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Hi, I have a Grunfos mq cold water booster pump. It is cutting in and out when the water is not in use, Turns on for 15 seconds tehn off for a minute. I have checked for obvious above ground leaks which there are none of. Thank you for your time Cian

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Anonymous

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Posted on Feb 19, 2011

Anonymous

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First check with a pressure gauge to see that the pressure is, indeed, dropping. Then, if it is possible, turn off the outlet valve to isolate the pump.
If pressure is still dropping, there is probably a check valve on the inlet of the pump that prevents water from the high pressure side from leaking back to the inlet piping side.
To test this, let the pump run and pressurize the house and immediately close the valve for the incoming water. If the pressure holds, then open the inlet valve and see if the pressure drops. If it drops, the inlet check valve has to be replaced (or cleaned).
Gary

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Need new non-return valve for Grundfos MQ3-45 where do I find it

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copy and paste
https://rainwaterequipment.com/non-return-valve-for-grundfos-mq-3-45-or-mq-3-35-booster-pump/

https://www.pumpproducts.com/grundfos-96526663-non-return-valve-for-mq-booster-pumps.html

..

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Is there a timer for a up1529sf?

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http://waterheatertimer.org/Intermatic-timers-and-manuals.html#TN

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

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Hi, I have a Grunfos mq cold water booster pump. It is cutting in and out when the water is not in use, Turns on for 15 seconds tehn off for a minute. I have checked for obvious above ground leaks which there are none of. Thank you for your time Cian

1 Answer

Anonymous

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Related Questions:

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Plumbing

Need new non-return valve for Grundfos MQ3-45 where do I find it

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Trustworthy Expert Solutions

Hi, I have a Grunfos mq cold water booster pump. It is cutting in and out when the water is not in use, Turns on for 15 seconds tehn off for a minute. I have checked for obvious above ground leaks which there are none of. Thank you for your time Cian

1 Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

Need new non-return valve for Grundfos MQ3-45 where do I find it

Hi, I have a MQ-3-45 and is leaking water from the under part of its base

Is there a timer for a up1529sf?

Grundfos MQ pump starts every 15 seconds

I have a problem with mq booster pump every 10 seconds kicks back and kicks on i am check the showers no leaks everything is ok please tell what can be a problem

Problem with mq pump

When I turn on the water in the house, my pump will turn on and begin running for about 15 seconds, it will turn off for about 2 seconds, and then turn back on for another 15 seconds. It consistently does...

I have a grundfos mq 35 pump to boost pressure in my hot and cold system. due to loss of water recently pump ran dry and shut down. when water returned the system was restarted and pump reset. we now get...

With the water running the MQ pump runs intermittently

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Need new non-return valve for Grundfos MQ3-45 where do I find it

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