High Level Cistern

[les luchini]

Good morning all.

Having trouble with a high level cistern. Water entry in toilet pan in dribs and drabs, cant get a good flush, replaced syphon, system full of water 9 litres, but still doesnt flush properly. Any ideas guys?

 

[kirkgas]

remove flush pipe and connector at pan and poke about inside to see if anything is blocking any of the 3 holes inside,

 

[les luchini]

Thanks Kirkgas,
had trouble with the joint leaking on the flush pipe and used silicone sealer it's possible some might have come dislodged. hoping i wouldn't have to remove the flush pipe as it was a swine to try and seal at the pan.

 

[kirkgas]

disconnect the flush pipe at the top end and pour some water down this should also tell whether the openings in the back of the pan are blocked, silicone isnt really the answer to seal this kind of joint, best to use a new flush pipe connector, if the silicone gives you will have a steady drip which can go un-noticed and can damage the floor covering

 

[les luchini]

Thanks for replying Kirkgas,

The leak in mention was from the middle of the flush pipe where the top and bottom join, this is where i used loads of silicone. Cant remove pipe from cistern at the top becuse in enters cistern by about 1" (should it?), i would have to remove the bottom first in order to get the top part out, where the flush pipe enters the pan does it normally go into the pan the length of the connector only or could this be part of the problem. Grateful for any more advice. Cheers

 

[kirkgas]

Thanks for replying Kirkgas,

The leak in mention was from the middle of the flush pipe where the top and bottom join, this is where i used loads of silicone. Cant remove pipe from cistern at the top becuse in enters cistern by about 1" (should it?), i would have to remove the bottom first in order to get the top part out, where the flush pipe enters the pan does it normally go into the pan the length of the connector only or could this be part of the problem. Grateful for any more advice. Cheers

if its leaking from the middle joint the water must be under extra pressure, (or you only have a tiny overlap) so i def think it is blocked at the bottom, i usually fit the flush pipe to the end of the connector then push the connector into the pan, occasionally the connector going into the pan leaks if the shape of the spigot is not exactly round and it needs to be sealed with some plumbers mait etc, think you need to remove it at the pan to check it out, if the silicone is set you wont disturb the middle joint if you remove the connector end carefully

 

[WHPES]

Check that the downpipe isn't shoved too far in the flushpipe to pan connector as it will be touching the porcelain on the other side and restricting the water flow. Basically there's two types of flushpipe to pan connector for the flushpipe - the bung type (which shoves in the hole) or the cup type (which goes over the inlet spigot (if present on your design of pan). Cut the flushpipe off just past the connector and this will ensure there is no restriction.

What material is your flushpipe made from. If it's plastic, you can sometimes solvent weld them at the central join.

 

[les luchini]

Thanks for your comments Kirkgas / WHPES,
The problem started when i replaced the brass flushpipe with a chrome one. I think it.s possible the flushpipe has been pushed to far into the pan, the seal is a bung type.