How long should i leave sludge remover in for?

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gordo

hi, i have put Sentinel 1ltr Heavy Duty Sludge Remover into my system last night and was wondering how long it is recommended to leave it in for before draining it again? I have no heat coming from living room, dining room and garage, all radiators have been renewed with bigger and better ones (apparently) and the boiler has just been replaced also but still they don't heat up. 10MM pipe supply a blame and hopefully sludge. so fingers crossed the sludge remover works. any help appreciated.
 
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Dont want to sound negative or anythin but the sludge should have been removed before the new boiler went in.
Where the rads cold before the boiler an rads went in? They may be air locked.
 
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hi, yeah the bottle stats "until water running clear and performing normally" but also stats a maximum of 2 hours for alluminum central heating systems.
Twisted nuts: A guess in hind sight it should have been cleaned but a thought that was part of the process when replacing a boiler but a guess not. The radiators were heating up fine but just thought they were a bit small for the size of the room. The one in living room is an additional radiator so had to be plumbed in.
I took off all the down stairs radiators and blasted them with a real powerful jet wash yesterday to clean any dirt out but they were not bad. What i have noticed is that the inlet pipe is hot to touch but once it hits the radiator its stopped in its track, as if no pressure to force it thru the radiators. Just to give you an inside i was told its a drop down system. The cleaner has not helped what so ever. Also when i switch of all the rads up stairs the new radiators start to work but not as good as they should. Guys any insight or ideas is much appreciated !!! cheers
 
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what boiler and system do you have?

sounds like you need to first try to balance the radiators to see if that helps. If i does not it could be a number of things like undersized pipework, blockage's, poor pump performance etc.....
 
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Theyre just air locked.

Turn them all off at the valve, just one side will do.
Now open just one rad, fire system up. When this one gets hot turn it off at the valve and open another radiator up. You should hear a lovely gurgling noise, like your belly just before dinner time. This gurgling should be music to your ears, cos its a good sign.

Do this with all rads then turn them all on at the valve. Should be up and running again.
If this doesnt work you can try an pull the air locks out at a rad valve but you may not need to do this if the above method works.

When theyre all working you will probably have to balance the system to make sure all rads get equal pump distribution.
 
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i'm no expert, but try switching off all the upstairs rads for example to increase flow to the blocked/slow ones.

also fit a Fernox TF1, can't recommend them enough.
 
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mrlennie said:
And what occupation are you in at the minute my friend?
Click to expand...

not plumbing? why have i got it wrong? that's why i said i'm no expert but i see 'twisted nuts' suggested a similar thing just before i did.

from experience, after a flush on my system i had 2 rads that weren't working so i switched all the others off and turned the pump up to full, they started working again, then i bleed the system again. seemed to work.
 
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Rick the Spud said:
not plumbing? why have i got it wrong? that's why i said i'm no expert but i see 'twisted nuts' suggested a similar thing just before i did.

from experience, after a flush on my system i had 2 rads that weren't working so i switched all the others off and turned the pump up to full, they started working again, then i bleed the system again. seemed to work.
Click to expand...

Just a polite joke my friend i was hoping you would say you are a TF1 salesman. Your advice is bang on
 
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haha, not me mate, sorry. just a simple farmer.

used a bit of common sense and online searching to find out how to flush my own system after BG quoted me £1200 to do a powerflush and re-pipe certain sections. see my thread...
'What's the worst case if I leave Sludge Remover in permanently ?' (sorry, can't post links yet?)
a few hours work and it's running sweet as a nut!
 
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I did have a look at your thread mate yes nice work i find all you farmers to be very good at turning your hands to anything like DIY, mechanics, shooting...

I can't quite believe bg quoted you £1200...whats the world coming to???
 
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