Article: When replacing well pumps, you need a good seal to prevent water leaks. Screw the pipe from the well, or inlet pipe, to the inlet pipe on the jet pump with a plumber's wrench. Screw the pipe that brings water to the house, or outlet pipe, to the outlet pipe on the jet pump with a plumber's wrench. Tighten the wires to the electrical terminal with a screwdriver. Check that the pump motor is wired for the same voltage as what is being supplied from the circuit breaker. If the voltage is not the same, rewire the pump motor to the appropriate voltage configuration per the manufacturer included instructions. Jet pumps need to be primed before use. Do this by filling the pump with water through the outlet pipe coming out of the top of the pump or an available access hole that may be located on the pump. Pour in water until the pump is full. Proceed to the next step. If pump loses prime, doesn't pump at a sufficient rate, or doesn't pump water after being primed and run, it may indicate other problems with the water system (i.e. bad check valve) or the well itself ( i.e. hole in drop pipe, plugged point/jet). A problem of this nature may have been the causation of the old pump failure and may not make itself readily apparent until this point.
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Use a plumber's wrench to take off the inlet and outlet ports on the old well pump. Unscrew the wires going to the pressure switch on the old jet pump with a screwdriver. Remove the old pump. Apply Teflon piping tape on the threads of the outlet and inlet pipes, wrapping tape around each pipe at least 5 times to get a proper seal. Install the new pump, following manufacturer's instructions. Connect the wires to the appropriate terminals on the pressure switch of the new pump. Prime the pump. Turn the circuit breaker back on and test your new pump.