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Urgent help Please Combi Care Scale Inhibitor


 
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mikebh50

from United Kingdom

Joined: 30 Oct 2005
Posts: 47
Location: Norfolk,
United Kingdom

PostPosted: Sat Jan 10, 2009 2:16 pm Reply with quote

Hi
Have just changed the above and we now have no hot water have removed the inhibitor and the hole in the fitting appears to be full of scale (we live in Norfolk so very hard water)is there anything i can do.The water shut off knob below the inhibitor does take loads of turns to turn on or off is this right?
Any help would be great

Thanks
Mike
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simond

from United Kingdom

Joined: 26 Oct 2004
Posts: 4069
Location: Surrey,
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PostPosted: Sat Jan 10, 2009 2:26 pm Reply with quote

So you have changed your scale inhibitor out, and it is immediately blocked full of scale.

Surely not?
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mikebh50

from United Kingdom

Joined: 30 Oct 2005
Posts: 47
Location: Norfolk,
United Kingdom

PostPosted: Sat Jan 10, 2009 2:30 pm Reply with quote

Hi

Please see pic

If i turn the blue end on the tap below the fitting no water comes out.Now should i have touched this and if not how do i get the water to flow again.

Mike
mike tap
tap
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gas4you

from United Kingdom

Joined: 23 Feb 2007
Posts: 17604
Location: Norfolk,
United Kingdom
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PostPosted: Sat Jan 10, 2009 7:35 pm Reply with quote

Remove the combi care body from the pipe work. You will find that the fitting is completely blocked, by hardened phosphate from the combi care cartridge.

If you can't clean it out you will have to get another.

This is a very common problem with these, although at present I have only had the Sentinel ones block, even though they are the same thing.

Sentinel blame it on the cartidge assembly being less than 1M from the boiler/heat source, but I have had them block at over 3M away icon_rolleyes.gif
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Softus

from United Kingdom

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PostPosted: Sat Jan 10, 2009 10:04 pm Reply with quote

You're right Dave - near me there's an entire estate of them that block up with the CC more than 5m away from the boiler.

In my experience they're fairly easy to clean out, using twist drills starting at about 1.5mm. If access is awkward then it's easier to remove the entire assembly first.
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mikebh50

from United Kingdom

Joined: 30 Oct 2005
Posts: 47
Location: Norfolk,
United Kingdom

PostPosted: Sun Jan 11, 2009 10:28 am Reply with quote

Hi
Thanks for the replys i cleaned the small holes out with a twist drill and we now have hot water but i don't know if its worth getting a new fitting as i don't seem to get any water out of the small bleed screw on top of the cartridge so i was wondering if the water was just going striaght up the pipe and missing the cartridge if this is possible.As for distance from boiler the cartridge is under the sink one side of the house and the boiler is in a cupboard upstair right on the other side of the house.

Thanks
Mike
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gas4you

from United Kingdom

Joined: 23 Feb 2007
Posts: 17604
Location: Norfolk,
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PostPosted: Sun Jan 11, 2009 11:17 am Reply with quote

These are designed so that nearly all the water bypasses the cartridge and only a very small amount goes through the phosphate cartridge, just enough to mix with the hard water to help stop scale from forming.
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oilman

from United Kingdom

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PostPosted: Sun Jan 11, 2009 11:20 am Reply with quote

I would change it to a Cistermiser Combimate. They have big holes which dont get blocked.
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Softus

from United Kingdom

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PostPosted: Sun Jan 11, 2009 6:59 pm Reply with quote

mikebh50 wrote:
i don't seem to get any water out of the small bleed screw on top of the cartridge

Did you unblock the vent?
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OilLecky

from United Kingdom

Joined: 16 Sep 2008
Posts: 197
Location: Gloucestershire,
United Kingdom
Thanked: 7 times

PostPosted: Mon Jan 12, 2009 5:04 pm Reply with quote

I concur with the above comments on blockage. I had one where the cartridge would not come out as it was jammed, the neck broke off in the end. I removed the whole fitting to clean out the lump of cartridge top and found that it was almost full of whatever is in the cartridge. I changed it all as it was easier that drilling / cleaning. It is easy to see how, if the old cartridge had come out properly and I'd fitted a new one, then a little extra deposit would have blocked the 15mm fitting completely and no water flow just like the OP got!
They must have stayed up all night to design these things! (I wonder if they tested them for say...10years, with an annual cartridge change?)
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