What causes the “T” pack to pop off of the casing and what can be done?
A. While adding additional lengths of casing, the water level in the pipe will drop to the static level, thus introducing air to the pipe. When the “T” pack is put back on the pipe and the water flow is started, the air in the pipe is compressed and pressure builds eventually pushing the “T” pack off. To fix this, fill the pipe with water before re-installing the “T” pack. Also, it may be necessary to lift the casing up to restart the circulation of water to the surface.
