Thanks Roger. The only thing I missed from the instructions for the 820mm was fitting the siphon cam bracket. Watching you, the penny dropped and I was able to complete the install. What you call the debris plate was actually a cover plate that must be an optional extra on the 820 because I did not have that. Always a pleasure watching you Roger!

Excellent, informative video. The water in our system just kept running down the toilet and wouldn’t stop. We never would have attempted a self repair without this video clip. Huge thanks!

Plumber who installed it has just come back to me with manufacture name..Abacus but it has the oblong press buttons but im assuming the face plate comes off in a similar manner .