Dudley Turbo 88 Adjustable Duoflush Syphon

[Mike Hardy]

The above unit has just been fitted by a plumber. However the flush time is 12 seconds and is less powerful than my previous syphon and does not appear to clear all solids from the bowl.

Is there a restrictor in this syphon unit that needs to be removed to improve the performance or is this how it is meant to work?

Also from the instructions it suggests there is a "Reduced flush" option but this does not appear to be working - you either get a slight trickle of water by gently touching the handle, or if you lower it too much, you just get the full flush lasting 12 seconds. Am I missing something?

 

[ShaunCorbs]

Does it empty the cistern minus a little bit left in the bottom ?

 

[rpm]

Flush time 12 seconds? Please explain what you mean.

 

[Mike Hardy]

Cistern has a small amount of water left in the bottom after full flush about 1" deep. Flush time 12 seconds is the time for all the water taken to drop into the bowl on the full flush.

 

[rpm]

Close coupled toilet & cistern?
If you disconnect the flush lever from the syphon and pull out the Yellow pin the Blue section (the syphon) can be removed leaving the White tube where the water flows through. Pour water down and see what happens as thinking somehow there is a restriction there (?).

 

[Harvest Fields]

What toilet do you have?

 

[Mike Hardy]

Thanks, toilet is Shires.

 

[Mike Hardy]

It is close-coupled toilet cistern

 

[Harvest Fields]

Thanks, toilet is Shires.

Any chance of a pic from the front and side?

 

[rpm]

Any chance of a pic from the front and side?

Ah, think I know where you are coming from. Maybe missing a bomb?

 

[Mike Hardy]

Okay thanks. Sorting out some pictures.

 

[Mike Hardy]

Pics of loo (how do you upload pics on this forum)

 

[Mike Hardy]

photos herewith.

 

[rpm]

Mike, one more photo please showing the pan side on.
There is a reason we ask this, trust me.

 

[Mike Hardy]

Having problem uploading further photos is there a limit?

 

[Mike Hardy]

Okay, further photos..

 

[danebury]

Okay, further photos..

View attachment 33388

View attachment 33389

syphon tail to long

 

[Mike Hardy]

OK what needs to be done?

 

[rpm]

OK what needs to be done?

I would start with post #5, it is quick and simple to do and will show up a problem.

 

[Mike Hardy]

we know there is a problem - it takes 12 seconds to empty the cistern. Post 17 hints there is a restriction in the bowl -syphon tail too long. Would shortening this tail solve the problem?