Ok, heres my Waste Management Control Panel ( WMCP)
I'm going to make a laminated instruction sheet to go with it plus I'm going to attach a cable to the Main battery switch Key so it doesn't get lost. Gauge on left grey water gauge on right black water . So in my mind this is how it's supposed to work.
1. Turn on main power switch.
2. Switch 1 opens black tank valve.
3. Switch 2 turns on black tank pump.When black almost empty go to step 4.
4. Switch 3 CLOSES valve on black tank vent.
5. Switch 4 pumps grey tank into black. 3&4 must be activated together.
When flow stops go to step 6.
6.Switch 2 off, switch 4 off.
7.Switch 5 on, opens valve for fresh water to backflush black tank valve, run for 10 seconds.
8.Close switch 1.
9.switch 2 on, flush fresh water until clean runs out discharge hose, when clean close hand valve at end of hose pressurizing hose.
10.all switches EXCEPT main Battery to off.
11.Press button on hose reel roll up hose.
12.open valve to release pressure in hose.
13.Main Battery switch off. close panels
I know it seems like a lot