6
Operation
Priming the DuroJet Convertible Shallow Well Jet Pumps
To prevent damage to the pump, do not start motor until pump has been filled with water.
1. Remove prime plug.
2. Fill pump and piping completely full of cold water.
3. Replace the prime plug.
4. Open a faucet to vent the system.
5. Start the motor. Water will be pumped within a few minutes. If the pump fails to prime within 5 minutes, stop the motor
and refill the pump with cold water. The priming time is proportional to the amount of air in the inlet pipe. Refill as often
as necessary.
6. Let the system operate for several minutes to flush all pipes.
7. Close the faucet and allow the pump to build pressure in the tank. When the pressure reaches the cut-out setting, the
motor will stop.
The system is now in operation and will automatically cycle on demand.
Disconnect power and release all pressure from the system before attempting to install, service, relocate or perform
any maintenance. Lock the power disconnect in the open position. Tag the power disconnect to prevent unexpected
application of power.
CAuTioN! Protect pump from freezing during winter conditions.
Draining the DuroJet Convertible Shallow Well Jet Pump
Drain openings are provided on all models. To drain the pump:
1. Remove the drain fitting and the prime plug to vent the system.
2. Drain all piping to a point below the freeze line.
Priming and Setting the DuroJet Convertible Deep Well Jet Pumps
When using DuroJet pumps on deep well applications, longer tube for ejector assembly is required. WaterGroup’s part
number for the long tube is (#302922).
1. Remove prime plug from the pump discharge.
2. Fill pump and piping completely full of cold water.
3. Replace the prime plug
4. Make sure that the long tube is replaced with short tube in the ejector assembly.
5. Start the pump. When the pump is properly primed, a high pressure will show immediately on the gauge.
6. If no pressure is shown, stop the pump and repeat Steps 1 - 3. Several attempts may be required before the pump is
primed.
7. The pressure obtained in Step 6 will be the minimum operating pressure of the pump.
8. When the correct pressure is set, close the faucets. Pressure will rise to close the pressure switch and the pump will stop
automatically.
9. With the pump primed and set, check operation by opening and closing faucets as necessary, allowing the pump to cycle
automatically.
NoTe:
Systems with long offset lines or driven well points may take several attempts to prime. If your pump does not prime
within one or two minutes, repeat Steps 1 to 3. When the pump is primed and running, check operation by opening and
closing faucets as necessary, allowing the pump to cycle automatically.
Disconnect power and release all pressure from the system before attempting to install, service, relocate or perform
any maintenance. Lock the power disconnect in the open position. Tag the power disconnect to prevent unexpected
application of power.
CAuTioN! Protect pump from freezing during winter conditions.
