Discuss WC runs after flushing — identification of flush mechanism and repair in the Plumbing Jobs | The Job-board area at PlumbersForums.net
My WC has just developed a problem.
It flushes OK but then the water keeps draining into the pan.
The cistern is a concealed/built-in one.
I lifted the cistern lid expecting to find a siphon but the arrangement is quite different.
I would find it really helpful if someone could identify:
1) the arrangement and manufacturer,
2) explain what the cause of the problem is, and finally
3) what I can do to remedy the situation.
Please see the attached images.
Thanking you in anticipation for your guidance and help.
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Thinking grohe or geberit flush? You can pop the flush out and take it to a merchants. It could be scaled it could have a worn washer
Esteemed
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That is grohe dal, you will most likely need a new discharge piston 43544 000. Easy to change, it is at the base of the flush valve.
Esteemed
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Grohe adagio ( probably wrong spelling )
Either , the inlet valve is letting the cistern over fill and its directed into the pan
Or as Ben above sugests if could be the drop valve letting buy .
One or the other , just refill and see where the water level is .... great cisterns!!
Thank you both for your advice. Armed with your information I've found a guide on YouTube about replacing the 'plunger'. Couldn't have done this without your advice. Once again thank you.
Thank you Townfanjon. The cistern is not overfilling. So it points to the drop valve or in newbie speak the plunger. Also for being more specific about the model — Grohe adagio
I've tried 'popping the flush out' but can't do it. It seems to be firming held in place by a 'overhead gantry'. This seems very firmly fixed in place. I don't want to force anything in case I break something and end up in a real mess. Any advice?
Esteemed
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Have to take your brave pills I'm afraid! The gantry lifts off upwards, as you've discovered it can be quite stiff after several years and a bit of limescale.
If you can 'flex' the cistern a little to break free any scale, that can help. I have tapped upwards from below with a length of 2x1 batten in the past - keep it flat to the cradle to avoid uneven pressure which is more likely to break off a lug.
Don't worry too much - it is stronger than it looks (it is also available as a spare part if the worst should happen - I have never broken one yet though)
Thanks Ben-gee. The fact that it can be removed is reassuring and that if things go wrong that a replacement part is available..
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