7 WC maintenance If water runs into your WC bowl for longer than five minutes after flushing please refer to the cistern maintenance procedure or read the following for further details: • The float height on the inlet valve may have moved or been set too high thus causing water to internally overflow into the pan (contact the installer). • There could be a build up of limescale or debris on the diaphragm washer (at the base of the outlet valve/drop valv e/flush valve). See cistern maintenance for step by step instructions on how to change the diaphragm wa sher. As a temporary measure the original washer can be cleaned, reversed and refitted whilst waiting for a replacement washer. • The pan and cistern could have been installed on an un-level surface causing the flush valve mechanism to foul against the side of the valve body. If this is the case the pan and cistern should be refitted according to the installation instructions. • The installer may have used sealant or mastic which has chemically attacked the component part(s). • Cleaning products such as bleach blocks may have been used which have chemically attacked the component part(s). • The valves may be fouling against the internal walls of the cistern, or against one another. WC maintenance - Type 1 fittings • The installation site could have low water pressure which prevents the inlet valve from closing off. The cistern therefore continually fills and overflows into the internal overflow. • The black cross headed screw which holds the push button in place (see cistern maintenance) may have been over-tightened thus distorting the valve mechanism and preventing it from sealing • The black securing nut which is located under the cistern base, may not have been tightened sufficiently. • The push button rods may not be set to the correct height, check that the circular and crescent moon push buttons are aligned with the chrome shroud. For Customer Service and Aftersales assistance, please contact our Head Office on 01530 830080