No pressure tanks full?

Question

i live on a farm and we came back last night and there was no water in the house or farm and the expanison tanks are full i dont know what to do

please help

Answer 1

I assume that the "expansion tanks" to which you refer are tanks which provide pressure to your water system. They do this by having air in them which is compressed by the incoming water [from the pump/well]. If there is no  air in the tanks, no pressure can build up [you cannot compress water]. Shut off the water [either with a valve or by turning off power to the pump] , and drain the tank. Then close the drain and turn the water back on. As the pump fills the tank with water, the air that originally completely filled the tank will be compressed by the incoming water, and the tank will be filled partly with water and partly with compressed air. Then, when you turn on a faucet, the compressed air will push water through the system and out your faucet. This process must be done periodically because the compressed air gradually gets absorbed by the water, and the tank has less and less of the air it needs. Newer tanks have a rubber diaphragm which separates the air from the water, thus preventing the air from being absorbed. Getting a newer tank with a diaphragm will eliminate the need for this periodic 'bleeding' process described above.

Answer 2

Do you have a cirrculating pump that may have shut down? is there a break in the line somewhere.