Removed soap from broken siren, on the day (6)
I believe the answer is:
rinsed
'removed soap' is the definition.
(I've seen this in another clue)
'broken siren on the day' is the wordplay.
'broken' indicates anagramming the letters.
'on' is a charade indicator (letters next to each other).
'the day' becomes 'd' (abbreviation for day).
'siren' with letters rearranged gives 'rinse'.
'rinse'+'d'='RINSED'
'from' acts as a link.
(Other definitions for rinsed that I've seen before include "Swilled" , "Washed out with fresh water" , "Got rid of soap" , "Washed out with clean water" .)