For starters it is a Fleck 9000 valve..
Here is the link for the manual...
download the manaul.
If the meter cable is not in the meter cap or in the timer assembly that will keep the unit from cycling when the gallons are used up and changing tank that is is service.
Plug the unit in... meter will count the water used, but the unit will not be able to clean when it needs to. It will clean when your house has used 800 gallons.. number of people X 60gallons per person = gallons per day. Unit will clean when that 800 is used, no matter the time of day or night.