Water Pump

[sparkz]

Hi.....just need some advice and info. I think iv got a problem with my Grundfos water pump, it keeps on buzzing and i can here water rushing through the pipes so often. Also all the heaters are working apart from downstairs. Could this be a faulty water pump?

Appreciate your help

 

[sonray ltd]

can be a pump, airlock, blockage.

turn the pump up to top speed and try it.
you can also try shutting the hot rads see if the cold rads then get hot.
if they do re-balance the other rads back into system.

 

[sparkz]

Cheers fella. Iv drained all the downstairs rads and their all working now. But the water pump is still buzzing away and really hot. Is it worth replacing the water pump.

 

[sonray ltd]

is it buzzing on all speeds ?
how old is the pump ?
have you tried bleeding the pump ?
the pump should be no hotter than the flow pipe if no air in system.

and if all upstairs and downstairs rads are working that tells me the pump is running ok.

 

[sparkz]

The rads are warmer than before but have not reached peak or the usual temperature. The pump is buzzing at all speeds and its about 4/5 years old. How do you bleed the pump?

 

[sonray ltd]

turn the system off so pump not running and remove the centre screw.
just hold a rag underneath it then replace it and try.
but i don't think its got air in it.

shouldn't be knackered after 4 yrs etc.

 

[sparkz]

turn the system off so pump not running and remove the centre screw.
just hold a rag underneath it then replace it and try.
but i don't think its got air in it.

shouldn't be knackered after 4 yrs etc.

Awesome done exactly what you said........ All rads are working. The water pump sounds like normal now. Cheers mate

 

[sonray ltd]

what was it air ?

 

[sparkz]

All i did take off the centre screw and let the water out for few minutes. Could you explain why i had this problem. Cheers

 

[sonray ltd]

not knowing the history of the system, air can be being drawn into the system through the vent pipe, the system may need a good clean out due to muck in the system over the yrs.
quite a few reasons for air in systems.
if its the first time its happened and the system is a pretty trouble free system don't worry.