.
They are open till noon on saturday...

I do just enough to stay out of trouble but will not hesitate to call in a pro when necessary.

Thanks again for your replies.

Alan R. Mercurio

Again, You're very welcome. Be safe and stay warm.

Your friend in the industry,
Alan R. Mercurio

Oil Tech Talk

Terry St.james

try changing the coupler

Have you checked the coupler(hope I am spelling that right) that guy can make a nasty noise.

Mark J Strawcutter

and while you're at it...

change the motor mounts

Mark

Alan_2

Thanks to all who replied.

Need to decide what to do - rebuild or replace.
The pump doesn't even have a Series 100 designation - the ID plate seems to date back to the mid 50s when the house was built.

Alan_2

Glenn -

Thanks for the suggestion.
Having replaced motor mounts, seal kits, etc. on other Series 100 pumps, I am considering a total replacement as you suggested.
Past rebuilds were mainly for the fun of doing it, sortof like keeping an old car running like new again whether or not it makes economic sense.

Haven't gone digital yet so posting a pic is kinda difficult on short notice.

I am also looking at switching the current setup over to a pumping away scheme while retaining the steel expansion tank, which is what we have in the house we live in.
Thanks to Dan's book and the Wall, we can hardly notice it running after some modifications and proper filling/charging of the system.