Is this water pump short cycling?

[MrBen]

Hi,

Just joined to ask this, so sorry if I'm in the wrong place. I'm a homeowner (read: idiot) with a water pump making a... funny noise.

I've taken a video of it, here:


It's only started doing it recently. It does it for 5-10 minutes after the hot water's been running for a while, like after a shower.

It doesn't sound like a healthy thing for a water pump to be cycling on and off every few seconds like that. Google tells me that "short cycling" is a thing and it might have something to do with air in the pressure tank. How worried do I need to be, on a scale of "it's fine, you numpty" to "evacuate the street"?

Thanks.

 

[steadyon]

1. Not dangerous, but if not resolved could damage the pump.
2. Likely to be an air lock in the system somewhere. See various threads on removing air locks.

 

[MrBen]

Thanks! I'll have a read up.

 

[king of pipes]

Can you post a picture of where the hot pump supply connects to cheers kop

 

[MrBen]

Hi - thanks for taking a look. I've taken a few photos below, let me know if you need any more info.

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[king of pipes]

The pump is not fitted to the manufacturers specification this is how it should be done . cheers kop