Question about Grundfos Hardware & Accessories

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With a recirculation pump, can I remove the motor housing and impeller to replace, or do I have to remove the entire unit?

It is a Grundfos UP15-18B7

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  • 49 Answers

Normally you can just replace the motor with out changing the entire unit. A new gasket should come with the new motor.

Posted on Oct 24, 2019

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6ya6ya

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Posted on Jan 02, 2017

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gary1121

gary miller

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SOURCE: grundfos recirculating retro fit hot water out of the cold side

they have it installed wrong it is pulling from the wrong side, it is supposed to pull ot water up to the fixture but then if it stays hot on the cold side they are backwards

Posted on May 29, 2009

Anonymous

  • 124 Answers

SOURCE: water works spa pump- need to remove wet end...

Most of these are reverse threaded. There should be a place on the shaft that is flat on 2 sides a 1/2" or 9/16" wrench will fit into the slots. If not look at the back for a place to use a hex key. Hold the wrench/ hex key stationary with the Impeller facing you turn clockwise.
I know this sounds backwards but it should work.
Hope this helps
Please leave feed back

Posted on Dec 01, 2009

agseesyalook

  • 16 Answers

SOURCE: how to remove the impeller off my Type UP26-96F

Most of these style knock off in a counterclockwise direction. The impeller is usually threaded onto the shaft that way. A small brass drift and hammer should move it easily.

Posted on Jan 10, 2010

Testimonial: "Thanks guys-I didnt want to risk damage to the impeller before knowing for sure. (good work!)."

Pete

  • 106 Answers

SOURCE: trying to replace motor cant figure out how to remove impeller,

Might be a screw in middle of impeller with reverse thread. If so, remove. Remove back cover of motor, hold center shaft with wrench and unscrew impeller from shaft.

Posted on May 05, 2010

MOTORWIZJ

Jay Finke

  • 1389 Answers

SOURCE: I HAVE PROBLEM REMOVING THE IMPELLER ON GOULDS

GOULD ..OH BOY HERE WE GO... YOU MUST HOLD THE SHAFT AT THE BACK OF THE MOTOR WITH A 7/16 TAKE THE CAPACITOR OFF (LOOK AT HOW WIRES ARE ROUTED ) OR 1/2 INCH WRENCH THEN UNSCREW IMPELLER..
>BEST TO BRING IT TO YOUR LOCAL POOL PUMP MOTOR REPAIR GUY OR PUMP REPAIR ,USE YOUR ZIP CODE IN YOUR SEARCH.. DON'T TRY TO REPAIR THIS IF YOU BREAK IT IT WILL COST YOU !

Posted on May 20, 2010

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1 Answer

Grundfos stopped circulating.


At approximately $238.95 new, it pays to do a bit of troubleshooting.
Below are some sites that may help:

http://www.plumbersurplus.com/Brands/Grundfos/74

http://waterheatertimer.org/Water-heater-recirculation-system.html#Grundfos


There are no repair parts for these pumps, and nobody at Fixya has reported taking Grundfos apart and repairing it.

Jan 21, 2013 | Grundfos Comfort System Recirculator ...

1 Answer

The circulation pump making noise.


Question posted under Grundfos recirculation system.
If pump is making noise, then air or sediment is probably trapped at the impeller.
Remove pump, and connection between hot-and-cold pipes and clean with white vinegar.
Or use CLR but do not soak parts in CLR or it can cause damage.
Additional Resources:
http://waterheatertimer.org/Water-heater-recirculation-system.html

Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 06, 2011 | Grundfos Comfort System Recirculator ...

1 Answer

TDA200 Recirculating pump how to replace impellor


There are a number of screws on the pump housing opposite the motor that can be removed to open the pump and expose the impeller. Some pumps have a screw into the center of the shaft that helps keep the impeller from spinning off the shaft. It often is a left handed screw. Once any center screw is removed the cover on the other end of the pump should be removed to expose the end of the motor shaft. This end of the shaft should be held solid with a wrench while the impellor is unscrewed. These threads are usually right handed. The process can be reversed with a new impeller. I hope this helps.

Aug 13, 2011 | Pool & Spa

1 Answer

Pump is whining and making very loud noise.


Install air vent?
Clean pump impeller with white vinegar?
replace pump?

Troubleshoot resources:
http://waterheatertimer.org/Water-heater-recirculation-system.html

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Dec 27, 2010 | Grundfos Comfort System Recirculator ...

1 Answer

After replace the cold water pipe line, my Grundfos recirculator pump does not work anymore. I have to wait 3 min to get hot water. Do you know anything wrong here? Thanks


Many times when pipes are worked on, the work loosens sediment that was built up in the pipe.
Sediment is probably why cold water line was replaced.
That's why faucet aerators get clogged up after pipes are worked on.

It sounds like your grundfos pump got clogged too.
Immediately unplug the pump so motor is not overheating.
Motors are meant to turn freely and can be damaged when blocked.

Take apart the pipes at grundfos pump and see if you can clean out the line.
If line cannot be cleaned or pump doesn't restart, then the grundfos has to be replaced.

Also look at adjoining pipes and see if there is a clog in nearby elbow, especially where galvanized and copper pipes join..

Dec 26, 2010 | Grundfos UP15-10B5/ATLC 1/25 HP ...

1 Answer

Grundfos recirculating system. Never has produced semi instant hot water at sink it is installed on. Could the original comfort valve be defective


http://waterheatertimer.org/Water-heater-recirculation-system.html

The circulation system should draw hot water directly from the water heater as shown on illustrations on link above.

The Grundfos pump works on a thermostat, and some work on a timer.
Can you hear the pump working?
There should be a humming sound.
Check the timer -or- thermostat setting.

It is possible the lines are clogged with sediment if you have hard water.

If I was going to fix the problem:
1) check thermostat or timer
2) listen for pump sound
3) check electricity going to unit
4) take apart the pipes and inspect for clogging
If there is a clog, I would flush the line or soak the part in CLR (calcium lime rust remover)

The circulation pumps are sealed and there is no way to take apart the motor, timer, or thermostat for repairs.

add a comment if you need more assistance.

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Grundfos submersible well pump with Grundfos CU301 control. Control box shows no contact to pump. What is the problem or problems?


Grundfos is a p. o. s. I have a new system cu 301 and I have had to get it repaired twice by Fogle Pump and Supply. These guys are real rip of artists in Washington State and should be reported to the BBB. Dont Use Fogle if you need a well

Sep 15, 2010 | Grundfos RCP-96 Recirculation Pump for...

1 Answer

Pump gets very hot. Water not


That would be my guess. If water is not circulating then that points to impeller problem

May 10, 2010 | Grundfos Comfort System Recirculator ...

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