As stated back in June 2015, the design principle is simple and works something like this:
- A constantly running tap fills an aluminium tray (or tank) with approximately 10 to 15 Litres of water (depending on the size of the urinal - this could be two tanks).
- Through the slight tilt of the tray, as the tray fills with water, it becomes "off-balance" and decants the water onto the face of the urinals, therefore washing the urinal and taking aways the smells.
- This process is repeated every 3 to 5 minutes, 24 hours each and every day...independent of use!!!
Whilst the schools caretakers are making every effort to minimise the rate the tray/tanks refill, by adjusting the flow of water, this is not the long term solution.
The recommendation is change...we need to gradually eradicate all schools of this system as a matter of priority. Solutions will be tested during the following month, as this change has a cost implication, which schools are hard pressed to finance. We shall further report on the measures taken at the various schools we are working with.