worcester junior pump head replacemenet query/isolation valv

[stuartpeeke]

The pump has been blowing the 3 amp fuse in the fused spur - so have ordered one up to replace (pump head)

basically, my question is - is it best to drain down whole system or to just isolate boiler flow and return valves under boiler and drain down boiler? I am wary that these can leak when re-opened !

Any tips for draining down a boiler to replace a wet part would be helpful


Thanks for reading

 

[Terrywookfit]

Just drain it.
If you use the iso valves you will end up draining down to replace them.

 

[stuartpeeke]

ok thanks for helping

drain the whole system until it stops then i guess and refill with inhibitor the best bet?

one other thing - the rubber gasket that comes with the pump head creates the seal between head and body, plus i'll use some silicone grease around the gasket to help it - shoulds that be enough as don't wanto to have to drain down again after replacing pump!!!!!?!!

 

[Terrywookfit]

Should be fine.

 

[stuartpeeke]

thanks - will get on with it when it arrives


oh one other thing i noticed/read on here - will a vacuum be held when i drain down so i only drain down some of the system water? or will it likely not as there's 2 open ends on the pump?

 

[Terrywookfit]

Just drain to below the level of the pump.

You will then be able to work at your liesure without worrying.

 

[stuartpeeke]

yeah boilers upstairs so will drain down half (and add half inhibitor)...

gotta make sure i DO drain down under pump though ........ !!!!!

 

[jackecole]

drain until your upstairsa rads no longer release water when bled!! (if they are higher than your pump)!!