One of my radiators has gone very sluggish. It is the small size microbore
with twin entry valves. Worcester Heatslave Highflow Combi.

I think I should try a flushing / cleaner. Any suggestions for a good but
cheap solution / method.

I am currently running with all rads off except the sluggish one and it
isn't making much difference.

--


Regards

John



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In an earlier contribution to this discussion,
John wrote:

One of my radiators has gone very sluggish. It is the small size
microbore with twin entry valves. Worcester Heatslave Highflow Combi.

I think I should try a flushing / cleaner. Any suggestions for a good
but cheap solution / method.

I am currently running with all rads off except the sluggish one and
it isn't making much difference.

The cheapest *and* most effective solution would be to remove the radiator,
take it outside, and give it a good wash out with a hose pipe. That is, if
the problem *is* sludge.

Are you sure the pump is ok? Do the other radiators work ok when you turn
them on? Does the dodgy radiator have a TRV? Are you sure that it's opening?
Is the lockshield valve fully open?
--
Cheers,
Set Square
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"Set Square" wrote in message
...
In an earlier contribution to this discussion,
John wrote:

One of my radiators has gone very sluggish. It is the small size
microbore with twin entry valves. Worcester Heatslave Highflow Combi.

I think I should try a flushing / cleaner. Any suggestions for a good
but cheap solution / method.

I am currently running with all rads off except the sluggish one and
it isn't making much difference.

The cheapest *and* most effective solution would be to remove the
radiator,
take it outside, and give it a good wash out with a hose pipe. That is, if
the problem *is* sludge.

Are you sure the pump is ok? Do the other radiators work ok when you turn
them on? Does the dodgy radiator have a TRV? Are you sure that it's
opening?
Is the lockshield valve fully open?
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.


I can' believe it is sludge in the radiator as it was taken off a few years
ago - it is upstairs - others (downstairs) were removed a few months ago
(for decorating ) and serious sludge has not been an issue.

However, with such small pipes I do suspect the pipes are restricted.

Not TRV. Lockshield fully open. Pump fine. Boiler upstairs - all downstairs
radiators work well. I suspect that a dip in a pipe could get sludged up.

I guess I could try my homemade pressure washer - a hose adapter into the
top plug of the radiator. However, with a laminated wood floor I am a bit
paranoid about spilling water.


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In an earlier contribution to this discussion,
John wrote:



I can' believe it is sludge in the radiator as it was taken off a few
years ago - it is upstairs - others (downstairs) were removed a few
months ago (for decorating ) and serious sludge has not been an issue.

However, with such small pipes I do suspect the pipes are restricted.

Not TRV. Lockshield fully open. Pump fine. Boiler upstairs - all
downstairs radiators work well. I suspect that a dip in a pipe could
get sludged up.

I guess I could try my homemade pressure washer - a hose adapter into
the top plug of the radiator. However, with a laminated wood floor I
am a bit paranoid about spilling water.


In that case, I think I'd *still* remove the rad, and flush its pipes
thoroughly. Presumably it's a pressurised system - so you can use mains
pressure to force water through to the valves - opening each valve in turn,
and collecting the resulting gunge in a bucket.

I'd be less worried about spilling a drop of blackish water on laminate that
I would on carpet.
--
Cheers,
Set Square
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It has a header tank (open vented).

Keep the ideas coming - any thoughts on chemicals? It has normally had an
inhibitor in the system.

--


Regards

John



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