So I tried to be a good boy (far right),
and read my B717 VOL 2 cover to cover. I got stuck a few pages in when I realized how much time, 3 pages, was being dedicated to how the toilet works.
As you read: "A toilet assembly is in each lavatory. The toilet assembly is installed behind a removable shroud. It is a self-contained line replaceable unit with electrical and plumbing connections. The toilet includes the following:
• A toilet bowl
• A Flush Control Unit (FCU)
• A flush valve
• A rinse water valve"
And it goes on and on about the flush control unit. Then you get to the Logic Control Module. Yes, it has one and it gets its own header on the page. But it uses 28 VDC power to operate 2 channels. I know right. Duh.
Then there is the 3-phase 115 VAC blower control relay and it bullet points the 3 reasons that system energizes which includes being below 16,000', service panel door is closed and wait for it, the thermostats in the vaccum blower do not sense a blower motor over temp.
And this is all before we get to the ultrasonic level sensors.
