I've heard about salt tanks developing a bridge at the bottom but this is the first time it happened to us, and it created a lot of problems. My question is, what causes this phenomenon?
We're using pellet salt, but I don't know what the previous owner was using and I'm sure the bridge happened on his watch. I've always used pellets and never had a problem like this.
One thing I do know is that when it bridges, it is a very strong dome that is hard to break. We tried to break through it with rebard and a hammer but that just poked small holes in it. We finally got some 1" pipe and collapsed the dome by hitting the pipe with a baby sledge. Even then, it was very hard to get the pipe to break through the bridge.
I've had softners both at home and the wash for years. Using the pellet type (Windsor 2), I've never had the bridge happen. I have had other softener problems and I now buy HACH strips from KR and test on a regular basis.
Set the softener to the brine cycle and pour warm water around the salt against the insides of the tank. It will fall down into the water and dissolve on its own from there.
Red , You may have a leaky float valve in your brine tank. One time the water level is accurate, the next time it leaks over fills and hardens the salt creating the bridge. This is a good time to replace the float valve. It is not expensive,just hard to find. Look in the yellow pages, then on line.Good luck,Pete
Depending on the softener, the float valve may not even control the brine level in the tank. Fleck, for example, have a brine control in the head and only use the float valve to keep the tank from overflowing. Our softener doesn't even have a float in the tank, and I've seen a lot that don't.