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6
How It Works
The Franklin Electric SubDrive300 is designed to be part of a system that
consists of only four components:
A. Standard Pump and Franklin Electric Motor.
B. SubDrive Controller.
C. Small Pressure Tank (for tank size, see Table 3).
D. Franklin Electric Pressure Sensor (provided).
E. Franklin Electric Pressure Shut-Off Sensor (provided).
Pressure
Sensor
Leads
Pressure
Shut-o
Sensor
Leads
Power Supply
From Circuit Breaker
PUMP
MOTOR
DE
B
C
Pressure
Relief Valve
Constant Pressure
The Franklin Electric SubDrive300 provides consistent pressure regulation
using advanced electronics to drive a standard motor and pump according
to the pressure demands indicated by a highly accurate, heavy-duty,
long-life pressure sensor. By adjusting the motor/pump speed, the
SubDrive300 can deliver constant pressure dependably, even as water
demand changes. For example, a small demand on the system, such as
a bathroom faucet, results in the motor/pump running at a relatively low
speed. As greater demands are placed on the system, such as opening
additional faucets or using appliances, the speed increases accordingly to
maintain the desired system pressure.