Question about Grundfos Hardware & Accessories
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Posted on Jan 02, 2017
Do you have more than one zone? If so, it is difficult to tell if the circulator in question is actually running. A trick is to get a screwdriver and place the metal end on the front of the circ and the other on your ear. You will hear it if it is running. If you do hear it, is the circulator itself very hot to the touch? If it is, it may be burnt out, or the zone needs to be bled of air. Another doubtful, but possible, answer is that the circulator is installed backwards. There is an arrow on it and it should be aimed towards the flow of water.
Posted on Dec 31, 2009
If your grunfos pump is clogged with hard water sediment, then it probably needs replacement.
You can try soaking it in CLR for a while, but I doubt it can be salvaged.
Sediment adheres to surfaces and there is no way to get inside the pump and scrub it out with a tooth brush.
You might benefit from replacing pump with the type that has a timer. That might save a bit of money. Or you can add a timer to the ordinary grundfos. If pump works fewer hours, it shouldn't clog up as quickly (or so the theory says)
And your water system might benefit by flushing your water heater each 6 months to prevent sediment from forming in the water heater.
Posted on Oct 21, 2010
I would guess that the pump is to recirculate hot water so you have nearly instant hot water. The pump should be set to run during periods of high use. I doubt that pump is wired into water heater controls. I would check setting on heater thermostat and turn up if needed. I hope this helps. Thanks
Posted on Nov 21, 2010
SOURCE: After replace the cold water
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..
Posted on Dec 26, 2010
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