Franklin Electric MonoDrive, Owner'S Manual

Page: 15 / 184

INSTALLATION AND SETUP
Installation Process
15
Typical Surface Pressure Boosting Application
The above drawing illustrates how a typical surface mounted pump system should be arranged for
a pressure boosting application.
1.
Water Supply
2.
Check Valve
3.
Ball Valve
4.
Pressure Relief Valve:
Pressure relief valve must be able to pass full pump flow at 100 PSI.
5. Pressure Tank . Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 16 .
6. Pressure Gauge
7. Pressure Transducer or Sensor. Locate within 5 feet (1.5 m) of pump discharge. Install in a ver-
tical position.
8. SubDrive Connect VFD
9. Power Supply from Circuit Breaker . Single phase, 208/230 VAC +/- 10%.
10. Power to Motor . Three-Phase.
11. Optional Bypass. For system maintenance.
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 at 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full sys-
tem flow.