Franklin Electric 5870202003, Руководство пользователя, Страница: 14 / 132

INSTALLATION PLANNING
Shallow Well Surface Jet Pump Application
14
Shallow Well Surface Jet Pump Application
The above drawing illustrates how a typical surface mounted jet pump system should be arranged for a con -
stant pressure application.
1.
Well
2. Check Valve
3.
Ball Valve
4. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow up to 100 PSI.
5.
Pressure Tank:
Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15 .
6. Pressure Gauge
7.
Pressure Sensor or Transducer:
Install in a vertical position after the pressure tank, and within 6 feet
(1.8 meters) of the tank to minimize pressure fluctuations. There should be no elbows between the tank
and sensor.
8. SubDrive Utility VFD
9.
Power Supply from Circuit Breaker:
Single phase, 115/230 VAC +/- 10%.
10. Power to Motor: Single-Phase.
IMPORTANT:
If the pump is equipped with a built-in pressure switch, the power wires from the VFD must
bypass the pressure switch and connect directly to the motor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief valve able
to pass full pump flow up to 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.