Question about Plumbing
Grundfos recirculating pump #UP1542F sku# 59896155.this pump is on my hot water heating system.
I do not know your system but It sounds like a restriction forming in the system. It may be calcium deposits or a valve not closing properly.
Posted on Jun 17, 2014
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Posted on Jan 02, 2017
I'm guessing that you replaced the motor that goes to the pump, not the pump itself. You know the motor works just fine. Is the motor rotating in the correct manner(clockwise or counterclockwise) in relation to the rotation of the pump? Have you checked the pump to see if the impeller is working/rotating? Is the motor hooked up to the pump correctly, so that the motor is turning the impeller? Are all connections to the pump tight, so there are no suction leaks? Have you primed the pump and purged it of any air locks?
Posted on Aug 11, 2009
could you have gotten air into the line and now the pump cavitates?
Posted on Sep 08, 2009
Testimonial: "Thanks a million. Makes alot of sense. How do we get the air out?"
These days it happened to me but it was an electrical problem, but mechanical..When you loosen the center screw, you should try to turn the pump house with the help of a screwdriver (to the right and left) in turn means that the water was blocked by limestone, which is unlocked after you do water to pass through screw without to see if it turns on its own. The water that comes out is very little if it works then closes the screw .. good luck
Posted on Nov 06, 2009
I was ready to pass your question and go to the next person because you said it was making a clicking, and I could not relate or diagnose that type of sound for that kind of pump. Thank God I decided to read to the end where you said rattling sound. that is what you should have said in the beginning.
1st, did you replace the pump cartridge or the whole pump unit? 2nd, is the pump in a different oriented position than the original pump position? The inner cartridge floats inside the pump as it rotates and if it is in an oriented position that allows it to bounce (to & frow) it will make this rattle sound; not serious but can be annoying. It is was a replacement cartridge, perhaps the new gasket and the old gasket are in place, thus allowing too much space for the cartridge and it therfore moves too much and rattles. Or, if it was replaced as a whole new unit. there is a problem with it that you should not be responsible for, except for the positioning orientation. Finally, if there is still too much air in the system, the air bubbles will jossle the cartridge untill you get rid (bleed ou ) the remaining air. Goodluck<Macgivor
Posted on Jan 02, 2010
if the pump is 220v make sure that both fuses in the unit are on. If both fuses/breakers are good and the unit isn't pumping water the unit may have froze up. Remove the power from the unit and try to manually rotate the motor shaft at an attempt to free it up. If that doesn't seem to work the bearings may need to be replaced.
Posted on Jan 17, 2010
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