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Ok ollski, thanks for that But what about the water, roughly how much should come out with the chrome screw removed-more than a trickle?

about every couple of months the pump on my vented system doesn't pump. So I undo the chrome screw and then turn the inside screw with a screwdriver to free it. The other thing that I notice is that there is a thin arc of water coming from within the centre of the inside screw. I thought...

Ok, I'll give your suggestions a go Ta

Hi all Hope that u can help with this one. Vented system in a flat (on one level) most pipework buried in concrete floor. No TVR's. 2 port valves , pumped system. Problem is: 2 rads not warming up, think that these are off the main circuit (15m off 22m). drained/removed the 2 rads. opened...

Ok thanks Will do some more checks

the fan light on the boiler is on and I do hear the normal fan noise so I presume yes. The pump vibrates slightly and a little warm but I can't tell whether it's working. I presume it was the noisy boiler tripping the electricity because when we switched the boiler off, the electricity...

I have a baxi solo 3 PFL 70 boiler. It was very noisy yesterday, sounded like someone drilling. When I lowered the thermostat on the bolier, the noise was decreased by 50%. By evening, the electricity supply was tripping every 10 minutes, so I swited the bolier off overnight. I switched it...

Is it OK to say 'Golly' these days? ____________________________ Lynda, moderator no problem with Golly

Can't find on the web, do u have web address or tel no? Cheers

Mcdonalds do one with a bend in it!

use a very long straw! No seriously, if u remove the pan without tilting, when removed tilt down at the back and empty water into a bucket or another wc. simple as that

Are all sludge removers much the same? Is Sentinal 400 as good as Fernox? Cheers

just a suggestion but if you are going to drain the system is it not worth changing the pump valves as well, ( probably knackered anyway). Then you wouldn't have to separate the pump and pump valves, only separate were the pump valves join to the 22m pipe which is a smaller nut, must be easier...

thanks again

Thanks for that Harrogate would that be the same with the man. air valve above boiler. ie can u vent with system on?

hi all. just a couple of questions on bleeding a vented system with a Grundfos pump. Can you bleed the pump with the system running ie remove the big chrome nut? The reason I ask is that the service engineer did just that yesterday but looking at all the threads it don't look correct...

Thanks Chris I think we are talking about a black jelly here, I cleaned out the expansion tank at the weekend and there was loads of it. I also drained a rad but it seems to have refilled, I don't know if it's taken water from the exp. tank or taken it from elsewhere in the system?

OK , Thanks for that.

Thanks for your suggestions JD. As an alternative could I cut the 15" pipe just above the tee (to replace the tee would not be easy due to lack of access) and poke around with something suitable?

What is the best way to check for a blocked cold feed on a vented system (S plan)? Also what is the best way to clear the blockage? Cheers