I have just managed to get the bore well (455 feet) done and got water after 390 feet, 420 feet (hardly 1 inches water). I installed 2 HP 25 stage submersible pump (CRI) at 430 feet.
It is working normally for few hours (about 1 hour or so) and after that some dusty water is coming and it is stopping. Starting after few minutes again its working for few minutes and then stopping after coming dusty water.
We tried pulling up and down the motor but still the same problem.
Any idea what can be the reason for this?