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Armsrtong 1/12 horse pump noise

My armstrong pump is making a lot of rattling noise from teh middle bearing area (i have been adding the drops of oil 2 -3 times a season), and it is about 4 years old, pumps the water from my boiler to the rads in the house. could the bearing be shot already ?

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I bled air from the rads attached to the system and now the noise is gone from my circulator pump

Posted on Dec 04, 2008

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One of my 3 Grundfos UPS 15-58 FC pumps on my heating system has a slight rattle and is running very hot. The temperature drop across the pump is also much greater than that of the other supply side...

In most cases the impellers are what fail in these pumps. Generally speaking if a bearing is going out you won't have a heat difference you would have a pump that fails to run due to overheating of the thermal overload or the circuit breaker tripping. You can test the pressure to see if it's the same or close to the others 15% or more requires a replacement of the impeller.
Running these pumps without fluid will also quickly destroy impellers within 10 minutes. They require that fluid to stay cool.

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Where is the reset button for the armstrong circulating pumup s 25 bf located?

There is no reset... if you have power and it is not running then the pump is toast...

replace it...


Apr 30, 2011 | Armstrong Tool Armstrong S25 BF InLine...

1 Answer

Rattling noise during operation

Often a rattling noise is because of a check valve in the system making noise...


Jun 10, 2010 | Plumbing

1 Answer

Making noise but working good


Either you have a noisey bearing, or the fan on top is rubbimg against the cover. My neighbor's pump has been making noise for several years now, and the pump seems to do fine. If the noise gets worse, I'd look at changing the bearings.

Best regards, --W/D--

Aug 21, 2009 | Jet Plumbing

1 Answer

Pump making lots of noise but working good

Bearings maybe worn out or needs lubrication. It may breakdown any time and cause the motor windings to burn out which is the worst case scenario if the motor is not equipped with an overload relay. With these, I strongly advise you to replace the bearings as standard operating procedure to prevent a costly repair or even total replacement of the pump. Don't be satisfied with the pump working good despite the noise it produce.

Aug 21, 2009 | Plumbing

1 Answer

My pump is making a noise that I am trying to get rid of. I added the oil to the top of the pump (is this correct)? I have been trying to get rid of this noise for three days..please help

you should call and contact Bell & Gossett .(847)966-3700 Address: 8200 N. Austin Av. Morton Grove,IL 60053. Ask them that if the part no # 103400 Price $260 fits for your pump Good luck.

Jan 21, 2009 | Armstrong H 67 1PH Bf In Line Circulator...

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