Micro Pulse Systems Monitor Calbration

[Ponyfvr]

I have a 2014 FC 23D and would like to calibrate the systems monitor. The manual says to get a reading when empty then get a ready when the tanks are full No problem with the fresh water tank and getting the empty reading on the black and gray tanks. How do I fill the back and gray tanks to get the full reading?

I am a newbie and this forum has been very helpful

Thanks for your help

[Ahab]

Very simple, stick your lawn hose in the toilet and let it rip. You have to be a little more careful with the gray, have your mate watch the shower drain while you run the hose in the kitchen sink.