I have a Shur-Dri SD-520C-T7 tank mounted jet system to run the water from my tank to the house. The tank is a 1500 gallon tank and everything was working great. The other night it got down to 16 degrees and some of the pipes from the pump to the house froze up. When I went out to see why I was not getting water, the pump was running and built up pressure to about 80 psi and it normally runs at about 30 psi. I had to release some of the pressure with the release valve on the back of the bladder. Then I unplugged the motor so that it would not run up again. I turned on the heat in the building and put some heat tape on the exposed pipes, and tried to turn on the pump the next day. I left it runnig for about 15 minutes and when I came back the pipe that comes from the tank to the pump was exploded off. It had stripped the fitting that connects to the pump for water intake. I replaced all of the broken pipes and turned it on again but now the pump will not pull the water from the tank to the pump. I opened up the screw and poured water in to prime the pump but it is not sucking. It just runs and runs but it will not suck the water. This is my first experience with this, what should I do?