11.17 Flashcards
water and waste
what are two types of faucet
mechanical and infared
how does infared faucet work
controlled by refletive sensor with two lenses
how is water measured in tanks
with a water quantity transmitter which uses capacitance probe
how is the amount of water to go in a tank determined
using a water quantity pre selector
what does the anti-siphon valve do
check valve which prevents back flow of water from toilet into portable water system
how long does the motor operated flush valve operate for
4 seconds
what does flush control unit do
open solenoid operated rinse water valve for second
what transports water waste from toilet to tank
flushing components
what air is used for pressurisation
bleed air from pnuematic system
when is electrical air compressor used for pressurisation
when bleed air is unavailable
where are air filters and what is its purpose
both supply lines and to prevent dirt from entering portable water system
when does pressure switch close
pressure in pneumatic manifold is less then 30psi
when does pressure switch open
pressure in pneumatic manifold increases to over 40spi , this tops the compressor
when does pressure relief valve open
when pressure is increased to over 60spi
where is pressure relief valve located
between pressure switch and water storage tanks
