Iíve got the demo last Thursday night.
It was quick cause itís simple.
What was new or not understood from the tutorials I saw and read is:
Be sure to put some anti-freeze between the water intake and the rest of the circuit as the pump doesnít drain water from that part. Do that first cause you donít want to put back water in the hoses after filling it with anti-freeze.
If you have a cassette toilet.
a. Empty the fresh liquid using the pump. (Upper part)
b. Empty and clean the dark water reservoir.
c. Put some anti-freeze liquid in the fresh liquid reservoir, around 1 liter.
d. Activate the pump to see the pink Anti-freeze flowing in the toilet.
e. Personnaly, Iíll manage to have Ĺ liter in the upper and Ĺ in the lower reservoir so if the was still some water in it, no damage will be done.