Dudley Tri-Well Turbo Installation Instructions

The Dudley Tri-Well cistern is designed to be supported by wall brackets. Please note these brackets are not supplied with
the cistern kit. Do not drill the cistern body for screw fixing. The water supply to the cistern must be on the same side as the
pull chain lever but can be left or right hand fitting with respect to the front of the cistern. Overflow warning can be internal
(overflowing into the pan) or via an external pipe connection.
The Dudley S1-11 Turbo 2-part syphon is factory set to deliver 9 litres to the WC pan but can be adjusted to deliver 6 or
7 litres.
WARNING
No sealing compound, paste, flux or solvent to be used in contact with plastic or rubber
surfaces, to avoid damage to plastic components. Rubber washers should provide adequate
seal. PTFE tape may be used on threads. Do not overtighten plastic nuts.
Fitting the syphon to the cistern.
Determine the required flush quantity (6, 7 or 9 litres) which is needed
to be delivered to the WC pan.
Adjust the syphon as follows: see
For 6 litres - Remove the upper white plug only in the syphon body.
For 7 litres - Remove the lower white plug only in the syphon body.
Fit the syphon with the rubber washer inside the cistern and secure
with backnut. Make sure the operating link is nearest the cistern end
where the pull chain lever is to be fitted. See
Fitting the inlet valve.
The side inlet valve is factory fitted with a 3mm bore high pressure
(white) seat. If the supply water is tank fed this seat must be replaced
with the red seat attached to the arm of the valve. To change the seat,
rotate the front nut anticlockwise until it disengages with the valve
body. Remove the Plunger and diaphragm. Remove the diaphragm
support cage. The seat can now be easily removed from the assembly.
Make sure the 'O' ring, under the seat, is in its groove before fitting
the new seat. Assemble other components in reverse order. The front
nut should be hand tight. Do not over tighten. See
Fit the Inlet valve to the cistern.
Remove one of the spigoted nuts from the valve body and make sure
the remaining nut is orientated so the spigot on the nut is facing towards
the cistern wall. Offer the valve to the cistern and pass the thread
through the wall and locate the nut spigot into the hole to centralise
valve. Replace the other nut onto the thread with the spigot facing the
cistern wall. Before tightening, make sure there is sufficient thread
protruding beyond the outer nut so the supply pipe can be fitted.
Tighten outer nut making sure the valve arm is moving freely in a
vertical direction. Attach the ball float to the end of the arm and position
it using the joint so that it is free to move vertically and does not touch
the walls of the cistern or the syphon. See
Internal / External warning.
If Internal warning is required fit the blanking plug provided into the
side hole opposite to the inlet valve fitting as per diagram.
If external warning is required, fit the side overflow fitting supplied into
the side hole opposite to the inlet valve fitting, ready for external pipe
to be fitted. See
Fit lever to cistern.
Take fulcrum bracket and fit to cistern via dovetail slot in side of cistern
body. Secure by means of the screw and nut provided. See
Hook the 'C' clip, on the syphon, through the hole in the lever and fit
pegs on lever into holes in fulcrum bracket. Operate lever to make sure
of smooth action.
Installing cistern assembly.
With the cistern support brackets fixed at the required height, place the
cistern on the brackets and connect pipework for water inlet and
external warning (if required). Connect the flush pipe to the cistern
using the cone ring and capnut supplied. No more than 50mm to be
inserted into tail of syphon. See
If splashing occurs from the pan rim, fit the pan restrictor washer
(supplied) into the pan inlet before connecting the flush pipe to the pan.
DUDLEY
TM
Cistern Installation Instructions.
Rubber
washer
Spigoted nut(inner)
Float
ext.
overflow
fitting
External warning
Upper white plug
Lower white plug
Pull chain
fitted this side
Backnut
Inlet valve
Spigoted nut(outer)
Blanking
plug
Internal warning